CN112253249A - Hydrogeological parameter acquisition system and method for coal mine goaf - Google Patents
Hydrogeological parameter acquisition system and method for coal mine goaf Download PDFInfo
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- CN112253249A CN112253249A CN202011176465.4A CN202011176465A CN112253249A CN 112253249 A CN112253249 A CN 112253249A CN 202011176465 A CN202011176465 A CN 202011176465A CN 112253249 A CN112253249 A CN 112253249A
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- 239000003245 coal Substances 0.000 title claims abstract description 34
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Abstract
A hydrogeological parameter acquisition system and a hydrogeological parameter acquisition method for a coal mine goaf are disclosed. The collecting device is provided with a base, a frame body, an inner sleeve body, an outer sleeve body, a scale cylinder with water level scales, a lighting light-emitting diode, a microspur camera, a plurality of shaftless helical blades, a plurality of groups of water-holding components, a water quality sensor, a temperature sensor, a water pressure sensor and a water level sensor. The shaftless helical blade and the water inlet component enable water flow around the position of the probe of the water pressure sensor, the water quality sensor and the temperature sensor to tend to be in a static state in a short time, and accuracy of measured values is improved. The invention also provides a hydrogeological parameter acquisition method for the coal mine goaf. The device can collect hydrogeological (prospecting) parameters in the goaf, and is convenient to use, simple to operate and accurate in collection result.
Description
Technical Field
The invention relates to a hydrogeological survey parameter acquisition system for a coal mine goaf. The invention also relates to a hydrogeological survey parameter acquisition method for the coal mine goaf.
Background
The coal mine goaf refers to a cavity or cavity left after underground coal or coal gangue is mined in the coal mine operation process. Most of the existing coal mining methods are long-arm mining, roof management is carried out by a caving method, and drilling and geophysical prospecting methods are generally adopted for acquiring hydrogeological (prospecting) parameters such as water quality (including pH value), water level (water depth), temperature and pressure (water pressure) in a goaf, wherein the drilling cost is high, only part of the goaf can be seen, and the geophysical prospecting cost is high and the accuracy is poor.
The inventors searched the following related patent documents: CN111637864A discloses an adopt empty regional monitoring devices, measure the sleeve including a plurality of, the measurement sleeve bottom that is located the outside is sealed, outmost measurement sleeve is equipped with sealed sleeve, it is equipped with annular spout to correspond on sleeve and the sealed sleeve to measure, be equipped with sealed piston in the annular spout, sealed piston, measure the sleeve, sealed sleeve encloses to close and forms and measures the chamber, it is filled with measuring gas to measure the intracavity, the measurement sleeve top of inlayer is sealed, be equipped with flexible baffle assembly in the inlayer measurement sleeve, flexible baffle assembly will measure sleeve internal partitioning to become the intercommunication chamber, every intercommunication chamber and one measure the chamber and pass through communicating pipe intercommunication, there is the monitoring gasbag at intercommunication chamber top through the hose connection. CN109827628A discloses a dynamic monitoring and early warning method and device for water level and water quantity in underground mining areas, the device mainly comprises: the monitoring device comprises a protection component arranged on the periphery of a shell, a cable storage component arranged at the top end of the shell, a circuit board component arranged below the cable storage component, a pressure sensor component arranged at the bottom end of the circuit board component, a temperature sensor component arranged on the inner side of the monitoring device, and an audible and visual alarm arranged in a goaf and close to a monitoring cavity; the pressure sensor component and the temperature sensor component are used for continuously acquiring data, the circuit board component is used for converting water pressure, water temperature and water quantity into water level and water quantity data, and a plurality of data are transmitted to the audible and visual alarm in real time through the cable.
The technologies can be used for acquiring hydrogeological (exploration) parameters in the goaf by the acquisition system, and are convenient to use, simple to operate, accurate in acquisition result and free of specific guidance schemes.
Disclosure of Invention
The invention aims to provide a hydrogeological parameter acquisition system for a coal mine goaf, which can acquire hydrogeological (exploration) parameters in the goaf, and is convenient to use, simple to operate and accurate in acquisition result.
Therefore, the invention also provides a hydrogeological parameter acquisition method for the coal mine goaf.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a coal mine goaf hydrogeological parameter acquisition system is provided with a power adapter, a cable, a data collection device, a computer and an acousto-optic early warning device, wherein the data collection device, the computer and the acousto-optic early warning device are installed on the ground; the frame body is provided with a plurality of (can be six) connecting rods (connecting plates) which are vertically arranged, wherein the upper end plate is round, the upper end plate is transversely arranged, the bottom end plate is round, the bottom end plate is transversely arranged, the upper end plate and the bottom end plate are connected, the frame body is of a frame structure and can be formed by welding steel plates, and the base can be formed by welding steel plates. The outer sleeve body can be processed by a steel plate with the thickness of 0.8-1.5 mm, and the inner sleeve body can be processed by a steel plate with the thickness of 1.2-2.5 mm. The side-mounting of framework has first filter screen (all installs first filter screen between two adjacent connecting rods in the side of framework promptly), and the bottom of framework is dull and stereotyped and base fixed connection (can be the welding), and the base has a plurality of open slots, every along peripheral (following the circumferencial direction promptly) the bottom surface of open slot is the low, the high tilt state in inboard position in outside position, every the second filter screen is installed to the outside end opening part of open slot, with every the through-hole has on the corresponding above-mentioned bottom of department of open slot position, system work back, silt, residue (cinder) in the aquatic in the framework can through the through-hole the open slot is discharged.
