CN218156094U - Installation push rod of borehole stressmeter - Google Patents
Installation push rod of borehole stressmeter Download PDFInfo
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- CN218156094U CN218156094U CN202222610178.0U CN202222610178U CN218156094U CN 218156094 U CN218156094 U CN 218156094U CN 202222610178 U CN202222610178 U CN 202222610178U CN 218156094 U CN218156094 U CN 218156094U
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Abstract
The utility model relates to a drilling stressometer installation propelling movement pole belongs to colliery rock burst mining induced stress monitoring technology field. The utility model discloses a drilling stress meter, including propelling movement pole, angle sensor electric connection have a hand-held type angle monitor, the initial horizontal position of angle sensor is the erection fixation position of first festival installation pole and drilling stress meter. The utility model discloses a propelling movement tip sets up angle sensor, and it carries out the propelling movement after fixed with the stress meter installation, and the horizontal installation of stress meter is guaranteed to the deflection angle of real-time supervision stress meter in drilling among the propelling movement process.
Description
Technical Field
The utility model relates to a colliery rock burst mining stress monitoring technology field, concretely relates to drilling stressometer installation push rod.
Background
Mining stresses, also known as "secondary stresses," are stresses that are redistributed within the rock mass under the influence of excavation. In the production process of a coal mine, the stress balance of a coal rock body is broken, the mining stress is redistributed, and the potential safety hazards of rock burst such as roof fall, rib spalling and the like are easily generated.
The borehole stress meter is a load measuring instrument for rock mass or coal mass for mine, and can be used for measuring mining induced stresses such as shaft surrounding rock stress, coal pillar stress, working face advance pressure, stope top and bottom plate stress, roadway peripheral stress and the like.
At present, a pressure pillow type borehole stressometer is commonly used in a coal mine engineering field, and a borehole penetrating type fixed installation mode is adopted. Because the structure of the pressure pillow is a flat bag-shaped structure with a shallow groove on the periphery, the deformation of the stress meter has obvious directionality, and the deformation is maximum along the direction vertical to the plane of the pressure pillow. Therefore, the installation of the stress gauge has strict requirements on the installation direction, and in order to measure the true vertical stress of the overburden, the plane of the pressure pillow must be perpendicular to the gravity direction, namely the plane of the pressure pillow must be located in the horizontal plane after the stress gauge is installed.
The existing borehole stressometers are generally installed by adopting bolt-connected installation push rods, as shown in fig. 4, the common method is to use installation rods with the length of 1 meter each, insert the 1 st section of the installation rod into a cross fork-shaped push rod at the tail part of the borehole stressometer, rotate the installation rod clockwise by 90 degrees, keep the cross push rod in a horizontal position and keep the cross push rod still, then connect the 2 nd section to the nth section, connect and tighten the installation rods one by using M6 bolts and nuts, and push the stressometers to a preset hole position, namely n meters. However, in actual installation, because the strength of the coal rock mass is low, the length of a drill hole constructed for installing the drilling stress meter is usually longer, the drill hole is easy to deform, hole collapse occurs and the like, and the drilling quality cannot be guaranteed. Therefore, in order to enable the borehole stressometer to reach a specified position, the installation rod needs to be repeatedly rotated and pushed and pulled in the actual installation process. The existing mounting rod is difficult to capture again once separated from the borehole stressometer in the mounting process, and the mounting angle is changed accordingly.
In addition, as the mounting rods are connected by adopting M6 bolts and nuts, the connecting holes are phi 6.5mm, the accumulated error after connection is large, and finally, an included angle is formed between the position of the pressure pillow of the borehole stress meter in a deep hole of 15 meters (n = 15) and the horizontal plane. Therefore, the real vertical stress and the change of the overburden rock of the coal mine tunnel can not be effectively measured, the monitoring and early warning of the change of the rock burst stress of the coal mine are not facilitated, and potential safety hazards of coal mine production are realized.
