CN113203433A

CN113203433A - Coal mine underground water inrush early warning monitoring device and method

Info

Publication number: CN113203433A
Application number: CN202110351971.0A
Authority: CN
Inventors: 单耀; 连会青; 王艺岚; 彭瑞; 李健
Original assignee: North China Institute of Science and Technology
Current assignee: North China Institute of Science and Technology
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-08-03
Anticipated expiration: 2041-03-31
Also published as: CN113203433B

Abstract

A coal mine underground water inrush early warning monitoring device and a method thereof are disclosed, wherein the device comprises a flow guide cover, a first filter plate, an installation cylinder, a second filter plate, an installation platform assembly, a rotating column, a first helical blade, a water quality sensor, a central controller, an audible and visual alarm, an installation cover and a fixing frame; the kuppe is hemisphere cover column structure, and covers the bellied orientation of form and rivers opposite direction, is provided with the guiding gutter on the kuppe outer peripheral face, and the guiding gutter tank bottom is provided with a plurality of inlet openings, and kuppe, first filter plate, installation section of thick bamboo and second filter plate are coaxial setting in proper order along the rivers direction, and the kuppe rotates with first filter plate to be connected, and guiding gutter terminal end aligns with first filter plate outer peripheral face, and first filter plate, installation section of thick bamboo and second filter plate connect gradually. The invention can carry out safety protection on the water quality sensor on the premise of ensuring the normal monitoring of the water quality sensor, can avoid the occurrence of blockage, and is beneficial to stably monitoring the water quality for a long time, thereby being capable of carrying out early warning and monitoring on water inrush in a coal mine for a long time.

Description

Coal mine underground water inrush early warning monitoring device and method

Technical Field

The invention relates to the technical field of coal mine water inrush early warning, in particular to a coal mine underground water inrush early warning monitoring device and method.

Background

The water inrush of the mine is a phenomenon that a large amount of underground water suddenly flows into a mine roadway when the roadway is uncovered through a water guide fracture, a water-rich karst cave and a water accumulation gallery in the tunneling or mining process. When an indirect water-filling layer is arranged under the roadway bottom plate, the bottom plate water-resisting layer is damaged under the action of underground water pressure and mine pressure, an artificial fracture channel is formed, and high-pressure underground water at the lower part is caused to rush into the roadway to cause water inrush. Mine water inrush is generally violent and often submerges a tunnel in a short time, so that harm is brought to mine production, and casualties are caused. In a mining area filled with water-rich karst water and a mining mountain area with a thicker high-pressure aquifer distribution on a top bottom plate, water inrush from a mine is often caused in a section with broken structure.

The damage of flood to the mine is destructive, and once the flood occurs, not only can serious casualties of mine personnel be caused and losses which are difficult to estimate be caused due to the difficult predication of the flood, but also the consequences which are difficult to repair are caused to the mine, and the economic losses are self evident. The more obvious problem is that the rescue difficulty of mine disasters caused by flood disasters is high, and once the flood disasters occur, people are difficult to recover life and economic loss within limited time basically. Therefore, water damage is one of the very important problems affecting mine safety.

The existing coal mine water inrush monitoring method usually adopts single monitoring indexes such as water quality, water quantity, temperature, humidity, gas components, cracks and the like to monitor the mine water inrush, and the monitoring result is poor in accuracy. To current monitoring devices who carries out colliery water inrush early warning monitoring in pit through monitoring quality of water, because debris such as rubble are doped in the rivers, strike quality of water sensor easily, cause quality of water sensor's damage, be unfavorable for carrying on long-term stable quality of water monitoring, to simply setting up the mode that the filter screen sheltered from, the filter screen blocks up easily, makes monitoring devices lose monitoring function. The existing coal mine water inrush monitoring method can only monitor whether water inrush occurs or carry out prejudgment before water inrush, but neglects water level monitoring in a water sump of a mine where water inrush occurs, so that equipment in the water sump cannot be timely, safely and effectively rescued.

Disclosure of Invention

Objects of the invention

In order to solve the technical problems in the background art, the invention provides a coal mine underground water inrush early warning monitoring device and method, which can perform safety protection on a water quality sensor on the premise of ensuring normal monitoring of the water quality sensor, can avoid blockage, are beneficial to stably monitoring water quality for a long time, and can perform coal mine underground water inrush early warning monitoring for a long time.

(II) technical scheme

In the first aspect of the present invention:

the underground water inrush early warning and monitoring device for the coal mine comprises a water quality monitoring mechanism, a central controller and an audible and visual alarm; the water quality monitoring mechanism comprises a flow guide cover, an installation cylinder, a rotating column, a first helical blade, a water quality sensor and an installation cover; the flow guide cover is provided with a plurality of water inlet holes and is rotatably arranged at the water inlet end of the mounting cylinder; the first helical blade is arranged on the rotating column, the rotating column and the first helical blade are coaxially arranged in the mounting cylinder, and a water flowing channel is arranged between the first helical blade and the inner wall of the mounting cylinder; the mounting cover passes through the mount table subassembly to be fixed on the outer peripheral face of a mounting cylinder, and the mount table subassembly includes first mount table and second mount table, is provided with on the first mount table to be used for driving kuppe and rotates post pivoted actuating mechanism, and inside water quality sensor inserted the mount cylinder through the second mount table, audible-visual annunciator set up at the mount cover top, and water quality sensor and central controller communication are connected, and central controller and actuating mechanism and audible-visual annunciator are control connection respectively.

In a preferred embodiment of the present invention, a filter assembly is disposed in the mounting cylinder, the filter assembly includes a first filter plate and a second filter plate, and the first filter plate and the second filter plate are sequentially and coaxially disposed at two ends of the mounting cylinder along a water flow direction.

In a preferred embodiment of the invention, the air guide sleeve is of a hemispherical structure, the outer peripheral surface of the air guide sleeve is provided with the air guide groove, the air guide groove is arranged in an arc shape, and the plurality of water inlet holes are uniformly formed at the bottom of the air guide groove.

In a preferred embodiment of the present invention, the water inlet is inclined gradually in the water flow direction along the axial direction, and the aperture of the water inlet is gradually increased along the water flow direction.

In a preferred embodiment of the invention, the edge of the water inlet hole is provided with a fillet.

In a preferred embodiment of the present invention, the first filter plate and the second filter plate are both provided with filter holes, and the pore diameters of the filter holes gradually increase along the water flow direction.

In a preferred embodiment of the invention, the driving mechanism comprises a motor, a first rotating shaft, a first bevel gear, a second bevel gear, a third bevel gear, a second rotating shaft, a third rotating shaft, a spherical cover and a fixing rod, the motor is arranged on a first mounting platform, the motor is in driving connection with the first rotating shaft, the first rotating shaft is vertically arranged, the first rotating shaft is rotatably arranged on the first mounting platform, the bottom end of the first rotating shaft is connected with the first bevel gear, the second bevel gear and the third bevel gear are all positioned on the inner side of the spherical cover, the first bevel gear is simultaneously meshed with the second bevel gear and the third bevel gear, the second bevel gear and the third bevel gear are arranged side by side along the axial direction of the mounting cylinder, the second rotating shaft and the third rotating shaft are both coaxially arranged with the mounting cylinder, the second rotating shaft and the third rotating shaft are both rotatably arranged on the spherical cover, the second rotating shaft penetrates through the first filter plate, the two ends of the second rotating shaft are respectively connected with the air guide sleeve and the second bevel gear, the two ends of the third rotating shaft are respectively connected with the third bevel gear and the rotating column, the spherical cover is arranged on the fixing rod, and the fixing rod is arranged on the inner wall of the mounting cylinder.

In a preferred embodiment of the present invention, the inner wall of the mounting cylinder is provided with a second helical blade, and the first helical blade and the second helical blade are provided with a spacing channel along the radial direction of the mounting cylinder.

In a preferred embodiment of the invention, two water quality sensors are arranged side by side along the water flow direction, and the bottom ends of the water quality sensors are arranged close to the front side surface of the second helical blade.

According to a preferred embodiment of the invention, the coal mine underground water inrush early warning monitoring device further comprises a fixing frame, the mounting cover is fixed on the fixing frame, the fixing frame is of a U-shaped structure, the U-shaped opening is arranged downwards, and fixing nails are arranged at the bottoms of the two ends of the fixing frame.

According to a preferred embodiment of the invention, the coal mine underground water inrush early warning and monitoring device further comprises a vibration monitoring mechanism, wherein the vibration monitoring mechanism is fixed on the fixing frame and is in contact with the inner wall of the coal mine roadway and used for monitoring the vibration of the coal mine roadway.

According to a preferred embodiment of the invention, the vibration monitoring mechanism comprises a fixing plate, a vibration sensor, a mounting plate, a fixing platform, a screw rod, a knob and a guide rod, wherein the fixing plate is arranged on the fixing frame, the vibration sensor is arranged on the mounting plate, the vibration sensor is in communication connection with the central controller, the fixing platform is connected with the mounting plate, one end of the screw rod is rotatably connected with the fixing platform, the other end of the screw rod is connected with the knob, the screw rod penetrates through the fixing plate and is in threaded connection with the fixing plate, the guide rod and the screw rod are arranged side by side, the end part of the guide rod is connected with the mounting plate, and the guide rod is arranged on the fixing plate in a sliding manner.

In a preferred embodiment of the invention, one end of the guide rod, which is far away from the mounting plate, is connected with a connecting plate, and the screw penetrates through the connecting plate.

According to a preferred embodiment of the invention, the first mounting table and the second mounting table are both of a columnar structure, the first mounting table is provided with a first central hole, and the first rotating shaft penetrates through the first central hole to be connected with the output shaft of the motor; the second mount table sets up the second centre bore, and quality of water sensor installs in the second centre bore, and quality of water sensor's front end stretches into the inside to the installation section of thick bamboo.

In a preferred embodiment of the present invention, the mounting cover is a sealed box structure, and includes a top wall, a bottom wall, and side walls, and the top wall, the bottom wall, and the side walls are integrally formed or hermetically spliced.

In a preferred embodiment of the invention, the bottom wall of the mounting cover is provided with a first mounting opening and a second mounting opening, the first ends of the first mounting platform and the second mounting platform are fixedly connected with the peripheral surface of the mounting cylinder, the second ends of the first mounting platform and the second mounting platform are both positioned in the inner space of the mounting cover, the first mounting platform is hermetically mounted at the first mounting opening through a sealing ring, and the second mounting platform is hermetically mounted at the second mounting opening through a sealing ring; the outer peripheral surface of the mounting cylinder is provided with a first through hole and a second through hole, the first through hole corresponds to the first center hole and allows the first rotating shaft to pass through, and the first rotating shaft is in sealed rotating connection with the first center hole; the second through hole corresponds to the second center hole, the water quality sensor is arranged in the second through hole and the second center hole, and the front end of the water quality sensor penetrates through the second through hole of the mounting cylinder and extends into the mounting cylinder.

