CN115790941B - A monitoring system for rock burst - Google Patents
A monitoring system for rock burst Download PDFInfo
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- CN115790941B CN115790941B CN202211638571.9A CN202211638571A CN115790941B CN 115790941 B CN115790941 B CN 115790941B CN 202211638571 A CN202211638571 A CN 202211638571A CN 115790941 B CN115790941 B CN 115790941B
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- bearing plate
- outer sleeve
- push rod
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- end cover
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- 239000011435 rock Substances 0.000 title claims abstract description 29
- 238000012544 monitoring process Methods 0.000 title claims abstract description 22
- 238000005553 drilling Methods 0.000 claims description 54
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 210000000078 claw Anatomy 0.000 claims description 9
- 238000010030 laminating Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 abstract 2
- 230000037431 insertion Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
一种冲击地压的监测系统，其特征是：包括钻孔应力计，以及钻孔应力计驱动装置；向钻孔内安装钻孔应力计时，将外套筒的一端套设在左端盖的左端，所述插孔Ⅰ与插孔Ⅱ通过插杆连接，所述转动杆的一端插入插槽内，在钻孔内推动外套筒和转动杆将钻孔应力计推送至钻孔指定位置；转动转动杆，所述转动杆带动连接杆旋转，所述连接杆推动推杆直线移动，所述推杆推动上承压板向上移动，并使得上承压板和下承压板紧贴钻孔孔壁并产生一定的预压力，实现钻孔应力计的主动承压；然后将转动杆和外套筒从钻孔内移出。通过插杆将外套筒与左端盖连接，在转动转动杆时，操作人员把持住外套筒，有效的避免了外套筒和钻孔应力计发生转动。
A monitoring system for rock burst, characterized in that: it includes a borehole stress gauge and a borehole stress gauge driving device; when installing the borehole stress gauge in a borehole, one end of the outer sleeve is sleeved on the left end of the left end cover, the socket I is connected with the socket II by an insertion rod, one end of the rotating rod is inserted into the slot, and the outer sleeve and the rotating rod are pushed in the borehole to push the borehole stress gauge to a specified position of the borehole; the rotating rod is rotated, the rotating rod drives the connecting rod to rotate, the connecting rod pushes the push rod to move linearly, the push rod pushes the upper pressure plate to move upward, and makes the upper pressure plate and the lower pressure plate close to the borehole wall and generate a certain pre-pressure, so as to realize the active pressure of the borehole stress gauge; then the rotating rod and the outer sleeve are removed from the borehole. The outer sleeve is connected to the left end cover by the insertion rod, and when the rotating rod is rotated, the operator holds the outer sleeve, which effectively prevents the outer sleeve and the borehole stress gauge from rotating.
Description
Technical Field
The invention relates to the technical field of rock burst monitoring, in particular to a rock burst monitoring system.
Background
At present, under a mine, the mining of a coal body inevitably causes the redistribution of a rock stress field, the new stress field distribution state has extremely important influence on the stability of a roadway and a stope, particularly for the deep mining of the mine, rock burst caused by the high concentration of surrounding rock stress fields occurs, the rock burst is a dynamic phenomenon which is generated by the release of deformation energy and is characterized by sudden, abrupt and violent damage, and the dynamic phenomenon is essentially caused by the sudden release of a large amount of elastic energy. Rock burst is essentially the stress problem of coal rock mass, so "stress" is the most reliable physical quantity for rock burst monitoring. Therefore, the accurate monitoring of the change of the surrounding rock stress is of great significance for maintaining the safety of stopes and roadway space.
For rock burst monitoring, it is often necessary to install a borehole stress gauge in a deep blind borehole of Φ40- Φ60, with a hole depth of 8-25 meters, connect the various components as required, and push the borehole stress gauge into the borehole.
The following technical problems exist in the prior art:
1. the design principle of the existing drilling stress sensor is basically divided into the following two types:
(1) The hydraulic principle is utilized, the drilling stress sensor is pushed to a preset drilling depth position through the installation tool during installation, and then the volume of the hydraulic oil cavity is changed through the manual hydraulic pump or the tool, so that the pressure bearing surface of the drilling stress sensor is ensured to be in close contact with the hole wall, and the effect of active pressure bearing is achieved. When the top plate is pressed, the pressure bearing plate is displaced under the action of stress, so that the volume of the hydraulic cavity is reduced, the pressure is increased accordingly, the local position of the cylinder body attached with the stress strain gauge is elastically deformed under the action of the liquid pressure, and the stress value is calculated through a pressure formula. The drilling stress sensor produced by the principle has the problems of poor linearity or inaccurate force measurement or failure caused by internal leakage or external leakage of a hydraulic cavity.
