CN2164034Y - Borehole stress sensor - Google Patents
Borehole stress sensor Download PDFInfo
- Publication number
- CN2164034Y CN2164034Y CN 93221603 CN93221603U CN2164034Y CN 2164034 Y CN2164034 Y CN 2164034Y CN 93221603 CN93221603 CN 93221603 CN 93221603 U CN93221603 U CN 93221603U CN 2164034 Y CN2164034 Y CN 2164034Y
- Authority
- CN
- China
- Prior art keywords
- ring
- changeable
- level
- level shape
- stress sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model relates to a borehole stress sensor. The surface of the outer side of a one level shape-changeable ring is provided with two fixed cushions; the surface of the inner side is provided with two triangular grooves whose positions are corresponding to the fixed cushions. The inner of the first-level shape-changeable ring is provided with a second-level deformation amplifying ring, the surface of the inner side of the second-level amplifying ring is adhered by four resistance strain gauges, and the first-level shape-changeable ring and the second-level deformation amplifying ring are connected by a triangular block. The utility model can carry out long distance measuring, and has the advantages of convenience for imbedding and setting, high measuring precision, simple structure and low cost.
Description
The utility model relates to a kind of drilling hole stress sensor.
Present stress test such as the ore pillar stress in the rock pressure, dam body stress in the hydroelectric project, the tunnel stress in the railway engineering mostly adopts vibrating-wire pressure cell to test, its primary structure is to fix two steel columns on an elastic sheet iron, and fixes two string wires between steel column.With the vibrating-wire pressure cell test, bury difficulty underground, go back claimed structure effect and Rigidity Matching when mounted, and the pressure cell antijamming capability is low, complex structure, the cost height, measuring error is big.
The purpose of this utility model is to provide a kind of convenient test, the drilling hole stress sensor that measuring accuracy is high.
The mode that the utility model is realized be on the outer surface of one-level Shape-changeable ring symmetry be provided with the fillet shape fixed bolster that two medial surfaces and lateral surface are respectively the garden cambered surface, on inner surface, be provided with two triangular grooves, its position is corresponding with fixed bolster, in the one-level Shape-changeable ring, be provided with a secondary distortion and amplify ring, on the inner surface of secondary distortion amplification ring, post four resistance strain gages, the one-level Shape-changeable ring amplifies ring with the secondary distortion and is connected with corner block, the drift angle of corner block is in the triangular groove that is nested on the one-level Shape-changeable ring inner surface, and the bottom surface of triangular groove is that the garden arc surface matches with the outer surface that ring is amplified in the secondary distortion.
Advantage of the present utility model is to bury underground conveniently, need not consider structure effect and Rigidity Matching problem in the installation process, can carry out Distance Test, and antijamming capability is strong, and the measuring accuracy height is simple in structure, cost is low.
The drawing explanation:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a full sectional view of the present utility model.
Below in conjunction with embodiment the utility model is described in further detail:
The utility model is to be provided with two fixed bolsters (1) what one-level Shape-changeable ring (2) outer surveyed that the surface goes up symmetry, fixed bolster (1) is the garden cambered surface for fillet shape and medial surface and lateral surface, the garden cambered surface of its lateral surface matches with the garden cambered surface in hole, the garden cambered surface of medial surface matches with the outer surface of one-level Shape-changeable ring (2), on the inner surface of one-level Shape-changeable ring (2), be provided with two triangular grooves (5), its position is corresponding with fixed bolster (1), in one-level Shape-changeable ring (2), be provided with a secondary distortion and amplify ring (3), post four resistance strain gages on secondary distortion amplification ring (3) inner surface.When holing not when stress direction deforms, by two fixed bolsters (1) distortion is passed to one-level Shape-changeable ring (2) and secondary distortion amplification ring (3), secondary distortion amplify ring (3) will up and down and about produce an equal and opposite in direction, distortion that direction is opposite in two zones, so just satisfied the requirement of full bridge measurement, to constitute full-bridge circuit.One-level Shape-changeable ring (2) amplifies ring (3) with the secondary distortion and is connected with corner block (4), the drift angle of corner block (4) is nested in the triangular groove (5) on one-level Shape-changeable ring (2) inner surface, and the bottom surface of corner block (4) is that the garden arc surface matches with the outer surface that ring (3) is amplified in the secondary distortion.
Claims (3)
1, a kind of drilling hole stress sensor, what it is characterized in that symmetry on the outer surface of one-level Shape-changeable ring (2) is provided with two fixed bolsters (1), inner surface is provided with two triangular grooves (5), its position is corresponding with fixed bolster (1), in one-level Shape-changeable ring (2), be provided with a secondary distortion and amplify ring (3), post four resistance strain gages on the inner surface of secondary distortion amplification ring (3), one-level Shape-changeable ring (2) amplifies ring (3) with the secondary distortion and is connected with corner block (4).
2, drilling hole stress sensor as claimed in claim 1, the drift angle that it is characterized in that described corner block (4) is in the triangular groove (5) that is nested on one-level Shape-changeable ring (2) inner surface, the bottom surface of corner block (4) is the garden arc surface, and the outer surface that amplifies ring (3) with the secondary distortion matches.
3, drilling hole stress sensor as claimed in claim 1 it is characterized in that described fixed bolster (1) is fillet shape, and inside and outside side is respectively the garden cambered surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93221603 CN2164034Y (en) | 1993-08-18 | 1993-08-18 | Borehole stress sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93221603 CN2164034Y (en) | 1993-08-18 | 1993-08-18 | Borehole stress sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2164034Y true CN2164034Y (en) | 1994-05-04 |
Family
ID=33800407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93221603 Expired - Fee Related CN2164034Y (en) | 1993-08-18 | 1993-08-18 | Borehole stress sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2164034Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101493366B (en) * | 2009-01-09 | 2011-01-05 | 陈洪凯 | Drilling hole stress sensor and drilling hole stress monitoring method thereof |
| CN101113674B (en) * | 2007-08-08 | 2012-04-18 | 天地科技股份有限公司 | Drilling stress meter for one-hole multiple measuring points |
| CN103954385A (en) * | 2014-04-30 | 2014-07-30 | 李恒 | Wireless passive rfid stress sensor |
| CN108917989A (en) * | 2018-07-27 | 2018-11-30 | 中国矿业大学(北京) | A kind of rigid borehole stressmeter and operating method of stress direction auto-changing |
| WO2020000990A1 (en) * | 2018-06-26 | 2020-01-02 | 山东科技大学 | Mechanical expansive type hole wall deformation sensor for hole drilling, and monitoring and using method |
-
1993
- 1993-08-18 CN CN 93221603 patent/CN2164034Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101113674B (en) * | 2007-08-08 | 2012-04-18 | 天地科技股份有限公司 | Drilling stress meter for one-hole multiple measuring points |
| CN101493366B (en) * | 2009-01-09 | 2011-01-05 | 陈洪凯 | Drilling hole stress sensor and drilling hole stress monitoring method thereof |
| CN103954385A (en) * | 2014-04-30 | 2014-07-30 | 李恒 | Wireless passive rfid stress sensor |
| WO2020000990A1 (en) * | 2018-06-26 | 2020-01-02 | 山东科技大学 | Mechanical expansive type hole wall deformation sensor for hole drilling, and monitoring and using method |
| CN108917989A (en) * | 2018-07-27 | 2018-11-30 | 中国矿业大学(北京) | A kind of rigid borehole stressmeter and operating method of stress direction auto-changing |
| CN108917989B (en) * | 2018-07-27 | 2024-01-26 | 中国矿业大学(北京) | Rigid drilling stress meter capable of automatically changing stress direction and operation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |