Arrangement device for installing micro-seismic sensor in rock mass engineering

Abstract

The invention discloses an arrangement device, particularly discloses an arrangement device for mounting a micro-seismic sensor in rock mass engineering, and belongs to the technical field of design and manufacturing of rock mass engineering monitoring process equipment. The arrangement device for installing the micro-seismic sensor in the rock mass engineering is high in universality, is slightly influenced by rock wall quality, and can meet the large-area and high-rigidity requirements. The arrangement device comprises a micro-seismic sensor, the arrangement device further comprises a mounting structure, a supporting connection coupling assembly and a mounting adjustment assembly, and the micro-seismic sensor is movably arranged in the supporting connection coupling assembly through the mounting structure; in the ground condition monitoring process, the micro-seismic sensor is in abutting coupling connection with the hole wall of a monitoring hole drilled in rock mass engineering through the supporting, connecting and coupling assembly under the cooperation of the installation adjusting assembly and the installation structure.

Description

Technical Field

[0001] The invention relates to an arrangement device, in particular to an arrangement device for installing microseismic sensors in rock mass engineering, and belongs to the technical field of design and manufacturing of rock mass engineering monitoring process equipment. Background Art

[0002] Microseismic monitoring technology is a three-dimensional spatial monitoring technology for rock microfractures, which has developed rapidly in recent years. It can not only analyze the time, location and magnitude of rock burst events through sound waves, but also the microseismic monitoring system with higher sensitivity can capture rock microfracture precursor events with smaller magnitude than rock bursts, thus providing potential possibilities for the prediction of surrounding rock damage risks in rock engineering. Common microseismic monitoring systems are mainly composed of sensors, signal acquisition instruments, communication systems, central servers, monitoring systems and data analysis software. Whether the coupling between the sensor and the rock wall is good or not directly and primarily determines the reception quality of the microseismic signal. In linear projects such as tunnel projects with a long monitoring range, the recyclability of the sensor coupling device plays a key role in the economic cost of the monitoring process. Therefore, the sensor coupling method is crucial in microseismic monitoring.

[0003] The commonly used microseismic sensor coupling methods on the market can be roughly divided into two categories. One is the permanent coupling method, which generally uses coupling agents such as anchoring agents and cement mortar to permanently seal the microseismic sensor at the bottom of the borehole. The advantage of this method is that it can couple the sensor to the borehole rock wall over a large area and with high rigidity. The interference generated when the vibration wave passes through the coupling part is small, and the original waveform of the vibration wave can be restored with high precision. However, this coupling method cannot recover the sensor. When the sensor fails during the monitoring period, it cannot be repaired or replaced. When the monitoring range moves over time, a large number of microseismic sensors will be invested, resulting in extremely high monitoring costs. The other is a recyclable coupling device, which generally uses a deformable mechanical device to couple the sensor to the rock wall. However, there are still certain problems with the existing recyclable coupling devices. First, most of the existing coupling devices are designed and installed for fixed engineering scenarios. When applied to different engineering scenarios, the borehole diameter, borehole inclination, and rock wall conditions change, and the coupling device lacks universal capabilities. In addition, most of the existing microseismic sensor recyclable coupling devices use hole wall support plates and other methods to contact the rock wall, but their contact area is small. When the borehole rock wall conditions are poor, the coupling stability is difficult to guarantee. In addition, due to the small cross-section of the coupling device during vibration transmission, its lower stiffness will also affect the quality of the microseismic signal. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a layout device for installing microseismic sensors in rock engineering, which has strong universality, is less affected by rock wall quality, and can meet the requirements of large area and high rigidity.

[0005] The technical solution adopted to solve the above technical problems is: a layout device for installing microseismic sensors in rock engineering, including microseismic sensors, and the layout device also includes a mounting structure, a support connection coupling component and a mounting adjustment component. The microseismic sensor is movably arranged in the support connection coupling component through the mounting structure; the microseismic sensor in the process of ground condition monitoring is tightly coupled with the top of the wall of the monitoring hole drilled in the rock engineering through the support connection coupling component with the cooperation of the mounting adjustment component and the mounting structure.

[0006] Furthermore, the microseismic sensor is an inverted frustum-shaped structure, and an installation cavity adapted to the inverted frustum-shaped structure is provided on the supporting connection coupling assembly. The microseismic sensor detachably arranged in the installation cavity is adjusted to determine its arrangement position in the installation cavity by installing an adjustment assembly with the cooperation of the installation structure.