(2) The non-active pressure-bearing drilling stress sensor is characterized in that a sensor attached with a strain gauge is directly installed in a hole, the sensor is guaranteed to be fully contacted with the hole wall through a filling material, but the construction is very difficult, the pressure release is easy to occur due to incomplete filling or unsuitable filling material, and the actual existing stress is easy to be measured inaccurately or not measured.
2. It is very difficult in the prior art to push the borehole stressmeter into place within the borehole.
This is a disadvantage of the prior art.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a rock burst monitoring system aiming at the defects in the prior art, and the adopted drilling stress gauge does not need hydraulic medium, so that the drilling stress gauge can actively bear pressure and is convenient to install in a drilled hole.
The technical scheme is that the rock burst monitoring system comprises a drilling stress gauge and a drilling stress gauge driving device, wherein the drilling stress gauge comprises an upper bearing plate and a lower bearing plate, the left end of the lower bearing plate is fixedly connected with a left end cover or the lower bearing plate and the left end cover are integrally formed, the right end of the lower bearing plate is fixedly connected with a right end cover or the lower bearing plate and the right end cover are integrally formed, the upper bearing plate is arranged between the left end cover and the right end cover in a sliding manner, a push rod capable of pushing the upper bearing plate to move up and down is arranged between the upper bearing plate and the lower bearing plate, a stress sensitive element and a conversion circuit thereof are attached to the lower bearing plate, the stress sensitive element and the conversion circuit thereof are connected with a display instrument outside a drilling through a data line, the stress sensitive element and the conversion circuit thereof are not described in the prior art, one end of the push rod is connected with a connecting rod for driving the push rod, the connecting rod penetrates through the left end cover and is connected with the left end cover in a threaded manner, one end of the connecting rod is provided with a slot I, and the left end cover is provided with a jack I;
The drilling stress gauge driving device comprises an outer sleeve, a rotating rod is arranged in the outer sleeve, the rotating rod is in threaded connection with the outer sleeve, and one end of the outer sleeve is provided with a jack II matched with the jack I;
The drilling stress meter is installed in a drill hole, one end of an outer sleeve is sleeved at the left end of a left end cover, a jack I is connected with a jack II through an inserting rod, one end of a rotating rod is inserted into the inserting groove, the outer sleeve and the rotating rod are pushed in the drill hole to push the drilling stress meter to a designated position of the drill hole, the rotating rod is rotated, the connecting rod is driven to rotate, the connecting rod pushes a push rod to linearly move, the push rod pushes an upper bearing plate to move upwards, the upper bearing plate and a lower bearing plate are enabled to cling to the wall of the drill hole and generate certain pre-pressure, active bearing of the drilling stress meter is achieved, and then the rotating rod and the outer sleeve are moved out of the drill hole. The outer sleeve is connected with the left end cover through the inserted link, and when the rotating rod is rotated, an operator holds the outer sleeve, so that the outer sleeve and the drilling stress gauge are effectively prevented from rotating.
Preferably, the lower bearing plate and the left end cover are provided with a wire guide I for placing the data wire, and the outer sleeve is provided with a wire guide II for placing the data wire. The wire guide I and the wire guide II are arranged to facilitate the placement of the data wires.
Preferably, one end of the outer sleeve connected with the drilling stress gauge is a horn mouth, and the maximum outer diameter of the outer sleeve is smaller than the maximum outer diameter of the left end cover.
Preferably, the outer sleeve can be detachably assembled and connected by a plurality of outer sleeve sections, and the rotating rod can be detachably assembled and connected by a plurality of rotating rod sections. The outer sleeve and the rotating rod are assembled by multiple sections, so that the problem that the outer sleeve and the rotating rod are overlong and are not easy to operate is solved, and the outer sleeve can protect the rotating rod inside the outer sleeve.
Preferably, the plurality of outer sleeve segments are threaded to form the entire outer sleeve and the plurality of rotating rod segments are threaded to form the entire rotating rod.