In a preferred embodiment of the present invention, the second center hole of the second mounting table has a diameter larger than the outer diameter of the water quality sensor, and the water quality sensor is mounted in the second center hole through a damper.

In a preferred embodiment of the present invention, the damping member is an elastic filler filled in an annular space between the water quality sensor and the second center hole.

In a preferred embodiment of the invention, the damping piece is a spring, and the water quality sensor is fixed in the second central hole through a plurality of springs; the first end of the spring is fixed on the hole wall of the second center hole, the second end of the spring abuts against the outer peripheral wall of the water quality sensor, or the lower part of the water quality sensor is sleeved with the connecting ring, and the second end of the spring is connected with the connecting ring.

In a preferred embodiment of the invention, the aperture of the second central hole of the second mounting platform is gradually enlarged from top to bottom, and the longitudinal section of the second central hole is trumpet-shaped or splayed; the upper part of the water quality sensor is rotatably connected with the upper part of the second center hole through a spherical hinge, and the lower space of the second center hole forms a swinging space of the water quality sensor.

In a preferred embodiment of the present invention, a damper is provided in the swing space.

According to a preferred embodiment of the invention, the coal mine underground water inrush early warning and monitoring device is further provided with a backflow prevention device, and the backflow prevention device is detachably arranged in the installation cylinder and is positioned at the downstream of the second filter plate.

According to a preferred embodiment of the invention, the backflow prevention device comprises a partition plate, the top end of the partition plate is rotatably connected with the inner wall of the installation cylinder, the shape of the partition plate is matched with that of the inner wall of the installation cylinder, and the partition plate can be opened under the impact of the upstream mine water and closed under the impact of the gravity of the partition plate or the backflow mine water.

In a preferred embodiment of the present invention, the top end of the partition plate is disposed obliquely in the upstream direction; the longitudinal section of the partition board is a symmetrical figure and is provided with a longitudinal symmetrical axis, the effective longitudinal blocking length L of the partition board is greater than the diameter D of the inner wall of the installation cylinder, after the partition board is installed in the installation cylinder, the distance between the top end and the bottom end of the partition board is L in a natural state, and the gravity center of the partition board is located on the longitudinal symmetrical axis of the partition board and is 1/5-1/4L away from the bottom end of the partition board; the longitudinal symmetry axis of the clapboard forms an included angle of 5-8 degrees with the vertical direction.

In a preferred embodiment of the present invention, the inner wall of the mounting cylinder is provided with a limiting portion for limiting the partition plate to swing only in a downstream direction of the limiting portion, and the periphery of the outer edge of the partition plate can be in sealing fit with the limiting portion.

In a preferred embodiment of the present invention, the upstream surface of the partition is a convex curved surface, and the downstream surface of the partition is a concave curved surface.

In a preferred embodiment of the invention, the backflow prevention device is arranged 30-50cm upstream from the water outlet of the mounting cylinder.

Second aspect of the invention:

the coal mine underground water inrush early warning and monitoring method is characterized by comprising the following steps of:

the device is placed in a drainage ditch of a coal mine tunnel, the device is fixed by a fixing frame, and a flow guide cover is arranged forwards; starting a driving mechanism and a water quality sensor, wherein the driving mechanism drives the air guide sleeve and the rotating column to rotate;

water enters the inner side of the flow guide cover through the flow guide groove and the water inlet hole and sequentially passes through the first filter plate, the mounting cylinder and the second filter plate;

the water quality sensor monitors water entering the installation barrel, when the water quality sensor monitors that substances permeating into the drainage ditch due to underground water burst are mixed in the water, the water quality sensor sends signals to the central controller, and the central controller controls the audible and visual alarm to give an audible and visual alarm.

In a third aspect of the invention:

the coal mine underground water inrush early warning and monitoring system comprises the coal mine underground water inrush early warning and monitoring device adopting any technical scheme, and further comprises a combined sensor monitoring device and/or a water sump water level monitoring device for coal mine water inrush disaster early warning.

The invention discloses a preferable embodiment, a combined sensor monitoring device for mine water inrush disaster early warning comprises a rack, a telescopic mechanism, a rotating mechanism and a probe rod, wherein the telescopic mechanism and the rotating mechanism are fixedly arranged on the rack, the telescopic mechanism is connected with the rotating mechanism, the rotating mechanism is connected with the probe rod, the telescopic mechanism is used for driving the rotating mechanism to move along the telescopic direction, and the rotating mechanism is used for driving the probe rod to rotate and fixing the probe rod at a specified rotating angle position; and a combined sensor is arranged on the periphery of the probe rod.

In a preferred embodiment of the present invention, the combination sensor includes at least two of a humidity sensor, a water level sensor, a temperature sensor, and a water quality sensor.

According to a preferred embodiment of the invention, a camera is installed at the front end of the probe rod, and the camera is used for shooting the hole wall of the detection hole and acquiring a crack image and crack parameters of the hole wall of the detection hole.

In a preferred embodiment of the present invention, the telescopic mechanism comprises a first pillar, a top seat, a telescopic electric cylinder, a lifting plate, a base plate, a central shaft, a second pillar, a linear bearing and a guide pillar; the lifting plate is fixedly arranged on the linear bearing, the tail end of a telescopic rod of the telescopic electric cylinder is arranged on the lifting plate through a floating joint, and the base plate is arranged below the lifting plate through a second support column.

In a preferred embodiment of the present invention, the rotating mechanism includes a connecting cylinder, a nut, a rotating cylinder, a servo driver, a rotating arm, a ball guide shaft, a key-free bushing, a coupling, a bearing, a floating joint, and a bearing gland; the top end of the central shaft is installed in a base plate installation hole through a bearing, the bearing gland is fixedly installed on the bottom surface of the base plate through screws and pressed on the bearing, the lower end of the central shaft is connected with the upper end of the ball guide shaft through a coupler, a servo driver is fixedly installed in a center hole in a rack, the top end of the rotary cylinder is installed on the servo driver through screws, nuts are installed on the ball guide shaft and fixedly installed at the bottom of the rotary cylinder, the connecting cylinder is fixedly installed at the lower end of the ball guide shaft through a key-free shaft lining, one end of the rotary arm is fixedly installed on the bottom surface of the connecting cylinder, and the probe rod is fixedly installed in an installation hole at the other end of the rotary arm.

The invention discloses a preferable embodiment, a water sump water level monitoring device comprises an installation frame, a first hinge, a multicolor indicator lamp, a power supply relay conversion box, a magnetic suction hasp, a high-pitch alarm module, a water level detection module, a first-level water level probe, a second-level water level probe, a left half protective door, a right half protective door, an iron sheet, a second hinge, a handle, a first alarm loudspeaker and a second alarm loudspeaker, wherein the multicolor indicator lamp is fixedly arranged on the top surface of the installation frame, the left half protective door is arranged on the front side surface of the installation frame through the first hinge, the right half protective door is arranged on the right side surface of the left half protective door through the second hinge, the iron sheet is arranged on the inner side of the right half protective door, the power supply relay conversion box, the high-pitch alarm module and the water level detection module are fixedly arranged in the installation frame, and the first-level water level probe and the second-level probe are connected with the water level detection module through cables, first warning loudspeaker and second warning loudspeaker are all installed on the right flank of installation frame and first warning loudspeaker and second warning loudspeaker all are connected with high pitch alarm module through the cable, and hasp fixed mounting is inhaled to magnetism in the installation frame, installs air switch on the power relay transfer box.

Compared with the prior art, the technical scheme of the invention has the following beneficial technical effects:

1. the invention can carry out safety protection on the water quality sensor on the premise of ensuring the normal monitoring of the water quality sensor, can avoid the blocking condition of the air guide sleeve, the first filter plate and the second filter plate, is beneficial to stably monitoring the water quality for a long time, and can carry out early warning and monitoring on the water inrush in the coal mine for a long time.

2. The driving mechanism drives the air guide sleeve and the rotating column to rotate, and the rotating column drives the first spiral blade to rotate. When rivers flow to kuppe department, rivers flow along the kuppe outer peripheral face, because the condaler effect, rivers easily flow on the kuppe surface of hemisphere cover column structure, easily flow to the guiding gutter in, flow along the guiding gutter of camber line shape, and pass the kuppe at flow in-process through the inlet opening, the rubble can flow to the outside when striking the kuppe under the rotating condition, be difficult for getting into in guiding gutter and the inlet opening, be difficult for blockking up the inlet opening, even if get into the guiding gutter, also can flow away from the terminal point end of guiding gutter, first filter plate plays further guard action under the prerequisite of guaranteeing that rivers smoothly flow.

3. After rivers get into the installation section of thick bamboo, carry out the water conservancy diversion by second helical blade to rivers, make the different composition in the rivers can distribute evenly, monitor quality of water by water quality sensor, save the required time of monitoring, improve monitoring efficiency to when monitoring that the aquatic is doped with from the groundwater of gushing into, send a signal to central controller, start audible-visual annunciator and report to the police, effectively improved early warning efficiency, be favorable to the staff in time to withdraw, be favorable to the security personnel safety.

4. The mine water inrush disaster monitoring system of the invention utilizes a water quality monitoring mechanism of a coal mine underground water inrush early warning monitoring device to monitor the water quality change of mine water, a vibration monitoring mechanism to monitor the vibration signal of a coal mine tunnel in real time, utilizes a water bin water level monitoring device to monitor the water level in a water bin in real time, judges whether water inrush occurs according to the water level change condition in the water bin, utilizes a combined sensor monitoring device of the mine water inrush disaster early warning to monitor the temperature, cracks, crack seepage and seepage water quality conditions in a tunnel borehole in real time, carries out comprehensive judgment on the mine water inrush disaster through monitoring a plurality of positions of a drainage ditch, the water bin, the bottom wall and the side wall of the tunnel in the mine simultaneously and based on a plurality of parameters of the water quality, the water level, the vibration of a road wall, the cracks and the seepage water in the cracks of the mine, so that the monitoring result is more accurate and more reliable, when the mine water inrush happens, the monitoring system can remind workers in time, and the monitoring system is helpful for judging the direction of the water inrush water source according to the alarm position, so that the early warning effect is good.

