CN102997886A - Monitoring method for remotely measuring and controlling damage depths of floor strata - Google Patents

Monitoring method for remotely measuring and controlling damage depths of floor strata Download PDF

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Publication number
CN102997886A
CN102997886A CN2012104581870A CN201210458187A CN102997886A CN 102997886 A CN102997886 A CN 102997886A CN 2012104581870 A CN2012104581870 A CN 2012104581870A CN 201210458187 A CN201210458187 A CN 201210458187A CN 102997886 A CN102997886 A CN 102997886A
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China
Prior art keywords
monitoring
monitoring method
floor strata
floor
instrument
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CN2012104581870A
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Chinese (zh)
Inventor
刘树新
刘长武
宋素芬
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Inner Mongolia University of Science and Technology
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Inner Mongolia University of Science and Technology
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Priority to CN2012104581870A priority Critical patent/CN102997886A/en
Publication of CN102997886A publication Critical patent/CN102997886A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a monitoring method for remotely measuring and controlling damage depths of floor strata. The monitoring method is characterized in that vibrating wire type rock fracture meters and temperature sensors are arranged in drilled holes of a seam floor stratum, and a monitoring system comprises a signal acquisition unit, signal transmission cables and a reading device; and the signal acquisition unit acquires displacement and temperature data of fractures at measuring points of the floor stratum, the displacement and temperature data are transmitted to the reading device via the signal transmission cables, analog quantities are converted into digital quantities on the reading device, and the digital quantities are recorded and displayed. The monitoring method has the advantages that damage conditions of the measuring points of the floor stratum of a stope can be monitored before a roof propelled along with a working face in a mining procedure falls, damage conditions of the measuring points of the floor stratum can also be monitored after the working face is pushed across a monitoring point and the roof falls, and accordingly the integral mining procedure is continuously monitored; and the maximum damage depth and an activity low of the floor stratum of the working face can be obtained by analyzing the monitoring data, and a foundation is laid for predicting water inrush of a seam floor.