Preferably, one end of the rotating rod and the slot are provided with teeth matched with each other, so that the rotating rod can be inserted into the slot to drive the connecting rod to rotate.
The structure of the borehole stress gauge can be set into the following three forms:
The push rod comprises a push rod body and a spherical bulge arranged on the push rod body, a groove I matched with the spherical bulge is arranged on the upper bearing plate, a groove II matched with the spherical bulge is arranged on the lower bearing plate, the spherical bulge is in point contact with the groove I, and the spherical bulge is in point contact with the groove II.
When the drilling stress sensor is installed in a drilling hole, an operator inserts the long rod into the slot to rotate the connecting rod, and the connecting rod is in threaded connection with the left end cover, so that the connecting rod can pull the push rod to move left and right in a reciprocating manner in the rotating process, and the push rod can push the upper bearing plate to move up and down along the left end cover and/or the right end cover by pulling the push rod to reciprocate linearly, and meanwhile, the upper bearing plate and the lower bearing plate can be clung to the wall of the drilling hole and generate certain pre-pressure, so that active bearing is realized. The rock burst is transmitted to the lower bearing plate through the upper bearing plate and the spherical bulge, the pressure-sensitive element and the conversion circuit thereof convert the elastic change of the lower bearing plate and then transmit the elastic change to the display instrument through the data wire, and the change of the pressure value is read through the display instrument.
(II) the push rod includes push rod body and sets up the hemisphere arch on the push rod body, be provided with on the upper bearing plate with hemisphere protruding complex recess I, hemisphere arch is the point contact with recess I, be provided with on the lower bearing plate with push rod body complex recess III, push rod body and recess III's inner wall laminating.
And thirdly, the push rod comprises a push rod body and a hemispherical bulge arranged on the push rod body, a groove II matched with the hemispherical bulge is arranged on the lower bearing plate, the hemispherical bulge is in point contact with the groove II, a groove IV matched with the push rod body is arranged on the upper bearing plate, and the push rod body is attached to the inner wall of the groove IV.
The second and third structural forms are improvements on the first structural form, the drilling stress gauge is installed in a drilling hole, and the upper bearing plate is moved upwards by pushing the push rod, so that active bearing is realized. On the basis of realizing initiative pressure bearing, because push rod body and last bearing plate or lower bearing plate laminating for the transmission that impact ground pressure can be comparatively equipartition is on the lower bearing plate, has improved the stability and the accuracy of stress sensitive components and parts to rock burst monitoring.
Preferably, the push rod is provided with a clamping groove, the connecting rod is provided with a claw, the claw can rotate in the clamping groove, and the clamping groove is limited in the left-right direction to the claw.
Preferably, the right end of the left end cover is provided with a guide groove I and/or the left end of the right end cover is provided with a guide groove II, the left end and/or the right end of the upper bearing plate is provided with a guide protrusion, and the upper bearing plate can move up and down along the guide groove I and/or the guide groove II through the guide protrusion.
Compared with the prior art, the rock burst monitoring system has the advantages that the rock burst monitoring system is installed in a drill hole, and the upper bearing plate is enabled to move upwards by pushing the push rod, so that active bearing is realized. On the basis of realizing initiative pressure bearing, because push rod body and last bearing plate or lower bearing plate laminating for the transmission that impact ground pressure can be comparatively equipartition is on the lower bearing plate, has improved the stability and the accuracy of stress sensitive components and parts to rock burst monitoring.
It is seen that the present invention provides substantial features and improvements over the prior art, as well as significant advantages in its practice.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the installation of an outer sleeve with a rotating rod;
FIG. 3 is a schematic view of the borehole stress gauge of FIG. 1;
FIG. 4 is a schematic diagram of a borehole stress gauge;
FIG. 5 is a schematic view of the upper bearing plate of FIG. 4;
FIG. 6 is a schematic view of the lower bearing plate of FIG. 4;
FIG. 7 is a schematic view of the push rod of FIG. 4;
FIG. 8 is a schematic diagram of a borehole stress meter;
FIG. 9 is a schematic view of the lower bearing plate of FIG. 8;
FIG. 10 is a schematic diagram of a left end cap;
FIG. 11 is a schematic diagram II of the left end cap;
FIG. 12 is a schematic view of the right end cap;
fig. 13 is a schematic view of the push rod of fig. 9.
