CN219241897U

CN219241897U - Rock burst early warning device

Info

Publication number: CN219241897U
Application number: CN202320232485.1U
Authority: CN
Inventors: 辛崇伟; 李阿涛; 蔺增元
Original assignee: Beijing Anke Technology Co ltd
Current assignee: Beijing Anke Technology Co ltd
Priority date: 2023-02-16
Filing date: 2023-02-16
Publication date: 2023-06-23
Anticipated expiration: 2033-02-16

Abstract

The utility model relates to the technical field of rock burst detection, in particular to a rock burst early warning device, which comprises a stress meter, wherein an embedded pipe is movably sleeved on the outer side of the stress meter, a first fixed ring is fixed at the top of the embedded pipe, a plurality of connecting columns are uniformly distributed on the edge of the upper surface of the first fixed ring along the circumferential direction, a second fixed ring is fixedly connected at the top of the connecting columns, through holes are symmetrically formed in the left side and the right side of the second fixed ring, the two through holes penetrate through the first fixed ring, a screw rod is respectively arranged in the two through holes, the lower ends of the two screw rods are fixedly connected with a top ring, the top ring is movably sleeved on the outer pipe wall of the embedded pipe, two screw rods are respectively connected with an adjusting gear through threads, an adjusting sleeve is movably inserted in the central hole of the second fixed ring, teeth are uniformly formed on the outer side wall of the circumference of the lower part of the adjusting sleeve, and the teeth are meshed with the teeth of the two adjusting gears. After the device is used, the device can be pulled out of the ground quickly, so that the labor intensity is reduced, and the disassembly efficiency is improved.

Description

Rock burst early warning device

Technical Field

The utility model relates to the technical field of rock burst detection, in particular to a rock burst early warning device.

Background

Rock burst is a dynamic phenomenon characterized by sudden, abrupt, violent destruction of surrounding coal and rock mass of a stope due to the instantaneous release of elastic deformation energy when the mechanical equilibrium state of the surrounding coal and rock mass is broken. Rock burst is a special mine pressure manifestation, and the manifestation intensity characteristics of the rock burst are generally weak impact, strong impact, ejection, ore shock, rock burst, coal cannon, shock wave, elastic vibration and the like, and are often accompanied by phenomena of coal rock mass ejection, bang, air wave and the like, the rock burst is suddenly and severely generated, the impact wave force is huge, a roadway, a coal face and equipment are instantaneously destroyed, and the personnel are injured, so that the rock burst is very important to monitor and early warning.

The pressure monitoring device that adopts among the conventional art often uses the rig at tunnel roof or two group construction drilling earlier, then installs the stress meter in the drilling, and the connecting wire outer end that the stress meter connects is installed to the outside corresponding instrument of drilling on, monitors mine pressure, reaches and carries out the effect of early warning forecast to rock burst, but, the stress meter is when long-term outdoor detection is back, dismantles, because the change of its surrounding geology forms the extrusion to the stress meter periphery, causes its difficulty of extracting, has reduced rock burst early warning device's reuse efficiency.

CN207701179U discloses a rock burst early warning device for preventing and treating coal mine, which uses a telescopic rod to insert a borehole stress meter into the bottom of a borehole for detecting the change of mine pressure, and displays the change of mine pressure through a stress display meter. However, since the outer diameter of the strain gauge is smaller than the bore diameter of the borehole, the strain gauge cannot be sufficiently attached to the borehole wall, and it is difficult to accurately and timely reflect the change in mine pressure.

Disclosure of Invention

The utility model aims to provide a rock burst early warning device.

In order to solve the technical problems, the application provides the following technical scheme:

the utility model provides a rock burst early warning device, includes the stress meter, the outside movable sleeve of stress meter is equipped with the embedding pipe, the top of embedding pipe is fixed with first solid fixed ring, the edge of the upper surface of first solid fixed ring has a plurality of spliced poles along circumferencial direction equipartition, the top fixedly connected with second solid fixed ring of spliced pole, the through-hole has been seted up to the left and right sides symmetry of second solid fixed ring, two the through-hole all runs through first solid fixed ring, and two respectively be equipped with a lead screw in the through-hole, two the lower extreme and the top ring fixed connection of lead screw, the top ring movable sleeve is established the outer tube wall of embedding pipe, two the lead screw is connected with an adjusting gear through the screw respectively, the downthehole activity of the centre of second solid fixed ring is inserted and is equipped with adjusting sleeve, the tooth is evenly seted up to adjusting sleeve's lower part circumference lateral wall, tooth and tooth meshing mutually with the tooth of two adjusting gears.

The outer edge of the upper end opening of the first fixing ring is fixedly connected with a fixing sleeve, the fixing sleeve penetrates through the center hole of the second fixing ring, the outer side wall of the fixing sleeve is sleeved inside the adjusting sleeve, and the inner side wall of the top of the fixing sleeve is fixedly connected with a third fixing ring. The fixed sleeve is mainly used for fixing the third fixed ring inside, so that the hexagon screw can conveniently move up and down to adjust the depth.

