CN112798037B - Grid type rock mass stress and vibration monitoring device based on pipe seam type anchor rod, auxiliary installation device and installation and use method - Google Patents
Grid type rock mass stress and vibration monitoring device based on pipe seam type anchor rod, auxiliary installation device and installation and use method Download PDFInfo
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- CN112798037B CN112798037B CN202011149993.0A CN202011149993A CN112798037B CN 112798037 B CN112798037 B CN 112798037B CN 202011149993 A CN202011149993 A CN 202011149993A CN 112798037 B CN112798037 B CN 112798037B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/16—Elements for restraining, or preventing the movement of, parts, e.g. for zeroising
- G01D11/18—Springs
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/30—Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
Abstract
The invention relates to a tube seam type anchor rod-based grid rock mass stress and vibration monitoring device, an auxiliary mounting device and a mounting and using method. The invention can more accurately and widely sense the micro strain generated by the rock mass by adopting the grid multi-point monitoring, increases the overall accuracy of the monitoring equipment, establishes the grid model of the monitoring drilling hole by depending on the obtained multi-point strain data, can intuitively observe the micro deformation of the rock mass, can judge the working condition of the strain sensor of each point, and greatly increases the visualization degree of the monitoring data.
Description
Technical Field
The invention belongs to the field of mine safety monitoring, and relates to a latticed rock mass stress and vibration monitoring device based on a pipe seam type anchor rod, an auxiliary mounting device and a mounting and using method.
Background
Mineral resources play an important role throughout the development of national economy. However, in the mining process of mineral resources, due to the fact that the stress state inside the rock stratum cannot be accurately grasped in time, mine disaster accidents caused by the phenomenon of earth pressure display are endless, particularly rock burst, mineral earthquake and other accidents, huge personnel and property losses are caused to enterprises, particularly in recent years, with the exhaustion of shallow mineral resources, deep mining and ocean resource mining become more normative, and the phenomenon of earth pressure display faced at that time is more severe. Therefore, the deformation of the rock must be effectively monitored to accurately and timely grasp the stress state of the rock. Through the development of many years, rock mass strain monitoring and microseism monitoring become one of the effective means of monitoring rock mass stability state in the geotechnical engineering field, produced some monitoring facilities and device, include: the patent CN110673205A is a micro-vibration sensor taking and placing device with a strain gauge pasting structure; patent CN209324331U is a device for mounting strain gauges on the inner wall of a drill rod; the patent CN206818160U is a fiber grating aperture deformation sensor for measuring surrounding rock stress for a long time. Although the research and development results can realize monitoring of rock stress, the following problems generally exist: (1) the system has single function, can only monitor the rock stress or vibration, and is not beneficial to controlling the mine operation cost; (2) the monitoring of single parameters can be realized, the one-sidedness is realized, and the complex state of the rock mass cannot be comprehensively and accurately reflected; (3) the intelligent integration degree of information is poor, and a great deal of time and energy are needed to be spent on data processing work. In view of the above, there is a need to develop an intelligent monitoring device with high precision, intelligence, multi-parameter, and multi-directional simultaneous acquisition functions and superior support performance.
Disclosure of Invention
The invention provides a latticed rock stress and vibration monitoring device based on a pipe seam type anchor rod, an auxiliary mounting device and a mounting and using method. The device aims to overcome the defects that the existing rock mass monitoring equipment or the supporting device has single function, cannot acquire multi-parameter data simultaneously, and has low intelligent degree and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a grid formula rock mass stress and vibration monitoring devices based on tube slot formula stock, a serial communication port, including the tube slot formula stock body of rod, the integrated grid of strain and vibration inductor, silica gel overcoat, fixed tray, information intelligence integrated device, wired transmission unit, strain and the integrated grid of vibration inductor comprise a plurality of high accuracy strain inductor and two vibration inductors, and the grid main part is from last strain inductor to even symmetric distribution down, and two vibration inductors set up at drilling drill way symmetric position, are formed by the connection of wired transmission unit between the inductor, fixed tray installs in tube slot formula stock bottom and rock wall contact department, and it has the aperture to open on the tray for consolidate the country rock, also regard as fixed and the carrier of placing information intelligence integrated device simultaneously.
Furthermore, the intelligent information integration device is connected with the strain and vibration sensor integration grid through a wired transmission unit and used for collecting signals transmitted by the strain and vibration sensor integration grid and analyzing and processing the signals, and a high-capacity battery is arranged in the intelligent information integration device to supply power for the intelligent information integration device and the monitoring component so as to ensure continuous work of the intelligent information integration device.