An outer sleeve body and an inner sleeve body are arranged in the frame body, the upper end and the lower end of the outer sleeve body are fixedly connected (can be welded) with an upper end flat plate and a bottom end flat plate respectively, the lower end of the inner sleeve body is fixedly connected (can be welded) with a bottom end flat plate, the upper end of the inner sleeve body extends out of the upper end flat plate to form an extending end of the inner sleeve body, the extending end of the inner sleeve body is fixedly connected (can be detached and is convenient for installing a macro camera), and the upper end of the scale cylinder is fixedly connected with a top cover through a plurality of screws; a plurality of shaftless helical blades are uniformly distributed along the circumferential direction in an annular cavity between the outer sleeve body and the outer side surface of the frame body, the rotating directions of two adjacent shaftless helical blades are opposite, a mounting hole (which is convenient for the shaftless helical blade to extend into the annular cavity between the outer sleeve body and the outer side surface of the frame body) is arranged at the position of the upper end flat plate corresponding to each shaftless helical blade, each mounting hole is blocked by a corresponding end cover, each end cover is fixedly connected with the upper end flat plate through a plurality of screws, a lower shaft head arranged at the bottom end of each shaftless helical blade is limited by a positioning hole in the upper end surface of the bottom end flat plate, an upper shaft head arranged at the top end of each shaftless helical blade is limited by the positioning hole on the end cover and is acted by water flow, each shaftless helical blade can wind around the upper shaft head of the shaftless helical blade, the lower shaft head rotates; a plurality of groups of water-holding members are uniformly distributed in the circular ring-shaped cavity between the outer sleeve body and the inner sleeve body along the circumferential direction, each group of water-holding members is provided with a plurality of water-holding bodies, a shaft body penetrating through the center of each water-holding body and fixedly connected (welded) with the water-holding body, and a nut, each water-holding body is in a regular quadrangular frustum shape, and four side surfaces of each regular quadrangular frustum are provided with water-holding grooves; the upper end flat plate is provided with an installation inlet hole (which is convenient for the water trap member to extend into a ring-shaped cavity between the outer sleeve body and the inner sleeve body) at the position corresponding to each group of water trap members, each installation inlet hole is blocked by an end cover body corresponding to the installation inlet hole, each end cover body is fixedly connected with the upper end flat plate through a plurality of screws, the bottom end of each shaft body is limited by a positioning hole in the upper end surface of the bottom end flat plate, the top end of each shaft body is limited by the positioning hole on the end cover body and extends out of the end cover body to form an extending end of the shaft body, and the extending end of the shaft body is locked by a nut; the side wall of the outer sleeve body is provided with a plurality of rows of water through holes which are longitudinally arranged (uniformly distributed) and through which water flows pass, the plurality of rows of water through holes are uniformly distributed along the circumferential direction of the outer sleeve body and the axial direction of the outer sleeve body, the plurality of rows of water through holes correspond to the plurality of shaftless helical blades one by one, the position of each row of water through holes corresponds to one shaftless helical blade, and a group of water collecting components are arranged between two adjacent rows of water through holes; the number of the water pockets in each group of water-collecting members is the same as that of the water through openings in each row, and the height positions of the water pockets in each group of water-collecting members are the same as (corresponding to) the height positions of the water through openings in each row; the water pressure sensor is arranged on the side wall of the inner sleeve body and is positioned on the bottom surface of the upper end flat plate, the water quality sensor and the temperature sensor are arranged on the side wall of the inner sleeve body, the probe of the water pressure sensor, the probe of the water quality sensor and the probe of the temperature sensor extend into the annular cavity between the outer sleeve body and the inner sleeve body, the water level sensor is arranged on the side wall of the scale cylinder and is positioned at the top cover, and the probe of the water level sensor extends out of the scale cylinder.
The inner wall of the scale cylinder is provided with a microspur camera, the inner wall of the top cover of the scale cylinder is provided with a lighting light-emitting diode, the outer surface of the front part of the cable is wrapped by a plastic pipe with a sealing protection function, the front part of the cable and the plastic pipe extend into the scale cylinder and the inner sleeve body from a penetrating hole on the top cover, the front end of the cable is respectively connected with the lighting light-emitting diode, a water level sensor, the microspur camera, a water pressure sensor, a water quality sensor and a temperature sensor, the rear end of the cable is respectively connected with a power adapter, a data collecting device and a computer, a first data line (a first data transmission line) in the cable connects the microspur camera with the computer, a second data line to a fifth data line in the cable connect the water level sensor, the water pressure sensor, the water quality sensor and the temperature sensor with the data collecting device, and the data collecting device is connected with, the computer is connected with the acousto-optic early warning device.
In the above technical solution, a preferable technical solution may be: the base is preferably cylindrical and may be formed by welding steel plates. The number of the plurality of the open grooves is preferably six, two through holes are preferably formed in the bottom end flat plate at positions corresponding to the positions of the open grooves, the two through holes are preferably arranged in a circular ring-shaped cavity between the outer sleeve body and the outer side face of the frame body, and the total number of the through holes is preferably 12. The extending end of the inner sleeve body and the bottom end of the scale cylinder can be connected by a flange. The number of the plurality of shaftless helical blades is preferably six, the number of the plurality of groups of water-holding members is six, the number of the plurality of rows of water-passing openings is six, the number of the water-holding bodies in each group of water-holding members is five, and each row of water-passing openings is provided with five water-passing openings. Each of the pockets preferably has two planar side walls, a planar upper bottom wall, and an arcuate lower bottom wall, the planar upper bottom wall being tangent to the arcuate lower bottom wall. The shafts may be made of round steel, and each of the water pockets may be made of a steel plate.