[0007] A preferred embodiment of the above scheme is that the installation and adjustment assembly includes an installation and recovery rod, a drive connector and a socket transition piece group, the microseismic sensor also includes a data cable, the drive connector is fixed at the geometric center of the top of the microseismic sensor, the installation and recovery rod is connected to the drive connector through the socket transition piece group, and the data cable passing through the drive connector extends upward from the monitoring hole through the installation and recovery rod with the cooperation of the socket transition piece group.

[0008] Furthermore, the driving connecting head is a hexagonal square head, and the sleeve transition piece group includes a hexagonal square head sleeve, an extension sleeve and a fastening screw. More than two groups of connecting holes are symmetrically arranged at the lower end of the installation and recovery rod, the upper end of the hexagonal square head sleeve and the corresponding positions of the extension sleeve. The installation and recovery rod and the hexagonal square head sleeve are connected as a whole through the extension sleeve with the cooperation of the fastening screws, and the inner hole shape of the lower connecting end of the hexagonal square head is adapted to the circumferential shape of the hexagonal square head; during the installation and recovery process of the microseismic sensor, the hexagonal square head sleeve is sleeved on the hexagonal square head.

[0009] The preferred embodiment of the above scheme is that the supporting connection coupling assembly includes a fixed installation limit frame and at least three groups of coupling connection support blocks, each group of coupling connection support blocks is arranged on the fixed installation limit frame so as to be reciprocatingly movable in the radial direction, and each group of coupling connection support blocks movably connected as a whole by the fixed installation limit frame forms a conical installation cavity inside thereof, and the microseismic sensor is movably arranged in the installation cavity through the installation structure; during the installation of the microseismic sensor, the installation recovery rod drives the microseismic sensor to move axially through the driving connector, thereby driving each group of coupling connection support blocks to move radially and tightly couple with the top of the wall of the corresponding monitoring hole.

[0010] Furthermore, the mounting structure is a thread that is adapted to each other and is arranged on the mounting cavity and the inverted frustum-shaped structure of the microseismic sensor.

[0011] A preferred embodiment of the above scheme is that there are four coupling connection support blocks, and the four coupling connection support blocks can be reciprocated radially through a fixed mounting limit frame to form a cylindrical coupling body with adjustable outer diameter, and the frustum-shaped mounting cavity is located inside the cylindrical coupling body; a properly arranged microseismic sensor is threadedly connected to the mounting cavity, and the outer wall of the cylindrical coupling body is tightly coupled to the hole wall of the corresponding monitoring hole.

[0012] Furthermore, the fixed installation limit frame includes a top limit flange, a bottom limit flange and a buffer reset member group, and strip mounting holes which are adapted to each other in position are respectively arranged on the top limit flange and the bottom limit flange, and each strip mounting hole extends radially along the top limit flange or the bottom limit flange, and a sliding connection head is respectively arranged at the upper and lower ends of each group of coupling connection support blocks; the upper and lower ends of each group of coupling connection support blocks are respectively connected to the corresponding sliding connection heads and the corresponding strip mounting holes, and are radially retractable and combined into a support connection coupling assembly with the cooperation of the buffer reset member group.

[0013] A preferred embodiment of the above scheme is that the buffer reset component group includes a plurality of tube springs whose number is equal to the number of the strip-shaped mounting holes, and each tube spring is connected between the corresponding sliding connector and the wall of the corresponding strip-shaped mounting hole.

[0014] Furthermore, at least three bottom fixing steel nails are arranged on the lower end surface of the bottom limiting flange, and each bottom fixing steel nail 11 is evenly distributed along the circumference of the bottom limiting flange 9 .