Furthermore, the silica gel outer sleeve is attached to the surface of the strain and vibration sensor integrated grating, and plays a role in water resistance and dust prevention.
An auxiliary installation device for installing a strain and vibration sensor integrated grid to a pipe seam type anchor rod which is drilled into a drilled hole is characterized in that the auxiliary installation device comprises a grid supporting body, a movable supporting rod, a sleeve, a central rod, a fastening bolt, a device fixing body, an L-shaped semi-hollow cylinder, a spring, a sleeve baffle and a threaded knob, the grid supporting body is used as an installation carrier of the strain and vibration sensor integrated grid and consists of two symmetrical hollow semi-cylinders, the device fixing body consists of two cylindrical parts positioned at the upper end and the lower end of the grid supporting body, one ends of the four L-shaped semi-hollow cylinders positioned at the upper end and the lower end of the auxiliary installation device are connected with the device fixing body, the other end is connected with the grating supporting body through a spring, wherein a cylindrical threaded hole is formed in the center of the lower surface of the device fixing body at the upper end, the depth of the threaded hole is smaller than that of the device fixing body, the diameter of the threaded hole is the same as that of the central rod and is matched with the thread at the upper end of the central rod, a cylindrical through hole with the diameter slightly larger than that of the central rod is formed in the center of the device fixing body at the lower end and is not fixedly connected with the central rod, the central rod penetrates through the device fixing body, a threaded knob is arranged at one end of the central rod, a sleeve is arranged on the central rod, the inner diameter of the sleeve is slightly larger than that of the central rod, sleeve baffles taking the central rod as a shaft are fixed on the central rod and are arranged at the upper end and the lower end of the sleeve and consist of cylindrical components with small thickness and can move up and down along with the rotation of the central rod and push the sleeve to move up and down with the central rod as a shaft, the side surface of the sleeve is provided with four symmetrically distributed cylindrical grooves, a fixed support is arranged at the central position of each groove, a through hole is formed in each fixed support, one end of each movable support rod is fixed on the grating bearing body, the end part of the other end of each movable support rod is provided with a groove, and round holes with the same diameter as the diameter of the through hole in each fixed support are formed in the two sides of each groove so as to be connected with the fixed supports on the sleeve through fastening bolts.
Furthermore, the side surface of the device fixing body at the lower end is provided with two cuboid grooves, and the length of each groove is the same as the thickness of the device fixing body, so that cables can conveniently pass through the grooves when the strain and vibration sensor integrated grids are installed.
Furthermore, each L-shaped semi-hollow cylinder comprises a vertical part and a horizontal part, the vertical part perpendicular to the device fixing body is a solid cylinder, the horizontal part perpendicular to the grid supporting body is a hollow circular tube, a spring is placed inside the hollow circular tube, the diameter of each spring is slightly smaller than the inner diameter of the hollow circular tube, one end of each spring is connected with the circular tube, the other end of each spring is connected with the grid supporting body, and the length of one end, connected with the grid supporting body, of each spring exposed outside the circular tube is shorter, so that the springs can only extend along the radial direction.
The utility model provides an installation application method of grid formula rock mass stress and vibration monitoring devices based on tube seam formula stock, which characterized in that mainly includes several following steps:
step 1: and drilling the required diameter and depth drill holes according to the actual conditions and requirements of the mine by using the rock drilling machine according to a reasonable distance.
Step 2: utilize stock grinding device to carry out burnishing and polishing to seam formula stock inner wall to make when carrying out the installation of the integrated grid of strain and vibration inductor, more be favorable to the inseparable laminating of grid and stock inner wall.
And step 3: and linkage debugging and calibration before field installation of the strain and vibration sensor integrated grating and the information intelligent integrated device are carried out, so that the normal operation of the whole signal receiving device is ensured.
And 4, step 4: cleaning the drilled hole, installing the pipe seam type anchor rod into the drilled hole which is drilled in advance and cleaned, installing a tray, and then placing the resin cartridge at the bottom of the pipe seam type anchor rod.
And 5: the normally debugged strain and vibration sensor integrated grating is smoothly attached to the silica gel jacket, the whole silica gel jacket is placed on a grating supporting body of the auxiliary mounting device, the surface of the strain and vibration sensor integrated grating is uniformly coated with the super glue, and the grating and the silica gel jacket are ensured to be coated with the super glue.