The acquisition system is used in the acquisition method of the hydrogeological parameters of the coal mine goaf. The method for acquiring hydrogeological parameters of the coal mine goaf comprises the following (process) steps:
the method comprises the following steps: processing a mounting hole B on the coal mine goaf bottom plate A, placing the collecting device in the mounting hole B, enabling the upper end face of an upper end flat plate of a frame body of the collecting device to be level with the upper end face of the coal mine goaf bottom plate A, and enabling the distance L between the outer side face (outer side wall) of the frame body of the collecting device and the inner wall of the mounting hole B to be 35-60 cm.
Step two: water in the goaf enters a circular cavity between the outer sleeve and the outer side face of the frame body from the mounting holes B and meshes of a first filter screen on the side face of the frame body, the rotation directions of two adjacent shaftless spiral blades are opposite, each shaftless spiral blade generates resistance to the water in the circular cavity between the outer sleeve and the outer side face of the frame body, then water flows enter the circular cavity between the outer sleeve and the inner sleeve from a plurality of rows of water through openings on the side wall of the outer sleeve, the position of each row of water through openings corresponds to one shaftless spiral blade, and a group of water inlet components are arranged between two adjacent rows of water through openings; the number of the water pockets in each group of water-holding members is the same as that of the water through holes in each row of water through holes, the height position of each water pocket in each group of water-holding members is the same as that of each row of water through holes, the water-holding grooves in each water pocket partially extract water in the circular ring-shaped cavity between the outer sleeve body and the inner sleeve body, and the water pockets generate resistance to water.
Step three: and the acquisition system is powered on, so that the water quality sensor, the temperature sensor, the water pressure sensor, the water level sensor, the lighting light-emitting diode, the micro-distance camera, the data collection device, the computer and the acousto-optic early warning device are in a normal operation state.
In the invention, water (a part of water flow) in the goaf enters a circular cavity between an outer sleeve and the outer side surface of a frame body from a mounting hole B and meshes of a first filter screen 104 on the side surface of the frame body, the other part of water flow enters the circular cavity between the outer sleeve and the outer side surface of the frame body from second filter screens, each open slot and each through hole, each shaftless helical blade can rotate around an upper shaft head and a lower shaft head of the shaftless helical blade under the action of the water flow, the rotation directions of two adjacent shaftless helical blades are opposite, each shaftless helical blade generates resistance to water in the circular cavity between the outer sleeve and the outer side surface of the frame body, the water flow cannot be intensified, the water flow is gently reduced, then the water flow enters the circular cavity between the outer sleeve and the inner sleeve body from a plurality of rows of water through holes on the side wall of the outer sleeve body, and the position of each row of water through holes corresponds to one shaftless helical blade, a group of water-holding members are arranged between two adjacent rows of water-through openings; the number of the water pockets in each water pocket member is the same as that of the water through holes in each row of the water through holes, the height position of each water pocket in each water pocket member is the same as that of each row of the water through holes, the water pocket groove in each water pocket body extracts a part (a small amount) of water in the circular ring-shaped cavity between the outer sleeve body and the inner sleeve body, and the water pocket body generates resistance to water without intensifying the flow of water flow, thereby playing the role of gently reducing the water speed. Therefore, the shaftless spiral blades and each group of water-collecting components enable water flow around the position of the probe of the water pressure sensor, the position of the probe of the water quality sensor and the position of the probe of the temperature sensor to tend to be in a static state (the water flow is in a stable state) in a short time, the accuracy of the measured values of the water pressure sensor, the water quality sensor and the temperature sensor is improved, and the measurement precision is high; the parameter acquisition efficiency is improved, and the parameter acquisition cost is saved. Through tests, compared with the existing related parameter acquisition system, the shaftless spiral blade and the water-trapping member are arranged, the measurement precision is improved by more than 15%, the measurement precision is higher, the manpower and time for parameter acquisition are saved, the parameter acquisition cost is saved by more than 17%, and the working efficiency during parameter acquisition is improved by more than 20%.
When the water level scale gauge works, the acquisition system is connected with a power supply (the power supply adapter is connected with commercial power), the water quality sensor (comprising a pH sensor), the temperature sensor (water temperature sensor), the water pressure sensor, the water level sensor, the illuminating light emitting diode, the microspur camera, the data collection device, the computer and the acousto-optic early warning device are in a normal running state, and the microspur camera normally displays the water level scale value of the scale cylinder on the screen of the computer. And (3) starting data processing (analyzing) software of the computer, transmitting the detected data of the water quality sensor, the temperature sensor (water temperature sensor) and the water pressure sensor to the computer through a data collecting device and a data transmission line every 2 minutes, and storing the data in time by the data processing software if the parameter acquisition result (monitoring result) is normal. If the water level in the goaf reaches the dangerous height at the moment, namely the top of the standard reaching ruler barrel is reached, the water level sensor detects the water level height, the computer sends out an early warning prompt, and the acousto-optic early warning device is started, and data processing software of the computer stores the data and displays a dangerous water level prompt. The invention can synchronously (real-time) obtain important parameters in hydrogeological investigation aspects such as water quality (including pH value), water level (water depth), temperature, pressure (water pressure) and the like in the goaf.
