CN102901474B - Mine drilling micro-displacement measuring instrument - Google Patents
Mine drilling micro-displacement measuring instrument Download PDFInfo
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- CN102901474B CN102901474B CN201210380578.5A CN201210380578A CN102901474B CN 102901474 B CN102901474 B CN 102901474B CN 201210380578 A CN201210380578 A CN 201210380578A CN 102901474 B CN102901474 B CN 102901474B
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Abstract
The invention discloses a mine drilling micro-displacement measuring instrument which comprises an installation body, a housing, a fixed block, a balance beam sensor, an elastomer and a circuit module, wherein the installation body is a metal plate, and the housing is fixedly arranged at one end of the installation body; the fixed block is arranged in the housing and fixedly arranged on the installation body; the balance beam sensor is arranged in the housing and fixedly arranged on the fixed block; the elastomer is strip-shaped, one end of the elastomer is fixedly arranged on the balance beam sensor, and the other end of the elastomer stretches out of the housing; and the circuit module is electrically connected with the balance beam sensor, and comprises an A/D (analogue/digital) conversion chip, a processor chip, a clock chip, a memory chip, an RS485 chip and a power supply chip.
Description
Technical field
The present invention relates to a kind of displacement measuring device of mine underground, particularly relating to a kind of measurement mechanism for measuring coal mine work area front micrometric displacement.
Background technology
In the mine of coal mining, in the motion of stope surrounding rock body and country rock, the existence of high stress areas is the basic reason causing colliery that the dynamic disasters such as roof caving, rock burst, coal and gas prominent occur.Therefore, the regularity of distribution of stress (support pressure) in monitor face surrounding rock (mainly coal body), the position in forecast high stress concentrations region is the prerequisite of the great dynamic disaster in prevention and corntrol colliery.
Rock pressure [in mine theoretical research result shows: after adopting, in country rock (coal body), support pressure certainly will cause the compression with coal body that shifts near of roof and floor, by monitoring the amount of shifting near of roof and floor and shifting near the high peak position that speed (decrement of coal body and compression speed) can infer support pressure in coal body.
Mining micro displacement meter mainly utilizes above-mentioned principle, boring is arranged in the coal body of workplace front, measure decrement and the compression speed of coal body in boring, the position of the particularly pressure spikes of the abutment pressure distribution Changing Pattern in coal body is inferred and predicted, for coal mine dynamic disaster prevention and control provide basic data, it is one of essential instrument of colliery pressure observation.
At present both at home and abroad still not to the instrumentation that the micrometric displacement of workplace front coal body is measured.The method always adopted at present be in tunnel preset mechanical dial gauge to measure the displacement of roof and floor, due to comprehensive mechanical coal mining, can not arrange these measurement points in tunnel, be badly in need of adopting new measuring method and instrument, adapt to the needs of novel coal winning technology.
Summary of the invention
For solving the problem, the present invention proposes a kind of mining drilling micro displacement meter, comprises and installs body, shell, fixed block, balance beam sensor, elastic body and circuit module,
Described installation body is sheet metal, and described shell is fixedly installed on one end of described installation body;
Described fixed block arranges in the enclosure and is fixedly installed on to be installed on body, and described balance beam sensor setting in the enclosure and be fixedly installed on described fixed block;
Described elastic body is strip, and its one end is fixedly installed on balance beam sensor, and the other end stretches out shell;
Described circuit module and described balance beam sensor are electrically connected, and described circuit module comprises A/D conversion chip, processor chips, clock chip, memory chip, RS485 chip and power supply chip.
The invention has the advantages that:
1, volume is little, can be arranged in coal body boring, not be subject to the impact of fully-mechanized mining working equipment moving and pedestrian.