Step 6: the auxiliary installation device is placed into the pipe seam type anchor rod slowly and then pushed into the bottom of the drill hole slowly, the auxiliary installation device is in contact with and breaks through a resin cartridge placed at the bottom of the drill hole in advance, the resin cartridge is solidified after the auxiliary installation device is stopped for a period of time, and the device fixing body of the auxiliary installation device, which is located at the bottom of the drill hole, is fixed at the bottom of the drill hole.
And 7: rotate the screw thread knob, make the screw thread knob drive well core rod and rotate, well core rod upper end screw thread cooperatees with the screw hole, drive well core rod to the motion of drilling bottom, the sleeve baffle of fixing on well core rod this moment is to drilling bottom rotary motion simultaneously, promote the sleeve and remove to the drilling bottom, because movable stay bar fixes on the grid supporting body, movable stay bar then can use fastening bolt to take place to rotate this moment, drive the grid supporting body and expand to both sides, and finally contact with tube seam formula stock inner wall, accomplish the installation work of grid and silica gel overcoat. The auxiliary installation device can be taken out through reverse rotation for secondary installation and use, or directly left inside the pipe seam type anchor rod to serve as a protection device to strengthen the grid.
And 8: the cable that comes out from the inside of tube slot formula stock inserts information intelligence integrated device to with information intelligence integrated device installation fixed to on the tray.
And step 9: the information intelligent integrated device is connected to a computer on the ground through a wireless network to perform normal monitoring work and subsequent data analysis and processing work.
Advantageous effects
Compared with the prior art, the invention has the following beneficial effects:
(1) adopt the overall arrangement mode of the strain of grid formula and vibration inductor, divide into a plurality of small-size modules with the drilling inner wall, can be more accurate, the small strain that more extensive perception rock mass takes place has increased the holistic accuracy nature of monitoring facilities.
(2) The pipe seam type anchor rod is used as a carrier for installing the strain and vibration sensor integrated grating, excellent supporting performance of end anchoring and full-length anchoring is achieved, the whole body of the pipe seam type anchor rod is in direct contact with the inner wall of a drilled hole, dynamic change of the periphery of the drilled hole under the action of stress can be sensed, and collection of fine strain and vibration signals of the strain and vibration sensor integrated grating to a rock is facilitated.
(3) On the later analysis and processing of data, a rasterized model of monitoring drilling holes can be established by means of the obtained multipoint strain data, the monitored data are presented in a visual form, the tiny deformation of a rock mass can be visually observed, the working condition of a strain sensor of each point can be judged, and the visualization degree of the monitored data is greatly increased.
(4) The invention integrates two effective data monitoring means of stress and vibration sensors, can simultaneously carry out multi-parameter intelligent monitoring, solves the defect that the traditional ground pressure monitoring can only depend on a single parameter, provides theoretical and data support for reasonably developing the work of mines, and avoids excessive support while improving the safety;
(5) the invention is provided with a high-intelligence information intelligent integrated device, and an intelligent information processing chip and a wireless transmitting and receiving system are arranged in the device, thereby realizing high intelligence of data receiving and processing.
Drawings
Fig. 1 is a schematic diagram of the overall working structure of the present invention.
Fig. 2 is a schematic structural diagram of the strain and vibration sensor integrated grid of the present invention.
Fig. 3 is a schematic view of a local installation of the intelligent information integration device of the present invention.
Fig. 4 is a schematic view of the overall structure of the auxiliary mounting device of the present invention.
FIG. 5 is a partial structural schematic view of a center rod with a shroud and shroud retainer.
Fig. 6 is a schematic diagram of the relative positions of the grid carrier and the device fixing body according to the present invention.
Fig. 7 is a schematic view of the sleeve structure of the present invention.
Fig. 8 is a schematic view of a partial groove structure of the sleeve according to the present invention.
Fig. 9 is a schematic structural view of the movable brace of the present invention.
Fig. 10 is a schematic view of the connection structure of the movable stay bar and the sleeve according to the present invention.
Fig. 11 is a schematic structural view of the device fixing body 12-1 with a threaded hole.
Fig. 12 is a schematic view of the structure of the device holder 12-2 having a groove formed in the side surface thereof.
Fig. 13 is a schematic diagram of the relative positions of the L-shaped semi-hollow column and the device fixing body.