In order to overcome the problems existing in the installation process of the borehole stressometer, the invention patent with the application publication number of CN112903165A provides a borehole stressometer capable of accurately monitoring a three-dimensional installation angle and a using method thereof. The device can display the angle change of the stress gauge in the pushing process in real time, can adjust the stress gauge at any time in the installation process to enable the stress gauge to be in a horizontal state, and can ensure that the pressure pillow is in the horizontal state after the borehole stress gauge is installed to measure the stress in the vertical direction.
However, the above patents also have disadvantages: the borehole stressometers at different positions and different boreholes have to use a set of three-dimensional angle sensors which are independent of each other, so that the once investment is large, and the borehole stressometers can only be used once, and the economy is not good.
Disclosure of Invention
For solving the problem among the prior art, the utility model discloses a drilling stress meter installation push rod has been designed to solve the problem that current drilling stress meter exists in the propelling movement installation.
The utility model adopts the technical proposal that: the propelling movement pole includes stressometer connecting rod and many installation poles, pegs graft in proper order between the installation pole, the one end and the installation pole of stressometer connecting rod peg graft, and the other end is the stressometer link, is equipped with the rotatory jaw of cross, it has the recess to open on the body of rod of the stressometer link of stressometer connecting rod, the fixed angular transducer of embedding installation in the recess, angular transducer is connected with hand-held type angle monitoring appearance, angular transducer's initial horizontal position is the level connection fixed position of stressometer connecting rod and drilling stressometer.
Furthermore, the two ends of the installation rod are respectively provided with a large insertion head and a small insertion head, the small insertion head of the installation rod is reduced in diameter integrally, the outer diameter of the small insertion head is the same as the inner diameter of the large insertion head, a spring clamping bean is arranged in the small insertion head, correspondingly, a connecting clamping hole is formed in the pipe wall of the large insertion head, and the adjacent installation rods are clamped and fixed with the connecting clamping hole through the spring clamping bean after being inserted.
Furthermore, the structure of the connecting end of the stress meter connecting rod and the mounting rod is the same as that of the splicing big head of the mounting rod.
Furthermore, it has the card beans export to open on the pipe wall of the grafting stub end of installation pole, the bottom of spring card beans is connected with the cassette, the diameter of cassette is greater than the internal diameter of card beans export, the body of grafting stub is inside just to being provided with spring housing to the card beans export, the cassette is arranged in spring housing, the bottom surface of cassette is connected with the spring.
Furthermore, the two sides of the pipe wall of the mounting rod and the stress meter connecting rod are symmetrically coated with mark lines respectively along the axial direction of the rod body, and the radial plane between the mark lines on the two sides of the rod body is the initial horizontal position of the angle sensor.
Furthermore, angle sensor passes through the cable with hand-held type angle monitor and is connected, the cable sets up along the body of rod inside of stress meter connecting rod at the angle sensor link to wear out at the pole wall middle section trompil of stress meter connecting rod.
Compared with the prior art, the utility model discloses a drilling stressometer installation push rod's progress part lies in: the angle sensor and the push rod are integrally manufactured, different borehole stressometers are installed, the same set of push rod can be repeatedly used, and the manufacturing cost is saved; the connection of each section of mounting rod of the push rod is changed from M6 bolt and nut connection into spring clamping connection, so that two sections of mounting rods can be conveniently and quickly connected or detached; horizontal marking lines are coated on the two sides of the pushing rod, so that whether the pushing process meets the horizontal requirement or not can be conveniently seen.
Drawings
FIG. 1 is a structural schematic diagram of a borehole stress meter mounting push rod.
Fig. 2 is an enlarged schematic view of a portion a of fig. 1.
Fig. 3 is an enlarged schematic view of B of fig. 1.
Fig. 4 is a schematic structural diagram of a push rod for mounting a borehole stress meter in the prior art.