Description

Remote measurement and control floor strata collapse dept monitoring method
Technical field
The present invention relates to a kind of remote measurement and control floor strata collapse dept monitoring method, belong to pit mining and disaster monitoring method field.
Technical background
In the process of coal mining, if having underground river, solution cavity or high artesian under the floor strata, there is the base plate piestic water to charge into the mining work space, the risk that causes the mine water disaster accident to occur, and the floor strata gushing water is with to adopt middle coal seam floor failure situation directly related.
At present, what the field monitoring method of relevant floor strata collapse dept was commonly used both at home and abroad mainly contains two kinds, is respectively two kinds of flood-pot-test method and sound wave probe methods.
The flood-pot-test method has direct relation according to floor rock cranny development situation and water injection rate, water injection rate is large, then reflect rock mass fracture growth, connective good, therefore can how much predict floor rock cranny development and collapse dept by what seat earth be adopted volume of water input in the pouring water into borehole section of front and back.
The sonic test technology is based on sound wave when propagating in different medium, the parameter such as velocity of wave, amplitude is corresponding different principle also, artificially to floor strata emission sound wave, and by the propagation condition of observation sound wave in the rock stratum and the variation characteristic of velocity of wave, amplitude, and then infer the destruction situation that floor strata.
There are different defectives separately in existing method.Flood-pot-test is simple, directly perceived, uses extensivelyr, but the rock mass water wettability is different, and is subject to the rock mass mesoporosity and affects, and measuring error is larger.The acoustic sounding method can not be distinguished the preexisting crack in the floor strata and adopt the new crack that forms, and measuring error is larger.Above-mentioned both methods all can only be monitored in the mining active process and do not striden the before destruction situation of Floor Strata measuring point with advance of the face top board in addition, after workplace pushes through the monitoring point, striding backward personnel because of top board can't can't measure near measuring point, can not reflect the rule of development of workplace floor station formation damage in whole progradation.
Summary of the invention
The object of the present invention is to provide a kind of remote monitoring method of floor strata collapse dept.The method can real-time continuous be monitored whole mining active process diverse location floor strata destruction situation and collapse dept, in time intervenes and produces, prevention Water Inrush accident.
Technical solution:
The present invention be do not stride with advance of the face top board in the mining active process before and workplace push through the monitoring point top board and stride the afterwards destruction situation continuous monitoring of Floor Strata measuring point, whole mining active process is monitored rock fracture displacement and the temperature at measuring point place by monitoring system.
Described monitoring system comprises: seat earth rockhole, type vibration wire rock fracture instrument, temperature sensor; signal gathering unit, signal-transmitting cable line, readout instrument; in the tunnel, establish at least four monitoring stations; the monitoring station base plate is provided with boring; be provided with rock fracture instrument and temperature sensor in the boring; rock fracture instrument, temperature sensor stop adopting the outer readout instrument of line with workplace respectively by transfer cable wire and are connected, and transfer cable wire places in the protection steel pipe, well cementing.
Described rock fracture instrument and temperature sensor adhere to and are installed together.
Described monitoring system is presented at floor strata crack deformation signal, temperature signal on the readout instrument by transmission, conversion.
Remote measurement and control floor strata collapse dept monitoring method of the present invention is characterized in that rock fracture displacement monitoring and the temperature monitoring at measuring point place in the whole mining active process.
Remote measurement and control floor strata collapse dept monitoring method advantage is:
1. synthesis measuring crack deformation signal and temperature signal, signals collecting is fast, reading error is little.
2. realized continuous monitoring in the whole mining active process, after apparatus installation was complete, the monitoring personnel did not need to enter workplace again, and security is good.
3. apparatus installation is convenient, and monitoring system is reliable, and is low to the requirement of coal mining field condition, is convenient to promote the use of.
Remote measurement and control floor strata collapse dept monitoring method combines the technology of the subjects such as mining technique, sensor technology, the information processing technology, overcoming on the existing monitoring method defective basis, directly measure the mechanics of whole working face mining Coal During layer base plate, Monitoring Data reflects Rule of roof movement of coal to the impact of floor strata collapse dept, lays the first stone for predicting coal seam bottom water bursting and safety in production.
Description of drawings
Fig. 1 is installation site figure of the present invention;
Fig. 2 is system architecture synoptic diagram of the present invention.
Embodiment
Embodiment
The present invention be do not stride with advance of the face top board in the mining active process before and workplace push through the monitoring point top board and stride the afterwards destruction situation continuous monitoring of Floor Strata measuring point, whole mining active process is monitored rock fracture displacement and the temperature at measuring point place by monitoring system.
Monitoring system is by the type vibration wire rock fracture instrument, the temperature sensor that are embedded in the seat earth rockhole, and signal gathering unit, signal-transmitting cable line and readout instrument consist of.
The present invention respectively at workplace First Weighting Interval of Main place, for the first time periodic weighting step pitch place, workplace last periodic weighting step pitch place and workplace stop adopting the line place and establish at least four monitoring stations workplace.The monitoring station is arranged on headentry (or material lane) the 7 one side sidewalls; sidewall is established a brill nest; bore nest base plate 6 and be provided with boring 1; 20 meters of 1 degree of depth of holing; from 1 porch of holing every 3 meters and bore 6 times different rock-layers interfaces of nest base plate and be provided with respectively a type vibration wire baried type rock fracture instrument and a temperature sensor 2; temperature sensor adheres to rock fracture instrument one side; the rock fracture instrument is put into boring 1 after by cord series connection colligation gently; type vibration wire rock fracture instrument; temperature sensor 2 stops adopting the outer readout instrument 8 of line with workplace respectively by transfer cable wire 4 and is connected; transfer cable wire 4 places in the protection steel pipe 5; whole well cementing, post-grouting liquid 3 solidified rear reading fully in 48 hours.
Observation process:
1. gather the crack deformation signal: in the underground coal mining process, unsettled → roof caving process that compression → expansion → compression deformation process is accompanied by the advance of the face → top board in the seat earth rock stratum and occurring, be embedded in string wire and crack deform in same pace in the rock fracture instrument of floor strata different depth, gather string wire deformation simulative signal.
2. collecting temperature signal: deep circulation underground water enters the floor strata water-resisting layer when inner by the crack passage, and changing appearred in rock temperature near crevice water can cause penetrating passage, gathered rock temperature change modeling signal.
3. signal transmission: the crack deformation signal that collects and temperature variation signal stop adopting the outer readout instrument of line by placing the multi-core cable wire of protecting in the steel pipe to be transferred to workplace.
4. signal conversion, record and show: gather simulating signal and be converted to digital signal at readout instrument, and recorded and show.
5. analyze Monitoring Data: draw crack deformation curve and temperature variation curve in the whole mining active process, grasp the destruction situation of floor strata, obtain the floor strata maximal destruction degree of depth and rule of development thereof.
6. predict Water Inrush: the complete water proof depth of stratum of seat earth is directly related with the floor strata maximal destruction degree of depth that monitoring obtains, the floor strata collapse dept is larger, then the complete water proof depth of stratum of base plate is just less, when the complete water proof depth of stratum of base plate dropped to the security admission critical value, indication destroyed the induced water inrush accident because of floor strata.

