CN101113674A - Drilling stress meter for one-hole multiple measuring points - Google Patents
Drilling stress meter for one-hole multiple measuring points Download PDFInfo
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- CN101113674A CN101113674A CNA2007101200700A CN200710120070A CN101113674A CN 101113674 A CN101113674 A CN 101113674A CN A2007101200700 A CNA2007101200700 A CN A2007101200700A CN 200710120070 A CN200710120070 A CN 200710120070A CN 101113674 A CN101113674 A CN 101113674A
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- borehole
- pressure sensor
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- hydraulic jack
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Abstract
The invention relates to a borehole stress meter which can measure stress in a plurality of points comprising a hydraulic oil cylinder and a pressure sensor. The hydraulic oil cylinder is arranged vertically and one side of the lower end of the hydraulic oil cylinder is communicated with a pressure signal sensitive end at one end of the pressure sensor and the other end of the pressure sensor is connected with a signal output pin; the other side of the lower end of the hydraulic oil cylinder is provided with a check valve supplying oil to the hydraulic oil cylinder and connected with an oil pipe. A plurality of borehole stress meters are arranged in preset positions in an installation guide track in sequence when installing and a general oil pipe is connected with all check valves of all borehole stress meters and can be sent into the borehole together with the installation guide track to ensure a sensitive piston keeping vertical to the level; the installation guide track is drawn back when reaching the preset positions; each pressure oil cylinder is greased with oil till the piston rises and well contacts with the top wall of the borehole and the borehole stress meter starts to work normally, realizing synchronous installation and test in a plurality of measuring points in one borehole.
Description
Technical field
The present invention relates to monitor the sensor technical field of the mine stress of primary rock, the particularly mining rockhole stressometer of can multiple spot position, a hole installing during deep mining is specially the borehole stressmeter of a hole multimetering.
Background technology
The mine underground mining will cause that stress of primary rock field changes, and promptly adopt stress of primary rock state will be changed, and form new stress state.The coal rock layer shock hazard predicted and estimated that research deep mining bump disaster regional stress monitoring sensor has practical significance from the stress field angle.Common borehole stressmeter product all be a hole a bit, the Changing Pattern prediction of surrouding rock stress field is on a large scale then needed to monitor the stress of multiple spot position.
Borehole stressmeter generally is installed in the dark blind hole, and guarantee its sensitive direction perpendicular to horizontal plane with correct measurement by measuring pressure.Be subjected to the restriction of bit diameter and installation cost, bore diameter generally is about 20～100mm.Because the error of install to wait introducing, actual input sensitive axes after an existing point type borehole stressmeter installs and horizontal plane be out of plumb and can't predicting often, causes introducing measure error even can't measure correct stress value.In order to guarantee sensitive direction perpendicular to horizontal plane, it is necessary developing novel borehole stressmeter.
An existing point type borehole stressmeter adopts vibrating string type sensor mostly, retrained by its profile, can't accomplish to place in the boring more a plurality of borehole stressmeters to reach the purpose of multiple spot monitoring.In addition, be subjected to the influence of measuring principle, machining accuracy, vibrating string type sensor sensitivity is lower, generally is about about 0.1Mpa, often is difficult to satisfy the demand of the Changing Pattern prediction of stress field.Utility model patent " drilling hole stress sensor " (application number: 93221603.X) be on the outer surface of one-level Shape-changeable ring symmetry be provided with two fixed bolsters, inner surface is 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, post four resistance strain gages on the inner surface of secondary distortion amplification ring, the one-level Shape-changeable ring amplifies ring with the secondary distortion and is connected with corner block.This invention is simple in structure, but can't guarantee accurately to measure the hole vertical with horizontal plane two wall pressure power up and down after installing, and measure error is big.Utility model patent " boring conservator the stressometer " (patent No.: ZL87206234) form by conservator, steel chord type pressure-frequency converter, control valve, pipeline, oil pump, string wire frequency meter.Because the conservator material uses the A3 steel, causes certainty of measurement low, and sent in the hole by mounting rod during operation, the same existence can't guarantee accurately to measure the hole vertical with horizontal plane two wall pressure power up and down after installing, and measure error is big.
