CN112230287B - Combined structure-based recyclable installation cover body and method for microseismic sensor - Google Patents
Combined structure-based recyclable installation cover body and method for microseismic sensor Download PDFInfo
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- CN112230287B CN112230287B CN202011321504.5A CN202011321504A CN112230287B CN 112230287 B CN112230287 B CN 112230287B CN 202011321504 A CN202011321504 A CN 202011321504A CN 112230287 B CN112230287 B CN 112230287B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/40—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging
- G01V1/52—Structural details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/40—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging
- G01V1/52—Structural details
- G01V2001/526—Mounting of transducers
Abstract
The invention discloses a recoverable installation cover body of a microseismic sensor based on a combined structure and a method, belonging to the technical field of underground coal mine monitoring in mining engineering.A device comprises an installation stay bar unit, a sensor cover body unit and a support combined unit; the device disclosed by the invention is used for installing and recovering the microseismic sensor in the inclined drilling hole, the current sensor installation process is optimized by installing the combination of the stay bar and the microseismic sensor cover body and applying a mechanical method of rotation-push combination, the installation efficiency is improved, the recovery and reutilization of the sensor are realized, and the cost is further reduced.
Description
Technical Field
The invention belongs to the technical field of underground coal mine monitoring in mining engineering, and particularly relates to a recyclable installation cover body of a microseismic sensor based on a combined structure and a method.
Background
The underground monitoring technology of the coal mine is in a vigorous development stage, and various field monitoring technologies and equipment are put into use. With the continuous improvement of the micro-seismic monitoring technology in recent years, the technology becomes one of the important technologies for monitoring and forecasting the rock engineering disasters, and particularly, the micro-seismic monitoring work under coal mines starts to be widely applied under the requirement of the coal prisoner in China. The installation of the sensor used in the microseismic monitoring is an important link of the microseismic monitoring technology, and the installation efficiency of the microseismic sensor, the actual use efficiency of the sensor and the future recovery of the sensor are all important to the effective acquisition of the microseismic signal and the investment cost.
At present, the installation of sensors in engineering application is mainly divided into an external hanging type and an embedded type, and the micro-seismic sensors are installed in an embedded type under a coal mine, namely, drilled holes with the length of 2-3 m are drilled on the non-mining side walls of a transportation roadway and a return airway in a production mining area, and then the micro-seismic sensors are embedded into the drilled holes.
The installation of sensor in the pit fixes multi-purpose resin anchoring agent in the present stage and fixes the sensor in the inclined borehole, and this kind of installation method is although monitoring effect is better, and the cost is lower, but the installation effectiveness is low, often because the residual coal ash cinder in the borehole can't reach once only firm, wastes time and energy, and because resin anchoring power adhesion is very strong, if be difficult to retrieve after firm reuse, the sensor is buried in the coal wall or the cliff of monitoring stope permanently under most circumstances. With the advance of the working face of the stope, once the sensor has a problem, the sensor cannot be overhauled and replaced, and the monitoring effect is further influenced; under the installation method, if the integrity of the coal wall or the rock wall is good, the recovery work is smooth, but the recovery of the deep hole installation of the fractured rock mass is almost impossible; in addition, some installation methods are based on novel precision auxiliary equipment, but many auxiliary equipment are time-consuming and labor-consuming, and the precision equipment is often limited in operability because the coal ash which is not washed clean in the drill hole is confined. Therefore, improvements to existing mounting techniques are needed.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a microseismic sensor recyclable installation cover body based on a combined structure and a method, wherein a microseismic sensor is installed and recovered in an inclined drilling hole, the installation process of the current sensor is optimized by installing a stay bar and a microseismic sensor cover body combination and applying a mechanical method of rotation-push combination, so that the installation efficiency is improved, the recovery and reutilization of the sensor are realized, and the cost is further reduced. The specific technical scheme is as follows:
a micro-seismic sensor recoverable installation cover based on a combined structure comprises an installation stay bar unit, a sensor cover unit and a support combined unit;
the installation supporting rod unit comprises an installation supporting rod shell 1, a rocker 2, a duplex roller 3, a transmission belt 4, a transmission wheel 5, a chain I6, a duplex transmission gear I7, a sleeve 8, an adjusting spring 9 and a threading opening 10;
the front end of the installation stay bar shell 1 is provided with a duplex roller 3, and the tail end of the installation stay bar shell 1 is provided with a sleeve 8; the duplex roller 3 and the transmission wheel 5 are fixed in a semi-hollow cavity of the installation support rod shell 1 through a fixing rod and are connected through the transmission belt 4, the chain I6 and the tail end of the transmission belt 4 form a vertical angle and are connected with two duplex transmission gears I7, and the duplex transmission gears I7 are partially exposed out of the installation support rod shell 1; the rocker 2 is linked with the head end of a transmission belt 4 through a duplex roller 3, the tail end of the transmission belt 4 is linked with the middle part of a chain I6 through a transmission wheel 5, and two ends of the chain I6 are respectively linked with two duplex transmission gears I7; the threading opening 10 is arranged at the position, close to the duplex roller 3, of the stay bar housing 1; the tail part of the installation stay bar shell 1 is provided with an adjusting spring 9;
the tail end of the sleeve 8 is buckled with the tail connecting cable of the microseismic sensor 24; the threading opening 10 is used for threading a connecting cable of the microseismic sensor 24, and the connecting cable of the microseismic sensor 24 passes through the half-hollow cavity of the installation stay bar shell 1 through the sleeve 8 and penetrates out of the threading opening 10 to be connected with the acquisition station;
the diameter of the duplex transmission gear I7 is 20mm, and the diameter of the threading opening 10 is 20 mm-30 mm;
the mounting support rod shell 1 is integrally a thin steel shell, a half-hollow cavity is arranged inside the mounting support rod shell, the integral length is 2-3 m, and the position of the adjusting spring 9 is a non-full-coverage steel shell; the chain I6 is made of full alloy steel;
the sensor cover body unit comprises a sensor cover body shell 11, two duplex transmission gears II 12 and III 13 which are symmetrical on two sides, a chain II 14, two transmission rods 16 and gear rails 17 which are symmetrical on two sides, and sliding rail ports 15 which are symmetrical on two sides;
two duplex transmission gears II 12 and two duplex transmission gears III 13 are symmetrically distributed and fixed in the inner cavity of the sensor cover shell 11, the duplex transmission gears II 12 and the duplex transmission gears III 13 are in transmission connection through a chain II 14, part of gear teeth of the duplex transmission gears II 12 are exposed out of the sensor cover shell 11, and the exposed part of the duplex transmission gears II 12 is meshed with the duplex transmission gear I7; the sensor cover comprises a sensor cover shell 11, a transmission rod 16, a gear rail 17, a duplex transmission gear III 13, a transmission gear cover shell 15, a transmission gear cover shell and a transmission gear cover shell, wherein the two sides of the sensor cover shell 11 are respectively provided with an opening as a sliding rail opening 15, the transmission rod 16 and;
a gap of a sensor cover shell 11 generated by the exposed part of the duplex transmission gear II 12 is 20 mm; the sliding track crossing 15 is 10mm, and the sliding track crossing 15 is subjected to smoothing treatment; the track length of the gear track 17 is 50-55 mm;
the sensor cover body shell 11 is made of aluminum alloy materials or steel materials, and the depth length of the sensor cover body shell 11 is twice the length of the microseismic sensor 24; the diameter of the inner cavity of the sensor cover shell 11 is 20-25 mm longer than the diameter of the microseismic sensor 24; the cross section of the sensor housing shell 11 is circular, the wall body is of a hollow structure, and the hollow thickness of the wall body on one side is 70-100 mm; the inner cavity of the sensor housing shell 11 has a receiving function for the transmission rod 16;
the chain II 14 is made of full alloy steel;
the supporting combination unit comprises two groups of hollow rollers 18, a slidable track 19, a track side rail 20, a rotatable interface 21, a grabbing arm 22 and grabbing teeth 23 which are symmetrically arranged on two sides of a sensor cover body shell 11;