Fig. 14 is a schematic view of a combination structure of the L-shaped semi-hollow cylinder and the spring.
Wherein: 1-a pipe seam type anchor rod body; 2-1, 2-2-strain and vibration inductor integrated grids; 3-fixing the tray; 4-information intelligent integrated device; 5-a wired transmission unit; 6-silica gel coat; 7-1, 7-2-grid carrier; 8-movable stay bar; 9-a sleeve; 10-a central rod; 11-a fastening bolt; 12-1, 12-2-device fixation; 13-L type semi-hollow column; 14-a spring; 15-1, 15-2-sleeve baffles; 16-a movable brace rod groove; 17-a sleeve groove; 18-a movable brace rod circular hole; 19-a fixed post; 20-device fixation body threaded hole; 21-a cuboid groove; 22-central rod threads; 23-threaded knob.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Example 1
As shown in fig. 1-3, the embodiment provides a latticed rock stress and vibration monitoring device based on a pipe seam type anchor rod, which is characterized by comprising a pipe seam type anchor rod body 1, a strain and vibration sensor integrated grid 2, a silica gel outer sleeve 6, a fixed tray 3, an information intelligent integrated device 4 and a wired transmission unit 5, wherein the strain and vibration sensor integrated grid 2 is composed of a plurality of high-precision strain sensors 2-1 and two vibration sensors 2-2, a grid main body is the strain sensors 2-1 which are uniformly and symmetrically distributed at a certain interval from top to bottom, the two vibration sensors 2-2 are arranged at symmetrical positions of a drilling hole opening, the sensors are connected by the wired transmission unit 5, the fixed tray 3 is arranged at a contact position of the bottom of the pipe seam type anchor rod and a rock wall, and is provided with a small hole, used for reinforcing the surrounding rock and also used as a carrier for fixing and placing the information intelligent integrated device 4.
Further, the intelligent information integration device 4 is connected with the strain and vibration sensor integration grid 2 by virtue of a wired transmission unit 5, is used for collecting signals transmitted by the strain and vibration sensor integration grid 2, analyzes and processes the signals, and is internally provided with a high-capacity battery for supplying power to the intelligent information integration device and the monitoring component so as to ensure the continuous work of the intelligent information integration device.
Furthermore, the silica gel outer sleeve is attached to the surface of the strain and vibration sensor integrated grid 2, and plays a role in water and dust prevention.
The intelligent monitoring device in this embodiment, including the pipe seam formula stock body of rod, strain and the integrated grid of vibration inductor and information intelligence integrated device, wherein the pipe seam formula stock body of rod need use the polisher in advance to carry out burnishing and polishing, then inside the installation gets into the drilling that has cleared up totally, strain and the integrated grid of vibration inductor arrange strain inductor and vibration inductor according to reasonable interval, and regard the cable of inductor as the structure skeleton of strain and the integrated grid of vibration inductor, form two web structure's inductor grid. A tray of the pipe seam type anchor rod is pre-provided with small holes for installing and fixing an information intelligent integrated device.
Example 2
The embodiment provides an auxiliary installation device for installing a strain and vibration sensor integrated grid to a pipe seam type anchor rod which is drilled in a borehole, the auxiliary installation device can be applied to the installation of the grid type rock stress and vibration monitoring device based on the pipe seam type anchor rod in the embodiment 1, as shown in fig. 4 to 14, the auxiliary installation device comprises a grid carrier, a movable support rod 8, a sleeve 9, a central rod 10, a fastening bolt 11, a device fixing body, an L-shaped semi-hollow cylinder 13, a spring 14, a sleeve baffle and a threaded knob 23, the grid carrier is used as an installation carrier of the strain and vibration sensor integrated grid and consists of two symmetrical hollow semi-cylinders 7-1 and 7-2, the device fixing body consists of two cylindrical part members 12-1 and 12-2 which are positioned at the upper end and the lower end of the grid carrier, one end of four L-shaped semi-hollow cylinders 13 positioned at the upper end and the lower end of the auxiliary installation device is connected with the device fixing body, the other end is connected with the grid supporting body through a spring 14, wherein, the device fixing body 12-1 positioned at the upper end is provided with a cylindrical threaded hole 20 at the central position of the lower surface, the depth of the threaded hole is less than that of the device fixing body, the diameter of the threaded hole is the same as that of the central rod and is matched with a thread 22 at the upper end part of the central rod, the device fixing body 12-2 positioned at the lower end is provided with a cylindrical through hole with a diameter slightly larger than that of the central rod at the central position and is not fixedly connected with the central rod, the central rod passes through the device fixing body, a thread knob 23 is arranged at one end, a sleeve 9 is arranged on the central rod 10, the inner diameter of the sleeve 9 is slightly larger than that of the central rod 10, and a sleeve baffle plate taking the central rod 10 as a shaft is fixed on the central rod, the upper end and the lower end of the sleeve are provided with cylindrical components 15-1 and 15-2 with smaller thickness, the cylindrical components can move up and down along with the rotation of the central rod 10 and push the sleeve 9 to move up and down simultaneously by taking the central rod as an axis, four symmetrically distributed cylindrical grooves 17 are formed in the side surface of the sleeve 9, a fixed support 19 is arranged in the center of each groove 17, a through hole is formed in each fixed support, one end of each movable support 8 is fixed on the grating carrier, the end part of the other end of each movable support is provided with a groove 16, and round holes 18 with the same diameter as the diameter of the through hole in each fixed support are formed in the two sides of each groove 16 so as to be connected with the fixed supports 19 on the sleeve through fastening bolts 11.