In conclusion, the invention provides a hydrogeological parameter acquisition system and a hydrogeological parameter acquisition method for a coal mine goaf, which can acquire hydrogeological (exploration) parameters in the goaf, and are convenient to use, simple to operate and accurate in acquisition result.
Drawings
Fig. 1 is a schematic structural view (perspective view) of the present invention in use.
Fig. 2 is a schematic structural view (perspective view) of the collecting device according to the present invention.
Fig. 3 is a cross-sectional view taken along line C-C of fig. 2.
Fig. 4 is a cross-sectional view taken along line D-D of fig. 2.
Fig. 5 is a cross-sectional view taken along line E-E of fig. 3.
Fig. 6 is a schematic structural view (perspective view) of a group of water inlet members according to the present invention.
FIG. 7 is a schematic view showing a structure of a sump for containing water according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the embodiments. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the present embodiment, belong to the protection scope of the present invention.
Example 1: as shown in fig. 1, 2, 3, 4, 5, 6 and 7, in a first embodiment, the hydrogeological parameter acquisition system of a coal mine goaf of the invention comprises a power adapter 7, a cable 3, a data acquisition device (sensor data acquisition device) 4 installed on the ground, a (micro) computer 5, an acousto-optic early warning device 6, and an acquisition device arranged in a mounting hole B on a floor a of the coal mine goaf. The collecting device comprises a base 8, a cylindrical frame 1, a ring-shaped inner sleeve 18, a ring-shaped outer sleeve 14 positioned outside the inner sleeve, a scale cylinder 2 made of transparent materials (organic glass can be used), and provided with water level scales 205, an illuminating light-emitting diode 16, a microspur camera 17, a plurality of (a plurality of) shaftless helical blades 15, a plurality of water inlet components 13, a water quality sensor (pH sensor) 20, a temperature sensor (water temperature sensor) 21, a water pressure sensor 19 and a water level sensor 204. Above-mentioned framework 1 has the circular shape and is the flat board 101 of the upper end that transversely sets up, the circular shape is the flat board 102 of the bottom that transversely sets up, connects a plurality of (can be six) of the flat board of upper end and bottom and is the connecting rod (connecting plate) 103 of vertical setting, and the framework is frame construction, can be formed by the steel sheet welding, and base 8 can be formed by the steel sheet welding. The outer sleeve 14 may be formed by a steel plate with a thickness of 0.8-1.5 mm, and the inner sleeve 18 may be formed by a steel plate with a thickness of 1.2-2.5 mm. The side-mounting of framework 1 has first filter screen (all installs first filter screen between two adjacent connecting rods in side of framework promptly) 104, the dull and stereotyped 102 of bottom and the base 8 fixed connection (can be the welding) of framework, and base 8 has a plurality of open slots 801, every along the periphery (along circumferencial direction promptly) the bottom surface of open slot 801 is the low, high tilt state in inboard position in outside position, every second filter screen 802 is installed to the outside end opening part of open slot, with every through-hole 105 has on the dull and stereotyped 102 of the corresponding department in open slot 801 position, system work back, silt, residue (cinder) in the aquatic can pass through-hole 105 in the framework 1 open slot 801 discharges.
As shown in fig. 1, 2, 3, 4, 5, 6, and 7, an outer sleeve 14 and an inner sleeve 18 are disposed in the frame 1, the upper end and the lower end of the outer sleeve 14 are respectively fixedly connected (may be welded) to the upper end plate 101 and the bottom end plate 102, the lower end of the inner sleeve 18 is fixedly connected (may be welded) to the bottom end plate 102, the upper end of the inner sleeve 18 extends from the upper end plate 101 to form an extending end of the inner sleeve, the extending end of the inner sleeve is fixedly connected (detachably, so as to facilitate installation of a macro camera) to the bottom end of the scale cylinder 2, and the upper end of the scale cylinder 2 is fixedly connected to the top cover 203 by a plurality of screws. A plurality of shaftless helical blades 15 are uniformly distributed in the annular cavity between the outer sleeve 14 and the outer side surface of the frame body 1 along the circumferential direction, the rotating directions of two adjacent shaftless helical blades are opposite, and each shaftless helical blade can be formed by processing a thin steel plate (thin steel plate) with the thickness of 0.3-0.5 mm. The upper end flat plate 101 is provided with a mounting hole (which is convenient for the shaftless helical blade to extend into the annular cavity between the outer casing and the outer side surface of the frame body) at the position corresponding to each shaftless helical blade, each mounting hole is blocked by a corresponding end cover 9, each end cover 9 is fixedly connected with the upper end flat plate 101 through a plurality of screws, a lower shaft head 10' arranged at the bottom end of each shaftless helical blade 15 is limited by a positioning hole in the upper end surface of the bottom end flat plate 102, and an upper shaft head 10 arranged at the top end of each shaftless helical blade 15 is limited by a positioning hole on the end cover 9. Under the action of water flow, each shaftless helical blade can rotate around the upper shaft head 10 and the lower shaft head 10' of the shaftless helical blade, a plurality of groups of water-trapping members 13 uniformly distributed along the circumferential direction are arranged in a circular cavity between the outer sleeve 14 and the inner sleeve 18, and each group of water-trapping members 13 is provided with a plurality of water-trapping bodies 1301, a shaft body 1302 penetrating through the center of each water-trapping body and fixedly connected (welded) with the water-trapping body and a nut 12. Every pocket water body 1301 all is positive four-edge table shape, and four sides of positive four-edge table all have water pocket groove 1303. The upper end plate 101 is provided with an installation hole (for the water-trap member to extend into the annular cavity between the outer sleeve and the inner sleeve) at a position corresponding to each group of water-trap members, each installation hole is blocked by a corresponding end cover 11, each end cover 11 is fixedly connected with the upper end plate 101 through a plurality of screws, the bottom end of each shaft body 1302 is limited by a positioning hole in the upper end surface of the bottom end plate 102, the top end of each shaft body 1302 is limited by the positioning hole on the end cover 11 and extends out of the end cover to form an extending end of the shaft body, and the extending end of the shaft body is locked by a nut 12. The nut 12 is loosened, the shaft body 1302 can be rotated, and the relative position of the water bag body 1301 in the annular cavity between the outer sleeve body and the inner sleeve body is adjusted, so that the resistance of the water bag body to water flow is changed, and the water bag body is adaptive to the water flow speed.