the rotatable interface 21 is arranged in the middle of the outer side of the sensor cover body shell 11; the hollow roller 18 is arranged at the outer end of the conveying rod 16 and fixedly connected with the conveying rod 16 into a whole without relative sliding; the slidable track 19 passes through the hollow roller 18 and is connected to the rotatable interface 21; a rail side rail 20 is arranged on the slidable rail 19; the end of the slidable track 19 is connected with a gripping arm 22, and the gripping arm 22 is connected with a gripping tooth 23;
the rotatable interface 21 drives the grabbing arm 22 to expand and contract, and the grabbing arm 22 swings by 0-45 degrees; the rail side rail 20 limits the sliding distance of the hollow roller 18 on the slidable rail 19;
the length of the slidable track 19 is 80 mm;
the sub-teeth on the grabbing teeth 23 are in a fixed shape and do not rotate relatively, and the end parts of the grabbing teeth 23 are sharpened;
the gripping arm 22, the gripping teeth 23 and the slidable track 19 are made of steel materials;
the use method of the recoverable installation cover body of the microseismic sensor based on the combined structure comprises the following steps:
step 1: according to actual conditions and design requirements on site, drilling inclined drilled holes of 1.5-2.0 m at specific positions on coal walls or rock walls on two sides of an underground roadway, and flushing the drilled holes with water flow at a certain pressure until no coal chips or rock chips exist in the holes;
step 2: embedding a microseismic sensor 24 into a sensor cover shell 11, then enabling a tail connecting cable of the microseismic sensor 24 to pass through an opening of a sleeve 8 and penetrate out of a threading port 10 through an inner cavity of an installation stay rod shell 1, adjusting an installation stay rod unit to enable the sleeve 8 to be buckled at the tail of the sensor, drawing the connecting cable of the microseismic sensor 24 to be in a tightened state, pushing the installation stay rod unit into an inclined drill hole, ensuring that grabbing arms 22 are symmetrically distributed at two sides in the pushing process, sending the whole sensor cover body unit and a screw rod of the microseismic sensor 24 to a set position, and enabling the grabbing arms 22 to be in a contracted state in the pushing process, wherein an included angle formed by the grabbing arms and the sensor cover shell 11 is less;
and step 3: the rocker 2 is rocked clockwise to drive the duplex roller 3 to rotate, the transmission belt 4 drives the transmission wheel 5 to rotate, the transmission wheel 5 keeps the rotating direction of the rocker 2, the transmission wheel 5 enables the two duplex transmission gears I7 to rotate simultaneously through the chain I6, and the stay bar unit is arranged by pushing towards the hole and swinging left and right in a small amplitude to change the deformation of the adjusting spring 9, so that the occlusion and power transmission of the two groups of duplex transmission gears I7 and the duplex transmission gear II 12 are completed;
and 4, step 4: the duplex transmission gear II 12 rotates anticlockwise, the duplex transmission gear III 13 is driven to rotate through the chain II 14, the gear rail 17 is further meshed and pushed, the transmission rod 16 is pushed out by means of meshing action of the gear rail 17, the hollow roller 18 is always fixed at the end of the transmission rod 16, the grabbing arm 22 is pushed outwards at the same time until the grabbing teeth 23 are stably clamped against the inner wall of the drilled hole, the displacement of the transmission rod 16 is the movement distance of the hollow roller 18 on the slidable track 19, the movement range is controlled by the track side rail 20, and the hollow roller 18 is subjected to smoothing treatment;
and 5: withdrawing the installation stay bar unit, only leaving the microseismic sensor 24 and the sensor cover body unit in the inclined drill hole, and completing the connection work of the connecting cable of the microseismic sensor 24 and the underground acquisition instrument;
step 6: aiming at the recovery work of the microseismic sensor 24, the connecting cable of the microseismic sensor 24 needs to pass through the installation supporting rod shell 1 again, the installation supporting rod unit is pushed to enable the sleeve 8 to be buckled at the tail part of the microseismic sensor 24, the rocker 2 is rotated anticlockwise at the moment, the mechanical motion of the whole equipment is opposite to the installation process, the contraction of the grabbing arm 22 is completed, and the whole recovery work of the microseismic sensor 24 and the sensor cover body unit is completed through the traction force of the connecting cable of the microseismic sensor 24.
Compared with the prior art, the recyclable installation cover body and the method of the microseismic sensor based on the combined structure have the following beneficial effects that:
firstly, the invention adopts the gear linkage effect and can rapidly finish the installation and recovery work of the microseismic sensor.