The borehole stressmeter of a present hole multimetering does not have concrete sell goods, does not see relevant bibliographical information yet.
Summary of the invention
The borehole stressmeter that the purpose of this invention is to provide an a kind of hole multimetering, it solves more existing borehole stressmeter can't carry out multimetering, sensitive direction is settled inconvenience, sensitivity is not high, thereby the problem of making troubles to analysis on Stress Field, can realize the borehole stressmeter of the hole multimetering that the multimetering position is installed and tested in a boring simultaneously, and be purpose only with the hardware configuration that this borehole stressmeter is provided.
For achieving the above object, the present invention takes following technical scheme:
A kind of borehole stressmeter of a hole multimetering, it includes hydraulic jack, pressure sensor, described hydraulic jack vertically is provided with, at the responsive end of the pressure signal of connection of the lower end of hydraulic jack one side and cut-in pressure sensor one end, this pressure sensor other end is connected with the signal output pin; Be connected with the one way valve of oil transportation in hydraulic jack at the lower end of hydraulic jack opposite side, this one way valve is connected with petroleum pipeline.
The object of the invention to solve the technical problems can also adopt following technical measures further to realize.
Plunger top at hydraulic cylinder is connected with top board, and this top board is long rectangle, and the top is curved, vertically is provided with along boring; Cylinder barrel upper end at hydraulic cylinder is connected with fairlead; Described one way valve is connected with hydraulic jack by the spool joint, and this one way valve is connected with petroleum pipeline by oil connection.
It also includes a total petroleum pipeline the present invention, on total petroleum pipeline, be connected with a plurality of tee junctions respectively, be connected with a hydraulic cylinder and pressure sensor on each tee junction respectively, be provided with the mounting guide rail that the cross section is arcs of recesses in cylinder lower, both sides, cylinder barrel bottom at hydraulic cylinder are protruding with the card post, inboard, imploded arcs two top at mounting guide rail is protruding with rib, and described card post enters in the rib.
The rib place, middle part of above-mentioned mounting guide rail is provided with inner opening, and opening outside being respectively equipped with in the two ends of mounting guide rail is provided with bolt connecting hole in the outer end mounting guide rail of opening outside.
During use, in a dark blind hole, a plurality of borehole stressmeters are installed to the precalculated position after, in hydraulic jack, inject machine oil by same oil pipe and rise until plunger and make borehole stressmeter withstand hole wall up and down, stop oiling then, one-way cock is automatically locked.During work, rock stratum squeezed fluid compressing cylinder plunger, promote plunger relative motion and extrusion oil cylinder inner engine oil, engine oil pressure compressive pressure sensor input pressure-sensitive diaphragm, pressure sensor collect pressure signal by the signal output pin and export a voltage signal and handle for subsequent conditioning circuit.The concrete formation of subsequent conditioning circuit is known and easy realization, and therefore, the present invention is not described specifically the concrete formation of the subsequent conditioning circuit of pressure sensor.
The present invention compares with existing some borehole stressmeters, and its outstanding substantive distinguishing features is to have designed the hydraulic jack structure and adopted the higher pressure sensor of sensitivity.The hydraulic jack bottom design has installs the card post so that can be positioned in the special mounting guide rail, sends in the boring together with mounting guide rail, extracts mounting guide rail out after reaching the precalculated position, makes borehole stressmeter easy to install and use.Hydraulic jack is a plunger type, thereby the borehole stressmeter range is reached more than tens Mpa, and satisfying the mine stress measurement must needs.Pressure sensor is selected reaction diaphragm type piezoresistive pressure sensor or capacitance pressure transducer, for use, has overcome existing vibrating wire pressure sensor sensitivity and the not high drawback of precision, for stress field Accurate Analysis on a large scale provides reliable guarantee.