Drawings

FIG. 1 is a schematic structural diagram of a coal mine underground water inrush early warning monitoring device in embodiment 1;

FIG. 2 is a partial structural cross-sectional view of the coal mine underground water inrush early warning and monitoring device of embodiment 1;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

FIG. 4 is an enlarged view of the structure at B in FIG. 2;

FIG. 5 is a schematic structural diagram of a dome in the coal mine underground water inrush warning and monitoring device of embodiment 1;

FIG. 6 is a schematic diagram showing a relationship between a partition plate and a second filter plate of the coal mine underground water inrush warning and monitoring device in embodiment 1;

fig. 7 is a front view of the structure of the combined sensor monitoring device for mine water inrush disaster warning of embodiment 2;

fig. 8 is a structural bottom view of the combined sensor monitoring device for mine water inrush disaster warning of embodiment 2;

fig. 9 is a left side view of the structure of the combined sensor monitoring device for mine water inrush disaster warning of embodiment 2;

FIG. 10 is a cross-sectional view A-A of FIG. 9;

FIG. 11 is a front view showing the structure of a water sump water level monitoring apparatus according to embodiment 3;

FIG. 12 is a plan view showing the structure of a sump water level monitoring device according to embodiment 3;

FIG. 13 is a right side view showing the structure of a water sump water level monitoring apparatus according to embodiment 3;

fig. 14 is a circuit diagram of a water level detection module of the water sump water level monitoring device of embodiment 3.

Reference numerals:

1. a pod; 101. a diversion trench; 102. a water inlet hole; 2. a first filter plate; 3. mounting the cylinder; 4. a second filter plate; 5. a first mounting table; 6. a motor; 7. a first rotating shaft; 8. a first bevel gear; 9. a second bevel gear; 10. a second rotating shaft; 11. a third rotating shaft; 12. rotating the column; 13. a first helical blade; 14. a second helical blade; 15. a water quality sensor; 16. a central controller; 17. an audible and visual alarm; 18. mounting a cover; 19. a fixed mount; 20. a fixing plate; 21. a shock sensor; 22. mounting a plate; 23. a fixed table; 24. a screw; 25. a knob; 26. a guide bar; 27. a connecting plate; 28. a spherical cover; 29. fixing the rod; 30. a second mounting table; 31. a third bevel gear; 32. a partition plate; 33. an adjustable leg; 34. a frame; 35. a connecting cylinder; 36. a nut; 37. a rotary drum; 38. a servo driver; 39. a first support; 40. a top seat; 41. a telescopic electric cylinder; 42. a lifting plate; 43. a substrate; 44. a rotating arm; 45. a probe rod; 46. a central shaft; 47. a second support; 48. a linear bearing; 49. a guide post; 50. a ball guide shaft; 51. a key-free bushing; 52. a coupling; 53. a bearing; 54. a floating joint; 55. a bearing gland; 56. supporting legs; 57. a mounting frame; 58. a first hinge; 59. a multi-color indicator light; 60. a power relay conversion box; 61. the hasp is magnetically attracted; 62. a high-pitch alarm module; 63. a water level detection module; 64. a first level probe; 65. a secondary water level probe; 66. a left half guard door; 67. a right half guard gate; 68. iron sheets; 69. a second hinge; 70. a handle; 71. a first alarm horn; 72. and a second alarm horn.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Example 1

The invention discloses a concrete embodiment, as shown in fig. 1-5, discloses a coal mine underground water inrush early warning monitoring device, which comprises a water quality monitoring mechanism, a central controller 16, an audible and visual alarm 17 and a fixed frame 19; the water quality monitoring mechanism comprises a flow guide cover 1, an installation cylinder 3, a rotating column 12, a first helical blade 13, a water quality sensor 15 and an installation cover 18; the air guide sleeve 1 is provided with a plurality of water inlet holes 102 and is rotatably arranged at the water inlet end of the mounting cylinder 3; the first helical blade 13 is arranged on the rotating column 12, the rotating column 12 and the first helical blade 13 are coaxially arranged on the inner side of the mounting cylinder 3, and a water flowing channel is arranged between the first helical blade 13 and the inner wall of the mounting cylinder 3; the mounting table subassembly sets up on the installation cylinder 3 outer peripheral face, the mounting table subassembly is connected with installation cover 18, specifically speaking, installation cover 18 passes through the mounting table subassembly to be fixed on the outer peripheral face of installation cylinder 3, the mounting table subassembly includes a first mounting table 5 and a plurality of second mounting table 30, first mounting table 5 and second mounting table 30 are stainless steel, be provided with on the first mounting table 5 and be used for driving kuppe 1 and the pivoted actuating mechanism of rotation post 12 pivoted, be provided with on the second mounting table 30 and be used for inserting the inside water quality sensor 15 of installation cylinder 3, water quality sensor 15 is connected with central controller 16 communication, central controller 16 sets up inside installation cover 18, central controller 16 and actuating mechanism and audible-visual annunciator 17 are the control connection respectively, audible-visual annunciator 17 sets up at installation cover 18 top, installation cover 18 sets up on mount 19.

In this embodiment, a filter assembly is arranged in the installation cylinder 3, the filter assembly includes a first filter plate 2 and a second filter plate 4, the first filter plate 2 and the second filter plate 4 are sequentially and coaxially arranged at two ends of the installation cylinder 3 along the water flow direction, the air guide sleeve 1, the first filter plate 2, the installation cylinder 3 and the second filter plate 4 are sequentially and coaxially arranged along the water flow direction, the air guide sleeve 1 is rotatably connected with the first filter plate 2, the end point of the air guide groove 101 is aligned with the outer peripheral surface of the first filter plate 2, the installation cylinder 3 and the second filter plate 4 are sequentially connected, and the rotary column 12 is rotatably connected with the second filter plate 4. Set up the filter plate through the both ends at installation cylinder 3, can prevent that the impurity of mine aquatic from getting into in installation cylinder 3, avoid blockking up in the installation cylinder, prevent moreover that rubble granule in the rivers from striking water quality sensor, promote water quality sensor's life, guarantee monitoring devices's operational reliability.

The invention can carry out safety protection on the water quality sensor 15 on the premise of ensuring the normal monitoring of the water quality sensor 15, can avoid the blockage of the air guide sleeve 1, the first filter plate 2 and the second filter plate 4, is beneficial to stably monitoring the water quality for a long time, and can carry out early warning and monitoring on the water inrush in the underground coal mine for a long time. Utilize mount 19 to fix this device beside the escape canal, kuppe 1, first filter plate 2, installation section of thick bamboo 3 and second filter plate 4 all are placed in the coal mine tunnel escape canal, and can not contact with the escape canal inner wall. The driving mechanism drives the air guide sleeve 1 and the rotating column 12 to rotate, and the rotating column 12 drives the first helical blade 13 to rotate. After water flow enters the installation barrel 3, the second spiral blade 14 guides the water flow, different components in the water flow can be distributed uniformly, water quality is monitored by the water quality sensor 15, the time required by monitoring is saved, the monitoring efficiency is improved, whether underground water or other layer mine water flows into the installation barrel or not is judged through the monitored water quality component change of the mine water, when underground water or other layer mine water which flows into the installation barrel is doped in the monitored water, a signal is sent to the central controller 16, the audible and visual alarm 17 is started to give an alarm, the early warning efficiency is effectively improved, workers can evacuate timely, and the personnel safety can be guaranteed.

In an alternative embodiment, the first mounting table 5 and the second mounting table 30 are both of a cylindrical structure, and both the first mounting table 5 and the second mounting table 30 are provided with a central hole, specifically, the first mounting table 5 is provided with a first central hole, and the first rotating shaft passes through the first central hole and is connected with the output shaft of the motor 6; the second mounting table 30 is provided with a second central hole, the water quality sensor 15 is mounted in the second central hole, and the front end of the water quality sensor 15 extends into the mounting cylinder 3.

In an alternative embodiment, the mounting enclosure 18 is a sealed box structure including top, bottom and side walls that are integrally formed or sealingly joined together. The central controller 16 and the motor 6 are installed in the inner space of the installation cover 18.

In an alternative embodiment, the bottom wall of the mounting cover 18 is provided with a first mounting opening and a second mounting opening, first ends of the first mounting platform 5 and the second mounting platform 30 are fixedly connected with the outer peripheral surface of the mounting cylinder 3, second ends of the first mounting platform 5 and the second mounting platform 30 are both positioned in the inner space of the mounting cover 18, the first mounting platform 5 is hermetically mounted in the first mounting opening through a sealing ring, and the second mounting platform 30 is hermetically mounted in the second mounting opening through a sealing ring; the periphery wall of first mount table 5 sets up first boss, and first boss is used for the first installing port of fixed support, and the periphery wall of second mount table 30 sets up the second boss, and the second boss is used for the second installing port of fixed support, and the sealing washer setting realizes sealedly on first boss and second boss. A first through hole and a second through hole are formed in the outer peripheral surface of the mounting cylinder 3, the first through hole of the mounting cylinder 3 corresponds to a first center hole of the first mounting platform 5 and allows a first rotating shaft to penetrate through, and the first rotating shaft is in sealed rotating connection with the first center hole; the second through hole of the mounting cylinder 3 corresponds to the second center hole of the second mounting platform 30, the water quality sensor 15 is arranged in the second through hole of the mounting cylinder 3 and the second center hole of the second mounting platform 30, and the front end of the water quality sensor 15 penetrates through the second through hole of the mounting cylinder 3 and extends into the mounting cylinder 3.

Considering that the traditional water quality sensors 15 are all rigidly mounted, the water quality sensors 15 cannot be moved once mounted in the test process, and are easily damaged once the water quality sensors are impacted by particles. In this embodiment, the mine water flowing into the installation cylinder 3 inevitably carries particulate matter impurities with a certain particle size, and the flowing water of the mine water in the installation cylinder 3 is high, so that the particulate matter impurities with high speed collide with the water quality sensor 15, and the water quality sensor 15 is easily damaged. Therefore, in view of the above problems, in the preferred embodiment of the second mounting platform 30 in this embodiment, the water quality sensor 15 is flexibly mounted, the aperture of the second central hole of the second mounting platform 30 is larger than the outer diameter of the water quality sensor 15, and the shock absorbing member is mounted in the second central hole, that is, the water quality sensor 15 is mounted in the second central hole through the shock absorbing member, and the shock absorbing member can reduce the impact damage of the particulate matter impurities in the mine water to the water quality sensor 15, prolong the service life of the water quality sensor 15, and ensure the continuity and reliability of the monitoring result.

Specifically, one structure of the damper is an elastic filler, such as elastic rubber, the diameter of the second center hole is larger than the outer diameter of the water quality sensor 15, and the annular space between the water quality sensor 15 and the second center hole is filled with elastic rubber, so that the damper not only has a damping function, but also has a sealing function.

Specifically, another structure of the damping member is a spring, a plurality of springs are installed in the annular space between the water quality sensor 15 and the second center hole, the water quality sensor 15 is fixed in the second center hole by using the plurality of springs, preferably 4 springs, the first end of each spring is fixed on the hole wall of the second center hole, the second end of each spring abuts against the outer peripheral wall of the water quality sensor 15, or a connecting ring is sleeved on the lower portion of the water quality sensor 15, and the second end of each spring is connected with the connecting ring. Under the natural state, the springs are all in a stretching state, the water quality sensor 15 is located on the central line of the second central hole, when particles in mine water impact the water quality sensor 15, the water quality sensor 15 can swing in the downstream direction to extrude the springs in the downstream direction, the water quality sensor 15 is reset under the action of tension of the springs in the upstream direction, and the shock absorption effect is achieved in the process.