The wire passing hole is formed in one side of the third fixing ring, a hexagonal screw is sleeved in the center hole of the third fixing ring in a threaded mode, and the lower end of the hexagonal screw is connected with the top of the stress meter in a rotating mode. The third fixing ring is provided with a wire through hole, so that the strain gauge body can be electrically connected with the corresponding controller through a wire.

Wherein the number of the connecting columns is 4.

Wherein, two adjusting gears are located in the gap between the first fixed ring and the second fixed ring.

The outer diameter of the stress meter body is equal to the inner diameter of the embedded pipe, so that when the stress meter body is retracted into the embedded pipe, soil attached to the surface of the stress meter body is scraped through the pipe wall of the embedded pipe, and the next use is facilitated.

Wherein, the lateral wall symmetry of adjustment sleeve pipe upper portion has seted up the regulation hole. Through inserting the hexagonal spanner in the regulation hole, can be convenient for rotatory regulation sleeve pipe, improve regulation efficiency.

Compared with the prior art, the rock burst early warning device has at least the following beneficial effects:

according to the rock burst early warning device, the inner hexagonal wrench is inserted into the adjusting hole in the upper portion of the adjusting sleeve, the adjusting sleeve is rotated, the left adjusting gear and the right adjusting gear are simultaneously driven to rotate in the same direction under the action of the teeth, the screw rod connected with the inner threads of the left adjusting gear and the right adjusting gear moves downwards to drive the top ring at the lower portion, the top ring is blocked by the ground, the adjusting gear moves upwards along the screw rod, the second fixing ring and the first fixing ring move upwards together relative to the top ring, the embedded pipe is driven to move upwards, the embedded pipe is lifted from the ground, the embedded pipe and the pore canal are loosened, the device can be pulled out of the ground quickly, labor intensity is reduced, and the dismounting efficiency is improved. Moreover, when the device is used, the stress gauge can be fully attached to the wall of the hole of the drill hole, so that the monitoring accuracy is ensured.

The rock burst early warning device is further described below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an impact ground pressure warning device of the utility model;

FIG. 2 is a cross-sectional view of the overall structure of the rock burst warning device of the present utility model;

fig. 3 is a schematic diagram of a portion of the rock burst warning device of the present utility model.

The device comprises a 1-stress meter, a 2-embedded pipe, a 3-screw rod, a 4-top ring, a 5-adjusting gear, a 6-adjusting sleeve, a 7-hexagonal screw, a 21-first fixing ring, a 22-connecting column, a 23-second fixing ring, a 24-through hole, a 25-fixing sleeve, a 26-third fixing ring, a 261-wire passing hole, a 61-adjusting hole and a 62-tooth.

Detailed Description

As shown in fig. 1-3, the rock burst early warning device comprises a stress meter 1, the periphery of the stress meter 1 is movably sleeved with an embedded pipe 2, the top of the embedded pipe 2 is fixedly connected with a first fixed ring 21, four connecting columns 22 are uniformly distributed on the upper surface of the first fixed ring 21 along the circumferential direction, the tops of the four connecting columns 22 are fixedly connected with a second fixed ring 23, through holes 24 are symmetrically formed in the left side and the right side of the second fixed ring 23, the left through hole 24 and the right through hole 24 respectively penetrate through the first fixed ring 21, the outer edge of an upper end opening of the first fixed ring 21 is fixedly connected with a fixed sleeve 25, the fixed sleeve 25 penetrates through a central hole of the second fixed ring 23, the outer side wall of the fixed sleeve 25 is sleeved in an adjusting sleeve 6, the inner side wall of the top of the fixed sleeve 25 is fixedly connected with a third fixed ring 26, one side of the third fixed ring 26 is provided with a wire passing hole 261, and the embedded pipe 2 mainly limits and protects the body of the internal stress meter 1. Wherein the outer diameter of the body of the stress gauge 1 is equal to the inner diameter of the embedded pipe 2.

The left through hole 24 and the right through hole 24 are respectively movably inserted into the screw rod 3, the lower ends of the screw rod 3 are fixedly connected with the top ring 4, the top ring 4 is movably sleeved on the outer pipe wall of the embedded pipe 2, and the top ring 4 mainly abuts against the ground to provide support for the pulling-out of the device.

The left and right screw rods 3 are respectively connected with an adjusting gear 5 through threads, the left and right adjusting gears 5 are positioned in gaps between the first fixed ring 21 and the second fixed ring 23, the adjusting gears 5 rotate on the left and right screw rods 3, and the ground is used for blocking the top ring 4 at the lower end of the screw rod 3, so that the adjusting gears 5 move upwards relative to the screw rod 3, and the embedded pipe 2 is driven to move upwards.