In the drawing, the upper bearing plate 1, the lower bearing plate 2, the groove II 2, the wire guide I2, the groove III 2, the left end cover 3, the through hole 3.1, the guide groove I3.2, the jack I3.3, the right end cover 4.1, the guide groove II 4.1, the push rod 5, the spherical protrusion 5.1, the clamping groove 5.2, the hemispherical protrusion 5.3, the connecting rod 6.1, the slot 6.2, the clamping jaw 7, the stress sensitive element and the conversion circuit thereof, the data line 8, the outer sleeve 9, the jack II 9.1, the wire guide hole II 9.2, the rotating rod 10 and the inserting rod 11 are arranged.
Detailed Description
In order to make the objects, features and advantages of the present invention more comprehensible, embodiments accompanied with specific embodiments and figures are described in detail below, wherein the embodiments are described only in part but not in all embodiments. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the invention are intended to be within the scope of the patent protection.
As shown in the figure, the rock burst monitoring system comprises a drilling stress meter and a drilling stress meter driving device, wherein the drilling stress meter comprises an upper bearing plate 1 and a lower bearing plate 2, the left end of the lower bearing plate 2 is fixedly connected with a left end cover 3 or the lower bearing plate 2 and the left end cover 3 are integrally formed, the right end of the lower bearing plate 2 is fixedly connected with a right end cover 4 or the lower bearing plate 2 and the right end cover are integrally formed, the drilling stress meter disclosed in FIG. 3 is characterized in that the lower bearing plate 2, the left end cover 3 and the right end cover 4 are integrally formed, the drilling stress meter disclosed in FIG. 4 and FIG. 8 is fixedly connected with the left end cover 3, and the right end of the lower bearing plate 2 is fixedly connected with the right end cover 4.
The upper bearing plate 1 slides from top to bottom and is arranged between the left end cover 3 and the right end cover 4, a push rod 5 capable of pushing the upper bearing plate 1 to move up and down is arranged between the upper bearing plate 1 and the lower bearing plate 2, a stress sensitive component and a conversion circuit 7 thereof are attached to the lower bearing plate 2, the stress sensitive component and the conversion circuit 7 thereof are connected with a display instrument outside a drilling hole through a data wire 8, one end of the push rod 5 is connected with a connecting rod 6 for driving the push rod 5, the connecting rod 6 penetrates through the left end cover 3 and is in threaded connection with the left end cover 3, one end of the connecting rod 6 is provided with a slot 6.1, and one end of the left end cover 3 is provided with a jack I3.3.
The driving device of the drilling stress meter comprises an outer sleeve 9, a rotating rod 10 is arranged in the outer sleeve, the rotating rod 10 is in threaded connection with the outer sleeve, and one end of the outer sleeve 9 is provided with a jack II9.1 matched with the jack I3.3.
The drilling stress timing device is characterized in that a drilling stress timing device is arranged in a drilling hole, one end of an outer sleeve 9 is sleeved at the left end of a left end cover 3, a jack I3.3 is connected with a jack II9.1 through a plug rod 11, one end of a rotating rod 10 is inserted into a slot 6.1, the outer sleeve 9 and the rotating rod 10 are pushed in the drilling hole to push the drilling stress meter to a designated drilling position, the rotating rod 10 is rotated, the rotating rod 10 drives a connecting rod 6 to rotate, the connecting rod 6 pushes a push rod 5 to linearly move, the push rod 5 pushes an upper bearing plate 1 to move upwards, the upper bearing plate 1 and a lower bearing plate 2 are tightly attached to the wall of the drilling hole and generate certain pre-compression force, driving of the drilling stress meter is achieved, and then the rotating rod 10 and the outer sleeve 9 are moved out of the drilling hole.
The lower bearing plate 2 and the left end cover 3 are provided with a wire guide I2.2 for placing the data wire 8, and the outer sleeve 9 is provided with a wire guide II9.2 for placing the data wire 8.
The end of the outer sleeve 9 connected with the drilling stress gauge is a horn mouth, and the maximum outer diameter of the outer sleeve 9 is smaller than the maximum outer diameter of the left end cover 3.
The outer sleeve 9 can be detachably assembled and connected by a plurality of outer sleeve sections, and the rotating rod 10 can be detachably assembled and connected by a plurality of rotating rod sections. Further, a plurality of outer sleeve segments are screwed together to form the entire outer sleeve 9, and a plurality of rotating rod segments are screwed together to form the entire rotating rod 10.