As shown in fig. 1, 2, 3, 4, 5, 6 and 7, the side wall of the outer casing 14 has a plurality of rows of water openings 1401 which are longitudinally arranged (uniformly distributed) and through which water flows, the plurality of rows of water openings 1401 are uniformly distributed along the circumferential direction of the outer casing and the axial direction of the outer casing, the plurality of rows of water openings 1401 correspond to the plurality of shaftless helical blades 15 one by one, each row of water openings 1401 is located at a position corresponding to one shaftless helical blade 15, and a group of water inlet members 13 is arranged between two adjacent rows of water openings 1401. The number of the water passing ports 1301 in each group of the water absorbing members 13 is the same as that of the water passing ports 1401 in each row, and the height positions of the water absorbing members 1301 in each group of the water absorbing members 13 are the same as (corresponding to) the height positions of the water passing ports 1401 in each row. The water pressure sensor 19 is arranged on the side wall of the inner sleeve body 18 and is positioned at the bottom surface of the upper end flat plate 101, the water quality sensor 20 and the temperature sensor 21 are arranged on the side wall of the inner sleeve body 18, the probe of the water pressure sensor 19, the probe of the water quality sensor 20 and the probe of the temperature sensor 21 extend into the annular cavity between the outer sleeve body and the inner sleeve body, the water level sensor 204 is arranged on the side wall of the scale drum 2 and is positioned at the top cover 203, and the probe of the water level sensor 204 extends out of the scale drum. The inner wall of the scale cylinder 2 is provided with a microspur camera 17, the inner wall of the top cover 203 of the scale cylinder is provided with a lighting light-emitting diode 16, the outside of the front part of the cable 3 is wrapped by a plastic pipe 202 with sealing protection function, the front part of the cable 3 and the plastic pipe extend into the scale cylinder 2 and the inner sleeve 18 from a penetrating hole on the top cover 203, and the front end of the cable 3 is respectively connected with the lighting light-emitting diode 16, a water level sensor 204, the microspur camera 17, a water pressure sensor 19, a water quality sensor 20 and a temperature sensor 21. The rear end of the cable 3 is respectively connected with the power adapter 7, the data collecting device 4 and the computer 5, and the specific connection mode can be that the first wire, the second wire, the third wire, the fourth wire, the fifth wire and the sixth wire in the cable 3 respectively connect the power adapter 7 with the light-emitting diode 16, the macro camera 17, the water level sensor 204, the water pressure sensor 19, the water quality sensor 20 and the temperature sensor 21 are connected, the micro camera 17 is connected with the computer 5 through a first data line (a first data transmission line) in the cable 3, the water level sensor, the water pressure sensor, the water quality sensor and the temperature sensor are connected with the data collection device 4 through a second data line to a fifth data line in the cable 3, the data collection device 4 is connected with the computer 5 through the data transmission line, and the computer 5 is connected with the acousto-optic early warning device 6. The data collection device and the computer are powered by a power supply or a power adapter.
As shown in fig. 1, 2, 3, 4, 5, 6, and 7, the base 8 has a cylindrical shape and may be formed by welding steel plates. The number of the plurality of opening grooves 801 is six, two through holes 105 are formed in the bottom end plate 102 at positions corresponding to the positions of each opening groove 801, the two through holes are located in a circular ring-shaped cavity between the outer casing 14 and the outer side surface of the frame body 1, and the total number of the through holes 105 is 12. The extending end of the inner sleeve body is connected with the bottom flange of the scale cylinder 2. The number of the plurality of shaftless helical blades 15 is six, the number of the plurality of sets of water inlet members 13 is six, the number of the plurality of rows of water passage openings 1401 is six, the number of the water inlet bodies 1301 in each set of water inlet members 13 is five, and each row of water passage openings 1401 has five water passage openings. Each water pocket groove 1303 is provided with two planar side walls 1303a, a planar upper bottom wall 1303b and an arc-shaped lower bottom wall 1303c, the planar upper bottom wall is tangent to the arc-shaped lower bottom wall, and the water pocket body and the water pocket groove adopt the structure so that water flow can tend to be in a static state in a short time. The shafts 1302 may be made of round steel, and each of the water-receiving bodies may be made of steel plate.