The invention has the beneficial effects as follows: can realize installation of multimetering position and test in a boring simultaneously, output signal is drawn respectively, by designing the novel hydraulic oil cylinder and having adopted the higher pressure sensor of sensitivity, make the installation that borehole stressmeter can be simple and reliable, the sensitivity of borehole stressmeter can improve more than 10 times; The borehole stressmeter of this hole multimetering has advantages such as little, low in energy consumption, highly sensitive, the easy batch process of volume, adult are low, simple installation, and particularly the hydraulic jack volume is little, withstand voltage height; Pressure sensor has very high integrated level, and output signal is parallel fully, and volume is very little and highly sensitive.Even one of them or several borehole stressmeter catastrophic failure do not influence other borehole stressmeter operate as normal yet.Therefore, can realize a hole multiple spot installation easily.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is that Figure 1A-A is to the sectional structure schematic diagram.
Fig. 3 is stressometer of the present invention and mounting guide rail sectional arrangement drawing structural representation.
Fig. 4 is the sectional structure schematic diagram of mounting guide rail.
Fig. 5 is Fig. 4 plan structure schematic diagram.
Fig. 6 is the actual user mode schematic diagram of stressometer of the present invention.
The specific embodiment
Referring to Fig. 1～shown in Figure 6: a kind of borehole stressmeter of a hole multimetering, it includes hydraulic jack 14, pressure sensor 15, pressure sensor is selected pressure resistance type or capacitance pressure transducer, for use, described hydraulic jack 14 vertically is provided with, at the responsive end 17 of the pressure signal of connection of the lower end of hydraulic jack 14 side and cut-in pressure sensor 15 1 ends, these pressure sensor 15 other ends are connected with signal output pin 16; Be connected with the one way valve 11 of oil transportation in hydraulic jack at the lower end of hydraulic jack 14 opposite side, this one way valve 11 and diameter are that the petroleum pipeline 13 of Φ 6 is connected.
Plunger 3 tops at hydraulic cylinder are connected with top board 6, and this top board 6 is long rectangle, and the top is curved, vertically are provided with along boring 25, can guarantee fully to contact with the roof of holing; Cylinder barrel 2 upper ends at hydraulic cylinder are connected with fairlead 7; Described one way valve 11 is connected with hydraulic jack 14 by spool joint 5, and this one way valve 11 is connected with petroleum pipeline 13 by oil connection 12.
It also includes total petroleum pipeline 26 of a rigidity, on total petroleum pipeline 26, be connected with a plurality of tee junctions 23 respectively, be connected with a hydraulic cylinder and pressure sensor on each tee junction respectively, be provided with the mounting guide rail 20 that the cross section is arcs of recesses in cylinder lower, both sides, cylinder barrel bottom at hydraulic cylinder are protruding with card post 8, inboard, imploded arcs two top at mounting guide rail 20 is protruding with rib 18, and described card post 8 enters in the rib 18.
The rib place, middle part of described mounting guide rail is provided with inner opening 22, be used to make card post 8 to enter in the mounting guide rail by inner opening 22, opening 21 outside in the two ends of mounting guide rail 20, being respectively equipped with, be provided with bolt connecting hole 19 in the outer end mounting guide rail of opening outside, the bolt connecting hole 19 at mounting guide rail two ends is used for interconnecting between the mounting guide rail.
When the present invention installs, a plurality of borehole stressmeters are positioned over precalculated position in the mounting guide rail successively, and with same total petroleum pipeline 26 parallel one way valves that connect all borehole stressmeters, send in the boring 25 together with mounting guide rail 20, guarantee that responsive plunger 3 is all the time perpendicular to horizontal plane.Extract mounting guide rail 25 out after reaching the precalculated position, by the oiling in each oil pressure cylinder 14 of hydraulic hand-pump 24 and total petroleum pipeline 26, plunger 3 is raised up to contact with the roof of holing to stop oiling after good, nonreturn valve core 10 is automatically locked under the effect of spring, and borehole stressmeter begins operate as normal.