In the figure, a stress meter connecting rod 1, a mounting rod 2, an angle sensor 3, a handheld angle monitor 4, a cable 5, a marking line 6, a cross-shaped rotary fork 11, a groove 12, a large plug 21, a small plug 22, a spring clamping bean 23, a clamping seat 24, a spring sleeve 25 and a spring 26 are arranged.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments. The technical solutions in the embodiments of the present invention are clearly and completely described, and the described embodiments are only some embodiments of the present invention, not all embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the present invention.
As shown in fig. 1, 2 and 3, the utility model discloses an embodiment of drilling stress meter installation push rod, push rod include stress meter connecting rod 1 and multisection installation pole 2 in this embodiment, the quantity of installation pole 2 satisfy the propelling movement degree of depth requirement of drilling stress meter can, connect through the mode of pegging graft between the installation pole.
The rear end of the stress meter connecting rod 1 is connected with the front end of the mounting rod 2 in a plugging mode, the front end is a stress meter connecting end, and the front end is provided with a cross-shaped rotating fork 11 and is connected with the borehole stress meter in a rotating clamping mode. Open flutedly 12 on the body of rod of the stressometer link of stressometer connecting rod 1, the embedding installation is fixed with angle sensor 3 in the recess 12, the initial position of adjustment angle sensor 3 makes it the same with the level connection fixed position of stressometer connecting rod 1 and drilling stressometer to the level during installation, guarantee promptly that the initial horizontal position of angle sensor 3 is the horizontal position of drilling stressometer promptly, and use epoxy to seal fixedly, angle sensor 3 is connected with hand-held type angle monitor 4 through cable 5. The cable 5 sets up along the body of rod inside of stressometer connecting rod 1 at angle sensor 3 link to wear out and be connected with hand-held type angle monitor 4 at the pole wall middle section trompil of stressometer connecting rod 1. Angle sensor 3 and handheld angle monitor 4 are prior art's commercial product, and handheld angle monitor 4 embeds angle sensor circuit board and display screen, has the memory function, can real-time measurement, read out the angular variation of angle sensor along X, Y, Z axle direction on the stressometer connecting rod, the angular variation of drilling stressometer promptly. Defining an X axis as a left horizontal deflection and a right horizontal deflection; defining the Y axis as pitch yaw; the Z axis is defined as the left and right deflection along the borehole axis.
When the device is arranged, the X axis is defined to be horizontal 0 degree, anticlockwise is negative and clockwise is positive; when the display screen displays the degree of minus, the pushing rod can be rotated clockwise, so that the reading of the display screen returns to 0 degree, and the installation rod and the pressure pillow are ensured to be in horizontal positions; when the display screen displays the degree of '+', the pushing rod can be rotated anticlockwise, so that the display screen reading returns to 0 degree, and the installation rod and the pressure pillow are ensured to be in the horizontal position.
Similarly, the direction and meaning of the Y-axis (pitch direction) and the Z-axis (yaw) can be defined.
The two sides of the pipe wall of the mounting rod 2 and the two sides of the pipe wall of the stress meter connecting rod 1 are symmetrically provided with scribed line marks respectively along the axial direction of the rod body, the marking lines 6 are coated with red paint, and the radial plane between the marking lines 6 on the two sides of the rod body is the initial horizontal position of the angle sensor 3. After the stress meter connecting rod 1 and each section of the mounting rod 2 are assembled, the marking lines 6 are all on the same straight line.
The mounting rod 2 is a hollow tube, the two ends of the mounting rod are respectively provided with a large insertion head 21 and a small insertion head 22, the small insertion head 22 of the mounting rod 2 is subjected to overall diameter reduction treatment, and the outer diameter of the small insertion head 22 is the same as the inner diameter of the large insertion head 22.
