CN201653597U - Pressure monitoring unit for mine mined out spaces - Google Patents

Pressure monitoring unit for mine mined out spaces Download PDF

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Publication number
CN201653597U
CN201653597U CN2010200230138U CN201020023013U CN201653597U CN 201653597 U CN201653597 U CN 201653597U CN 2010200230138 U CN2010200230138 U CN 2010200230138U CN 201020023013 U CN201020023013 U CN 201020023013U CN 201653597 U CN201653597 U CN 201653597U
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CN
China
Prior art keywords
pressure
substation
data acquisition
goaf
pressure monitoring
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
Application number
CN2010200230138U
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Chinese (zh)
Inventor
许家林
轩大洋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Mining and Technology CUMT
Original Assignee
China University of Mining and Technology CUMT
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Filing date
Publication date
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Priority to CN2010200230138U priority Critical patent/CN201653597U/en
Application granted granted Critical
Publication of CN201653597U publication Critical patent/CN201653597U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides a pressure monitoring unit for mine mined out spaces, which is suitable for monitoring pressure born by collapsing recrement of a mined out space behind a coal mine stope and ca be used for monitoring pressure of a non-coal main mined out space. The pressure monitoring unit comprises a hydraulic pillow arranged at a measuring point of the mined out space; pressure sensors are arranged at the inlet and the outlet of the hydraulic pillow; signal transmission cables for transmitting signals remotely are connected to the pressure sensors; the other end of each signal transmission cable is connected with a mining intrinsic safety-type data acquisition and displaying substation; and the mining intrinsic safety-type data acquisition and displaying substation is connected with a mining flame-proof type DC stabilized voltage power supply. Electrical signal data of the sensors can be received by the cables, the data can be restored to the rock formation pressure value at the measuring point after being processed, and then the rock formation pressure value can be displayed promptly. The data acquisition and displaying substation is provided with a plurality of passages, so as to monitor pressure at a plurality of measuring points at the same time. Therefore, the utility model solves the problem that a traditional crustal stress measuring unit can not measure the pressure at the mined out space, and has the advantages of simple structure and convenient construction.