Claims (4)
1. the borehole stressmeter of a hole multimetering, it includes hydraulic jack (14), pressure sensor (15), it is characterized in that: described hydraulic jack (14) is vertical to be provided with, at the responsive end of pressure signal (17) of connection of the lower end of hydraulic jack (a 14) side and cut-in pressure sensor (15) one ends, this pressure sensor (15) other end is connected with signal output pin (16); Be connected with the one way valve (11) of oil transportation in hydraulic jack at the lower end opposite side of hydraulic jack (14), this one way valve (11) is connected with petroleum pipeline (13).
2. the borehole stressmeter of a hole multimetering according to claim 1 is characterized in that: plunger (3) top at hydraulic cylinder is connected with top board (6), and this top board (6) is long rectangle, and the top is curved, vertically is provided with along boring (25); Cylinder barrel (2) upper end at hydraulic cylinder is connected with fairlead (7); Described one way valve (11) is connected with hydraulic jack (14) by spool joint (5), and this one way valve (11) is connected with petroleum pipeline (13) by oil connection (12).
3. the borehole stressmeter of a hole multimetering according to claim 1 and 2, it is characterized in that: it also includes a total petroleum pipeline (26), on total petroleum pipeline (26), be connected with a plurality of tee junctions (23) respectively, be connected with a hydraulic cylinder and pressure sensor on each tee junction respectively, be provided with the mounting guide rail (20) that the cross section is arcs of recesses in cylinder lower, both sides, cylinder barrel bottom at hydraulic cylinder are protruding with card post (8), inboard, imploded arcs two top at mounting guide rail (20) is protruding with rib (18), and described card post (8) enters in the rib (18).
4. the borehole stressmeter of a hole multimetering according to claim 3, it is characterized in that: the rib place, middle part of described mounting guide rail is provided with inner opening (22), opening (21) outside being respectively equipped with in the two ends of mounting guide rail is provided with bolt connecting hole (19) in the outer end mounting guide rail of opening outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101200700A CN101113674B (en) | 2007-08-08 | 2007-08-08 | Drilling stress meter for one-hole multiple measuring points |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101200700A CN101113674B (en) | 2007-08-08 | 2007-08-08 | Drilling stress meter for one-hole multiple measuring points |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101113674A true CN101113674A (en) | 2008-01-30 |
| CN101113674B CN101113674B (en) | 2012-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101200700A Expired - Fee Related CN101113674B (en) | 2007-08-08 | 2007-08-08 | Drilling stress meter for one-hole multiple measuring points |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606149A (en) * | 2012-03-20 | 2012-07-25 | 长江水利委员会长江科学院 | Storage type geostress testing method and storage type geostress testing device by means of hole-wall strain method |
| CN102704851A (en) * | 2012-06-07 | 2012-10-03 | 三一重工股份有限公司 | Bottom expanding drill bit and rotary drilling machine |
| CN101526009B (en) * | 2009-04-09 | 2012-10-24 | 西安科技大学 | Wall rock destabilization acousto-optic-electric integrated monitoring system and monitoring method thereof |
| CN102852549A (en) * | 2012-09-26 | 2013-01-02 | 辽宁工程技术大学 | Deep hole multi-stress probe conveying device |
| CN104879120A (en) * | 2015-06-29 | 2015-09-02 | 华北理工大学 | Split type two-way dipmeter for hole drilling |