Be provided with spring card beans 23 in the grafting microcephaly 22 of installation pole 2, it has the card beans export to open on the pipe wall of grafting microcephaly 22 end, and the bottom of spring card beans 23 is connected with cassette 24, and the diameter of cassette 24 is greater than the internal diameter of card beans export, makes spring card beans 23 block in installation pole 2. The spring sleeve 25 is arranged in the pipe body of the small plug 22 and is opposite to the bean clamping outlet, the clamping seat 24 is positioned in the spring sleeve 25, the spring 26 is connected to the bottom surface of the clamping seat 24, and the spring 26 is used for ejecting the spring clamping bean 23 outwards from the bean clamping outlet. When the spring sleeve 25 is arranged, the hole is formed in the pipe wall, the spring sleeve 25 is pushed into the rod from the hole, the bottom end of the spring sleeve 25 is welded on the pipe wall through the baffle after the spring clamping bean and the spring are placed, and the hole is blocked.
Correspondingly, a connecting clamp hole is formed in the pipe wall of the inserting large end 21 of each mounting rod 2, and the adjacent mounting rods 2 are fixed with the connecting clamp holes in a clamping mode through spring clamping beans 23 after being inserted. The structure of the connecting end of the stress meter connecting rod 1 and the mounting rod 2 is the same as that of the inserting large head 21 of the mounting rod 2, and the connecting end is inserted and assembled with the inserting small head 22 end of the mounting rod 2.
The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, which is defined by the appended claims and the description of the invention.
Claims (6)
1. The utility model provides a drilling stressometer installation propelling movement pole, the propelling movement pole includes stressometer connecting rod and many installation poles, pegs graft in proper order between the installation pole, the one end and the installation pole of stressometer connecting rod peg graft, and the other end is the stressometer link, is equipped with the rotatory jaw of cross, its characterized in that, it has the recess to open on the body of rod of the stressometer link of stressometer connecting rod, the embedding installation is fixed with angle sensor in the recess, angle sensor is connected with hand-held type angle monitor, angle sensor's primary horizontal position is the level connection fixed position of stressometer connecting rod and drilling stressometer.
2. The borehole stressor mounting push rod according to claim 1, wherein the two ends of the mounting rod are respectively a large insertion head and a small insertion head, the small insertion head of the mounting rod is reduced in diameter, the outer diameter of the small insertion head is the same as the inner diameter of the large insertion head, a spring clip bean is arranged in the small insertion head, a connecting clip hole is formed in the wall of the corresponding large insertion head, and the adjacent mounting rods are fixed with the connecting clip hole through the spring clip bean after insertion.
3. The borehole stressor mounting push rod of claim 2, wherein the structure of the connecting end of the stressor connecting rod and the mounting rod is the same as the structure of the insertion head of the mounting rod.
4. The borehole stressor meter installation push rod according to claim 3, wherein a spring snap bean outlet is formed in a pipe wall of the small insertion end of the installation rod, a clamping seat is connected to the bottom of the spring snap bean, the diameter of the clamping seat is larger than the inner diameter of the snap bean outlet, a spring sleeve is arranged inside a pipe body of the small insertion end and is opposite to the snap bean outlet, the clamping seat is located in the spring sleeve, and a spring is connected to the bottom surface of the clamping seat.
5. The borehole stressor mounting and pushing rod of claim 1 wherein the tube wall of the mounting rod and the stressor connecting rod are symmetrically scored along the axial direction of the rod body and coated with red marks, respectively, and the radial plane between the marks on both sides of the rod body is the initial horizontal position of the angle sensor.
6. The borehole stressor mounting push rod of claim 1, wherein the angle sensor is connected with the hand-held angle monitor by a cable, the cable is arranged at the angle sensor connection end along the inside of the rod body of the stressor connecting rod, and penetrates out of the opening at the middle section of the rod wall of the stressor connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222610178.0U CN218156094U (en) | 2022-09-30 | 2022-09-30 | Installation push rod of borehole stressmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222610178.0U CN218156094U (en) | 2022-09-30 | 2022-09-30 | Installation push rod of borehole stressmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218156094U true CN218156094U (en) | 2022-12-27 |
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ID=84564187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222610178.0U Active CN218156094U (en) | 2022-09-30 | 2022-09-30 | Installation push rod of borehole stressmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218156094U (en) |
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2022
- 2022-09-30 CN CN202222610178.0U patent/CN218156094U/en active Active
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