[0015] The beneficial effects of the present invention are as follows: the technical solution provided by the present application is based on the existing microseismic sensor, and the arrangement device of the present application is formed by adding a mounting structure, a support connection coupling assembly and an installation adjustment assembly, and the microseismic sensor is arranged in the support connection coupling assembly through the mounting structure; then, in the process of ground condition monitoring, the microseismic sensor is tightly coupled with the top of the monitoring hole wall drilled in the rock mass engineering through the support connection coupling assembly in cooperation with the installation adjustment assembly and the mounting structure. In this way, since the arrangement device of the present application is directly tightly coupled with the top of the monitoring hole wall drilled in the rock mass engineering through the support connection coupling assembly in cooperation with the installation structure and the installation adjustment assembly, it is not only highly universal and less affected by the quality of the rock wall, but also can meet the installation requirements of large area and high rigidity; furthermore, since the support connection coupling assembly and the microseismic sensor are both detachably arranged in the monitoring hole, after use, the support connection coupling assembly and the microseismic sensor can be disassembled and reused, thereby achieving the purpose of significantly reducing the cost of temporary testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a main cross-sectional view of the support connection coupling assembly and the microseismic sensor not coupled with each other involved in the arrangement device for installing the microseismic sensor in rock engineering of the present invention (excluding the top limit flange);

[0017] Figure 2 for Figure 1 A top view of

[0018] Figure 3 It is a main cross-sectional view of the coupling between the supporting connection coupling assembly and the microseismic sensor involved in the arrangement device for installing the microseismic sensor in rock engineering of the present invention (excluding the top limit flange);

[0019] Figure 4 for Figure 3 A top view of

[0020] Figure 5 It is a disassembly diagram of the connection between the installation adjustment component structure involved in the arrangement device for installing the microseismic sensor in rock engineering of the present invention and the microseismic sensor;

[0021] Figure 6 The present invention is a schematic diagram of the arrangement of bottom fixing steel nails on the bottom limiting flange involved in the arrangement device for installing microseismic sensors in rock engineering.

[0022] Marked in the figure are: microseismic sensor 1, installation cavity 2, installation recovery rod 3, drive connector 4, hexagonal square head sleeve 5, extension sleeve 6, coupling connection support block 7, top limit flange 8, bottom limit flange 9, strip mounting hole 10, bottom fixing steel nail 11, fastening screw 12. DETAILED DESCRIPTION

[0023] like Figure 1 to Figure 6The present invention provides a layout device for installing microseismic sensors for rock engineering, which has strong universality, is less affected by the quality of the rock wall, and can meet the requirements of large-area high rigidity. The layout device includes a microseismic sensor 1, and the layout device also includes a mounting structure, a support connection coupling assembly, and a mounting adjustment assembly. The microseismic sensor 1 is movably arranged in the support connection coupling assembly through the mounting structure; the microseismic sensor in the process of ground condition monitoring is tightly coupled with the top of the monitoring hole wall drilled in the rock engineering through the support connection coupling assembly in cooperation with the mounting adjustment assembly and the mounting structure. The technical solution provided by the present application is based on the existing microseismic sensor, and the layout device of the present application is formed by adding a mounting structure, a support connection coupling assembly, and a mounting adjustment assembly, and the microseismic sensor is movably arranged in the support connection coupling assembly through the mounting structure; then, in the process of ground condition monitoring, the microseismic sensor is tightly coupled with the top of the monitoring hole wall drilled in the rock engineering through the support connection coupling assembly in cooperation with the mounting adjustment assembly and the mounting structure. In this way, since the arrangement device of the present application is directly coupled with the top of the monitoring hole wall drilled in the rock engineering through the support connection coupling assembly in cooperation with the installation structure and the installation adjustment assembly, it is not only universal and less affected by the quality of the rock wall, but also can meet the large-area high-rigidity installation requirements; furthermore, since the support connection coupling assembly and the microseismic sensor are detachably arranged in the monitoring hole, after use, the support connection coupling assembly and the microseismic sensor can be disassembled and reused, thereby achieving the purpose of significantly reducing the cost of clinical testing. Combined with the prior art, that is, the microseismic sensor 1 described in the present application is a feature of an inverted frustum-shaped structure, the present application also provides an installation cavity 2 adapted to the inverted frustum-shaped structure on the support connection coupling assembly, and the microseismic sensor 1 detachably arranged in the installation cavity 2 is adjusted to determine its arrangement position in the installation cavity 2 by the installation adjustment assembly in cooperation with the installation structure.