In order to further reduce the possibility that the particles carried in the mine water flow impact the water quality sensor to cause damage, the upper aperture of the second central hole of the second mounting platform 30 is smaller than the lower aperture, the aperture of the second central hole is gradually enlarged from top to bottom, the longitudinal section of the second central hole is in a horn shape or a splayed shape, the lower space of the second central hole forms a swinging space, after the water quality sensor 15 is installed in the second central hole, the upper part of the water quality sensor 15 is rotatably connected with the upper part of the second central hole through a spherical hinge, and the lower part of the water quality sensor 15 can swing in the swinging space under the impact of the mine water.

In an alternative embodiment, a damping member is arranged in the second center hole in a horn-shaped or splayed structure, that is, an elastic filler is filled in the swing space of the second center hole, or a spring is arranged in the swing space, the swing space at the lower part of the second center hole allows the lower part of the water quality sensor 15 to swing within a small range, and the damping member can further reduce the impact damage and can timely reset the water quality sensor 15. The second centre bore of second mount table 30 sets up the swing space that supplies water quality sensor 15, sets up the damper in the swing space simultaneously, with 15 flexible mounting of water quality sensor, dual damage prevention structure can effectively prevent to lead to damaging because of the particulate matter striking water quality sensor that smugglies secretly in the mine rivers, has promoted monitoring devices's job stabilization nature.

In an alternative embodiment, the air guide sleeve 1 is of a hemispherical structure, the direction of the hood-shaped protrusion is opposite to the direction of water flow, the guide groove 101 is arranged on the outer circumferential surface of the air guide sleeve 1, the guide groove 101 is arranged in an arc shape, and the plurality of water inlet holes 102 are uniformly arranged at the bottom of the guide groove 101. When water flows to the air guide sleeve 1, the water flows along the outer peripheral surface of the air guide sleeve 1, because of the coanda effect, the water easily flows on the outer surface of the air guide sleeve 1 with a hemispherical cover-shaped structure, easily flows into the air guide groove 101, flows along the arc-shaped air guide groove 101, and passes through the air guide sleeve 1 through the water inlet hole 102 in the flowing process, crushed stones can flow outwards when impacting the air guide sleeve 1 in a rotating state, and are not easy to enter the air guide groove 101 and the water inlet hole 102, so that the water inlet hole 102 is not easy to block, even if the crushed stones enter the air guide groove 101, the crushed stones can flow out from the terminal end of the air guide groove 101, and the first filter plate 2 plays a further protective role on the premise of ensuring the smooth flowing of the water flow.

In an alternative embodiment, the central line of the water inlet hole 102 is not perpendicular to the bottom of the guiding gutter 101, and the water inlet hole 102 is gradually inclined in the axial direction towards the water flow direction, that is, the plurality of water inlet holes 102 are gradually inclined in the axial direction towards the air guide sleeve 1 along the upstream to downstream direction of the water flow. Through setting up inlet opening 102 along the axial to the slope of rivers direction gradually, be favorable to rivers to flow, enable more smooth and easy the passing through inlet opening 102 of rivers, inlet opening 102 aperture is crescent along the rivers direction, debris such as rubble are difficult for blockking up inlet opening 102.

In an alternative embodiment, the opening edge of the water inlet hole 102 is provided with a round corner, so as to further improve the smoothness of the water flow.

In an optional embodiment, the first filter plate 2 and the second filter plate 4 are both provided with filter holes, the aperture of each filter hole gradually increases along the water flow direction, a plurality of first filter holes are uniformly distributed on the first filter plate 2, a plurality of second filter holes are uniformly distributed on the second filter plate 4, and the aperture of each first filter hole is smaller than that of each second filter hole, so that sundries can be further prevented from being blocked.

In an optional embodiment, colliery water inrush in advance warning monitoring devices in pit still is provided with prevents down-flow device, prevents down-flow device dismantles and sets up in installation section of thick bamboo 3 and be located the low reaches of second filter plate 4, that is to say, first filter plate 2, second filter plate 4 and prevent down-flow device all dismantle the setting in installation section of thick bamboo 3 and set up along the rivers flow direction, prevent down-flow water backward flow and flow into in installation section of thick bamboo 3 through setting up and prevent down-flow device in can preventing to effectively prevent down the debris in the perfusion water from blockking up the second filter plate, and guarantee the accuracy of water quality sensor 15 monitoring results.

In an alternative embodiment, as shown in fig. 6, the backflow preventing device comprises a partition plate 32, the top end of the partition plate 32 is rotatably connected with the inner wall of the installation cylinder 3, the shape of the partition plate 32 is matched with the shape of the inner wall of the installation cylinder 3, and the partition plate 32 can be opened under the impact of the upstream mine water and closed under the impact of the self gravity or the backflow mine water; the top of baffle 32 sets up to the upstream direction slope, and the inner wall of installation section of thick bamboo 3 sets up spacing portion, and spacing portion is annular or oval annular structure, and spacing portion is used for restricting the baffle 32 and can only swing to the downstream direction of spacing portion, and the outer edge periphery of baffle 32 can be laminated with the spacing portion on the installation section of thick bamboo 3 inner wall. In a natural state, the partition plate 32 sags under the action of gravity, the periphery of the upstream surface of the partition plate 32 is in sealing contact with the whole limiting part at the moment, and the water outlet end of the mounting cylinder 3 is separated from the second filter plate 4, so that the mine water flowing backwards in the downstream is prevented from reversely entering the mounting cylinder 3 through the water outlet of the mounting cylinder 3. When the flowing water of the upstream mine enters the installation cylinder 3, the flowing water sequentially flows through the first filter plate 2 and the second filter plate 4, the flowing water passing through the second filter plate 4 impacts the partition plate 32, the partition plate 32 is opened, and the flowing water in the mine is normally discharged from a water outlet of the installation cylinder 3; when the upstream water flow is small, the partition plate 32 resets by self gravity to separate the water outlet end of the mounting cylinder 3 from the second filter plate 4, and meanwhile, a certain water storage amount can be kept in the mounting cylinder 3 all the time, so that the water quality sensor 15 can monitor water quality data, and the monitoring effect is improved; when mine water flows backward in the downstream, the backward-flowing mine water impacts the back water surface of the partition plate 32, so that the partition plate 32 can be rapidly reset in the upstream direction, the water outlet end of the mounting cylinder 3 is timely separated from the second filter plate 4, impurities carried in the backward-flowing water are prevented from blocking the second filter plate 4, and the working stability of the monitoring device is ensured.

In an alternative embodiment, the partition 32 is formed of two parts, an upper part having a density greater than that of the lower part, the upper part being made of a dense metal material, and the lower part being made of a lightweight plastic or lightweight alloy, the arrangement being such that the center of gravity of the partition 32 is located above, facilitating opening under the impact of mine water.

In an optional embodiment, the longitudinal section of the partition plate 32 is a symmetrical figure and has a longitudinal symmetry axis, the effective longitudinal blocking length L of the partition plate 32 is greater than the diameter D of the inner wall of the installation cylinder 3, after the partition plate 32 is installed in the installation cylinder 3, the distance between the top end and the bottom end of the partition plate 32 is L in a natural state, the gravity center of the partition plate 32 is located on the longitudinal symmetry axis of the partition plate 32 and is located 1/5-1/4L below the top end of the partition plate 32, the structural design can ensure that the partition plate 32 can be opened smoothly when the water flow is small, meanwhile, the partition plate can be swung back and reset at the first time when the backward flow of the mine water occurs, and the backward flow of the mine water is prevented from blocking the second filter plate 4. Meanwhile, the longitudinal symmetry axis of the partition plate 32 forms an included angle of 5-8 degrees with the vertical direction, and the angle arrangement avoids the problem that a certain amount of mine water stored in the mounting cylinder 3 cannot realize the continuity of the monitoring result of the water quality sensor when the water amount is low due to the fact that the partition plate 32 is too large in angle and cannot be opened difficultly and too small in angle.

In an alternative embodiment, the upstream surface of the diaphragm 32 is a convex curve, which is convex toward the upstream, and the downstream surface of the diaphragm 32 is a concave curve, which increases the ineffective loss of the water flow when impacting the diaphragm 32, and decreases the ineffective loss of the water flow when impacting the valve plate, from the fluid mechanics perspective. When water flow impacts the water-facing surface of the partition plate 32, the convex curved surface can delay the partition plate 32 to be opened, so that the opening difficulty is increased, and a certain amount of mine water is stored in the installation cylinder 3; when mine water flows backward, the backward flowing mine water directly impacts one side of the back surface of the partition plate 32, and the concave curved surface can enhance the effect of closing the partition plate 32, so that the time for rapidly resetting the partition plate 32 in the upstream direction can be further shortened, the water outlet end of the mounting cylinder 3 is timely separated from the second filter plate 4, the second filter plate 4 is prevented from being blocked by impurities carried in the backward flowing water, and the working stability of the monitoring device is ensured.

In an optional embodiment, a water level sensor is arranged on the back surface of the partition plate 32, when mine water flows backward, the partition plate 32 is reset and closed to separate the water outlet end of the mounting cylinder 3 from the second filter plate 4, the water level sensor monitors the change of the water level outside the partition plate 32 at the moment, when the water level outside the partition plate 32 rapidly rises to the height of a water level threshold value within a certain time, it is indicated that the underground water inrush condition may occur at the downstream of a monitoring point, so that the mine water flows backward, the water level sensor sends an alarm signal to the central controller 16 at the moment, the central controller 16 controls the audible and visual alarm 17 to give an alarm, the vibration sensor 21, the water quality sensor 15 and the water level sensor are used for monitoring at the same time, and the monitoring range is wider.

In an alternative embodiment, the backflow preventing device is arranged 30-50cm upstream from the water outlet of the installation cylinder 3, and the design can prevent sundries in flowing water outside the installation cylinder 3 from accumulating on the periphery of the partition plate 32 and affecting the normal opening and closing of the partition plate 32.