Secondly, the sensor cover body unit is reserved in the inclined drill hole, so that the microseismic sensor can be protected;
thirdly, the grabbing arm and the grabbing teeth of the supporting combined unit can enhance the occlusion strength and stability with the coal rock wall, the transmission chain is made of full alloy steel, the transmission is stable and firm, and the working efficiency and the working stability of installation and recovery of the micro-seismic sensor are improved.
Fourthly, the device is simple and easy to install, the operation process is convenient and fast, the device can be applied to the drill holes with different apertures, the installation efficiency and the success rate are greatly improved, the recycling of the sensor is realized, and the cost is further reduced.
Drawings
FIG. 1 is a schematic view of a recoverable mounting cover for a microseismic sensor based on a composite structure according to the present invention;
FIG. 2 is a side view of a mounting brace unit of a recoverable mounting cover for a microseismic sensor based on a composite structure according to the present invention;
FIG. 3 is a top view of a sensor cover unit and a supporting assembly unit of a microseismic sensor recoverable mounting cover based on a combined structure according to the present invention;
FIG. 4 is a schematic view of the installation of a recoverable installation cover body of a microseismic sensor based on a combined structure in a borehole according to the present invention;
in the figure: 1-installing a support rod shell, 2-a rocker, 3-a duplex roller, 4-a transmission belt, 5-a transmission wheel, 6-a chain I, 7-a duplex transmission gear I, 8-a sleeve, 9-an adjusting spring, 10-a threading opening, 11-a sensor cover shell, 12-a duplex transmission gear II, 13-a duplex transmission gear III, 14-a chain II, 15-a sliding rail opening, 16-a transmission rod, 17-a gear rail, 18-a hollow roller, 19-a slidable rail, 20-a rail side rail, 21-a rotatable interface, 22-a grabbing arm, 23-a grabbing tooth and 24-a microseismic sensor.
Detailed Description
The invention will be further described with reference to specific embodiments and figures 1 to 4, but the invention is not limited to these embodiments.
As shown in fig. 1, a recoverable installation cover body of a microseismic sensor based on a combined structure comprises an installation stay bar unit, a sensor cover body unit and a support combined unit;
the installation supporting rod unit comprises an installation supporting rod shell 1, a rocker 2, a duplex roller 3, a transmission belt 4, a transmission wheel 5, a chain I6, a duplex transmission gear I7, a sleeve 8, an adjusting spring 9 and a threading opening 10;
the front end of the installation stay bar shell 1 is provided with a duplex roller 3, and the tail end of the installation stay bar shell 1 is provided with a sleeve 8; the duplex roller 3 and the transmission wheel 5 are fixed in a semi-hollow cavity of the installation support rod shell 1 through a fixing rod and are connected through the transmission belt 4, the chain I6 and the tail end of the transmission belt 4 form a vertical angle and are connected with two duplex transmission gears I7, and the duplex transmission gears I7 are partially exposed out of the installation support rod shell 1; the rocker 2 is linked with the head end of a transmission belt 4 through a duplex roller 3, the tail end of the transmission belt 4 is linked with the middle part of a chain I6 through a transmission wheel 5, and two ends of the chain I6 are respectively linked with two duplex transmission gears I7; the threading opening 10 is arranged at the position, close to the duplex roller 3, of the stay bar housing 1; the tail part of the installation stay bar shell 1 is provided with an adjusting spring 9;
the tail end of the sleeve 8 is buckled with the tail connecting cable of the microseismic sensor 24; the threading opening 10 is used for threading a connecting cable of the microseismic sensor 24, and the connecting cable of the microseismic sensor 24 passes through the half-hollow cavity of the installation stay bar shell 1 through the sleeve 8 and penetrates out of the threading opening 10 to be connected with the acquisition station;
the diameter of the duplex transmission gear I7 is 20mm, and the diameter of the threading opening 10 is 20 mm-30 mm;
the mounting support rod shell 1 is integrally a thin steel shell, a half-hollow cavity is arranged inside the mounting support rod shell, the integral length is 2-3 m, and the position of the adjusting spring 9 is a non-full-coverage steel shell; the chain I6 is made of full alloy steel;