[0024] Accordingly, in order to improve the operability of the various components of the arrangement device of the present application, while simplifying its structure to the maximum extent, facilitating manufacturing and adapting to the structure of the existing microseismic sensor 1, the installation and adjustment assembly of the present application includes an installation and recovery rod 3, a drive connector 4 and a sleeve transition piece group, and the microseismic sensor 1 also includes a data line. The drive connector 4 is fixed at the geometric center of the top of the microseismic sensor, and the installation and recovery rod 3 is connected to the drive connector 4 through the sleeve transition piece group. The data line passing through the drive connector 4 extends upward from the monitoring hole through the installation and recovery rod 3 with the cooperation of the sleeve transition piece group. The supporting connection coupling assembly includes a fixed installation limit frame and at least three groups of coupling connection support blocks 7, each group of coupling connection support blocks 7 is arranged on the fixed installation limit frame so as to be reciprocatingly movable in the radial direction, and each group of coupling connection support blocks 7, which are movably connected as a whole by the fixed installation limit frame, forms a frustum-shaped installation cavity 2 inside thereof, and the microseismic sensor 1 is movably arranged in the installation cavity 2 through the installation structure; during the installation of the microseismic sensor 1, the installation recovery rod 3 drives the microseismic sensor 1 to move axially through the driving connector 4, and drives each group of coupling connection support blocks 7 to move radially and then couple tightly with the corresponding monitoring hole wall. The installation structure is a mutually adapted threaded arrangement on the installation cavity 2 and the inverted frustum-shaped structure of the microseismic sensor 1. Of course, the installation structure here can also be an installation structure similar to the clamping method.

[0025] In order to facilitate connection and operation, a more specific structure of the present application is that the driving connecting head 4 is a hexagonal square head, and the sleeve transition piece group includes a hexagonal square head sleeve 5, an extension sleeve 6 and a fastening screw 12. More than two groups of connecting holes are symmetrically arranged at the lower end of the installation and recovery rod 3, the upper end of the hexagonal square head sleeve 5 and the corresponding positions of the extension sleeve 6. The installation and recovery rod 3 and the hexagonal square head sleeve 5 are connected as a whole through the extension sleeve 6 with the cooperation of the fastening screw 12, and the inner hole shape of the lower connecting end of the hexagonal square head is adapted to the circumferential shape of the hexagonal square head; during the installation and recovery process of the microseismic sensor 1, the hexagonal square head sleeve 5 is sleeved on the hexagonal square head. The coupling connection support blocks 7 are four in number, and the four coupling connection support blocks 7 can reciprocate radially through a fixed installation limit frame to form a cylindrical coupling body with adjustable outer diameter, and the frustum-shaped installation cavity 2 is located inside the cylindrical coupling body; the properly arranged microseismic sensor 1 is threadedly connected to the installation cavity 2, and the outer wall of the cylindrical coupling body is tightly coupled with the hole wall of the corresponding monitoring hole. The fixed installation limit frame includes a top limit flange 8, a bottom limit flange 9 and a buffer reset component group, and the top limit flange 8 and the bottom limit flange 9 are respectively provided with strip mounting holes 10 with mutually adapted positions, and each strip mounting hole extends radially along the top limit flange 8 or the bottom limit flange 9, and each group of coupling connection support blocks 7 is respectively provided with a sliding connector at the upper and lower ends, and the upper and lower ends of each group of coupling connection support blocks are respectively connected to the corresponding sliding connector and the corresponding strip mounting hole 10 in the cooperation of the buffer reset component group to form a support connection coupling assembly.

[0026] Combined with the requirements of installation and adjustment, the buffer reset component group of the present application preferably includes a number of tube springs that is equivalent to the number of strip mounting holes 10, and each tube spring is connected between the corresponding sliding connector and the wall of the corresponding strip mounting hole. At the same time, in order to connect and fix with the bottom of the test hole, the present application also arranges at least three bottom fixing steel nails 11 on the lower end surface of the bottom limit flange 9, and each bottom fixing steel nail 11 is evenly distributed along the circumference of the bottom limit flange 9.

[0027] In summary, the above arrangement device of the present application also has the following advantages:

[0028] 1) The present application uses a spiral installation recovery rod to rotate the sensor housing, pushes the spiral slider, i.e., the above-mentioned coupling connection support block, outward and makes good contact with the rock wall, thereby solving the problem of being able to install and recover microseismic sensors in boreholes under different conditions, and the operation is simple and quick;

[0029] 2) The present application solves the problem of the coupling device being easily affected by rock wall conditions due to the small contact area between the coupling device and the rock wall by making the overall outer supporting surface of the spiral slider contact the rock wall;

[0030] 3) The sensor in the present application is coupled to the rock wall through an integral spiral slider, and the stiffness of the wave propagation path in the coupling device is increased, thereby solving the problem of waveform distortion caused by the low stiffness of the coupling device.