Claims (4)

1. remote measurement and control floor strata collapse dept monitoring method, it is characterized in that, for before not striding with advance of the face top board in the mining active process and workplace push through the monitoring point top board and stride the afterwards destruction situation continuous monitoring of Floor Strata measuring point, whole mining active process is monitored rock fracture displacement and the temperature at measuring point place by monitoring system.
2. remote measurement and control floor strata collapse dept monitoring method according to claim 1; it is characterized in that; monitoring system comprises: seat earth rockhole; type vibration wire rock fracture instrument; temperature sensor; signal gathering unit; the signal-transmitting cable line; readout instrument; in the tunnel, establish at least four monitoring stations; the monitoring station base plate is provided with boring; be provided with rock fracture instrument and temperature sensor in the boring; the rock fracture instrument; temperature sensor stops adopting the outer readout instrument of line with workplace respectively by transfer cable wire and is connected; transfer cable wire places in the protection steel pipe, well cementing.
3. remote measurement and control floor strata collapse dept monitoring method according to claim 2 is characterized in that, rock fracture instrument and temperature sensor adhere to and be installed together.
4. remote measurement and control floor strata collapse dept monitoring method according to claim 2 is characterized in that, monitoring is presented at floor strata crack deformation signal, temperature signal on the readout instrument by transmission, conversion.
CN2012104581870A 2012-11-15 2012-11-15 Monitoring method for remotely measuring and controlling damage depths of floor strata Pending CN102997886A (en)

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Cited By (8)

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Publication number Priority date Publication date Assignee Title
CN103591922A (en) * 2013-11-28 2014-02-19 中国矿业大学 Method for detecting upper coal seam floor damage depth radon gas in close-distance coal seam mining
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
CN104181611A (en) * 2014-08-28 2014-12-03 山东科技大学 Mine working face top board and bottom board mining breaking fracture development dynamic monitoring method
CZ305396B6 (en) * 2013-11-26 2015-09-02 Vysoká Škola Báňská - Technická Universita Apparatus for measuring temperature fields in rock massif
CN105003255A (en) * 2015-06-25 2015-10-28 山东科技大学 Floor mining damage zone multi-section blocking synchronous leakage detection method
CN105547359A (en) * 2015-12-15 2016-05-04 中国科学院力学研究所 Soil layer response monitoring system
CN105652311A (en) * 2016-01-18 2016-06-08 陕西煤业化工技术研究院有限责任公司 Micro-seismic monitoring method for monitoring water inrush of base plate
CN109828314A (en) * 2019-02-01 2019-05-31 内蒙古科技大学 A kind of mining induced roadway country rock plastic failure range precision detection method

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ305396B6 (en) * 2013-11-26 2015-09-02 Vysoká Škola Báňská - Technická Universita Apparatus for measuring temperature fields in rock massif
CN103591922B (en) * 2013-11-28 2015-12-09 中国矿业大学 Short range seam mining upper Seam Floor Failure degree of depth radon gas detection method
CN103591922A (en) * 2013-11-28 2014-02-19 中国矿业大学 Method for detecting upper coal seam floor damage depth radon gas in close-distance coal seam mining
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
CN104181611B (en) * 2014-08-28 2016-02-24 山东科技大学 A kind of mine working face roof and floor Mining failure cranny development dynamic monitoring method
CN104181611A (en) * 2014-08-28 2014-12-03 山东科技大学 Mine working face top board and bottom board mining breaking fracture development dynamic monitoring method
CN105003255A (en) * 2015-06-25 2015-10-28 山东科技大学 Floor mining damage zone multi-section blocking synchronous leakage detection method
CN105003255B (en) * 2015-06-25 2017-09-01 山东科技大学 Bottom plate Mining failure band multistage blocks synchronous leak detection method
CN105547359A (en) * 2015-12-15 2016-05-04 中国科学院力学研究所 Soil layer response monitoring system
CN105547359B (en) * 2015-12-15 2018-03-27 中国科学院力学研究所 A kind of soil layer responds monitoring system
CN105652311A (en) * 2016-01-18 2016-06-08 陕西煤业化工技术研究院有限责任公司 Micro-seismic monitoring method for monitoring water inrush of base plate
CN109828314A (en) * 2019-02-01 2019-05-31 内蒙古科技大学 A kind of mining induced roadway country rock plastic failure range precision detection method
CN109828314B (en) * 2019-02-01 2020-06-23 内蒙古科技大学 Precision detection method for plastic damage range of mining roadway surrounding rock

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Application publication date: 20130327