the periphery of the installation support rod shell 1 is not completely covered, the plane view of the installation support rod shell is in a symmetrical layout, the side view is in an asymmetrical structure in the vertical direction, the side view of the installation support rod unit is shown in figure 2, and the sleeve 8 is in a low position, so that a connecting cable of the micro-seismic sensor 24 can smoothly pass through the installation support rod unit, and the installation support rod unit and the transmission belt 4 are not mutually influenced;
the sensor cover body unit comprises a sensor cover body shell 11, two duplex transmission gears II 12 and III 13 which are symmetrical on two sides, a chain II 14, two transmission rods 16 and gear rails 17 which are symmetrical on two sides, and sliding rail ports 15 which are symmetrical on two sides;
two duplex transmission gears II 12 and two duplex transmission gears III 13 are symmetrically distributed and fixed in the inner cavity of the sensor cover shell 11, the duplex transmission gears II 12 and the duplex transmission gears III 13 are in transmission connection through a chain II 14, part of gear teeth of the duplex transmission gears II 12 are exposed out of the sensor cover shell 11, and the exposed part of the duplex transmission gears II 12 is meshed with the duplex transmission gear I7; the sensor cover comprises a sensor cover shell 11, a transmission rod 16, a gear rail 17, a duplex transmission gear III 13, a transmission gear cover shell 15, a transmission gear cover shell and a transmission gear cover shell, wherein the two sides of the sensor cover shell 11 are respectively provided with an opening as a sliding rail opening 15, the transmission rod 16 and;
a gap of a sensor cover shell 11 generated by the exposed part of the duplex transmission gear II 12 is 20 mm; the sliding track crossing 15 is 10mm, and the sliding track crossing 15 is subjected to smoothing treatment; the track length of the gear track 17 is 50-55 mm;
the sensor cover body shell 11 is made of aluminum alloy, and the depth length of the sensor cover body shell 11 is twice that of the microseismic sensor 24 and is 200 mm; the diameter of the inner cavity of the sensor cover shell 11 is 20mm longer than that of the microseismic sensor 24, and is 60 mm; the cross section of the sensor cover shell 11 is circular, the wall body is of a hollow structure, and the hollow thickness of the wall body on one side is 70-100 mm, as shown in FIG. 3; the inner cavity of the sensor housing shell 11 has a receiving function for the transmission rod 16;
the chain II 14 is made of full alloy steel;
the supporting combination unit comprises two groups of hollow rollers 18, a slidable track 19, a track side rail 20, a rotatable interface 21, a grabbing arm 22 and grabbing teeth 23 which are symmetrically arranged on two sides of a sensor cover body shell 11;
the rotatable interface 21 is arranged in the middle of the outer side of the sensor cover body shell 11; the hollow roller 18 is arranged at the outer end of the conveying rod 16 and fixedly connected with the conveying rod 16 into a whole without relative sliding; the slidable track 19 passes through the hollow roller 18 and is connected to the rotatable interface 21; a rail side rail 20 is arranged on the slidable rail 19; the end of the slidable track 19 is connected with a gripping arm 22, and the gripping arm 22 is connected with a gripping tooth 23;
the rotatable interface 21 drives the grabbing arm 22 to expand and contract, and the grabbing arm 22 swings by 0-45 degrees; the rail side rail 20 limits the sliding distance of the hollow roller 18 on the slidable rail 19;
the length of the slidable track 19 is 80 mm;
the sub-teeth on the grabbing teeth 23 are in a fixed shape and do not rotate relatively, and the end parts of the grabbing teeth 23 are sharpened;
the gripping arm 22, the gripping teeth 23 and the slidable track 19 are made of steel materials;
as shown in fig. 1 and 4, the method for using the recoverable mounting cover body of the microseismic sensor based on the combined structure comprises the following steps:
step 1: according to actual conditions and design requirements on site, drilling inclined drilled holes of 1.5-2.0 m at specific positions on coal walls or rock walls on two sides of an underground roadway, and flushing the drilled holes with water flow at a certain pressure until no coal chips or rock chips exist in the holes;