In an alternative embodiment, the driving mechanism comprises a motor 6, a first rotating shaft 7, a first bevel gear 8, a second bevel gear 9, a third bevel gear 31, a second rotating shaft 10, a third rotating shaft 11, a spherical cover 28 and a fixing rod 29, the motor 6 is arranged on the first mounting platform 5, the motor 6 is in driving connection with the first rotating shaft 7, the first rotating shaft 7 is vertically arranged, the first rotating shaft 7 is rotatably arranged on the first mounting platform 5, the bottom end of the first rotating shaft 7 is connected with the first bevel gear 8, the second bevel gear 9 and the third bevel gear 31 are all positioned inside the spherical cover 28, the first bevel gear 8 is simultaneously in meshing connection with the second bevel gear 9 and the third bevel gear 31, the second bevel gear 9 and the third bevel gear 31 are arranged side by side along the axial direction of the mounting barrel 3, the second rotating shaft 10 and the third rotating shaft 11 are both coaxially arranged with the mounting barrel 3, the second rotating shaft 10 and the third rotating shaft 11 are both rotatably arranged on the spherical cover 28, the second rotating shaft 10 penetrates through the first filter plate 2, two ends of the second rotating shaft 10 are respectively connected with the air guide sleeve 1 and the second bevel gear 9, two ends of the third rotating shaft 11 are respectively connected with the third bevel gear 31 and the rotating column 12, the spherical cover 28 is arranged on the fixing rod 29, and the fixing rod 29 is arranged on the inner wall of the mounting cylinder 3.

It should be noted that the motor 6 can drive the first rotating shaft 7 to rotate, the first rotating shaft 7 drives the first bevel gear 8 to rotate, the first bevel gear 8 drives the second bevel gear 9 and the third bevel gear 31 to rotate, the second bevel gear 9 drives the air guide sleeve 1 to rotate through the second rotating shaft 10, and the third bevel gear 31 drives the rotating column 12 to rotate through the third rotating shaft 11, so as to realize the rotation of the first helical blade 13, and the rotation of the air guide sleeve 1 and the first helical blade 13 can be realized through one motor 6, which has a compact structure, high energy utilization rate, and low manufacturing and use costs.

In an optional embodiment, the inner wall of the mounting cylinder 3 is provided with a second helical blade 14, the first helical blade 13 and the second helical blade 14 together guide the water flow, so that the water flow can stably and uniformly flow to the monitoring end of the water quality sensor 15, the second helical blade 14 is located outside the first helical blade 13, and the first helical blade 13 and the second helical blade 14 are provided with a spacing channel along the radial direction of the mounting cylinder 3, so that interference between the rotating first helical blade 13 and the stationary second helical blade 14 can be avoided.

In an optional embodiment, two water quality sensors 15 are arranged side by side along the water flow direction, when two water quality sensors 15 monitor that water quality is abnormal, an alarm is given, false alarm caused by a fault of one water quality sensor 15 is avoided, the bottom end of the water quality sensor 15 is arranged close to the front side surface of the second helical blade 14, water flow can flow to the bottom end of the water quality sensor 15 more uniformly, and monitoring accuracy is guaranteed.

In an alternative embodiment, the fixing frame 19 is a U-shaped structure, the U-shaped opening is arranged downward, and the fixing nails are arranged at the bottoms of the two ends of the fixing frame 19, so that the device can be conveniently fixed beside a drainage ditch.

In an optional embodiment, the coal mine underground water inrush early warning and monitoring device further comprises a vibration monitoring mechanism, and the vibration monitoring mechanism is fixed on the fixing frame 19 and is in contact with the inner wall of the coal mine roadway and used for monitoring vibration of the coal mine roadway. Specifically, the vibration monitoring mechanism includes a fixed plate 20, a vibration sensor 21, a mounting plate 22, a fixed platform 23, a screw 24, a knob 25 and a guide rod 26, the fixed plate 20 is disposed on the fixed frame 19, the vibration sensor 21 is disposed on the mounting plate 22, the vibration sensor 21 is in communication connection with the central controller 16, the fixed platform 23 is connected with the mounting plate 22, one end of the screw 24 is rotatably connected with the fixed platform 23, the other end of the screw 24 is connected with the knob 25, the screw 24 penetrates through the fixed plate 20 and is in threaded connection with the fixed plate 20, the guide rod 26 is disposed side by side with the screw 24, the end of the guide rod 26 is connected with the mounting plate 22, and the guide rod 26 is slidably disposed on the fixed plate 20.

It should be noted that the screw 24 can be driven to rotate by rotating the knob 25, the screw 24 drives the fixed platform 23 to move, the fixed platform 23 drives the mounting plate 22 to move, the guide rod 26 guides the moving direction of the mounting plate 22, the vibration sensor 21 moves along with the mounting plate 22, the vibration sensor 21 is adjusted to a position contacting with the inner wall of the coal mine tunnel, the vibration sensor 21 is used for monitoring the vibration of the tunnel, when the vibration of the inner wall of the tunnel is monitored, it is indicated that the underground water inrush situation is likely to occur in the coal mine, the vibration sensor 21 sends a signal to the central controller 16, the central controller 16 controls the audible and visual alarm 17 to give an alarm, the vibration sensor 21 and the water quality sensor 15 are used for monitoring simultaneously, and the monitoring range is wider.

In an alternative embodiment, a connecting plate 27 is connected to the end of the guide rod 26 away from the mounting plate 22, the screw 24 penetrates through the connecting plate 27, and the connecting plate 27 can prevent a worker from being scratched by the end of the guide rod 26 when the worker adjusts the vibration sensor 21, so that the operation is safer.

The coal mine underground water inrush early warning and monitoring device of the embodiment is used for carrying out water inrush early warning and monitoring underground coal mines, and comprises the following steps:

s1, placing the coal mine underground water inrush early warning monitoring device into a drainage ditch of a coal mine roadway, fixing the device by using a fixing frame 19, arranging the flow guide cover 1 forwards, arranging the flow guide cover 1, the first filter plate 2, the mounting cylinder 3 and the second filter plate 4 in a floating manner in water, and enabling water flow to flow along the outer surface of the flow guide cover 1;

s2, starting a driving mechanism and a water quality sensor 15, wherein the driving mechanism drives the guide cover 1 and the rotating column 12 to rotate, the rotating column 12 drives the first spiral blade 13 to rotate, crushed stones can be impacted out by the guide cover 1 when flowing to the guide cover 1, so that the water inlet hole 102 is not easily blocked, and when water flows to the first spiral blade 13, the first spiral blade 13 is utilized to guide water and the material components in the water are uniformly distributed;

s3, water enters the inner side of the flow guide cover 1 through the flow guide groove 101 and the water inlet hole 102 and sequentially passes through the first filter plate 2, the mounting cylinder 3 and the second filter plate 4, so that the flowing smoothness of water flow is ensured;

s4, the water quality sensor 15 detects water entering the installation barrel 3, water flow can flow to the water quality sensor 15 in a balanced mode, when water inrush does not occur, if the water quality detection result is normal water in a coal measure stratum, the water quality sensor 15 sends the detection result to the central controller 16, the audible and visual alarm 17 does not give an alarm, and the alarm indicates that the water is in the coal measure stratum; when the water quality sensor 15 detects that substances which permeate into the drainage ditch due to underground water burst are mixed in water, if the current water flow is detected to contain the Aoyi water or the old kiln water, the water quality sensor 15 sends a signal to the central controller 16, the central controller 16 controls the acoustic-optical alarm 17 to carry out acoustic-optical alarm, dangerous water quality reminding such as the Aoyi water or the old kiln water is sent out, the water quality of the detected water can be detected and judged in time when water burst occurs in a mine, the possibility of water burst is made, underground water burst early warning of the coal mine is effectively carried out, personnel can be evacuated in time, the safety of the personnel is guaranteed, and the underground water burst warning device can be widely applied to operation and use of underground geological personnel.

S5, adjusting the vibration monitoring mechanism to contact with the inner wall of the coal mine tunnel, and monitoring the vibration of the coal mine tunnel in real time by the vibration monitoring mechanism while the water quality sensor 15 detects the water entering the installation cylinder 3. Specifically, adjust shock sensor 21 to the position with the contact of coal mine tunnel inner wall, utilize shock sensor 21 to monitor the vibration in tunnel, when monitoring tunnel inner wall and take place the vibration, show that the colliery is likely to take place the unexpected water condition in pit, shock sensor 21 sends the signal to central controller 16, and central controller 16 control audible and visual alarm 17 reports to the police, utilizes shock sensor 21 and water quality sensor 15 to monitor simultaneously, and monitoring range is wider.

Compared with the prior art, the coal mine underground water inrush early warning monitoring device and method have the following beneficial technical effects:

2. Utilize the mount to fix this device on the escape canal next door, kuppe, first filter plate, installation section of thick bamboo and second filter plate are all placed in coal mine tunnel escape canal, and can not contact with the escape canal inner wall.

3. The driving mechanism drives the air guide sleeve and the rotating column to rotate, and the rotating column drives the first spiral blade to rotate. When rivers flow to kuppe department, rivers flow along the kuppe outer peripheral face, because the condaler effect, rivers easily flow on the kuppe surface of hemisphere cover column structure, easily flow to the guiding gutter in, flow along the guiding gutter of camber line shape, and pass the kuppe at flow in-process through the inlet opening, the rubble can flow to the outside when striking the kuppe under the rotating condition, be difficult for getting into in guiding gutter and the inlet opening, be difficult for blockking up the inlet opening, even if get into the guiding gutter, also can flow away from the terminal point end of guiding gutter, first filter plate plays further guard action under the prerequisite of guaranteeing that rivers smoothly flow.

4. After rivers get into the installation section of thick bamboo, carry out the water conservancy diversion by second helical blade to rivers, make the different composition in the rivers can distribute evenly, monitor quality of water by water quality sensor, save the required time of monitoring, improve monitoring efficiency to when monitoring that the aquatic is doped with from the groundwater of gushing into, send a signal to central controller, start audible-visual annunciator and report to the police, effectively improved early warning efficiency, be favorable to the staff in time to withdraw, be favorable to the security personnel safety.

Example 2

Before water burst in a mine, various signs can be generated, such as phenomena of slag falling of a working face roof, roof fall, support toppling or column breaking by beam breaking, soft bottom expansion, bottom expansion and cracking, cracks in surrounding rocks of a mining face and the like. At the initial stage of the precursor, cracks of the coal rock mass on the inner wall of the roadway and the coal face have obvious changes, such as the number of the cracks is increased (namely, the density of the cracks in a unit area is increased), the width of the cracks is increased, the length of the cracks is lengthened, and water seeps out from the cracks under most conditions.

Based on the above analysis, another specific embodiment of the present invention discloses a combined sensor monitoring device for mine water inrush disaster warning, as shown in fig. 7 to 10, the combined sensor monitoring device includes a rack 34, a telescoping mechanism, a rotating mechanism and a probe rod 45, the telescoping mechanism and the rotating mechanism are fixedly disposed on the rack 34, the telescoping mechanism is connected with the rotating mechanism, the rotating mechanism is connected with the probe rod 45, the telescoping mechanism is used for driving the rotating mechanism to move along a telescoping direction, and the rotating mechanism is used for driving the probe rod 45 to rotate and fix at a specified rotation angle position; a combination sensor is mounted on the outer periphery of the probe 45.