[0031] The technical solution of the present application is further described below through specific embodiments:

[0032] A spiral recovery type large-area high-rigidity microseismic sensor coupling device includes three parts: a recoverable coupling fixture, an installation and recovery operating device, and a microseismic sensor. The recoverable coupling fixture includes a bottom fixing nail, a bottom limit flange, a threaded slider, and a top limit flange. The installation and recovery operating device includes a titanium alloy steel pipe, an extension sleeve, a fastening screw, and a hexagonal square head sleeve. In order to simultaneously achieve good coupling between the sensor and the rock wall and the recoverable function of the sensor, the device can change the degree of coupling between the sensor and the rock wall by rotating the rotating rod, thereby achieving the functions of installation and recovery. It is easy to operate and solves the problem of difficult fixation and recovery of sensors in boreholes.

[0033] Embodiment 1

[0034] The embodiments of the present invention are described in detail below with reference to the accompanying drawings and examples.

[0035] A spiral recovery type large-area high-rigidity microseismic sensor coupling device comprises two parts: a recoverable coupling fixing device and an installation recovery operating device.

[0036] The recyclable coupling fixture includes a spiral slider, i.e., the above-mentioned coupling connection support block. The spiral slider has a rotating thread on the inner side. The upper and lower parts of the spiral slider each have a limit buckle. The top limit flange and the bottom limit flange are connected to the spiral slider through the limit buckle of the spiral slider. By applying lubricant between the spiral slider and the top limit flange and between the spiral slider and the bottom limit flange, the spiral slider can slide horizontally along the radius between the top limit flange and the bottom limit flange. The four spiral sliders are respectively arranged in the corresponding limit holes in four different directions of the top limit flange and the bottom limit flange, and the upper and lower limit buckles of the spiral slider are closed. The upper and lower limit buckles of the spiral slider can ensure that the spiral slider slides within a certain range and the relative position of the top limit flange and the bottom limit flange does not change. The outer circle radius of the spiral slider is half of the farthest distance between the limit holes. The inner circle thread of the spiral slider is a concentric thread, and its center position is consistent with the center position of the outer circle arc. When the spiral slider slides to the innermost side of the limit, the arc angle of the spiral slider needs to be just closed.

[0037] The recyclable coupling fixture also includes a microseismic sensor. The microseismic sensor is in the shape of an inverted truncated cone, and the angle of its bevel is consistent with the angle of the inner thread bevel of the spiral slider. The outer side of the microseismic sensor has the same spiral texture as the spiral slider, and is in contact with the spiral slider through the thread. The top of the microseismic sensor is connected to the hexagonal square head by welding, and the welding position is the center of the truncated cone. The hexagonal square head includes a base with a regular hexagonal nut at the bottom, and the hexagonal square head also includes a guide cone at the top, the shape of the guide cone is a regular hexagonal pyramid, and the bottom of the guide cone coincides with the regular hexagonal nut-shaped base.

[0038] The recyclable coupling fixture also includes a top limiting flange and a bottom limiting flange. The limiting flange is annular and has four limiting holes in four orthogonal directions for fixing the limiting buckle of the spiral slider. The bottom surface of the bottom limiting flange is connected to the bottom fixing steel nail by welding.

[0039] The installation recovery control device includes a hexagonal square mouth sleeve. The bottom of the hexagonal square mouth sleeve is a regular hexagonal hexagonal square hole, and there is a guide cone hole for guiding. The size and shape of the hexagonal square hole and the guide cone hole are coupled with the shape and size of the hexagonal square head, and a wire outlet hole is left in the middle. During installation, the data line of the microseismic sensor is passed through the wire outlet of the hexagonal square hole, and the hexagonal square mouth sleeve is matched and fixed with the hexagonal square mouth on the sensor. A screw hole is opened on the top of the hexagonal square mouth sleeve 7.

[0040] The installation of the recovery control device also includes an extension sleeve. The extension sleeve is fixed to the upper end of the hexagonal square sleeve by a fastening screw, and the other end is fixed to the screw hole at the bottom of the titanium alloy steel pipe. The other end of the titanium alloy steel pipe is also provided with a screw hole, and the extension sleeve can be used to extend it.