step 2: embedding a microseismic sensor 24 into a sensor cover shell 11, then enabling a tail connecting cable of the microseismic sensor 24 to pass through an opening of a sleeve 8 and penetrate out of a threading port 10 through an inner cavity of an installation stay rod shell 1, adjusting an installation stay rod unit to enable the sleeve 8 to be buckled at the tail of the sensor, drawing the connecting cable of the microseismic sensor 24 to be in a tightened state, pushing the installation stay rod unit into an inclined drill hole, ensuring that grabbing arms 22 are symmetrically distributed at two sides in the pushing process, sending the whole sensor cover body unit and a screw rod of the microseismic sensor 24 to a set position, and enabling the grabbing arms 22 to be in a contracted state in the pushing process, wherein an included angle formed by the grabbing arms and the sensor cover shell 11 is less;
and step 3: the rocker 2 is rocked clockwise to drive the duplex roller 3 to rotate, the transmission belt 4 drives the transmission wheel 5 to rotate, the transmission wheel 5 keeps the rotating direction of the rocker 2, the transmission wheel 5 enables the two duplex transmission gears I7 to rotate simultaneously through the chain I6, and the stay bar unit is arranged by pushing towards the hole and swinging left and right in a small amplitude to change the deformation of the adjusting spring 9, so that the occlusion and power transmission of the two groups of duplex transmission gears I7 and the duplex transmission gear II 12 are completed;
and 4, step 4: the duplex transmission gear II 12 rotates anticlockwise, the duplex transmission gear III 13 is driven to rotate through the chain II 14, the gear rail 17 is further meshed and pushed, the transmission rod 16 is pushed out by means of meshing action of the gear rail 17, the hollow roller 18 is always fixed at the end of the transmission rod 16, the grabbing arm 22 is pushed outwards at the same time until the grabbing teeth 23 are stably clamped against the inner wall of the drilled hole, the displacement of the transmission rod 16 is the movement distance of the hollow roller 18 on the slidable track 19, the movement range is controlled by the track side rail 20, and the hollow roller 18 is subjected to smoothing treatment;
and 5: withdrawing the installation stay bar unit, only leaving the microseismic sensor 24 and the sensor cover body unit in the inclined drill hole, and completing the connection work of the connecting cable of the microseismic sensor 24 and the underground acquisition instrument;
step 6: aiming at the recovery work of the microseismic sensor 24, the connecting cable of the microseismic sensor 24 needs to pass through the installation supporting rod shell 1 again, the installation supporting rod unit is pushed to enable the sleeve 8 to be buckled at the tail part of the microseismic sensor 24, the rocker 2 is rotated anticlockwise at the moment, the mechanical motion of the whole equipment is opposite to the installation process, the contraction of the grabbing arm 22 is completed, and the whole recovery work of the microseismic sensor 24 and the sensor cover body unit is completed through the traction force of the connecting cable of the microseismic sensor 24.
Claims (6)
1. A microseismic sensor recoverable installation cover based on a combined structure is characterized by comprising an installation stay bar unit, a sensor cover unit and a support combined unit;
the installation supporting rod unit comprises an installation supporting rod shell (1), a rocker (2), a duplex roller (3), a transmission belt (4), a transmission wheel (5), a chain I (6), a duplex transmission gear I (7), a sleeve (8), an adjusting spring (9) and a threading opening (10); the front end of the installation stay bar shell (1) is provided with a duplex roller (3), and the tail end of the installation stay bar shell (1) is provided with a sleeve (8); the duplex roller (3) and the transmission wheel (5) are fixed in a semi-hollow cavity of the installation support rod shell (1) through a fixing rod and are connected through a transmission belt (4), the chain I (6) and the tail end of the transmission belt (4) form a vertical angle and are connected with two duplex transmission gears I (7), and the duplex transmission gears I (7) are partially exposed out of the installation support rod shell (1); the rocker (2) is linked with the head end of the transmission belt (4) through the duplex roller (3), the tail end of the transmission belt (4) is linked with the middle part of the chain I (6) through the transmission wheel (5), and two ends of the chain I (6) are respectively linked with the two duplex transmission gears I (7); the threading opening (10) is arranged at the position, close to the duplex roller (3), of the installation stay bar shell (1); the tail part of the mounting support rod shell (1) is provided with an adjusting spring (9);
