CN102507049A - Drill hole vector stress sensor for mine - Google Patents
Drill hole vector stress sensor for mine Download PDFInfo
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- CN102507049A CN102507049A CN2011103340904A CN201110334090A CN102507049A CN 102507049 A CN102507049 A CN 102507049A CN 2011103340904 A CN2011103340904 A CN 2011103340904A CN 201110334090 A CN201110334090 A CN 201110334090A CN 102507049 A CN102507049 A CN 102507049A
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- strain gauge
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Abstract
The invention relates to a drill hole vector stress sensor for a mine, which is strong, durable, convenient to install and capable of achieving omni-directional vector measurement. The drill hole vector stress sensor for the mine comprises a casing. A core body is arranged in the casing and provided with an integrated circuit module connected with the core body. The core body comprises a balance beam fixing support, and balance beam sensors are fixed on the balance beam fixing support and provided with force measurement nuts. Three balance beam sensors are fixed in a mode with 120-degree included angles formed between the balance beam sensors, and the integrated circuit module comprises two (analog to digital) A/D conversion modules and an electronic compass module which are respectively connected with the balance beam sensors. The casing is made of stainless steel materials. The core body and the integrated circuit module are arranged in the casing, and two ends of the casing are sealed by means of glue injection.
Description
One, technical field:
The present invention relates to a kind of strain gauge, especially relate to a kind of mining boring vector strain gauge.
Two, background technology:
In the background technology, in the coal mining industry, seam mining makes the stratum that deformation take place; But when knowing mined bed pressure-bearing size, blindly do not exploit; Cause the coal seam to cave in easily, cause mine accident, serious threat miner's property and life security because of bearing upper strata pressure.
Mining boring vector strain gauge mainly is used for measuring the variation that coal column stress is reserved in the colliery, or is used for measuring foundation ditch rock mass or earth foundation, and the situation of change of stress before and after excavation is that one of essential instrument and equipment of observation is pressed in the coal mine work area ore deposit.
Domestic and international at present existing many enterprises and individual measure this field to drilling hole stress and explore and study, and all kinds of borehole stressmeters with difference in functionality characteristics that released one after another.ZYJY-10 oil pressure pillow formula borehole stressmeter that ore deposit press tool company limited of Tai HTC produces and digital display borehole stressmeter, the TW69-Z-1 borehole stressmeter of Chinese and Western, Beijing Tai'an Technology Service Co., Ltd, the ZKCL borehole stressmeter of Shandong Sai Sen Science and Technology Ltd., the ZYJ-25 borehole stressmeter of continent, Shandong, Tai mechanical electronic equipment company limited etc. are in the developing direction of all having represented domestic this technical field of taseometer in varying degrees; And have certain intrinsic advantage, but also have certain defective simultaneously:
1, fragile, general sensor core adopts the foil gauge design, in installation process, just is damaged easily;
2, be difficult for installing, sensor orientation is difficult to confirm.General sensor need imprinting axially come to confirm sensor orientation on bamboo pole in installation process, operate cumbersomely, wastes time and energy.
Three, summary of the invention:
The present invention provides a kind of mining boring vector strain gauge in order to solve the weak point in the above-mentioned background technology, and it is durable, and is easy for installation, realizes omnidirectional's vector measurement.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is:
A kind of mining boring vector strain gauge; It is characterized in that: comprise shell; Be provided with core body in the shell, core body is provided with the integrated circuit modules that is connected with core body, and core body comprises the balance beam fixed mount; The aequum sensor is fixed on the balance beam fixed mount, and the aequum sensor is provided with the dynamometry nut.
Above-mentioned aequum sensor is provided with three, is that 120 ° of angles are fixed between three balance beam sensors.
The said integrated circuit module is two A/D modular converters and an electrical compass module, is connected with the aequum sensor respectively.
Above-mentioned shell is selected stainless steel material for use.
Above-mentioned core body and integrated circuit modules are arranged on enclosure, shell two ends sealant pouring and sealing.
Compared with prior art, the advantage and the effect that have of the present invention is following:
1, on each balance beam sensor of sensor an area being installed respectively is 1cm
2The dynamometry nut, through the stressed extruding balance of dynamometry nut beam sensor, can calculate each balance beam sensor pressure on unit area, i.e. stress.
2, to have 3 angles be 120 ° balance beam sensor particular design to sensor, realizes the comprehensive dynamometry of omnirange on the same plane.Stress to 3 directions in the boring calculates through synthetic vector, obtains major principal stress and least principal stress.
3, increase the electronic compass part in the middle of the sensor, increased the direction judgement of power newly.Calculating major principal stress and least principal stress simultaneously, can judge the direction of major principal stress and least principal stress.
4, can carry out remote transmission.Supporting ground data process software receives the stress data that collects, and shows and analyzing and processing with modes such as tabulation, curve map, forms.
5, sensor adopts stainless steel casing, and is durable, in installation process, can not install and use environment and is damaged because of abominable.
Four, description of drawings:
Fig. 1 is the scantling plan of mining boring vector strain gauge.