Description

The mine worked-out section pressure monitoring device
Technical field
The utility model relates to a kind of mine worked-out section pressure monitoring device, is particularly useful for measuring the pressure that stope working surface of coal mines rear erecting dense individual props spoil is born, and also can be used for the mensuration that non-coal mine erecting dense individual props spoil bears pressure.
Background technology
Rock pressure [in mine is subjected to vast scientific research and technician's extensive concern as one of basic subject of mining industry always.The correct ore deposit pressure of grasping manifests rule, has vital role for coal mining design, roadway arrangement, coal rock dynamic disaster prediction.For this reason, people have carried out a large amount of theories and measurement research work.
Support pressure in the goaf, workplace rear is pressed an important content of studying as the ore deposit, and its regularity of distribution is significant for stope mine pressing and strata control.Carry out grouting filling when exploitation, the changing condition of goaf pressure can show the size of slurry diffusion radius behind the grouting filling and the slurry control degree to overlying strata and the face of land, and sinking effect assessment for subtracting behind grouting filling technology and the grouting filling provides quantitative basis.For stope mine pressing control, the monitoring result of goaf pressure can be used for the disrumpent feelings situation of analytical work face overlying strata, whether have outstanding top as the goaf, whether the overlying strata key stratum takes place compound disrumpent feelings etc., for determining that the reasonable supporting resistance of force piece provides foundation.
At present, in the mining subject extensive concern and research be before the seam mining initial stress measure and the exploitation disturbance after the measurement of secondary stress in entity coal (rock) body, then study less for the pressure in the goaf, workplace rear, and rest on Theoretical Calculation and physical simulation aspect mostly, lack concrete actual measurement device.
For the measurement of terrestrial stress, mainly contain direct measurement and measurement indirectly, as flat jack method, stress relief method etc.These measuring methods all be based upon can near or directly enter on the basis in place to be measured, and goaf, workplace rear is piled with by the inbreak spoil, it is a unapproachable zone, and filling medium is the different spoil of lumpiness, so existing earth stress measuring method all is not suitable for carrying out the goaf pressure monitoring with device.What is more important, traditional initial stress measuring method and device are the disposable observation to measuring point, are not suitable for the pressure survey of time dependent goaf.
Summary of the invention
The purpose of this utility model is the weak point that overcomes in the prior art, provides a kind of simple in structure, can be to the mine worked-out section pressure monitoring device that pressure is gathered and shown in real time that carries out of remote measuring point.
To achieve these goals, goaf of the present utility model pressure monitoring device, comprise the flat jack that is located at measuring point place, goaf, the flat jack import and export is provided with pressure transducer, the signal that is connected with remote transmission signal on the pressure transducer transmits cable, the other end that signal transmits cable is connected to mine intrinsic safety type data acquisition demonstration substation, and the data acquisition of mine intrinsic safety type shows that substation is connected with the flame-proof mine D.C. regulated power supply.
The bottom surface, top of described flat jack is provided with through the fixing protection steel plate of coupling bolt; Described signal transmits the groove that the cable outside is located at steel pipe or is positioned at seat earth; Described mine intrinsic safety type data acquisition shows that substation is provided with a plurality of substation Data Input Interfaces that can carry out pressure monitoring simultaneously to a plurality of measuring points.
Beneficial effect: the utility model is by being embedded in a plurality of flat jacks at measuring point place, goaf, the underground pressure at tested point place is changed into the pressure of flat jack inner fluid, through sensor the pressure of fluid is converted into electric signal, the pressure signal in goaf is reached mine intrinsic safety type data acquisition demonstration substation, just can be by the electrical signal data of cable receiving sensor transmission, processing through inside chip is converted into force value with electrical signal data, and shows in real time by panel.Can be according to the difference of tested point position, by adopting the mine cable of respective length, realization is adjusted the distance and is stopped adopting the real-time monitoring and the demonstration of measuring point pressure in line 2 kilometer range, and monitoring time can cover the entire working surface stoping period.Because the data acquisition substation has a plurality of passages, thereby can carry out pressure monitoring to a plurality of measuring points simultaneously, has solved the problem that traditional geostress survey device can not be measured goaf pressure, it is simple in structure, and easy construction has practicality widely.
Description of drawings
Fig. 1 is the structural representation of the utility model goaf pressure monitoring device.
Fig. 2 is the A-A profile of Fig. 1.
Among the figure, 1-flame-proof mine D.C. regulated power supply; The 2-power output terminal; 3-substation Data Input Interface; The data acquisition of 4-mine intrinsic safety type shows substation; The 5-display panel; 6-substation power input interface; The 7-signal transmits cable; The 8-coupling bolt; The 9-pressure transducer; 10-flat jack turnover fluid mouth; 11-flat jack vent port; 12-protects steel plate; The 13-flat jack.
Embodiment
Below in conjunction with accompanying drawing an embodiment of the present utility model is further described:
Goaf of the present utility model pressure monitoring device, mainly by flat jack 13, the data acquisition of mine intrinsic safety type shows that substation 4 and flame-proof mine D.C. regulated power supply 1 constitute, flat jack 13 is laid in measuring point place, goaf, flat jack turnover fluid mouth 10 places of flat jack 13 are provided with pressure transducer 9, signal transmission cable 7 by the energy remote transmission signal on the pressure transducer 9 is connected on the mine intrinsic safety type data acquisition demonstration substation 4, the data acquisition of mine intrinsic safety type shows that substation 4 is provided with a plurality of substation Data Input Interfaces 3 that can carry out pressure monitoring simultaneously to a plurality of measuring points, bury a plurality of flat jacks 13 underground according to the required quantity that measuring point is set in scene, transmit cable 7 by many signals and show that with the data acquisition of mine intrinsic safety type a plurality of substation Data Input Interfaces 3 of substation 4 are connected respectively, the data of gathering are logical respectively to show that with the data acquisition of mine intrinsic safety type the display panel 5 on the substation 4 shows, can carry out the different channel selecting of substation 4 by the substation telepilot, during reading, passage is transferred to the channel number corresponding with measuring point, the force value that just can show each self-corresponding channel number of a plurality of measuring points in goaf and measuring point, thus realize to force value in real time, dynamic monitoring.The data acquisition of mine intrinsic safety type shows that substation 4 is connected on the power output terminal of flame-proof mine D.C. regulated power supply 1 by substation power input interface 6.In order to prevent to be connected the damage of the pressure transducer 9 on the flat jack 13, be respectively equipped with protection steel plate 12 in the top and bottom of flat jack 13, two block protection steel plates 12 are fixed together through coupling bolt 8 up and down.Be to guarantee that signal transmits the rock damage that cable 7 is not collapsed and, at its outer setting steel pipe or be placed in the groove of seat earth.