the sensor cover body unit comprises a sensor cover body shell (11), two duplex transmission gears II (12) and a duplex transmission gear III (13) which are symmetrical on two sides, a chain II (14), two transmission rods (16) and gear rails (17) which are symmetrical on two sides, and sliding rail ports (15) which are symmetrical on two sides; two duplex transmission gears II (12) and two duplex transmission gears III (13) are symmetrically distributed and fixed in an inner cavity of a sensor cover shell (11), the duplex transmission gears II (12) and the duplex transmission gears III (13) are in transmission connection through a chain II (14), part of gear teeth of the duplex transmission gears II (12) are exposed out of the sensor cover shell (11), and the exposed part of the duplex transmission gears II (12) is meshed with the duplex transmission gear I (7); openings are respectively arranged on two sides of the sensor cover shell (11) and used as sliding rail crossings (15), the transmission rod (16) and the sliding rail crossings (15) are vertically arranged, the gear rail (17) is fixed on the transmission rod (16), and the gear rail (17) is meshed with the duplex transmission gear III (13);
the supporting combination unit comprises a sensor cover shell (11), two groups of hollow rollers (18) which are symmetrical on two sides, a slidable track (19), a track side rail (20), a rotatable interface (21), a grabbing arm (22) and grabbing teeth (23); the rotatable interface (21) is arranged in the middle of the outer side of the sensor housing shell (11); the hollow roller (18) is arranged at the outer end of the conveying rod (16) and is fixedly connected with the conveying rod (16) into a whole without relative sliding; the slidable track (19) passes through the hollow roller (18) and is connected with the rotatable interface (21); a rail side rail (20) is arranged on the slidable rail (19); the end part of the slidable track (19) is connected with a grabbing arm (22), and the grabbing arm (22) is connected with a grabbing tooth (23);
the tail end of the sleeve (8) is buckled at the tail connecting cable of the microseismic sensor (24); the threading opening (10) is used for threading a connecting cable of the microseismic sensor (24), and the connecting cable of the microseismic sensor (24) passes through the semi-hollow cavity of the installation stay bar shell (1) through the sleeve (8) and penetrates out of the threading opening (10) to be connected with the acquisition station;
the rotatable interface (21) drives the grabbing arm (22) to expand and contract, and the grabbing arm (22) swings by 0-45 degrees; the rail side rail (20) limits the sliding distance of the hollow roller (18) on the slidable rail (19);
the sub-teeth on the grabbing teeth (23) are in a fixed shape and cannot rotate relatively, and the end parts of the grabbing teeth (23) are sharpened;
the chain I (6) is made of full alloy steel; the chain II (14) is made of full alloy steel; the gripping arm (22), the gripping teeth (23) and the slidable track (19) are all made of steel materials.
2. The recoverable installation cover body for the microseismic sensor based on the combined structure as claimed in claim 1, wherein the diameter of the duplex transmission gear I (7) is 20mm, and the diameter of the threading opening (10) is 20 mm-30 mm; the length of the slidable track (19) is 80 mm.
3. The recoverable installation cover body of the microseismic sensor based on the combined structure as claimed in claim 1, wherein the installation stay bar shell (1) is a thin steel shell, the interior of the installation stay bar shell is a semi-hollow cavity, the overall length of the installation stay bar shell is 2-3 m, and the part of the adjusting spring (9) is a non-full-covering steel shell.
4. The recoverable mounting cover body for the microseismic sensor based on the combined structure as claimed in claim 1, wherein the gap of the sensor cover shell (11) generated by the exposed part of the duplex transmission gear II (12) is 20 mm; the sliding track port (15) is 10mm, and the sliding track port (15) is subjected to smoothing treatment; the track length of the gear track (17) is 50-55 mm.
5. The recoverable mounting cover for a microseismic sensor based on a combined structure as claimed in claim 1, wherein the sensor cover shell (11) is made of aluminum alloy or steel, and the depth of the sensor cover shell (11) is twice the length of the microseismic sensor (24); the diameter of the inner cavity of the sensor cover shell (11) is 20-25 mm longer than that of the microseismic sensor (24); the cross section of the shell (11) of the sensor cover is circular, the wall body is of a hollow structure, and the hollow thickness of the wall body on one side is 70-100 mm; the inner cavity of the sensor housing shell (11) has a receiving function for the transmission rod (16).