Fig. 2 is the core figure of mining boring vector strain gauge.
Fig. 3 is the core body A-A cut-open view of mining boring vector strain gauge;
Fig. 4 is the stereographic map of the core body of mining boring vector strain gauge.
Among the figure, 1. shell, 2. core body, 3. integrated circuit modules, 4. balance beam sensor, 5. dynamometry nut, 6. pressure gauge bonnet, 7. cable, 8. cable lock, 9. balance beam fixed mount.
Five, embodiment:
The present invention is a kind of mining boring vector strain gauge, and it is 120 ° of three balance beam sensors that its core body adopts angle, and a 1cm respectively is installed on each balance beam sensor
2The dynamometry nut; And in circuit, increase the electronic compass part; Can calculate major principal stress and direction, least principal stress and direction on a certain plane; And can carry out remote transmission, solved the technical matters that sensor core damages easily in the prior art, direction of measurement is single, data can not be extracted.
Referring to Fig. 1; Mining boring vector strain gauge is made up of integrated circuit modules 3, core body 2 and shell 1 three parts;, the model of integrated circuit modules 3 is MSP430F149, core body 2 is installed in shell 1 inside with integrated circuit modules 3; The two ends sealant pouring and sealing is not so that inner measurement component and the integrated circuit of protection receives ectocine.Shell 1 selects for use stainless steel can protect internal structure not to be out of shape because of the extruding that receives external force.Referring to Fig. 2, Fig. 3 and Fig. 4, core body 2 is made up of balance beam fixed mount 9, balance beam sensor 4 and dynamometry nut 5.Three aequum sensors 4 are fixed on the balance beam fixed mount 9 through nut, and dynamometry nut 5 is installed on the main body of each balance beam sensor 4.When dynamometry nut 5 receives the external force extruding; Force aequum sensor 4 that deformation takes place; Produce the vector mechanical change, the inner integrated circuit modules of measurement component passes through the vector Mechanics Calculation, calculates major principal stress and least principal stress; Measurement component inside has increased electronic compass, is calculating the force direction that receives of major principal stress and least principal stress.Integrated circuit modules 3 among Fig. 1 is made up of two A/D conversions and an electrical compass module, accomplishes signals collecting, A/D conversion, calculating and signal transfer functions, and it is outside that signal transfers signals to boring through the cable 7 among the figure.The supporting substation of outside connection receives signal, and it is resolved the back direct digital display.Damage this problem when mounted easily to sensor, this mining boring vector strain gauge changes foil gauge mode in the past into the balance beam approach sensor on core body, and three balance beam sensors 4 are fixed with 120 ° of angles; Be separately installed with dynamometry nut 5 on each balance beam sensor 4; Dynamometry nut 5 receives the external force extruding, and deformation takes place corresponding with it balance beam sensor 4, and two A/D modular converters that the core body upper parallel is installed are respectively gathered two paths of signals; Through conversion and processing; Convert force signal into electric signal, internal circuit calculates major principal stress and least principal stress through calculating.With the electrical compass module of the parallel installation of A/D module, increased the direction identification ability newly.Make sensor when measuring major principal stress, can measure the direction of major principal stress and least principal stress, solved the problem of the directionless judgement of general taseometer.
When the present invention installs; A plurality of mining boring vector strain gauges are installed on precalculated position in the boring successively; And connect the output line of all taseometers with same cable 7; Be pulled to substation or other support equipments on ground from cable lock 8 straight lines, the data that all strain gauges in holing collect are carried out analyzing and processing.All strain gauges in the boring are connected in parallel, and each strain gauge works independently, and does not disturb mutually.When hole a place or many places receive external force; The dynamometry nut 5 of one or more strain gauges 4 at first is squeezed in the boring, forces on the corresponding with it balance beam sensor deformation takes place, at this moment; Two-way A/D modular converter receives signal; And it is carried out conversion Calculation handle, draw major principal stress and least principal stress, the direction of electronic compass identification major principal stress and least principal stress; And data are transferred to the main frame on ground through cable, in the main frame software kit with variety of way data that display analysis is surveyed such as charts.
The present invention measures the stressed size in coal seam through mining boring vector strain gauge; When if dynamics can not tolerance range in the survey coal seam in the hole; The ore deposit in time the exploiting field corresponding measure or the cancellation coal seam production program; This has reduced the generation of colliery cave-in accident to a great extent, thereby has guaranteed the safety of people's lives and properties.
Mining boring vector strain gauge mainly is used for measuring the variation that coal column stress is reserved in the colliery, or is used for measuring foundation ditch rock mass or earth foundation, and the situation of change of stress before and after excavation is that one of essential instrument and equipment of observation is pressed in the coal mine work area ore deposit.
Claims (5)
1. mining boring vector strain gauge; It is characterized in that: comprise shell (1); Be provided with core body (2) in the shell (1), core body (2) is provided with the integrated circuit modules (3) that is connected with core body, and core body (2) comprises balance beam fixed mount (9); Aequum sensor (4) is fixed on the balance beam fixed mount (9), and aequum sensor (4) is provided with dynamometry nut (5).