[0041] The bottom hole installation and recycling process of the device of the present invention is as follows:

[0042] The first step is to pass the data line of the microseismic sensor through the hexagonal square mouth sleeve, and then through the hexagonal square mouth sleeve, the extension sleeve and the titanium alloy steel pipe in sequence, and then insert the hexagonal square mouth sleeve and the titanium alloy steel pipe into the extension sleeve from both ends respectively, and fix the two ends with fastening screws respectively;

[0043] Step 2: Align the hexagonal square head on the microseismic sensor with the hexagonal square head sleeve in the installation and recovery control device assembled in the first step and insert it. Turn the installation and recovery control device clockwise or counterclockwise to ensure the insertion is stable;

[0044] The third step is to insert the bottom limit buckles of the four spiral sliders into the four limit holes of the bottom limit flange in sequence, and then insert the top limit buckles of the four spiral sliders into the four limit holes of the top limit flange in sequence, and then add lubricant to the upper and lower surfaces of the four spiral sliders for lubrication, thereby completing the assembly of the recyclable coupling fixture;

[0045] Step 4: Use the installation recovery operating device assembled in the second step to hold the sensor, make the outer spiral surface of the microseismic sensor contact the inner spiral surface of the spiral slider, and fix the sensor on the recoverable coupling fixture by rotating the operating device;

[0046] Step 5: With the help of the installation recovery manipulator, insert the coupling fixture and the microseismic sensor into the sensor borehole. When reaching the bottom of the hole, insert the bottom fixing steel nail under the bottom limit flange into the bottom of the hole to ensure that the bottom can limit the rotation of the device.

[0047] The sixth step is to rotate the titanium alloy steel tube clockwise to make the microseismic sensor move downward along the thread, and at the same time squeeze the spiral slider outward until the spiral slider fits tightly against the side wall of the borehole, so that the sensor is firmly fixed at the bottom of the borehole; then directly pull out the installation and recovery operating device, and pass the data cable of the microseismic sensor through the middle of the titanium alloy steel tube, the extension sleeve and the hexagonal square head sleeve in turn.

[0048] Step 7: When recovering the microseismic sensor, pass the data line of the microseismic sensor through the hexagonal square head sleeve, the extension sleeve and the titanium alloy steel pipe in sequence, align the hexagonal square head on the microseismic sensor with the hexagonal square head sleeve in the installation recovery control device assembled in the first step, and then insert it;

[0049] Step 8: Rotate the recovery manipulator counterclockwise and pull the data line of the microseismic sensor outward until the coupling fixture is recovered from the coupling state to the semi-coupling state, and the microseismic sensor is displaced. Stop rotating the recovery manipulator and continue to pull the data line of the microseismic sensor outward until the microseismic sensor and the recyclable coupling fixture are withdrawn from the hole;

[0050] The ninth step is to directly pull out the installation recovery control device and pass the data line of the microseismic sensor through the titanium alloy steel tube, the extension sleeve and the hexagonal square head sleeve in sequence. Fix the coupling fixture with external force and continue to rotate the microseismic sensor counterclockwise until the microseismic sensor is separated from the spiral slider. At this time, the microseismic sensor recovery is completed.

[0051] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A device for installing microseismic sensors in rock engineering, comprising a microseismic sensor (1), characterized in that: The arrangement device further comprises a mounting structure, a support connection coupling assembly and a mounting adjustment assembly. The microseismic sensor (1) is movably arranged in the support connection coupling assembly via the mounting structure. During the ground condition monitoring process, the microseismic sensor is tightly coupled to the top of the wall of a monitoring hole drilled in the rock mass engineering via the support connection coupling assembly in cooperation with the mounting adjustment assembly and the mounting structure.

2. The installation structure for microseismic sensors in rock engineering according to claim 1, characterized in that: The microseismic sensor (1) is an inverted frustum-shaped structure, and a mounting cavity (2) adapted to the inverted frustum-shaped structure is provided on the supporting connection coupling component. The microseismic sensor (1) detachably arranged in the mounting cavity (2) is adjusted by the mounting adjustment component in cooperation with the mounting structure to determine its arrangement position in the mounting cavity (2).