In an optional embodiment, a camera is installed at the front end of the probe rod 45, and during the process that the probe rod 45 extends into the detection hole, the camera is used for shooting the hole wall of the detection hole and acquiring a crack image and crack parameters of the hole wall of the detection hole.

In an alternative embodiment, the probe rod 45 is a hollow structure, the camera is detachably mounted at the front end of the probe rod 45, and the optical fiber cable of the camera is arranged in the hollow structure of the probe rod 45, and the detection process is the same as that of the mining borehole imager for detecting the borehole. The possibility of water inrush of the mine is pre-judged by detecting the change condition of the cracks in the holes, so that the monitoring result is more visual and reliable.

In this embodiment, the camera may be a camera of a mining borehole imager, that is, the existing mining borehole camera may be used, the host of the camera is composed of five systems of sealing, waterproofing, steering, film winding, lighting, photographing, light path reflection, direction indication, and the like, all elements of the camera are installed in a waterproof housing with a millimeter inner diameter, the camera is connected with a ground controller through a fiber optic cable, and the ground controller automatically controls the photographing operation in the photographing process.

In an alternative embodiment, the combined sensor on the probe 45 includes a humidity sensor, a water level sensor. Detecting a humidity parameter in the hole by using a humidity sensor, and prejudging mine water inrush according to the change condition of the humidity monitoring result parameter for multiple times; and (4) detecting whether accumulated water exists in the holes by using the water level sensor, and once the accumulated water exists in the detection holes and the water level rises, indicating that water seepage exists and the risk of water inrush exists. And comprehensively judging whether water seepage occurs in the detection holes or not according to the humidity parameter, the crack parameter and the water level parameter information in the detection holes, for example, when the humidity in the detection holes is obviously increased and the crack parameter changes to reach the threshold range of the water seepage, and the water level tends to rise when the accumulated water exists in the detection holes, so that the possibility that the cracks in the detection holes have water seepage and water burst can be judged.

In an optional embodiment, the combination sensor further comprises a temperature sensor and a water quality sensor, wherein the temperature sensor is used for detecting the temperature in the detection hole, if water seepage occurs in the detection hole, the water quality sensor detects the water quality of the seepage, and auxiliary reference is provided for the prediction of the water inrush result of the mine through the temperature parameter and the water quality parameter.

It should be noted that, in this embodiment, the water inrush warning monitoring result is made according to each monitoring parameter, and may be judged by an experienced technician or automatically judged by a computer processing system. Preferably, a computer processing system is adopted for automatic judgment, the computer processing system compares the monitored parameters such as temperature, humidity, crack, water level, water quality and the like with preset parameter threshold ranges, a fuzzy comprehensive judgment method, an artificial neural network, grey correlation analysis and other methods are utilized for carrying out pre-judgment on mine water inrush, a pre-judgment result is displayed on a remote monitoring screen, and once the pre-judgment of water inrush occurs, an alarm is given out.

In this embodiment, the telescopic mechanism includes a first support column 39, a top base 40, a telescopic electric cylinder 41, a lifting plate 42, a base plate 43, a central shaft 46, a second support column 47, a linear bearing 48 and a guide column 49, wherein the top base 40 is installed above the frame 34 through the first support column 39, the telescopic electric cylinder 41 is fixedly installed on the top base 40, the top end of the guide column 49 is fixedly installed on the top base 40, the linear bearing 48 is installed on the guide column 49, the lifting plate 42 is fixedly installed on the linear bearing 48, the tail end of a telescopic rod of the telescopic electric cylinder 41 is installed on the lifting plate 42 through a floating joint 54, and the base plate 43 is installed below the lifting plate 42 through the second support column 47.

The rotating mechanism comprises a connecting cylinder 35, a nut 36, a rotating cylinder 37, a servo driver 38, a rotating arm 44, a ball guide shaft 50, a key-free shaft bushing 51, a coupler 52, a bearing 53, a floating joint 54 and a bearing gland 55; the top end of the central shaft 46 is mounted in a mounting hole of the base plate 43 through a bearing 53, a bearing gland 55 is fixedly mounted on the bottom surface of the base plate 43 through a screw and the bearing gland 55 is pressed on the bearing 53, the lower end of the central shaft 46 is connected with the upper end of the ball guide shaft 50 through a coupler 52, the servo driver 38 is fixedly mounted in a central hole of the frame 34, the top end of the rotary cylinder 37 is mounted on the servo driver 38 through a screw, the nut 36 is mounted on the ball guide shaft 50 and the nut 36 is fixedly mounted at the bottom of the rotary cylinder 37, the connecting cylinder 35 is fixedly mounted at the lower end of the ball guide shaft 50 through a key-free shaft liner 51, one end of the rotary arm 44 is fixedly mounted on the bottom surface of the connecting cylinder 35, and the probe rod 45 is fixedly mounted in a mounting hole at the other end of the rotary arm 44.

In an optional embodiment, the bottom of the frame 34 is further provided with adjustable legs 33, the height of the adjustable legs 33 is adjustable, the number of the adjustable legs 33 is 4, the adjustable legs 33 are uniformly distributed at four corners of the bottom of the frame 34, and the horizontal state of the device installation is ensured through the height adjustable arrangement. Install pedal type single brake universal wheel on adjustable landing leg 33, after removing to the assigned position, step on the brake structure and make the universal wheel lock die, prevent to remove in monitoring process.

In an alternative embodiment, the servo driver 38 is a hollow structure, the bearing 53 is formed by combining two rows of radial spherical ball bearings facing each other, the top end of the central shaft 46 is provided with an annular clamping groove, an elastic collar for a shaft is installed in the annular clamping groove, and an annular adjusting gasket is installed between the bearing gland 55 and the bearing 53.

It should be noted that the combined sensor monitoring device for mine water inrush disaster warning shown in fig. 7-10 can realize the detection of the floor detection hole. Of course, detection of the detection holes in the top plate and the side wall of the roadway can be realized by structurally changing, for example, detection of the detection holes in the top plate can be realized by turning over the relevant components such as the telescopic mechanism, the rotating mechanism and the probe rod 45 for 180 degrees in the vertical direction, detection of the detection holes in the side wall of the roadway can be realized by turning over the relevant components such as the telescopic mechanism, the rotating mechanism and the probe rod 45 for 90 degrees, and details of the embodiment are omitted.

Taking the example that the combined sensor monitoring device for mine water inrush disaster early warning shown in fig. 7-10 detects the detection hole on the bottom plate, the method for early warning and monitoring the mine water inrush disaster comprises the following steps:

a) the method comprises the steps of drilling a plurality of groups of detection holes according to the detection requirements by a drilling machine, wherein each group of detection holes comprises a plurality of detection holes, the detection holes of each group are uniformly distributed on the same circumference, the number of the detection holes of each group is preferably 4-6, the depth of each detection hole is 0.5-2m, and the combined sensor monitoring device for mine water inrush disaster early warning is fixed at the central position of the circumference where each group of detection holes are located. A plurality of groups of detection holes are distributed at different positions of a mine, and a plurality of monitoring devices are utilized to realize multi-position synchronous monitoring in the mine.

b) The adjustable supporting legs 33 are adjusted to keep the top surface of the frame 34 horizontal, so that the center line of the rotary cylinder 37 passes through the center of the circle where the detection hole is located, and the servo driver 38 rotates to drive the connecting cylinder 35 on the rotary cylinder 37 to rotate, thereby driving the rotating arm 44 to rotate to the current detection hole.

c) The telescopic electric cylinder 41 moves downwards to drive the lifting plate 42 to move downwards along the guide post 49, and further to drive the central shaft 46 on the base plate 43 to move downwards, so that the rotating arm 44 on the ball guide shaft 50 moves downwards, the probe rod 45 is inserted into the hole bottom of the detection hole from the hole opening of the current detection hole, and the camera and the sensor on the probe rod 45 acquire parameter information such as cracks, humidity, water level and the like in the detection hole in the insertion process.

d) After the measurement is completed, the telescopic electric cylinder 41 drives the probe rod 45 to rise to the initial position, and then the servo driver 38 drives the probe rod on the rotating arm 44 to rotate to the next detection hole, so as to detect the next detection hole.

e) Repeating the steps c) and d) to finish detecting all the detection points. After a certain time interval, all the detection points are monitored again, and the detection points are repeatedly monitored according to a preset time interval (such as every 2 hours), so that the monitoring continuity is ensured.

In the step c, in the process that the probe rod 45 extends into the detection hole, the camera shoots the hole wall of the detection hole to obtain a three-dimensional virtual histogram of the hole wall of the detection hole and a borehole wall expansion diagram, the computer processing unit processes the image obtained by the camera to obtain a fracture image and identify fracture parameters, the fracture parameters comprise fracture quantity, fracture density and fracture length parameters, the serial number and the detection batch of the detection hole are recorded, and the fracture image and the fracture parameters in the detection hole processed by the computer processing unit are transmitted to the remote control end and displayed on a screen of the remote control end; whether the humidity parameter in the humidity sensor detection hole and the water level sensor detection hole have accumulated water and water level change information or not is transmitted to the remote control end through the humidity parameter and water level parameter information in the detection hole and is displayed on a screen of the remote control end.

Detecting all detection holes arranged in the mine by using a camera, detecting the development change condition of cracks in the holes at intervals for a plurality of times, and if the monitoring result of the same detection hole for a plurality of times shows: the fracture is widened, lengthened and increased in density, and the change degree reaches a certain degree, namely a fracture parameter change threshold is preset, and when the fracture parameter change reaches a threshold range, water inrush is possible; if the monitoring results of the detection holes at different positions have regular changes, and the crack monitoring results are displayed on the whole: the cracks are widened, lengthened and increased in density, and the change degree of the cracks of at least part of the detection holes reaches the preset crack parameter change threshold range, so that the positions where water inrush possibly occurs can be judged in advance, and the positions where water inrush possibly occurs can be processed, such as measures of grouting an anchor rope to anchor and block the cracks, and the like, so that loss caused by water inrush events is avoided or reduced.

Compared with the prior art, the combined sensor monitoring device for mine water inrush disaster early warning of the embodiment has the following beneficial effects:

1. the adjustable supporting legs are arranged at the bottom of the rack, the pedal type single-brake universal wheels are mounted on the adjustable supporting legs, so that the adjustable supporting legs are convenient to move, and meanwhile, the adjustable supporting legs are supported during working, and the universal wheels are separated from the ground for contact, so that the fixing during working is realized, and the stability and reliability are realized; the ball guide shaft and the central shaft are both of hollow structures, so that the arrangement of cables is convenient; the hollow servo driver is adopted, so that the central shaft penetrates out of the central hole of the servo driver and is connected with the ball guide shaft, and the lifting movement of the rotating arm can be realized while the central shaft rotates; the upper end of the central shaft is combined by double-row face-to-face annular spherical ball bearings, and the axial clearance of the bearings is adjusted by an annular adjusting pad, so that the structural rigidity and the rotation precision of the central shaft are greatly improved, and the monitoring efficiency is improved; the servo driver drives the ball guide shaft and the nut to integrally rotate together, the upper end of the ball guide shaft is connected with the central shaft through the coupler, and the central shaft is supported on the base plate through the bearing, so that the superposition operation of rotary motion and lifting motion is realized; the telescopic electric cylinder is matched with the ball guide shaft, so that the precision and the stability of the lifting motion of the telescopic electric cylinder are improved; the monitoring of a plurality of detection points is realized at one time through rotation and lifting movement, the working efficiency is obviously improved, the operation time is saved, and the monitoring efficiency is improved.