2. mining boring vector strain gauge according to claim 1, it is characterized in that: aequum sensor (4) is provided with three, is that 120 ° of angles are fixed between three balance beam sensors (4).
3. mining boring vector strain gauge according to claim 1 and 2 is characterized in that: integrated circuit modules (3) is two A/D modular converters and an electrical compass module, is connected with the aequum sensor respectively.
4. mining boring vector strain gauge according to claim 3, it is characterized in that: shell (1) is selected stainless steel material for use.
5. mining boring vector strain gauge according to claim 4 is characterized in that: core body (2) and integrated circuit modules (3) are arranged on shell (1) inside, shell (1) two ends sealant pouring and sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103340904A CN102507049A (en) | 2011-10-28 | 2011-10-28 | Drill hole vector stress sensor for mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103340904A CN102507049A (en) | 2011-10-28 | 2011-10-28 | Drill hole vector stress sensor for mine |
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| Publication Number | Publication Date |
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| CN102507049A true CN102507049A (en) | 2012-06-20 |
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| CN2011103340904A Pending CN102507049A (en) | 2011-10-28 | 2011-10-28 | Drill hole vector stress sensor for mine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901602A (en) * | 2012-10-19 | 2013-01-30 | 徐州五洋科技股份有限公司 | Hall type oil and gas pressure sensor |
| CN102901474A (en) * | 2012-10-10 | 2013-01-30 | 山东科技大学 | Mine drilling micro-displacement measuring instrument |
| CN104879120A (en) * | 2015-06-29 | 2015-09-02 | 华北理工大学 | Split type two-way dipmeter for hole drilling |
| CN108507708A (en) * | 2018-03-30 | 2018-09-07 | 西安科技大学 | A kind of drilling in coal and rock stress measurement device and its measurement method |
Citations (6)
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|---|---|---|---|---|
| US3624684A (en) * | 1969-11-19 | 1971-11-30 | Us Interior | Borehole deformation gage |
| US3914993A (en) * | 1973-06-25 | 1975-10-28 | Us Interior | Rigid testing machine |
| SU863859A1 (en) * | 1979-10-19 | 1981-09-15 | Уральский научно-исследовательский и проектный институт медной промышленности "УНИПРОМЕДЬ" | Device for measuring radial deformation of well walls |
| CN86100074A (en) * | 1986-01-10 | 1987-10-21 | 河南省地震局 | String-frequency borehole strainmeter |
| CN2302509Y (en) * | 1997-01-22 | 1998-12-30 | 煤炭科学研究总院北京开采研究所 | Steel wire anchorage cable (bolt) dynamometer |
| CN101581219A (en) * | 2008-05-16 | 2009-11-18 | 中国科学院力学研究所 | Device and method for measurement while drilling of ground stress |
-
2011
- 2011-10-28 CN CN2011103340904A patent/CN102507049A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3624684A (en) * | 1969-11-19 | 1971-11-30 | Us Interior | Borehole deformation gage |
| US3914993A (en) * | 1973-06-25 | 1975-10-28 | Us Interior | Rigid testing machine |
| SU863859A1 (en) * | 1979-10-19 | 1981-09-15 | Уральский научно-исследовательский и проектный институт медной промышленности "УНИПРОМЕДЬ" | Device for measuring radial deformation of well walls |
| CN86100074A (en) * | 1986-01-10 | 1987-10-21 | 河南省地震局 | String-frequency borehole strainmeter |
| CN2302509Y (en) * | 1997-01-22 | 1998-12-30 | 煤炭科学研究总院北京开采研究所 | Steel wire anchorage cable (bolt) dynamometer |
| CN101581219A (en) * | 2008-05-16 | 2009-11-18 | 中国科学院力学研究所 | Device and method for measurement while drilling of ground stress |
Non-Patent Citations (1)
| Title |
|---|
| 钟作武等: "深部岩体三维地应力测量技术", 《矿山压力与顶板管理》, no. 3, 31 March 2005 (2005-03-31) * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901474A (en) * | 2012-10-10 | 2013-01-30 | 山东科技大学 | Mine drilling micro-displacement measuring instrument |
| CN102901474B (en) * | 2012-10-10 | 2015-05-20 | 山东科技大学 | Mine drilling micro-displacement measuring instrument |
| CN102901602A (en) * | 2012-10-19 | 2013-01-30 | 徐州五洋科技股份有限公司 | Hall type oil and gas pressure sensor |
| CN104879120A (en) * | 2015-06-29 | 2015-09-02 | 华北理工大学 | Split type two-way dipmeter for hole drilling |
| CN108507708A (en) * | 2018-03-30 | 2018-09-07 | 西安科技大学 | A kind of drilling in coal and rock stress measurement device and its measurement method |
| CN108507708B (en) * | 2018-03-30 | 2020-10-23 | 西安科技大学 | Coal rock drilling stress measuring device and measuring method thereof |
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Application publication date: 20120620 |