Example 2: as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7, in a second embodiment, the acquisition system of embodiment 1 is used in the method for acquiring hydrogeological parameters of a coal mine goaf. The method for acquiring hydrogeological parameters of the coal mine goaf comprises the following steps:
the method comprises the following steps: processing a mounting hole B on the coal mine goaf bottom plate A, placing the collecting device in the mounting hole B, making the upper end surface of an upper end flat plate 101 of a frame body 1 of the collecting device be level with the upper end surface of the coal mine goaf bottom plate A, and making the distance L between the outer side surface (outer side wall) of the frame body 1 of the collecting device and the inner wall of the mounting hole B be 35-60 cm (the distance L is 50 cm).
Step two: water in the goaf enters a circular cavity between the outer sleeve 14 and the outer side surface of the frame body 1 from the mounting holes B and meshes of the first filter screen 104 on the side surface of the frame body, the rotation directions of two adjacent shaftless spiral blades 15 are opposite, each shaftless spiral blade generates resistance to the water in the circular cavity between the outer sleeve 14 and the outer side surface of the frame body 1, then water flows enter the circular cavity between the outer sleeve 14 and the inner sleeve 18 from a plurality of rows of water through holes 1401 on the side wall of the outer sleeve 14, each row of water through holes 1401 is positioned corresponding to one shaftless spiral blade 15, and a group of water inlet members 13 is arranged between two adjacent rows of water through holes 1401; the number of the water inlets 1301 in each group of the water inlet members 13 is the same as that of the water inlets 1401 in each row, the height position of each water inlet 1301 in each group of the water inlet members 13 is the same as that of each row of the water inlets 1401, the water groove 1303 on each water inlet 1301 extracts a part of water in the circular hollow cavity between the outer sleeve 14 and the inner sleeve 18, and the water inlet 1301 generates resistance to water.
Step three: and the acquisition system is powered on, so that the water quality sensor 20, the temperature sensor 21, the water pressure sensor 19, the water level sensor 204, the illumination light-emitting diode 16, the macro camera 17, the data collection device 4, the computer 5 and the acousto-optic early warning device 6 are in a normal operation state.
In the invention, water (a part of water flow) in the goaf enters a circular cavity between the outer sleeve 14 and the outer side surface of the frame body 1 from the mounting holes B and the meshes of the first filter screen 104 on the side surface of the frame body, the other part of water flow enters the circular cavity between the outer sleeve 14 and the outer side surface of the frame body 1 from the second filter screens 802, each open slot 801 and each through hole 105, each shaftless helical blade is acted by the water flow and can rotate around the upper shaft head 10 and the lower shaft head 10' of the shaftless helical blade, the rotation directions of the two adjacent shaftless helical blades are opposite, each shaftless helical blade generates resistance to the water in the circular cavity between the outer sleeve 14 and the outer side surface of the frame body 1, the water flow cannot be intensified, the water flow is gently reduced, and then the water flow enters the circular cavity between the outer sleeve 14 and the inner sleeve 18 from a plurality of rows of water openings 1401 on the side wall of the outer sleeve 14, each row of the water through openings 1401 is positioned at a position corresponding to one shaftless helical blade 15, and a group of water inlet components 13 are arranged between two adjacent rows of the water through openings 1401. The quantity of the water inlets 1301 in each group of the water inlet members 13 is the same as that of the water inlets 1401 in each row, the height position of each water inlet 1301 in each group of the water inlet members 13 is the same as that of each row of the water inlets 1401, the water trough 1303 on each water inlet member 1301 extracts a part (small quantity) of water in the circular hollow cavity between the outer sleeve body 14 and the inner sleeve body 18, and the water inlet members 1301 generate resistance to water without aggravating water flow, so that the water inlet members smoothly reduce the water speed. Thus, each shaftless helical blade 15 and each group of water inlet components 13 of the invention enable the water flow around the probe of the water pressure sensor 19, the probe of the water quality sensor 20 and the probe of the temperature sensor 21 to be in a static state (the water flow is in a stable state) in a short time (more than 20% of time can be saved), the accuracy of the measured values of the water pressure sensor 19, the water quality sensor 20 and the temperature sensor 21 is improved, and the measurement precision is high; the parameter acquisition efficiency is improved, and the parameter acquisition cost is saved. Through tests, compared with the existing related parameter acquisition system, the shaftless spiral blade and the water-trapping member are arranged, the measurement precision is improved by more than 15%, the measurement precision is higher, the manpower and time for parameter acquisition are saved, the parameter acquisition cost is saved by more than 17%, and the working efficiency during parameter acquisition is improved by more than 20%.