| CN105486431A (en) * | 2015-12-30 | 2016-04-13 | 山东科技大学 | Recycle type borehole stress monitoring device and monitoring method |
| CN105927219A (en) * | 2016-06-30 | 2016-09-07 | 华北科技学院 | Device for detecting stress distribution condition in front of excavation working face |
| CN107304681A (en) * | 2016-04-22 | 2017-10-31 | 天地科技股份有限公司 | Coal petrography gas composite power disaster is with position monitoring and pre-alarming method |
| CN108181027A (en) * | 2018-01-05 | 2018-06-19 | 北京科技大学 | A kind of type vibration wire borehole stressmeter mounting head |
| CN111810127A (en) * | 2020-07-06 | 2020-10-23 | 北京安科兴业科技股份有限公司 | Laser positioning drilling stress meter mounting rod and mounting method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87206234U (en) * | 1987-04-14 | 1988-05-25 | 煤炭工业部煤炭科学研究院北京开采研究所 | Stress gauge for drilling machine oil pillow |
| US5103428A (en) * | 1991-01-16 | 1992-04-07 | Mobil Oil Corporation | Method for optimizing well production rates |
| CN2164034Y (en) * | 1993-08-18 | 1994-05-04 | 国家建筑材料工业局咸阳非金属矿研究所 | Borehole stress sensor |
| CN2242453Y (en) * | 1995-05-30 | 1996-12-11 | 山东矿业学院 | Strain type stress sensor for rigid drilling hole |
| CN201096558Y (en) * | 2007-08-08 | 2008-08-06 | 天地科技股份有限公司 | One hole multiple point measuring borehole stress meter |
-
2007
- 2007-08-08 CN CN2007101200700A patent/CN101113674B/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101526009B (en) * | 2009-04-09 | 2012-10-24 | 西安科技大学 | Wall rock destabilization acousto-optic-electric integrated monitoring system and monitoring method thereof |
| CN102606149A (en) * | 2012-03-20 | 2012-07-25 | 长江水利委员会长江科学院 | Storage type geostress testing method and storage type geostress testing device by means of hole-wall strain method |
| CN102704851A (en) * | 2012-06-07 | 2012-10-03 | 三一重工股份有限公司 | Bottom expanding drill bit and rotary drilling machine |
| CN102852549A (en) * | 2012-09-26 | 2013-01-02 | 辽宁工程技术大学 | Deep hole multi-stress probe conveying device |
| CN102852549B (en) * | 2012-09-26 | 2014-06-18 | 辽宁工程技术大学 | Deep hole multi-stress probe conveying device |
| CN104879120A (en) * | 2015-06-29 | 2015-09-02 | 华北理工大学 | Split type two-way dipmeter for hole drilling |
| CN105486431A (en) * | 2015-12-30 | 2016-04-13 | 山东科技大学 | Recycle type borehole stress monitoring device and monitoring method |
| CN105486431B (en) * | 2015-12-30 | 2017-09-29 | 山东科技大学 | A kind of recoverable drilling hole stress monitoring device and monitoring method |
| CN107304681A (en) * | 2016-04-22 | 2017-10-31 | 天地科技股份有限公司 | Coal petrography gas composite power disaster is with position monitoring and pre-alarming method |
| CN105927219A (en) * | 2016-06-30 | 2016-09-07 | 华北科技学院 | Device for detecting stress distribution condition in front of excavation working face |
| CN105927219B (en) * | 2016-06-30 | 2023-08-25 | 华北科技学院 | Detection device for front stress distribution condition of mining working face |
| CN108181027A (en) * | 2018-01-05 | 2018-06-19 | 北京科技大学 | A kind of type vibration wire borehole stressmeter mounting head |
| CN108181027B (en) * | 2018-01-05 | 2023-10-13 | 北京科技大学 | Vibrating wire type drilling stress meter mounting head |
| CN111810127A (en) * | 2020-07-06 | 2020-10-23 | 北京安科兴业科技股份有限公司 | Laser positioning drilling stress meter mounting rod and mounting method thereof |
| CN111810127B (en) * | 2020-07-06 | 2023-11-24 | 北京安科兴业科技股份有限公司 | Laser positioning drilling stress meter mounting rod and mounting method thereof |
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| Publication number | Publication date |
|---|---|
| CN101113674B (en) | 2012-04-18 |
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