2, adopt balance beam sensor, precision is high, and volume is little, is applicable to subsurface environment;
3, balance beam sensor is provided with elastic body, when coal body is subject to External Force Acting distortion, be applied to elastic body, simultaneously by Shear transfer to balance beam sensor, according to ess-strain principle, power suffered on balance beam sensor can be calculated through processing of circuit, its size is directly proportional to elastomeric deflection, realize the conversion of deflection to power, thus reach the measurement that fricton-tight parts achieve displacement, avoid balance beam sensor to be exposed in the rugged environment of down-hole simultaneously, effectively extend sensor life-time;
4,24 A/D conversion chips, 16 low-power consumption MCU chip, clock chip, mass storage chip, RS485 chips are contained in circuit, achieve high-precision data acquisition, calculating, storage, and realize exchanges data by RS485 communication with other equipment.
Accompanying drawing explanation
Accompanying drawing 1 is the outside drawing of micro displacement meter of the present invention;
Accompanying drawing 2 is that the A-A of accompanying drawing 1 is to cut-open view.
Reference numeral is as follows:
1-balance beam sensor, 2-fixed block, 3-installs body, 4-elastic body, 5-stud, 6-circuit module, 7-shell, 8-dust protection rubber circle, 9-cable lock fixed block, 10-cable lock, 11-horizontal segment, 12-tilting section, 13-turn section.
Embodiment
See accompanying drawing 1-2, it describes an embodiment of micro displacement meter of the present invention.
Micro displacement meter comprises installs body, shell, fixed block, balance beam sensor, elastic body and circuit module, and installing body is elongated metal plate, and shell is cartridge type substantially, and it is fixedly installed on the one end of installing body; Fixed block arranges in the enclosure and is fixedly installed on to be installed on body, balance beam sensor setting in the enclosure and be fixedly installed in the plane of fixed block, fixed block provides installation site easily for balance beam sensor, and play cushioning effect, avoid vibrations to produce interference and impact to measurement result;
Elastic body is hard strip sheet metal, as steel disc or alloy sheet etc., its one end is fixedly installed on the measuring junction of balance beam sensor, the other end stretches out shell, the position of stretching out shell can arrange dust protection rubber circle when needed, preferred elastomer is divided into three sections, i.e. horizontal segment, tilting section and turn section, horizontal segment is positioned at shell, be fixedly connected with balance beam sensor, tilting section stretches out shell, itself and horizontal segment have certain angle, angular range is at 15 ° ~ 30 °, preferably 25 °, turn section is positioned at the end of tilting section, the angular range of itself and tilting section is at 90 ° ~ 115 °, preferably 100 °, the setting of above-mentioned three sections and the angle between it make elastomeric rigidity be strengthened, be more suitable for down-hole to use, and this setup adds the scope of elastomeric resilient distortion, thus add the measurement range of measuring instrument,
Circuit module is fixed on by stud to be installed on body, itself and balance beam sensor are electrically connected, for detecting sensor measurement result and analyzed, recorded and sent, circuit module can comprise A/D conversion chip, processor chips, clock chip, memory chip, RS485 chip and power supply chip; Connection in series-parallel for the ease of multiple measuring instrument uses and contacts with host computer, the end of measuring instrument is provided with the cable lock for stube cable, it is arranged on cable lock fixed block, cable lock fixed block is directly fixedly mounted on to be installed on body, and cable lock is electrically connected in the inside of shell and circuit module.
The elastic body in measuring instrument, balance beam sensor installed, be out of shape when being subject to External Force Acting, simultaneously by suffered Shear transfer to balance beam sensor, according to ess-strain principle, power suffered on balance beam sensor can be calculated through processing of circuit, its size is directly proportional to elastomeric deflection, and circuit module through being converted to changing value, and calculates displacement variable.
When the present invention installs, coal body or rock are got the hole of pre-sizing and length, one or more mining micro displacement meter is installed on precalculated position in boring successively, to the data analysis process that all micro displacement meters in boring collect.All mining micro displacement meter in boring is connected in parallel, and each mining micro displacement meter works independently, and does not interfere with each other.When boring one place or many places are subject to external force and produce distortion, in boring, first the elastic body of one or more mining micro displacement meter is squeezed, and then force on it corresponding balance beam sensor deformation occurs, now, circuit board A/D modular converter Received signal strength, and conversion computing is carried out to it, draw displacement variable, and data are transferred to the main frame on ground by cable, survey data with various mode display analysis such as charts in main frame software kit.