When the water level scale gauge works, the acquisition system is connected with a power supply (the power supply adapter is connected with commercial power), the water quality sensor (comprising a pH sensor) 20, the temperature sensor (water temperature sensor) 21, the water pressure sensor 19, the water level sensor 204, the illuminating light-emitting diode 16, the microspur camera 17, the data collection device 4, the computer 5 and the acousto-optic early warning device 6 are in a normal running state, and the microspur camera normally displays the water level scale value of the scale cylinder 2 on the screen of the computer. And (3) starting data processing (analyzing) software of the computer, transmitting the detected data of the water quality sensor 20, the temperature sensor 21 and the water pressure sensor 19 to the computer 5 through the data collecting device 4 and the data transmission line every 2 minutes, and storing the data in time by the data processing software if the parameter acquisition result (monitoring result) is normal. If the water level in the goaf reaches a dangerous height at the moment, namely the water level reaches the top end of the scale drum 2, the water level sensor 204 detects the water level height, the computer sends out an early warning prompt, the acousto-optic early warning device is started, and data processing software of the computer stores the data and displays a dangerous water level prompt. The invention can synchronously (real-time) obtain important parameters in hydrogeological investigation aspects such as water quality (including pH value), water level (water depth), temperature, pressure (water pressure) and the like in the goaf.
In summary, the above embodiments of the present invention provide a hydrogeological parameter acquisition system and method for a coal mine goaf, which can acquire hydrogeological (exploration) parameters in a goaf, and is convenient to use, simple to operate, and accurate in acquisition result.
Claims (7)
1. The utility model provides a colliery goaf hydrogeological parameter collection system, has power adapter (7), cable (3), installs in subaerial data collection device (4), computer (5), reputation early warning device (6), its characterized in that colliery goaf hydrogeological parameter collection system still have the collection system who sets up in the mounting hole B on coal mine goaf bottom plate A, collection system has base (8), is cylindrical framework (1), is the inner cover body (18) of ring bodily form, is located the outer cover body (14) of ring bodily form that is outside the inner cover body, the scale section of thick bamboo (2) of taking the water level scale of being made by transparent material, illumination emitting diode (16), microspur camera (17), a plurality of shaftless helical blade (15), multiunit water pocket component (13), quality of water sensor (20), temperature sensor (21), A water pressure sensor (19) and a water level sensor (204);
the frame body (1) is provided with a circular upper end flat plate (101) which is transversely arranged, a circular bottom end flat plate (102) which is transversely arranged, and a plurality of connecting rods (103) which are longitudinally arranged and are used for connecting the upper end flat plate and the bottom end flat plate, a first filter screen (104) is installed on the side surface of the frame body (1), the bottom end flat plate (102) of the frame body is fixedly connected with a base (8), the base (8) is provided with a plurality of open grooves (801) along the periphery, the bottom surface of each open groove (801) is in an inclined state with a low outer side position and a high inner side position, a second filter screen (802) is installed at an opening of the outer side end of each open groove, and a through hole (105) is formed in the bottom end flat plate (102);
an outer sleeve body (14) and an inner sleeve body (18) are arranged in the frame body (1), the upper end and the lower end of the outer sleeve body (14) are fixedly connected with an upper end flat plate (101) and a bottom end flat plate (102) respectively, the lower end of the inner sleeve body (18) is fixedly connected with the bottom end flat plate (102), the upper end of the inner sleeve body (18) extends out of the upper end flat plate (101) to form an extending end of the inner sleeve body, the extending end of the inner sleeve body is fixedly connected with the bottom end of the scale drum (2), and the upper end of the scale drum (2) is fixedly connected with the top cover (203) through a plurality of screws; a plurality of shaftless spiral blades (15) are uniformly distributed in the circumferential direction in an annular cavity between the outer sleeve (14) and the outer side surface of the frame body (1), the rotating directions of two adjacent shaftless spiral blades are opposite, an upper end flat plate (101) is provided with a mounting hole at the position corresponding to each shaftless spiral blade, each mounting hole is blocked by a corresponding end cover (9), each end cover (9) is fixedly connected with the upper end flat plate (101) through a plurality of screws, a lower shaft head (10') arranged at the bottom end of each shaftless spiral blade (15) is limited by a positioning hole in the upper end surface of the bottom end flat plate (102), and an upper shaft head (10) arranged at the top end of each shaftless spiral blade (15) is limited by a positioning hole in the end cover (9); a plurality of groups of water inlet components (13) are uniformly distributed in the circular ring-shaped cavity between the outer sleeve body (14) and the inner sleeve body (18) along the circumferential direction, each group of water inlet components (13) is provided with a plurality of water inlet bodies (1301), a shaft body (1302) penetrating through the center of each water inlet body and fixedly connected with the water inlet body, and a nut (12), each water inlet body (1301) is in a regular quadrangular frustum shape, and water inlet grooves (1303) are arranged on four sides of the regular quadrangular frustum; the upper end flat plate (101) is provided with an installation inlet hole at the position corresponding to each group of water inlet components, each installation inlet hole is blocked by a corresponding end cover body (11), each end cover body (11) is fixedly connected with the upper end flat plate (101) through a plurality of screws, the bottom end of each shaft body (1302) is limited by a positioning hole in the upper end surface of the bottom end flat plate (102), the top end of each shaft body (1302) is limited by the positioning hole on the end cover body (11) and extends out of the end cover body to form an extending end of the shaft body, and the extending end of the shaft body is locked by a nut (12);