3. The installation structure for microseismic sensors in rock engineering according to claim 1 or 2, characterized in that: The installation and adjustment assembly comprises an installation and recovery rod (3), a drive connector (4) and a sleeve transition piece group. The microseismic sensor (1) also comprises a data line. The drive connector (4) is fixedly mounted at the geometric center of the top of the microseismic sensor. The installation and recovery rod (3) is connected to the drive connector (4) through the sleeve transition piece group. The data line passing through the drive connector (4) extends upward from the monitoring hole through the installation and recovery rod (3) in cooperation with the sleeve transition piece group.

4. The installation structure for microseismic sensors in rock engineering according to claim 3 is characterized in that: The driving connecting head (4) is a hexagonal square head, and the sleeve transition piece group includes a hexagonal square head sleeve (5), an extension sleeve (6) and a fastening screw (12). Two or more groups of connection holes are symmetrically arranged at the lower end of the installation recovery rod (3), the upper end of the hexagonal square head sleeve (5) and the corresponding positions of the extension sleeve (6). The installation recovery rod (3) and the hexagonal square head sleeve (5) are connected as a whole through the extension sleeve (6) with the cooperation of the fastening screw (12), and the inner hole shape of the lower connection end of the hexagonal square head is adapted to the circumferential shape of the hexagonal square head; during the installation and recovery process of the microseismic sensor (1), the hexagonal square head sleeve (5) is sleeved on the hexagonal square head.

5. The installation structure for microseismic sensors in rock engineering according to claim 4, characterized in that: The supporting connection coupling assembly comprises a fixed installation limit frame and at least three groups of coupling connection support blocks (7), each group of coupling connection support blocks (7) being arranged on the fixed installation limit frame so as to be reciprocatingly movable in the radial direction, each group of coupling connection support blocks (7) being movably connected as a whole by the fixed installation limit frame forming a cone-shaped installation cavity (2) therein, and the microseismic sensor (1) being movably arranged in the installation cavity (2) through the installation structure; during the installation process of the microseismic sensor (1), the installation recovery rod (3) drives the microseismic sensor (1) to move axially through the driving connector (4), thereby driving each group of coupling connection support blocks (7) to move radially and then be tightly coupled with the top of the wall of the corresponding monitoring hole.

6. The installation structure for microseismic sensors in rock engineering according to claim 5, characterized in that: The mounting structure is a mutually adaptable thread arranged on the mounting cavity (2) and the inverted frustum-shaped structure of the microseismic sensor (1).

7. The installation structure for microseismic sensors in rock engineering according to claim 6, characterized in that: The coupling connection support blocks (7) are four in number, and the four coupling connection support blocks (7) are reciprocally movable in the radial direction through a fixed installation limit frame to form a cylindrical coupling body with an adjustable outer diameter, and the frustum-shaped installation cavity (2) is located inside the cylindrical coupling body; a properly arranged microseismic sensor (1) is threadedly connected to the installation cavity (2), and the outer wall of the cylindrical coupling body is tightly coupled to the hole wall of the corresponding monitoring hole.

8. The installation structure for microseismic sensors in rock engineering according to claim 7, characterized in that: The fixed installation limit frame comprises a top limit flange (8), a bottom limit flange (9) and a buffer reset component group. The top limit flange (8) and the bottom limit flange (9) are respectively provided with strip-shaped installation holes (10) whose positions are adapted to each other. Each strip-shaped installation hole extends radially along the top limit flange (8) or the bottom limit flange (9). A sliding connection head is respectively provided at the upper end and the lower end of each group of coupling connection support blocks (7). The upper and lower ends of each group of coupling connection support blocks are respectively connected to the corresponding sliding connection head and the corresponding strip-shaped installation hole (10). With the cooperation of the buffer reset component group, the support connection coupling assembly is formed by being retractable in the radial direction.

9. The installation structure for microseismic sensors in rock engineering according to claim 8, characterized in that: The buffer reset component group comprises a plurality of tube springs whose number is equal to the number of the strip-shaped mounting holes (10), and each tube spring is connected between a corresponding sliding connector and a hole wall of a corresponding strip-shaped mounting hole.

10. The installation structure for microseismic sensors in rock engineering according to claim 9, characterized in that: At least three bottom fixing steel nails (11) are arranged on the lower end surface of the bottom limiting flange (9), and each bottom fixing steel nail (11) is evenly distributed along the circumference of the bottom limiting flange (9).

Images