2. The front end of the probe rod is provided with the camera, the probe rod is provided with the combined sensor, such as a humidity sensor and a water level sensor, when the probe rod extends into the detection hole, the camera shoots the hole wall of the detection hole and obtains a crack image and crack parameters of the hole wall of the detection hole, the humidity sensor detects the humidity parameter in the detection hole and the water level sensor detects the water level information in the detection hole, whether water seepage occurs in the detection hole or not is comprehensively judged according to the humidity parameter, the crack parameter and the water level parameter information in the detection hole, for example, when the humidity in the detection hole is obviously increased and the change of the crack parameter reaches the threshold range of the water seepage, the water level in the detection hole is monitored to have water accumulation and rise, and therefore the possibility that water seepage occurs in the crack in the detection hole can be judged. The water inrush possibility is judged by integrating multiple parameters, and the monitoring result is more reliable.

Example 3

The invention further discloses a water sump water level monitoring device, which is arranged in a water sump and used for monitoring the water level in the water sump in real time, judging whether water inrush occurs in a mine and the water quantity in the water sump according to the water level change condition in the water sump, and timely giving out water inrush alarm, so that personnel in a mining area can take subsequent measures of pumping water and rescuing equipment according to the water quantity in the water sump.

As shown in fig. 11 to 13, the water level monitoring device of the water sump includes a mounting frame 57, a first hinge 58, a multicolor indicator 59, a power relay conversion box 60, a magnetic buckle 61, a treble alarm module 62, a water level detection module 63, a first level probe 64, a second level probe 65, a left half protective door 66, a right half protective door 67, an iron sheet 68, a second hinge 69, a handle 70, a first alarm speaker 71 and a second alarm speaker 72, the multicolor indicator 59 is fixedly mounted on the top surface of the mounting frame 57, the left half protective door 66 is mounted on the front side surface of the mounting frame 57 through the first hinge 58, the right half protective door 67 is mounted on the right side surface of the left half protective door 66 through the second hinge 69, the iron sheet 68 is mounted on the inner side of the right half protective door 67, the power relay conversion box 60, the treble alarm module 62 and the water level detection module 63 are all fixedly mounted in the mounting frame 57, first-level water level probe 64 and second-level water level probe 65 are connected with water level detection module 63 through cables, first alarm horn 71 and second alarm horn 72 are both installed on the right side of installation frame 57 and first alarm horn 71 and second alarm horn 72 are both connected with high-pitch alarm module 62 through cables, magnetic hasp 61 is fixedly installed in installation frame 57, and air switch is installed on power relay conversion box 60.

In an alternative embodiment, handles 70 are mounted on both the left half guard door 66 and the right half guard door 67 to facilitate opening and closing of the guard doors.

In an alternative embodiment, the bottom of the mounting frame 57 is provided with the supporting legs 56, the height of the supporting legs 56 can be adjusted, the number of the supporting legs 56 is 4, the supporting legs 56 are uniformly distributed at four corners of the bottom of the mounting frame 57, and the horizontal state of the device installation is ensured by adjusting the height of the supporting legs 56. The supporting legs 56 are provided with pedal type single-brake universal wheels, and after the universal wheels are moved to a designated position in a designated water sump, the pedal type single-brake universal wheels are locked by a brake structure, so that the water level monitoring device is prevented from moving in the monitoring process.

In an alternative embodiment, the multi-color indicator 59 is composed of a red LED1, a yellow LED2, and a green LED3 in sequence from top to bottom.

In an alternative embodiment, the power relay switch box 60 outputs 24V intrinsically safe power.

As shown in fig. 14, the water level detection module 63 is composed of a three-terminal voltage stabilizing chip LM7815, a manual alarm button SB, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a capacitor C1, a capacitor C2, a capacitor C3, a relay K1, a relay K2, a diode D1, a diode D2, a transistor a1 and a transistor a2, a pin 1 of the three-terminal voltage stabilizing chip LM7815 is connected with an output pin 24V of the power relay switching box 60, a pin 2 of the three-terminal voltage stabilizing chip LM7815 is connected with an output pin 0V of the power relay switching box 60, an upper end of a pin 3 of the three-terminal voltage stabilizing chip LM7815 and an upper end of the capacitor C2 are both connected with a left end of the resistor R2, a right end of the resistor R2, an upper end of the relay K2, an upper end of the resistor R2 and an upper end of the capacitor C2 are both connected with a lower end of the relay 2, and a lower end of the relay K2, and a lower end of the relay, The lower end of a diode D1 and the upper end of a resistor R7 are connected with the collector of a triode A1, the lower end of a resistor R7 is connected with the upper end of a normally open contact SB1 of a manual alarm button SB, the upper end of a normally closed contact SB2 of the manual alarm button SB is connected with the emitter of a triode A1, the base of a triode A1 is connected with the left end of a resistor R6, the right end of a resistor R6 is respectively connected with the left ends of a secondary water level probe 65 and a normally open contact K1-1 of a relay K1, the right end of the normally open contact K1-1 of the relay K1 and a primary water level probe 64 are connected with the left end of a resistor R1, the right end of a resistor R1 and the upper end of a capacitor C1 are both connected with the base of a triode A1, the lower end of a coil of the relay K1 and the lower end of the diode D1 are both connected with the collector of the triode A1, the lower end of the resistor R1 is connected with the upper end of a red light LED1, the lower end of the resistor R1 is connected with the upper end of a yellow light SB1, the lower end of a yellow light LED2 is connected with the upper end of a relay K2 normally open contact K2-1, the lower end of a green light LED3 is connected with the upper end of a relay K2 normally closed contact K2-2, a capacitor C1, the lower end of a manual alarm button SB normally open contact SB1, the lower end of a manual alarm button SB normally closed contact SB2, the right end of a capacitor C3, an emitter of a triode A2, the lower end of a manual alarm button SB3, the lower end of a relay K2 normally open contact K2-1, the lower end of a relay K2 normally closed contact K2-2 and the left end of a capacitor C2 are connected with a pin 2 of a three-terminal voltage stabilizing chip 7815.

In an alternative embodiment, the treble alarm module 62 is internally provided with a normally open contact K1-2 of a relay K1 and a normally open contact K2-3 of a relay K2, the normally open contact K1-2 of the relay K1 is connected with the second alarm horn 72 in series, and the normally open contact K2-3 of the relay K2 is connected with the first alarm horn 71 in series.

In an alternative embodiment, the treble alarm module 62 has a voltage regulator circuit and a battery installed therein.

The working process of the water sump water level monitoring device of the embodiment comprises the following steps:

a) 24V intrinsic safety electricity transmitted by the power relay conversion box 60 is stabilized and converted into 15V intrinsic safety electricity through the three-terminal voltage stabilizing chip LM7815, and at the moment, the green light LED3 is on;

b) when the water level reaches the first-level water level probe 64, the base electrode and the emitter electrode of the triode A2 form a loop through the resistor R5, the triode A2 is conducted, the coil of the relay K2 is electrified, the normally open contact K2-1 of the relay K2 is closed, the yellow light LED2 is lighted, the normally closed contact K2-2 of the relay K2 is disconnected, the green light LED3 is turned off, the normally open contact K2-3 of the relay K2 is closed, and the first alarm horn 71 is electrified to alarm;

c) if the water level continues to rise and reaches the secondary water level probe 65, the base electrode and the emitter electrode of the triode A1 form a loop through the resistor R6, the triode A1 is conducted, the coil of the relay K1 is electrified, the normally open contact K1-1 of the relay K1 is closed, the normally open contact K1-2 of the relay K1 is closed, the red light LED1 is lightened, the normally open contact K1-3 of the relay K1 is closed, and the second alarm horn 72 is electrified to alarm;

d) when the water level is reduced between the primary water level probe 64 and the secondary water level probe 65, the triode A1 is disconnected, the coil of the relay K1 loses electricity, the normally open contact K1-1 of the relay K1 is disconnected, the normally open contact K1-2 of the relay K1 is disconnected, the red light LED1 is turned off, the normally open contact K1-3 of the relay K1 is disconnected, and the second alarm horn 72 loses electricity to stop alarming;

e) when the water level is reduced to the lower part of the first-level water level probe 64, the triode A2 is disconnected, the coil of the relay K2 loses power, the normally open contact K2-1 of the relay K2 is disconnected, the yellow light LED2 is turned off, the normally closed contact K2-2 of the relay K2 is closed, the green light LED3 is turned on, meanwhile, the normally open contact K2-3 of the relay K2 is disconnected, and the first alarm horn 71 loses power and stops giving an alarm.

Specifically, 24V intrinsically safe electricity transmitted by the power relay conversion box 60 is stabilized to 15V intrinsically safe electricity through the three-terminal voltage stabilizing chip LM7815, and at the moment, the green light LED3 is on; when the water level reaches the first-level water level probe 64, the base electrode and the emitter electrode of the triode A2 form a loop through the resistor R5, the triode A2 is conducted, the coil of the relay K2 is electrified, the normally open contact K2-1 of the relay K2 is closed, the yellow light LED2 is lighted, the normally closed contact K2-2 of the relay K2 is disconnected, the green light LED3 is turned off, the normally open contact K2-3 of the relay K2 is closed, and the first alarm horn 71 is electrified to alarm; if the water level continues to rise and reaches the secondary water level probe 65, the base electrode and the emitter electrode of the triode A1 form a loop through the resistor R6, the triode A1 is conducted, the coil of the relay K1 is electrified, the normally open contact K1-1 of the relay K1 is closed, the normally open contact K1-2 of the relay K1 is closed, the red light LED1 is lightened, the normally open contact K1-3 of the relay K1 is closed, and the second alarm horn 72 is electrified to alarm; when the water level is reduced between the primary water level probe 64 and the secondary water level probe 65, the triode A1 is disconnected, the coil of the relay K1 loses electricity, the normally open contact K1-1 of the relay K1 is disconnected, the normally open contact K1-2 of the relay K1 is disconnected, the red light LED1 is turned off, the normally open contact K1-3 of the relay K1 is disconnected, and the second alarm horn 72 loses electricity to stop alarming; when the water level is reduced to the lower part of the first-level water level probe 64, the triode A2 is disconnected, the coil of the relay K2 loses power, the normally open contact K2-1 of the relay K2 is disconnected, the yellow light LED2 is turned off, the normally closed contact K2-2 of the relay K2 is closed, the green light LED3 is turned on, meanwhile, the normally open contact K2-3 of the relay K2 is disconnected, and the first alarm horn 71 loses power and stops giving an alarm; in addition, the manual alarm button SB can be pressed, at the moment, the normally open contact SB1 of the manual alarm button SB is closed, the coil of the relay K1 is electrified, the normally open contact K1-1 of the relay K1 is closed, the normally open contact K1-2 of the relay K1 is closed, the red light LED1 is lightened, the normally open contact K1-3 of the relay K1 is closed, the second alarm horn 72 is electrified for alarm, and the normally closed contact SB2 of the manual alarm button SB is opened; when the manual alarm button SB is released, the normally open contact SB1 of the manual alarm button SB is disconnected, the coil of the relay K1 loses power, the normally open contact K1-1 of the relay K1 is disconnected, the normally open contact K1-2 of the relay K1 is disconnected, the red light LED1 is turned off, the normally open contact K1-3 of the relay K1 is disconnected, the second alarm horn 72 loses power to stop alarming, and the normally closed contact SB2 of the manual alarm button SB is closed.