Claims (4)

1. goaf pressure monitoring device, it is characterized in that: it comprises the flat jack (13) that is located at measuring point place, goaf, flat jack (13) import and export is provided with pressure transducer (9), the signal that is connected with remote transmission signal on the pressure transducer (9) transmits cable (7), the other end that signal transmits cable (7) is connected to mine intrinsic safety type data acquisition demonstration substation (4), and the data acquisition of mine intrinsic safety type shows that substation (4) is connected with flame-proof mine D.C. regulated power supply (1).
2. goaf as claimed in claim 1 pressure monitoring device is characterized in that: the bottom surface, top of described flat jack (13) is provided with through the fixing protection steel plate (12) of coupling bolt (8).
3. goaf as claimed in claim 1 pressure monitoring device is characterized in that: described signal transmits the groove that cable (7) outside is located at steel pipe or is positioned at seat earth.
4. goaf as claimed in claim 1 pressure monitoring device is characterized in that: described mine intrinsic safety type data acquisition shows that substation (4) is provided with a plurality of substation Data Input Interfaces (3) that can carry out pressure monitoring simultaneously to a plurality of measuring points.
CN2010200230138U 2010-01-16 2010-01-16 Pressure monitoring unit for mine mined out spaces Expired - Fee Related CN201653597U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010200230138U CN201653597U (en) 2010-01-16 2010-01-16 Pressure monitoring unit for mine mined out spaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010200230138U CN201653597U (en) 2010-01-16 2010-01-16 Pressure monitoring unit for mine mined out spaces

Publications (1)

Publication Number Publication Date
CN201653597U true CN201653597U (en) 2010-11-24

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CN2010200230138U Expired - Fee Related CN201653597U (en) 2010-01-16 2010-01-16 Pressure monitoring unit for mine mined out spaces

Country Status (1)

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CN (1) CN201653597U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102928144A (en) * 2012-10-14 2013-02-13 中国矿业大学 System for monitoring gob stress in real time and overlying strata breakage judgment method
CN103673982A (en) * 2013-12-25 2014-03-26 山东科技大学 On-line monitoring device and method of mining overburden stratum movement of shallow coal seam
CN104748897A (en) * 2015-03-15 2015-07-01 中国矿业大学 In-situ mining-induced stress monitoring method and device for underground workface of coal mine
CN106285533A (en) * 2016-07-22 2017-01-04 上海波汇科技股份有限公司 A kind of fiber grating borehole stressmeter installation method in deep coal seam
CN109975180A (en) * 2019-04-18 2019-07-05 龙岩学院 Goaf resistance coefficient test device and method under impact load

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102928144A (en) * 2012-10-14 2013-02-13 中国矿业大学 System for monitoring gob stress in real time and overlying strata breakage judgment method
CN102928144B (en) * 2012-10-14 2015-01-07 中国矿业大学 System for monitoring gob stress in real time and overlying strata breakage judgment method
CN103673982A (en) * 2013-12-25 2014-03-26 山东科技大学 On-line monitoring device and method of mining overburden stratum movement of shallow coal seam
CN103673982B (en) * 2013-12-25 2018-08-17 山东科技大学 A kind of shallow coal scam overlying strata movement on-Line Monitor Device and method
CN104748897A (en) * 2015-03-15 2015-07-01 中国矿业大学 In-situ mining-induced stress monitoring method and device for underground workface of coal mine
CN106285533A (en) * 2016-07-22 2017-01-04 上海波汇科技股份有限公司 A kind of fiber grating borehole stressmeter installation method in deep coal seam
CN106285533B (en) * 2016-07-22 2018-09-21 上海波汇科技股份有限公司 A kind of installation method of fiber grating borehole stressmeter in deep coal seam
CN109975180A (en) * 2019-04-18 2019-07-05 龙岩学院 Goaf resistance coefficient test device and method under impact load

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20101124

Termination date: 20110116