Further, the device fixing body 12-2 at the lower end is provided with two rectangular grooves 21 on the side surface, and the length of the grooves is the same as the thickness of the device fixing body, so that cables can conveniently pass through when the strain and vibration sensor integrated grid is installed.
Further, each L-shaped semi-hollow cylinder 13 comprises a vertical part and a horizontal part, the vertical part perpendicular to the device fixing body is a solid cylinder, the horizontal part perpendicular to the grid supporting body is a hollow circular tube, a spring 14 is placed inside the hollow circular tube, the diameter of each spring 14 is slightly smaller than the inner diameter of the hollow circular tube, one end of each spring 14 is connected with the circular tube, the other end of each spring is connected with the grid supporting body, and the length of one end, connected with the grid supporting body, of each spring exposed outside the circular tube is shorter, so that the springs can only extend along the radial direction.
The details of the structure of the grid carrier, the device fixing body, the sleeve and the movable stay bar are further explained below with reference to the drawings.
As shown in fig. 5 and 6, the structure of the grating carrier and the relative position of the grating carrier and the device fixing body are schematically illustrated, the grating carrier is divided into two parts 7-1 and 7-2, the two parts are in a semi-hollow round tube shape, and the distance between the two grating carriers after the grating carrier is completely expanded is the same as the opening distance of the tube seam type anchor rod. The device fixing bodies are arranged at the two ends of the grating bearing body, the outer diameter of the device fixing bodies is slightly smaller than the inner diameter of the pipe seam type anchor rod, the device fixing bodies at the two ends are fixed, the grating bearing body is limited not to move along the axial direction of the anchor rod, and only the expansion movement can be carried out along the radial direction of the anchor rod.
As shown in fig. 7 and 8, the sleeve 9 is a hollow cylinder, the inner diameter of the sleeve 9 is slightly larger than the diameter of the central rod 10, so as to ensure that the sleeve can move smoothly on the central rod, four cylindrical grooves 17 are symmetrically arranged at the middle positions of the side surfaces of the sleeve as required, a flat O-shaped column 19 is arranged at the center position of each groove, small holes with the same diameter as the end parts of the movable stay bars shown in fig. 9 are formed in the column, the movable stay bars 8 and the column are connected together through fastening bolts 11, and as shown in fig. 10, the movable stay bars can rotate around the fastening bolts 11, so that the stretching and shrinking effects are achieved.
The use principle of the auxiliary installation device is as follows: whole supplementary installation device externally rotates the screw thread knob when using, and the screw thread knob drives well core rod and rotates, is provided with the screw thread near drilling bottom one end in lieing in well core rod, and well core rod rotates and cooperatees with the screw hole on the device fixing body lower surface that lies in drilling bottom, drives well core rod to the motion of drilling bottom promptly, and the rotatory rising motion also takes place for the sleeve baffle of fixing on well core rod simultaneously, promotes the sleeve and takes place to remove simultaneously promptly. The movable support rod is fixed on the grid bearing body, the grid bearing body is limited by the device fixing bodies at the two ends and cannot move towards the bottom of the drilled hole, and the movable support rod cannot move towards the bottom of the drilled hole, so that the movable support rod can only rotate around the fastening bolt by taking the fastening bolt as an axis, and can be unfolded towards the two sides to push the grid bearing body to expand towards the two sides, and finally the movable support rod is contacted with the inner wall of the pipe seam type anchor rod, so that the grid and the silica gel outer sleeve are stuck to the inner wall of the pipe seam type anchor rod in the lump, and the installation of the strain and vibration sensor integrated grid is completed.