The adjusting sleeve 6 is movably inserted in the central hole of the second fixing ring 23, the teeth 61 are uniformly formed on the outer side wall of the lower circumference of the adjusting sleeve 6, the adjusting holes 62 are symmetrically formed on the upper part of the outer side wall of the circumference of the adjusting sleeve 6, the teeth 61 are respectively meshed with the teeth of the left adjusting gear 5 and the right adjusting gear 5, the adjusting sleeve 6 is rotated by inserting a hexagonal wrench into the adjusting holes 62, the teeth 61 uniformly formed on the outer side wall of the lower circumference of the adjusting sleeve 6 simultaneously drive the left adjusting gear 5 and the right adjusting gear 5 to rotate, so that a screw rod is driven to rise or fall, and in the using process, the adjusting sleeve 6 can be taken out from the central hole of the second fixing ring 23 to adjust the device of other monitoring points, thereby realizing generalization.

The central hole of the third fixed ring 26 is threaded and sleeved with a hexagonal screw 7, the lower end of the hexagonal screw 7 is rotationally connected with the top of the stress meter 1, and the hexagonal screw 7 mainly adjusts the installation depth of the lower stress meter 1 by rotating in the third fixed ring 26.

The working method of the rock burst early warning device comprises the following steps:

when the device is used, the upper end of the device through hammering the adjusting sleeve 6 is inserted into a pre-opened pore canal until the lower part of the top ring 4 is contacted with the ground, then the hexagonal screw 7 is rotated by a hexagonal wrench, the hexagonal screw 7 moves downwards, and the stress gauge 1 at the lower end is jacked into a corresponding detection position. When the device is disassembled after the side detection is finished, the embedded pipe 2 is extruded by geology outside the embedded pipe 2, so that the embedded pipe 2 cannot be pulled out of the ground smoothly, and therefore, an inner hexagonal wrench is inserted into an adjusting hole 62 at the upper part of the adjusting sleeve 6, the adjusting sleeve 6 is rotated, under the action of teeth 61, the left and right adjusting gears 5 are driven to rotate in the same direction, a screw rod 3 in threaded connection with the left and right adjusting gears 5 moves downwards to drive a top ring 4 at the lower part, and the top ring 4 is blocked by the ground, so that a second fixed ring 23 moves upwards together with the first fixed ring 21 relative to the top ring 4, the embedded pipe 2 is driven to move upwards, the embedded pipe 2 is lifted from the ground, and the device can be pulled out of the ground after the embedded pipe 2 is loosened from a pore passage.

The electrical connection or structure not described in detail in this embodiment is the prior art. The above examples are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the present utility model.

Claims

1. The utility model provides a rock burst early warning device, includes stress meter (1), its characterized in that: the outside movable sleeve of stress meter (1) is equipped with embedded pipe (2), the top of embedded pipe (2) is fixed with first solid fixed ring (21), the edge of the upper surface of first solid fixed ring (21) is followed the circumferencial direction equipartition and is had a plurality of spliced poles (22), the top fixedly connected with second solid fixed ring (23) of spliced pole (22), through-hole (24) have been seted up to the left and right sides symmetry of second solid fixed ring (23), two through-hole (24) all run through first solid fixed ring (21), and two respectively be equipped with a lead screw (3) in through-hole (24), two the lower extreme and the top ring (4) fixed connection of lead screw (3), top ring (4) movable sleeve are established the outer tube wall of embedded pipe (2), two lead screw (3) are connected with an adjusting gear (5) through the screw thread respectively, the centre bore internal activity of second solid fixed ring (23) has been seted up adjusting sleeve (6), the lower part circumference of adjusting sleeve (6) outer gear (62) tooth (5) are seted up mutually with two tooth teeth.

2. The rock burst warning device of claim 1, wherein: the outer edge of the upper end opening of the first fixing ring (21) is fixedly connected with a fixing sleeve (25), the fixing sleeve (25) penetrates through the center hole of the second fixing ring (23), the outer side wall of the fixing sleeve (25) is sleeved inside the adjusting sleeve (6), and the inner side wall of the top of the fixing sleeve (25) is fixedly connected with a third fixing ring (26).

3. The rock burst warning device of claim 2, wherein: the wire passing hole (261) is formed in one side of the third fixed ring (26), a hexagonal screw (7) is sleeved in the center hole of the third fixed ring (26) in a threaded mode, and the lower end of the hexagonal screw (7) is connected with the top of the stress meter (1) in a rotating mode.

4. The rock burst warning device of claim 1, wherein: the number of the connecting posts (22) is 4.

5. The rock burst warning device of claim 1, wherein: two adjusting gears (5) are located in the gap between the first fixing ring (21) and the second fixing ring (23).

6. The rock burst warning device of claim 1, wherein: the outer diameter of the stress meter (1) body is equal to the inner diameter of the embedded pipe (2).

7. The rock burst warning device of claim 1, wherein: the outer side wall of the upper part of the adjusting sleeve (6) is symmetrically provided with adjusting holes (61).