The present invention measures coal deformation amount size by mining micro displacement meter, can the scope of accurate forecast peak stress and position, for reasonable Arrangement tunnel and getting working face provide foundation, the generation of the disasters such as prevention rock burst, thus ensure the safety in production of mine.
The above; be only patent of the present invention preferably embodiment; but the protection domain of patent of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope of patent diselosesll of the present invention; the change that can expect easily or replacement, within the protection domain that all should be encompassed in patent of the present invention.
Claims (1)
1. a mining drilling micro displacement meter, is characterized in that: comprise and install body, shell, fixed block, balance beam sensor, elastic body and circuit module,
Described installation body is sheet metal, and described shell is fixedly installed on one end of described installation body;
Described fixed block arranges in the enclosure and is fixedly installed on to be installed on body, and described balance beam sensor setting in the enclosure and be fixedly installed on described fixed block;
Described elastic body is strip, is divided into horizontal segment, tilting section and turn section, and described elastomeric one end is fixedly installed on described balance beam sensor, and the other end stretches out shell;
Described circuit module and described balance beam sensor are electrically connected, and described circuit module comprises A/D conversion chip, processor chips, clock chip, memory chip, RS485 chip and power supply chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210380578.5A CN102901474B (en) | 2012-10-10 | 2012-10-10 | Mine drilling micro-displacement measuring instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210380578.5A CN102901474B (en) | 2012-10-10 | 2012-10-10 | Mine drilling micro-displacement measuring instrument |
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| Publication Number | Publication Date |
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| CN102901474A CN102901474A (en) | 2013-01-30 |
| CN102901474B true CN102901474B (en) | 2015-05-20 |
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| CN201210380578.5A Active CN102901474B (en) | 2012-10-10 | 2012-10-10 | Mine drilling micro-displacement measuring instrument |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111964620B (en) * | 2020-08-07 | 2022-08-30 | 煤炭科学技术研究院有限公司 | Near-field coal rock displacement dynamic monitoring device and method in coal and gas outburst process |
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| 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 |
| CN86108843A (en) * | 1986-12-22 | 1988-07-06 | 东北工学院 | The measurement method of ground response curve and probe thereof |
| CN2242453Y (en) * | 1995-05-30 | 1996-12-11 | 山东矿业学院 | Strain type stress sensor for rigid drilling hole |
| CN1851426A (en) * | 2006-06-02 | 2006-10-25 | 安里千 | Stress monitoring instrument |
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| CN101532810A (en) * | 2009-04-02 | 2009-09-16 | 中国矿业大学 | Rock stratum deep hole displacement monitor and quick mounting method |
| CN102507049A (en) * | 2011-10-28 | 2012-06-20 | 西安欣源测控技术有限公司 | Drill hole vector stress sensor for mine |
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2012
- 2012-10-10 CN CN201210380578.5A patent/CN102901474B/en active Active
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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 |
| CN86108843A (en) * | 1986-12-22 | 1988-07-06 | 东北工学院 | The measurement method of ground response curve and probe thereof |
| CN2242453Y (en) * | 1995-05-30 | 1996-12-11 | 山东矿业学院 | Strain type stress sensor for rigid drilling hole |
| CN1851426A (en) * | 2006-06-02 | 2006-10-25 | 安里千 | Stress monitoring instrument |
| CN101526351A (en) * | 2008-03-04 | 2009-09-09 | 安里千 | Rod type strata displacement monitor and system |
| CN101532810A (en) * | 2009-04-02 | 2009-09-16 | 中国矿业大学 | Rock stratum deep hole displacement monitor and quick mounting method |
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| 深部岩体三维地应力测量技术;钟作武等;《矿山压力与顶板管理》;20051231(第3期);第80-82,85页 * |
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