Example 3
The embodiment provides an installation and use method of a latticed rock mass stress and vibration monitoring device based on a tube seam type anchor rod in embodiment 1, which is characterized by mainly comprising the following steps:
step 1: and drilling the required diameter and depth drill holes according to the actual conditions and requirements of the mine by using the rock drilling machine according to a reasonable distance.
Step 2: utilize stock grinding device to carry out burnishing and polishing to seam formula stock inner wall to make when carrying out the installation of strain and the integrated grid 2 of vibration inductor, more be favorable to the inseparable laminating of grid and stock inner wall.
And step 3: and performing linkage debugging and calibration before field installation of the strain and vibration sensor integrated grating 2 and the information intelligent integrated device 4, and ensuring that the whole signal receiving device can normally operate.
And 4, step 4: cleaning the drilled hole, installing the pipe seam type anchor rod into the drilled hole which is drilled in advance and cleaned, installing a tray, and then placing the resin cartridge at the bottom of the pipe seam type anchor rod.
And 5: the normally debugged strain and vibration inductor integrated grating is smoothly attached to the silica gel outer sleeve 6, then the whole silica gel outer sleeve 6 is placed on a grating bearing body of the auxiliary installation device, and the surface of the strain and vibration inductor integrated grating is uniformly coated with the super glue, so that the grating and the silica gel outer sleeve are ensured to be coated with the super glue.
Step 6: the auxiliary installation device is placed into the pipe seam type anchor rod slowly and then pushed into the bottom of the drill hole slowly, the auxiliary installation device is in contact with and breaks through a resin cartridge placed at the bottom of the drill hole in advance, the resin cartridge is solidified after the auxiliary installation device is stopped for a period of time, and the device fixing body of the auxiliary installation device, which is located at the bottom of the drill hole, is fixed at the bottom of the drill hole.
And 7: rotate screw thread knob 23, make screw thread knob 23 drive well core rod 10 and rotate, well core rod upper end screw thread 22 cooperatees with screw hole 20, drive well core rod 10 and to the motion of drilling bottom, the sleeve baffle of fixing on well core rod this moment is to drilling bottom rotary motion simultaneously, promote sleeve 9 and remove to the drilling bottom, because movable stay bar 8 fixes on the grid supporting body, movable stay bar 8 then can use fastening bolt 11 to take place to rotate this moment as the axle, it expandes to drive the grid supporting body to both sides, and finally contact with pipe seam formula stock inner wall, accomplish the installation work of grid and silica gel overcoat, supplementary installation device can take out through reverse rotation, supply the re-installation to use, perhaps directly stay inside pipe seam formula stock, strengthen the protection as protection device to the grid.
And 8: and connecting a cable led out from the inside of the pipe seam type anchor rod into the intelligent information integrated device 4, and installing and fixing the intelligent information integrated device 4 on the tray 3.
And step 9: the information intelligent integrated device 4 is connected to a computer on the ground through a wireless network to perform normal monitoring work and subsequent data analysis and processing work.
