CN217270162U - Large-diameter pressure relief drilling hole wall deformation sensor - Google Patents
Large-diameter pressure relief drilling hole wall deformation sensor Download PDFInfo
- Publication number
- CN217270162U CN217270162U CN202123039597.5U CN202123039597U CN217270162U CN 217270162 U CN217270162 U CN 217270162U CN 202123039597 U CN202123039597 U CN 202123039597U CN 217270162 U CN217270162 U CN 217270162U
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- deformation
- base
- adjusting
- rod
- deformation measuring
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- 238000005553 drilling Methods 0.000 title claims abstract description 9
- 239000011148 porous material Substances 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 claims description 4
- 239000003245 coal Substances 0.000 abstract description 18
- 238000005259 measurement Methods 0.000 abstract description 9
- 238000012544 monitoring process Methods 0.000 abstract description 9
- 239000000523 sample Substances 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 description 6
- 239000011435 rock Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
A large-diameter pressure relief drilling hole wall deformation sensor comprises a deformation measuring base, wherein the deformation measuring base is integrally in a split sleeve form, the inside of a sleeve is provided with a taper, the deformation measuring base is provided with a strain gauge rod, and the outer wall surface of the strain gauge rod is provided with a strain gauge; an orientation adjusting conical head is arranged in the strain measurement base in a threaded manner. The utility model discloses simple structure, convenient to use, low in cost and easy to maintain have solved all sorts of problems to release drilling pore wall deformation measurement in the prior art through simple structure, have realized the angle through rotatory deformation measurement base, and the inflation deformation base can make the measuring staff probe of meeting an emergency avoid the coal body crack, with the relatively complete department contact of pore wall to improve the degree of accuracy of pore wall deformation monitoring. And deformation data for multiple directions of the borehole can be monitored simultaneously.
Description
Technical Field
The utility model relates to a mine pressure monitoring technical field especially relates to a major diameter release drilling pore wall deformation sensor.
Background
In coal mining, the internal stress of the coal bodies on two sides of the roadway is important content of mine pressure monitoring, and the method has important significance for analysis and evaluation of the stress concentration degree of the coal bodies and early warning of dynamic disasters such as rock burst.
In the present stage, a borehole stress meter is generally adopted for monitoring internal stress of a coal rock body in a coal mine, and direct monitoring data is load of the coal body on the borehole stress meter. For relatively complete coal bodies, the coal bodies can generate a larger load effect on the borehole stressometer under the local stress effect of surrounding rocks, and the monitoring data is more accurate. When the roadway coal body is broken, the internal stress of the broken coal body near the drill hole is relatively low, the load on the drill hole stress meter is relatively small, the change of monitoring data is small or almost unchanged, and the stress of the roadway side coal body cannot be accurately evaluated. However, the deformation of the hole wall of the drill hole in the crushed coal body is larger and is easier to monitor, and the deformation of the drill hole has direct correlation with the internal stress of the coal body. Therefore, inversion of coal body stress by monitoring coal body deformation is the most selective.
Chinese patent CN201710841566.0 discloses a device and a method for testing deformation of a bore hole of a rock-soil geologic body, which can monitor deformation of the bore hole wall in multiple directions, but in a coal body with many cracks, a set screw is easily inserted into the crack, so that the measured deformation has no data change or has a large error. The above drawbacks also lack corresponding solutions or devices.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art weak point, provide a simple structure, safe and reliable, convenient to use, and can carry out a major diameter release drilling pore wall deformation sensor of nimble regulation.
The equipment comprises a deformation measuring base, wherein the whole deformation measuring base is in a sleeve form, and the sleeve is internally provided with a taper and gradually converges from back to front; the deformation measuring base is in a split form, namely consists of arc-shaped blocking pieces and forms a cylinder after being folded;
the arc-shaped blocking pieces are elastically connected through springs;
the inner wall surface of the deformation measuring base is provided with threads;
the outer wall surface of the deformation measuring base is provided with a strain measuring rod, and the outer wall surface of the strain measuring rod is provided with a strain gauge; the strain gauge is connected with the detection device through signals. That is, feedback pore strain data is implemented via strain gauges.
An azimuth adjusting conical head is arranged in the strain measurement base in a screwed mode and comprises an adjusting long rod, the adjusting long rod is in a straight rod mode, an adjusting conical head is arranged at the end of the adjusting long rod, the adjusting conical head is in a round platform mode, and threads are arranged on the outer wall surface of the adjusting conical head;
the rear end of the long adjusting rod is provided with an azimuth dial.
Furthermore, the number of the arc-shaped blocking pieces is four, and the four arc-shaped blocking pieces are folded to form a cylinder.
Furthermore, the arc-shaped separation blade side is provided with an assembly groove, and two ends of the spring are respectively and fixedly arranged in the two assembly grooves corresponding to each other.
The utility model has the advantages that: the utility model discloses simple structure, convenient to use, low in cost and easy to maintain have solved all sorts of problems to release drilling pore wall deformation measurement in the prior art through simple structure, have realized the angle through rotatory deformation measurement base, and the inflation deformation base can make the measuring staff probe of meeting an emergency avoid the coal body crack, with the relatively complete department contact of pore wall to improve the degree of accuracy of pore wall deformation monitoring. And deformation data for multiple directions of the borehole can be monitored simultaneously.