6. A method of using the composite structure based microseismic sensor recoverable mounting cover of claim 1 comprising the steps of:
step 1: according to actual conditions and design requirements on site, drilling inclined drilled holes of 1.5-2.0 m at specific positions on coal walls or rock walls on two sides of an underground roadway, and flushing the drilled holes with water flow at a certain pressure until no coal chips or rock chips exist in the holes;
step 2: embedding a microseismic sensor (24) into a sensor cover shell (11), then enabling a tail connecting cable of the microseismic sensor (24) to pass through an opening of a sleeve (8) and penetrate out of a threading port (10) through an inner cavity of an installation stay bar shell (1), adjusting the installation stay bar unit to enable the sleeve (8) to be buckled at the tail of the sensor, drawing the connecting cable of the microseismic sensor (24) to be in a tightened state, pushing the installation stay bar unit into an inclined drill hole, ensuring that grabbing arms (22) are symmetrically distributed at two sides in the pushing process, sending the whole sensor cover unit and a screw of the microseismic sensor (24) to a set position, wherein the grabbing arms (22) are in a contracted state in the pushing process, and an included angle formed by the grabbing arms and the sensor cover shell (11) is less than 10 degrees;
and step 3: the rocker (2) is rocked clockwise to drive the duplex roller (3) to rotate, the transmission belt (4) drives the transmission wheel (5) to rotate, the transmission wheel (5) keeps the rotating direction of the rocker (2), the transmission wheel (5) enables the two duplex transmission gears I (7) to simultaneously rotate through the chain I (6), and the strut units are arranged by pushing the holes and swinging left and right by a small amplitude to change the deformation of the adjusting spring (9), so that the meshing and power transmission of the two groups of duplex transmission gears I (7) and the duplex transmission gear II (12) are completed;
and 4, step 4: the duplex transmission gear II (12) rotates anticlockwise, the duplex transmission gear III (13) is driven to rotate through the chain II (14), the duplex transmission gear II is further meshed with and pushes the gear rail (17), the transmission rod (16) is pushed out by means of meshing effect of the gear rail (17), the hollow roller (18) is always fixed at the end part of the transmission rod (16), meanwhile, the grabbing arm (22) is pushed outwards until the grabbing tooth (23) is stably clamped on the inner wall of a drilled hole, displacement of the transmission rod (16) is the movement distance of the hollow roller (18) on the slidable track (19), the movement range is controlled by the track side rail (20), and the hollow roller (18) is subjected to smoothing treatment;
and 5: withdrawing the installation brace rod unit, only leaving the microseismic sensor (24) and the sensor cover body unit in the inclined drill hole, and completing the connection work of a connecting cable of the microseismic sensor (24) and the underground acquisition instrument;
step 6: to the recovery work of microseism sensor (24), need pass installation vaulting pole shell (1) once more with the connection cable of microseism sensor (24), propelling movement installation vaulting pole unit makes sleeve pipe (8) buckle at the afterbody of microseism sensor (24), anticlockwise rotation rocker (2) this moment, whole equipment mechanical motion is opposite with the installation, accomplish the shrink of grabbing arm (22), accomplish microseism sensor (24) and the whole recovery work of sensor cover body unit through the connection cable traction force of microseism sensor (24).
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| CN103176207A (en) * | 2013-02-26 | 2013-06-26 | 中国矿业大学(北京) | Micro-seismic monitoring system and method for mounting same |
| CN103556646A (en) * | 2013-09-29 | 2014-02-05 | 河北钢铁集团矿业有限公司 | Method for forming water shutoff walls in sand and gravel layer |
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| CN109713615A (en) * | 2019-03-14 | 2019-05-03 | 东北大学 | A kind of micro seismic monitoring route automatic laying device and application method based on TBM |
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| CN101950035B (en) * | 2010-09-14 | 2012-09-05 | 北京安科兴业科技有限公司 | Rock burst and mine earthquake real-time monitoring system and method |
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| US9091155B2 (en) * | 2013-07-10 | 2015-07-28 | Halliburton Energy Services, Inc. | Reducing disturbance during fiber optic sensing |
| CN103556646A (en) * | 2013-09-29 | 2014-02-05 | 河北钢铁集团矿业有限公司 | Method for forming water shutoff walls in sand and gravel layer |
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