The above examples are merely illustrative for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Nor is it intended to be exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (6)
1. An auxiliary installation device for installing a strain and vibration sensor integrated grid to a pipe seam type anchor rod which is drilled into a drilled hole is characterized by comprising a grid bearing body, a movable support rod (8), a sleeve (9), a center rod (10), a fastening bolt (11), a device fixing body, an L-shaped semi-hollow cylinder (13), a spring (14), a sleeve baffle and a thread knob (23), wherein the grid bearing body is used as an installation carrier of the strain and vibration sensor integrated grid and consists of two symmetrical hollow semi-cylinders, the device fixing body consists of two cylindrical parts positioned at the upper end and the lower end of the grid bearing body, one end of each of the four L-shaped semi-hollow cylinders (13) positioned at the upper end and the lower end of the auxiliary installation device is connected with the device fixing body, and the other end of each of the four L-shaped semi-hollow cylinders (13) positioned at the upper end and the lower end of the auxiliary installation device is connected with the grid bearing body through the spring (14), wherein, the device fixing body at the upper end is provided with a cylindrical threaded hole (20) at the center position of the lower surface thereof, the depth of the threaded hole is less than that of the device fixing body, the diameter of the threaded hole is the same as that of the central rod and is matched with the thread (22) at the upper end part of the central rod, the device fixing body at the lower end is provided with a cylindrical through hole with a diameter slightly larger than that of the central rod at the center position thereof and is not fixedly connected with the central rod, the central rod passes through the device fixing body, one end of the central rod is provided with a thread knob (23), a sleeve (9) is arranged on the central rod (10), the inner diameter of the sleeve (9) is slightly larger than that of the central rod (10), a sleeve baffle plate taking the central rod (10) as a shaft is fixed on the central rod, the sleeve plate is arranged at the upper end and the lower end of the sleeve and consists of cylindrical components with smaller thickness, can move up and down along with the rotation of the central rod (10) and push the sleeve (9) to move up and down simultaneously taking the central rod as a shaft, open cylindrical recess (17) that have four symmetric distributions on the side of sleeve (9), central point at cylindrical recess (17) puts and is provided with fixed stay (19), set up the through-hole on the fixed stay, movable stay bar (8) one end is fixed in on the grid supporting body, other end tip is opened flutedly (16), set up round hole (18) the same with fixed stay upper bore diameter in the both sides of recess (16) to be connected with fixed stay (19) on the sleeve through fastening bolt (11).
2. The auxiliary mounting device as claimed in claim 1, wherein the device fixing body at the lower end is formed with two rectangular parallelepiped grooves (21) on its side surface, the length of the grooves being the same as the thickness of the device fixing body, so as to facilitate the passage of cables when the strain and vibration sensor integrated grid is mounted.
3. The auxiliary mounting device as claimed in claim 2, wherein each L-shaped semi-hollow cylinder (13) comprises a vertical part and a horizontal part, the vertical part perpendicular to the device fixing body is a solid cylinder, the horizontal part perpendicular to the grid supporting body is a hollow circular tube, a spring (14) is placed inside the hollow circular tube, the diameter of each spring (14) is slightly smaller than the inner diameter of the hollow circular tube, one end of each spring (14) is connected with the circular tube, the other end of each spring is connected with the grid supporting body, and the length of the spring exposed outside the circular tube at the end connected with the grid supporting body is shorter, so that the spring can only extend in the radial direction.
4. An installation and use method of a grid type rock mass stress and vibration monitoring device based on a pipe seam type anchor rod comprises a pipe seam type anchor rod body (1), a strain and vibration inductor integrated grid (2), a silica gel outer sleeve (6), a fixed tray (3), an information intelligent integrated device (4) and a wired transmission unit (5), wherein the strain and vibration inductor integrated grid (2) is composed of a plurality of high-precision strain inductors (2-1) and two vibration inductors (2-2), a grid main body is the strain inductors (2-1) which are uniformly and symmetrically distributed from top to bottom, the two vibration inductors (2-2) are arranged at symmetrical positions of a drilling hole opening, the inductors are connected by the wired transmission unit (5), the fixed tray (3) is installed at the contact position of the bottom of the pipe seam type anchor rod and a rock wall, the tray is provided with small holes for reinforcing surrounding rocks and also used as a carrier for fixing and placing an information intelligent integrated device (4), wherein the auxiliary installation device of any one of claims 1 to 3 can be applied to the installation of the latticed rock stress and vibration monitoring device based on the pipe seam type anchor rod, and the method is characterized by mainly comprising the following steps of:
step 1: drilling holes with required diameters and depths according to actual conditions and requirements of mines and reasonable intervals by using a rock drilling machine;
step 2: the inner wall of the seam type anchor rod is ground and polished by using the anchor rod grinding device, so that the grid is more favorably and closely attached to the inner wall of the anchor rod when the strain and vibration sensor integrated grid (2) is installed;