Compared with the prior art, the water sump water level monitoring device of this embodiment, simple structure, convenient operation can the water level in the real-time supervision water sump, judges whether the mine takes place the gushing water according to the water level change condition in the water sump, and convenient operation, monitoring result are more reliable, and water sump water level monitoring device can in time remind the staff when taking place the gushing water, and the early warning is effectual. The installation frame protection door adopts a folding structure, and the right half protection door and the left half protection door can be folded together, so that the installation and maintenance in the installation frame are more convenient, and the operation is more convenient and reliable; and meanwhile, the bottom of the installation frame is provided with the supporting legs and the supporting legs are provided with universal wheels, so that the installation frame is convenient to move and operate and is convenient to fix. The water level detection module has the advantages of simple structure, low cost and high working reliability.

Example 4

The invention further discloses a mine water inrush disaster monitoring system, which comprises the coal mine underground water inrush early warning monitoring device in embodiment 1, one or both of the mine water inrush disaster early warning combination sensor monitoring device in embodiment 2 and the water sump water level monitoring device in embodiment 3.

In an optional embodiment, the mine water inrush disaster monitoring system includes the underground coal mine water inrush early warning monitoring device of embodiment 1, the combined sensor monitoring device of mine water inrush disaster early warning of embodiment 2, and the sump water level monitoring device of embodiment 3.

Compared with the prior art, the mine water inrush disaster monitoring system of the embodiment utilizes the water quality monitoring mechanism of the underground water inrush early warning and monitoring device for monitoring the water quality change of mine water, the vibration monitoring mechanism monitors the vibration signal of a coal mine tunnel in real time, the water level monitoring device of the water bin monitors the water level in the water bin in real time, whether water inrush occurs is judged according to the water level change condition in the water bin, the combined sensor monitoring device for mine water inrush disaster early warning is utilized for monitoring the temperature, cracks, crack seepage water and seepage water quality conditions in a tunnel drilling hole in real time, the mine water inrush disaster is comprehensively judged by monitoring a plurality of positions of a drainage ditch, the water bin, a tunnel bottom wall, a side wall and the like in a mine simultaneously, and based on multiple parameters of the water quality, the water level, the vibration of a roadway wall, the cracks, the seepage water seepage condition in the cracks and the like of the mine water inrush disaster, so that the monitoring result is more accurate, More reliable, monitoring system can in time remind the staff when taking place the mine and suddenly cut into water, helps judging the water burst water source according to the alarm position moreover and comes to, and the early warning is effectual.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A coal mine underground water inrush early warning monitoring device is characterized by comprising a water quality monitoring mechanism, a central controller (16) and an audible and visual alarm (17);

the water quality monitoring mechanism comprises a flow guide cover (1), an installation cylinder (3), a rotating column (12), a first helical blade (13), a water quality sensor (15) and an installation cover (18);

the air guide sleeve (1) is provided with a plurality of water inlet holes (102) and is rotatably arranged at the water inlet end of the mounting cylinder (3); the first helical blade (13) is arranged on the rotating column (12), the rotating column (12) and the first helical blade (13) are coaxially arranged in the mounting cylinder (3), and a water flowing channel is arranged between the first helical blade (13) and the inner wall of the mounting cylinder (3);

the mounting cover (18) is fixed on the outer peripheral face of a mounting cylinder (3) through the mounting table subassembly, the mounting table subassembly includes first mounting table (5) and second mounting table (30), be provided with on first mounting table (5) and be used for driving kuppe (1) and rotating post (12) pivoted actuating mechanism, inside water quality sensor (15) inserted mounting cylinder (3) through second mounting table (30), audible-visual annunciator (17) set up at mounting cover (18) top, water quality sensor (15) and central controller (16) communication connection, central controller (16) and actuating mechanism and audible-visual annunciator (17) are control connection respectively.

2. The coal mine underground water inrush early warning and monitoring device as claimed in claim 1, wherein a filter assembly is arranged in the installation cylinder (3), the filter assembly comprises a first filter plate (2) and a second filter plate (4), and the first filter plate (2) and the second filter plate (4) are sequentially and coaxially arranged at two ends of the installation cylinder (3) along a water flow direction.

3. The coal mine underground water inrush early warning and monitoring device as claimed in claim 2, wherein the air guide sleeve (1) is of a hemispherical structure, the guide groove (101) is formed in the outer peripheral surface of the air guide sleeve (1), the guide groove (101) is arranged in an arc shape, and the water inlet holes (102) are uniformly formed in the bottom of the guide groove (101).

4. The coal mine underground water inrush early warning and monitoring device as claimed in claim 1, wherein the water inlet hole (102) is gradually inclined towards the water flow direction along the axial direction, and the aperture of the water inlet hole (102) is gradually increased along the water flow direction.

5. The coal mine underground water inrush early warning and monitoring device as claimed in any one of claims 2 to 4, wherein the driving mechanism comprises a motor (6), a first rotating shaft (7), a first bevel gear (8), a second bevel gear (9), a third bevel gear (31), a second rotating shaft (10), a third rotating shaft (11), a spherical cover (28) and a fixing rod (29);

the motor (6) is arranged on the first mounting table (5), the motor (6) is in driving connection with the first rotating shaft (7), the first rotating shaft (7) is vertically arranged, the first rotating shaft (7) is rotationally arranged on the first mounting table (5), the bottom end of the first rotating shaft (7) is connected with the first bevel gear (8), the second bevel gear (9) and the third bevel gear (31) are all positioned on the inner side of the spherical cover (28), the first bevel gear (8) is simultaneously in meshing connection with the second bevel gear (9) and the third bevel gear (31), the second bevel gear (9) and the third bevel gear (93) are arranged side by side along the axial direction of the mounting cylinder (3), the second rotating shaft (10) and the third rotating shaft (11) are both coaxially arranged with the mounting cylinder (3), and the second rotating shaft (10) and the third rotating shaft (11) are both rotationally arranged on the spherical cover (28), the second rotating shaft (10) penetrates through the first filter plate (2), two ends of the second rotating shaft (10) are connected with the air guide sleeve (1) and the second bevel gear (9) respectively, two ends of the third rotating shaft (11) are connected with the third bevel gear (31) and the rotating column (12) respectively, the spherical cover (28) is arranged on the fixing rod (29), and the fixing rod (29) is arranged on the inner wall of the mounting cylinder (3).

6. The coal mine underground water inrush early warning and monitoring device as claimed in claim 5, wherein a second helical blade (14) is arranged on the inner wall of the mounting cylinder (3), and a spacing channel is arranged between the first helical blade (13) and the second helical blade (14) along the radial direction of the mounting cylinder (3).

7. The coal mine underground water inrush early warning and monitoring device as claimed in any one of claims 1 to 6, further comprising a fixing frame (19), wherein the mounting cover (18) is fixed on the fixing frame (19);

the fixing frame (19) is of a U-shaped structure, the U-shaped opening is arranged downwards, and fixing nails are arranged at the bottoms of the two ends of the fixing frame (19).

8. The coal mine underground water inrush early warning and monitoring device as claimed in claim 7, further comprising a vibration monitoring mechanism, wherein the vibration monitoring mechanism is fixed on the fixing frame (19) and is in contact with the inner wall of the coal mine roadway and used for monitoring vibration of the coal mine roadway;

the vibration monitoring mechanism comprises a fixing plate (20), a vibration sensor (21), a mounting plate (22), a fixing table (23), a screw rod (24), a knob (25) and a guide rod (26), the fixing plate (20) is arranged on the fixing frame (19), the vibration sensor (21) is arranged on the mounting plate (22), the vibration sensor (21) is in communication connection with a central controller (16), the fixing table (23) is connected with the mounting plate (22), one end of the screw rod (24) is rotatably connected with the fixing table (23), the other end of the screw rod (24) is connected with the knob (25), the screw rod (24) penetrates through the fixing plate (20) and is in threaded connection with the fixing plate (20), the guide rod (26) and the screw rod (24) are arranged side by side, the end part of the guide rod (26) is connected with the mounting plate (22), and the guide rod (26) is arranged on the fixing plate (20) in a sliding mode.

9. A coal mine underground water inrush early warning and monitoring method is characterized in that the coal mine underground water inrush early warning and monitoring device as claimed in any one of claims 1 to 8 is used, and the monitoring method comprises the following steps:

the coal mine underground water inrush early warning monitoring device is placed in a drainage ditch of a coal mine roadway, the device is fixed by a fixing frame (19), and a flow guide cover (1) is arranged forwards;

starting a driving mechanism and a water quality sensor (15), wherein the driving mechanism drives the air guide sleeve (1) and the rotating column (12) to rotate; water enters the inner side of the air guide sleeve (1) through the guide groove (101) and the water inlet hole (102) and sequentially passes through the first filter plate (2), the mounting cylinder (3) and the second filter plate (4);

the water quality sensor (15) detects water entering the installation barrel (3), when the water quality sensor (15) detects that substances which permeate into a drainage ditch due to underground water burst are mixed in the water, the water quality sensor (15) sends a signal to the central controller (16), and the central controller (16) controls the audible and visual alarm (17) to give an audible and visual alarm.

10. A mine water inrush disaster monitoring system is characterized by comprising the underground coal mine water inrush early warning and monitoring device according to any one of claims 1 to 8, wherein the underground coal mine water inrush early warning and monitoring device is installed in a drainage ditch;

still include sump water level monitoring devices, sump water level monitoring devices installs in the sump.