Drawings
Fig. 1 is a schematic structural view of a large-diameter pressure relief borehole wall deformation sensor according to the present invention;
fig. 2 is a schematic view of a partial structure of a large-diameter pressure relief borehole wall deformation sensor according to the present invention;
fig. 3 is a schematic view of a partial structure of a large-diameter pressure relief borehole wall deformation sensor according to the present invention;
reference numerals:
1-deformation measuring base 2-azimuth adjusting conical head 3-strain measuring rod 4-adjusting long rod 5-top pressure sheet 6-spring 7-data line 8-protective sleeve 9-strain gauge 10-azimuth dial
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
Referring to fig. 1, 2 and 3, the large-diameter pressure relief drilling hole wall deformation sensor of the present invention includes a deformation measurement base 1, wherein the deformation measurement base 1 is integrally in the form of a sleeve, and the sleeve has a taper inside and gradually converges from back to front; the deformation measuring base 1 is in a split form, namely consists of arc-shaped blocking pieces and forms a cylinder after being folded;
the arc-shaped blocking pieces are elastically connected through a spring 6;
the inner wall surface of the deformation measuring base 1 is provided with threads;
the outer wall surface of the deformation measuring base 1 is provided with a strain measuring rod 3, and the outer wall surface of the strain measuring rod 3 is provided with a strain gauge 9; the strain gauge 9 is in signal connection with a detection device. I.e. feedback pore strain data is implemented by the strain gauge 9.
An azimuth adjusting conical head 2 is screwed in the strain measurement base, the azimuth adjusting conical head 2 comprises an adjusting long rod 4, the adjusting long rod 4 is in a straight rod form, an adjusting conical head is arranged at the end of the adjusting long rod 4, the adjusting conical head is in a round platform form, and threads are arranged on the outer wall surface of the adjusting conical head;
the rear end of the long adjusting rod 4 is provided with an azimuth dial 10.
Furthermore, the arc-shaped separation blades are arranged in total, and the four arc-shaped separation blades form a cylinder after being folded.
Furthermore, the arc-shaped separation blade side is provided with an assembly groove, and two ends of the spring 6 are respectively and fixedly arranged in the two assembly grooves corresponding to each other.
Preferably, a protective sleeve 8 is movably arranged in the assembling groove, and the protective sleeve 8 is in a hose form;
the spring 6 is sleeved in the protective sleeve 8.
Preferably, the strain gauge 9 is in signal connection with the detection device through the data line 7.
Preferably, the orientation dial 10 is a right angle dial divided by 90 degrees, 180 degrees, 270 degrees, 360 degrees.
Preferably, the front end face of the direction adjusting conical head 2 is integrally provided with a pressing piece 5, and the pressing piece 5 can be pressed against the bottom of the hole when in use, so that the direction adjusting conical head 2 can be twisted to generate force conveniently.
The utility model discloses during the use: the long adjusting rod 4 is rotated to lead the direction adjusting conical head 2 to advance spirally, so that the deformation measuring base 1 expands to increase the radius until the strain measuring rod 3 contacts with a rock stratum to deform, and data are measured through the strain gauge 9. After the working face pushes the measuring point, the azimuth adjusting conical head 2 is clamped at the front end of the deformation measuring base 1 by rotating the adjusting long rod 4, the whole experimental device is pulled out, and recycling is completed.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (3)
1. The utility model provides a major diameter release drilling pore wall deformation sensor, includes and warp and measures the base, warp and measure the whole sleeve form that is of base, its characterized in that: the sleeve is internally provided with a taper and gradually shrinks from back to front; the deformation measuring base is in a split form;
the deformation measuring bases are elastically connected through springs;
the inner wall surface of the deformation measuring base is provided with threads;
the outer wall surface of the deformation measuring base is provided with a strain measuring rod, and the outer wall surface of the strain measuring rod is provided with a strain gauge; the strain gauge is connected with a detection device through signals;
an orientation adjusting conical head is screwed in the deformation measuring base and comprises an adjusting long rod, the adjusting long rod is in a straight rod form, an adjusting conical head is arranged at the end of the adjusting long rod, the adjusting conical head is in a round platform form, and threads are arranged on the outer wall surface of the adjusting conical head;
the rear end of the long adjusting rod is provided with an azimuth dial.
2. The large diameter pressure relief borehole wall deformation sensor of claim 1, wherein a total of four deformation measuring bases are provided, four deformation measuring bases being closed to form a cylinder.
3. The large diameter pressure relief borehole wall deformation sensor of claim 1, wherein the deformation measuring base has a mounting groove formed in a side thereof, and two ends of the spring are respectively fixedly disposed in two corresponding mounting grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123039597.5U CN217270162U (en) | 2021-12-06 | 2021-12-06 | Large-diameter pressure relief drilling hole wall deformation sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123039597.5U CN217270162U (en) | 2021-12-06 | 2021-12-06 | Large-diameter pressure relief drilling hole wall deformation sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217270162U true CN217270162U (en) | 2022-08-23 |
Family
ID=82882329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123039597.5U Expired - Fee Related CN217270162U (en) | 2021-12-06 | 2021-12-06 | Large-diameter pressure relief drilling hole wall deformation sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217270162U (en) |
-
2021
- 2021-12-06 CN CN202123039597.5U patent/CN217270162U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220823 |