One end of the rotating rod 10 and the slot 6.1 are provided with teeth matched with each other, so that the rotating rod 10 can be inserted into the slot 6.1 to drive the connecting rod 6 to rotate.
As shown in fig. 4-7, the push rod 5 includes a push rod body and a spherical protrusion 5.1 disposed on the push rod body, a groove I1.1 matched with the spherical protrusion 5.1 is disposed on the upper bearing plate 1, a groove II2.1 matched with the spherical protrusion 5.1 is disposed on the lower bearing plate 2, the spherical protrusion 5.1 is in point contact with the groove I1.1, and the spherical protrusion 5.1 is in point contact with the groove II 2.1.
As shown in fig. 8, 9 and 13, the push rod 5 includes a push rod body and a hemispherical protrusion 5.3 disposed on the push rod body, a groove I1.1 matched with the hemispherical protrusion 5.3 is disposed on the upper bearing plate 1, the hemispherical protrusion 5.3 is in point contact with the groove I1.1, a groove III2.3 matched with the push rod body is disposed on the lower bearing plate 2, and the push rod body is attached to an inner wall of the groove III 2.3.
In addition, the drilling stress meter can be further provided with a structure that the push rod 5 comprises a push rod body and a hemispherical bulge 5.3 arranged on the push rod body, a groove II2.1 matched with the hemispherical bulge 5.3 is arranged on the lower bearing plate 2, the hemispherical bulge 5.3 is in point contact with the groove II2.1, a groove IV matched with the push rod body is arranged on the upper bearing plate 1, the push rod body is attached to the inner wall of the groove IV, and the groove IV and the groove III are identical in structure.
The push rod 5 is provided with a clamping groove 5.2, the connecting rod 6 is provided with a claw 6.2, the claw 6.2 can rotate in the clamping groove 5.2, and the clamping groove 5.2 limits the claw 6.2 in the left-right direction.
The right-hand member of left end cover 3 is provided with guide way I3.2 and/or the left end of right-hand member cover 4 is provided with guide way II4.1, the left end and/or the right-hand member of upper bearing plate 1 are provided with guide protrusion 1.2, upper bearing plate 1 can reciprocate along guide way I3.2 and/or guide way II4.1 through guide protrusion 1.2.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are mutually referred.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The rock burst monitoring system is characterized by comprising a drilling stress meter and a drilling stress meter driving device;
The drilling stress gauge comprises an upper bearing plate (1) and a lower bearing plate (2), wherein the left end of the lower bearing plate (2) is fixedly connected with a left end cover (3) or the lower bearing plate (2) and the left end cover (3) are integrally formed, the right end of the lower bearing plate (2) is fixedly connected with a right end cover (4) or the lower bearing plate (2) and the right end cover are integrally formed, the upper bearing plate (1) is arranged between the left end cover (3) and the right end cover (4) in a sliding manner up and down, a push rod (5) capable of pushing the upper bearing plate (1) to move up and down is arranged between the upper bearing plate (1) and the lower bearing plate (2), stress sensitive components and conversion circuits (7) thereof are attached to the lower bearing plate (2), the stress sensitive components and the conversion circuits (7) thereof are connected with a display instrument outside a drilling hole through a data line (8), one end of the push rod (5) is connected with a connecting rod (6) for driving the push rod (5), the connecting rod (6) penetrates through the left end cover (3), one end of the connecting rod (6) is provided with a threaded hole (3), and one end (3) of the connecting rod (6) is provided with a jack (3.I;
The drilling stress meter driving device comprises an outer sleeve (9), wherein a rotating rod (10) is arranged in the outer sleeve, the rotating rod (10) is in threaded connection with the outer sleeve, and one end of the outer sleeve (9) is provided with a jack II (9.1) matched with the jack I (3.3);
Installing a drilling stress timer in a drilling hole, sleeving one end of an outer sleeve (9) at the left end of a left end cover (3), connecting a jack I (3.3) with a jack II (9.1) through an inserting rod (11), inserting one end of a rotating rod (10) into a slot (6.1), pushing the outer sleeve (9) and the rotating rod (10) in the drilling hole to push the drilling stress timer to a designated drilling hole position, rotating the rotating rod (10), driving a connecting rod (6) to rotate by the rotating rod (10), pushing a push rod (5) to linearly move by the connecting rod (6), pushing an upper bearing plate (1) to move upwards, enabling the upper bearing plate (1) and a lower bearing plate (2) to cling to the wall of the drilling hole and generate a certain pre-pressure, and then moving the rotating rod (10) and the outer sleeve (9) out of the drilling hole;