the side wall of the outer sleeve body (14) is provided with a plurality of rows of water through openings (1401) which are longitudinally arranged and through which water flows pass, the plurality of rows of water through openings (1401) are uniformly distributed along the circumferential direction of the outer sleeve body, the plurality of rows of water through openings (1401) correspond to the plurality of shaftless spiral blades (15) one by one, the position of each row of water through openings (1401) corresponds to one shaftless spiral blade (15), and a group of water inlet components (13) are arranged between two adjacent rows of water through openings (1401); the number of the water inlets (1301) in each group of water inlet components (13) is the same as that of the water inlets (1401) in each row, and the height position of each water inlet (1301) in each group of water inlet components (13) is the same as that of each water inlet (1401) in each row;
the water pressure sensor (19) is arranged on the side wall of the inner sleeve body (18) and is positioned at the bottom surface of the upper end flat plate (101), the water quality sensor (20) and the temperature sensor (21) are arranged on the side wall of the inner sleeve body (18), the probe of the water pressure sensor (19), the probe of the water quality sensor (20) and the probe of the temperature sensor (21) extend into an annular cavity between the outer sleeve body and the inner sleeve body, the water level sensor (204) is arranged on the side wall of the scale drum (2) and is positioned at the top cover (203), and the probe of the water level sensor (204) extends out of the scale drum;
the inner wall of the scale cylinder (2) is provided with a microspur camera (17), the inner wall of a top cover (203) of the scale cylinder is provided with a lighting light-emitting diode (16), the outside of the front part of the cable (3) is wrapped by a plastic pipe (202) playing a role of sealing protection, the front part of the cable (3) and the plastic pipe extend into the scale cylinder (2) and the inner sleeve body (18) from a penetrating hole on the top cover (203), the front end of the cable (3) is respectively connected with the lighting light-emitting diode (16), a water level sensor (204), the microspur camera (17), a water pressure sensor (19), a water quality sensor (20) and a temperature sensor (21), the rear end of the cable (3) is respectively connected with a power adapter (7), a data collecting device (4) and a computer (5), a first data wire in the cable (3) connects the microspur camera (17) with the computer (5), a water level sensor, a water pressure sensor, a water quality sensor and a temperature sensor are connected with a data collecting device (4) through a second data line to a fifth data line in the cable (3), the data collecting device (4) is connected with a computer (5) through a data transmission line, and the computer (5) is connected with an acousto-optic early warning device (6).
2. The hydrogeological parameter acquisition system as recited in claim 1, wherein said base (8) is cylindrical.
3. The system for acquiring hydrogeological parameters of a coal mine goaf according to claim 1, characterized in that the number of the plurality of open slots (801) is six, and two through holes (105) are arranged on the bottom end plate (102) corresponding to the positions of each open slot (801), and the two through holes are arranged in a circular ring-shaped cavity between the outer casing (14) and the outer side surface of the frame body (1).
4. The hydrogeological parameter acquisition system of the coal mine goaf according to claim 1, characterized in that the protruding end of the inner sleeve body is connected with the bottom flange of the scale drum (2).
5. The coal mine goaf hydrogeological parameter collection system according to claim 1, characterized in that the number of the plurality of shaftless helical blades (15) is six, the number of the plurality of groups of water inlet members (13) is six, the number of the plurality of rows of water openings (1401) is six, the number of the water inlet bodies (1301) in each group of water inlet members (13) is five, and each row of water openings (1401) has five water openings.
6. The coal mine goaf hydrogeological parameter acquisition system as recited in claim 1, characterized in that each said gutter (1303) has two planar side walls (1303 a), a planar upper bottom wall (1303 b), and a cambered lower bottom wall (1303 c), the planar upper bottom wall being tangent to the cambered lower bottom wall.
7. A method of using the acquisition system of claim 1 to acquire hydrogeological parameters of a coal mine goaf, comprising the steps of:
the method comprises the following steps: processing a mounting hole B on the coal mine goaf bottom plate A, placing an acquisition device in the mounting hole B, and enabling the upper end surface of an upper end flat plate (101) of a frame body (1) of the acquisition device to be level with the upper end surface of the coal mine goaf bottom plate A, so that the distance L between the outer side surface of the frame body (1) of the acquisition device and the inner wall of the mounting hole B is 35-60 cm;
step two: enabling water in the goaf to enter a circular cavity between an outer sleeve (14) and the outer side face of a frame body (1) from a mounting hole B and meshes of a first filter screen (104) on the side face of the frame body, enabling the rotation directions of two adjacent shaftless spiral blades (15) to be opposite, enabling each shaftless spiral blade to generate resistance on the water in the circular cavity between the outer sleeve (14) and the outer side face of the frame body (1), enabling water flow to enter the circular cavity between the outer sleeve (14) and an inner sleeve (18) from multiple rows of water through holes (1401) in the side wall of the outer sleeve (14), enabling the position of each row of water through holes (1401) to correspond to one shaftless spiral blade (15), and enabling a group of water inlet components (13) to be arranged between two adjacent rows of water through holes (1401); the number of the water inlets (1301) in each group of water inlet components (13) is the same as that of the water inlets in each row of water inlets (1401), the height position of each water inlet (1301) in each group of water inlet components (13) is the same as that of each row of water inlets (1401), a water inlet groove (1303) in each water inlet (1301) extracts a part of water in a circular cavity between the outer sleeve body (14) and the inner sleeve body (18), and the water inlet bodies (1301) generate resistance to water;
step three: and the acquisition system is powered on, so that the water quality sensor (20), the temperature sensor (21), the water pressure sensor (19), the water level sensor (204), the lighting light-emitting diode (16), the macro camera (17), the data collection device (4), the computer (5) and the acousto-optic early warning device (6) are in a normal operation state.
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