and step 3: linkage debugging and calibration before field installation of the strain and vibration sensor integrated grating (2) and the information intelligent integrated device (4) are carried out, and the normal operation of the whole signal receiving device is ensured;
and 4, step 4: cleaning the drill hole, installing the pipe seam type anchor rod into the pre-drilled and cleaned drill hole, installing a tray, and then placing the resin cartridge at the bottom of the pipe seam type anchor rod;
and 5: smoothly attaching the normally debugged strain and vibration sensor integrated grating to a silica gel jacket (6), then placing the whole silica gel jacket (6) on a grating bearing body of an auxiliary mounting device, and uniformly coating strong glue on the surface of the strain and vibration sensor integrated grating to ensure that the grating and the silica gel jacket are coated with the strong glue;
step 6: slowly placing the ready auxiliary installation device into the inside of the pipe seam type anchor rod, slowly pushing the auxiliary installation device into the bottom of the drill hole, contacting and crushing a resin cartridge which is placed at the bottom of the drill hole in advance, standing for a period of time until the resin cartridge is solidified, and fixing a device fixing body of the auxiliary installation device, which is positioned at the bottom of the drill hole, at the bottom of the drill hole;
and 7: the thread knob (23) is rotated, the thread knob (23) drives the central rod (10) to rotate, threads (22) at the upper end of the central rod are matched with the threaded holes (20) to drive the central rod (10) to move towards the bottom of a drilled hole, the sleeve baffle fixed on the central rod simultaneously rotates towards the bottom of the drilled hole at the moment, the sleeve (9) is pushed to move towards the bottom of the drilled hole, the movable support rod (8) is fixed on the grid supporting body, the movable support rod (8) rotates by taking the fastening bolt (11) as an axis at the moment, the grid supporting body is driven to expand towards two sides and finally contacts with the inner wall of the pipe seam type anchor rod, the installation work of the grid and the silica gel outer sleeve is completed, the auxiliary installation device can be taken out through reverse rotation for installation and use again, or is directly left in the pipe seam type anchor rod to serve as a protection device to strengthen and protect the grid;
and 8: the cable led out from the inside of the pipe seam type anchor rod is connected into the intelligent information integration device (4), and the intelligent information integration device (4) is installed and fixed on the fixed tray (3);
and step 9: and the information intelligent integrated device (4) is connected to a computer on the ground through a wireless network to perform normal monitoring work and subsequent data analysis and processing work.
5. The method for installing and using the grated rock mass stress and vibration monitoring device based on the tube seam type anchor rod as claimed in claim 4, wherein the information intelligent integration device (4) is connected with the strain and vibration sensor integration grating (2) by means of a wired transmission unit (5) and is used for collecting signals transmitted by the strain and vibration sensor integration grating (2) and analyzing and processing the signals, and a high-capacity battery is arranged in the information intelligent integration device to supply power for the information intelligent integration device and the monitoring component so as to ensure continuous operation of the information intelligent integration device.
6. The installation and use method of the latticed rock mass stress and vibration monitoring device based on the pipe seam type anchor rod as claimed in claim 4, wherein the silica gel outer sleeve (6) is attached to the surface of the strain and vibration sensor integrated grid (2) to play a role in water and dust prevention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011149993.0A CN112798037B (en) | 2020-10-23 | 2020-10-23 | Grid type rock mass stress and vibration monitoring device based on pipe seam type anchor rod, auxiliary installation device and installation and use method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011149993.0A CN112798037B (en) | 2020-10-23 | 2020-10-23 | Grid type rock mass stress and vibration monitoring device based on pipe seam type anchor rod, auxiliary installation device and installation and use method |
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| CN112798037B true CN112798037B (en) | 2022-02-15 |
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| DE102010063098A1 (en) * | 2010-12-15 | 2012-02-16 | Hilti Aktiengesellschaft | rock bolt |
| CN105604057B (en) * | 2016-03-14 | 2017-12-08 | 北京科技大学 | One kind expands unfolding wing type anchor rod device |
| CN106759326B (en) * | 2016-12-14 | 2019-03-12 | 重庆大学 | A kind of Stress Control multistage opening type anchor pole and anchoring construction method |
| CN110030025B (en) * | 2019-05-17 | 2024-01-30 | 东北大学 | Self-expansion type pipe joint anchor rod for surrounding rock large deformation and preparation and use methods thereof |
| CN110219687B (en) * | 2019-06-21 | 2020-08-21 | 安徽理工大学 | Method for monitoring stress distribution of full-length anchoring bolt body |
| CN110469353A (en) * | 2019-08-14 | 2019-11-19 | 四川大学 | Mechanical prestressed anchor and its installation and recovery method can be recycled in one kind |
| CN111577360B (en) * | 2020-06-12 | 2021-04-27 | 中南大学 | Use method of recoverable acquisition instrument for real-time observation of stress characteristic and vibration characteristic of stope surrounding rock |
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