The push rod (5) comprises a push rod body and a spherical bulge (5.1) arranged on the push rod body, a groove I (1.1) matched with the spherical bulge (5.1) is formed in the upper bearing plate (1), a groove II (2.1) matched with the spherical bulge (5.1) is formed in the lower bearing plate (2), the spherical bulge (5.1) is in point contact with the groove I (1.1), and the spherical bulge (5.1) is in point contact with the groove II (2.1);
Or the push rod (5) comprises a push rod body and a hemispherical bulge (5.3) arranged on the push rod body, a groove I (1.1) matched with the hemispherical bulge (5.3) is arranged on the upper bearing plate (1), the hemispherical bulge (5.3) is in point contact with the groove I (1.1), a groove III (2.3) matched with the push rod body is arranged on the lower bearing plate (2), and the push rod body is attached to the inner wall of the groove III (2.3);
Or push rod (5) include push rod body and set up hemispherical protruding (5.3) on the push rod body, be provided with on lower bearing plate (2) with hemispherical protruding (5.3) complex recess II (2.1), hemispherical protruding (5.3) are point contact with recess II (2.1), be provided with on last bearing plate (1) with push rod body complex recess IV, push rod body and recess IV's inner wall laminating.
2. The rock burst monitoring system according to claim 1, wherein the lower bearing plate (2) and the left end cover (3) are provided with a wire guide I (2.2) for placing a data wire (8), and the outer sleeve (9) is provided with a wire guide II (9.2) for placing the data wire (8).
3. The rock burst monitoring system according to claim 1 or 2, wherein one end of the outer sleeve (9) connected with the drilling stress gauge is a horn mouth, and the maximum outer diameter of the outer sleeve (9) is smaller than the maximum outer diameter of the left end cover (3).
4. The rock burst monitoring system according to claim 1 or 2, characterized in that the outer sleeve (9) is detachably assembled from a plurality of outer sleeve segments and the turning rod (10) is detachably assembled from a plurality of turning rod segments.
5. A rock burst monitoring system as claimed in claim 4, wherein a plurality of outer sleeve segments are threaded to form an entire outer sleeve (9) and a plurality of rotating rod segments are threaded to form an entire rotating rod (10).
6. The rock burst monitoring system according to claim 1, wherein one end of the rotating rod (10) and the slot (6.1) are provided with teeth matched with each other, so that the rotating rod (10) can be inserted into the slot (6.1) to drive the connecting rod (6) to rotate.
7. The rock burst monitoring system according to claim 1, wherein the push rod (5) is provided with a clamping groove (5.2), the connecting rod (6) is provided with a claw (6.2), the claw (6.2) can rotate in the clamping groove (5.2), and the clamping groove (5.2) limits the claw (6.2) in the left-right direction;
The left end of left end cover (3) is provided with guide way I (3.2) and/or the left end of right-hand member cover (4) is provided with guide way II (4.1), the left end and/or the right-hand member of going up bearing plate (1) are provided with guide protrusion (1.2), go up bearing plate (1) and can follow guide way I (3.2) and/or guide way II (4.1) through guide protrusion (1.2) and reciprocate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211638571.9A CN115790941B (en) | 2022-12-20 | 2022-12-20 | A monitoring system for rock burst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211638571.9A CN115790941B (en) | 2022-12-20 | 2022-12-20 | A monitoring system for rock burst |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115790941A CN115790941A (en) | 2023-03-14 |
| CN115790941B true CN115790941B (en) | 2025-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211638571.9A Active CN115790941B (en) | 2022-12-20 | 2022-12-20 | A monitoring system for rock burst |
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| CN (1) | CN115790941B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914393A (en) * | 2012-09-28 | 2013-02-06 | 山东科技大学 | Active pressure-bearing type positioning borehole stress meter and use method thereof |
| CN106546366A (en) * | 2016-10-09 | 2017-03-29 | 安徽理工大学 | A kind of umbellate form deep hole three-dimensional stress and displacement comprehensive test device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4272014B2 (en) * | 2003-08-26 | 2009-06-03 | 清敏 坂口 | Ground pressure measuring device and ground pressure measuring method |
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