CN106703888A - In-situ monitoring method of large space motion of coal mine mining stratum - Google Patents
In-situ monitoring method of large space motion of coal mine mining stratum Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 116
- 230000033001 locomotion Effects 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000005065 mining Methods 0.000 title claims abstract description 34
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 20
- 239000003245 coal Substances 0.000 title claims abstract description 19
- 239000011435 rock Substances 0.000 claims abstract description 107
- 238000004458 analytical method Methods 0.000 claims abstract description 8
- 238000005553 drilling Methods 0.000 claims description 25
- 238000012806 monitoring device Methods 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000011161 development Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 238000013508 migration Methods 0.000 claims description 4
- 230000005012 migration Effects 0.000 claims description 4
- 238000005728 strengthening Methods 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 2
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- 238000005259 measurement Methods 0.000 abstract description 3
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- 230000010354 integration Effects 0.000 abstract description 2
- 238000012795 verification Methods 0.000 abstract 1
- 238000005086 pumping Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004047 hole gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 230000010534 mechanism of action Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/002—Survey of boreholes or wells by visual inspection
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
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Abstract
The invention relates to a monitoring technic of stratum motions before and after the coal bed mining, particularly relates to a 1:1 in-situ monitoring method of the large space range overlying rocks before and after the coal bed mining, and is specifically an in-situ monitoring method of the large space motions of the coal mine mining stratum. The problem that monitoring means for rock strata movements do not yet exist at present for large space ranges either within the nation or outside the nation is solved. The in-situ monitoring method comprehensively adopts a means based on the 'one form three places' method of the subsidence-overburden rock migration-underground mine pressure, and the in-situ monitoring method further adopts the geophysical prospecting methods of well upper and lower linkage observation, the drill hole television observation, the hole gap CT observation and the micro-seismic monitoring and the like, and the in-situ monitoring method also adopts the integration monitoring methods of the working face surrounding rock stress-strain monitoring and the like. The in-situ monitoring method creatively integrates various observation means, and through the reasonable arrangements, designs, observations and analyses of various monitoring means in large space ranges, mutual complements, comparisons and verifications between the various observation means are achieved, meanwhile each separate monitoring technic is innovated and promoted, and the in-situ precise measurement of the large space motions of the coal mine mining stratum is achieved.
Description
Technical field
The present invention relates to the rock movement monitoring technology before and after seam mining, the big sky of overlying strata more particularly to before and after seam mining
Between scope 1:1 in-situ monitoring method, specially coal mining rock movement large space in-situ monitoring method.
Background technology
The motion feature and rule of rock stratum are always the key problem of coal mining, rock movement and stope after coal mining
The disaster such as ore deposit pressure, Gas Outburst, permeable, goaf ignition is all closely bound up.However, because rock movement and its residing geology ring
The factors such as border, rock stratum attribute, mining conditions are all closely related, create the complexity and diversity of rock movement so that for
Inherently the research of the rock movement in " camera bellows " state is increasingly complex.In recent years, domestic and foreign scholars are for rock movement
Substantial amounts of work has all been done in research, but major part is all the side using analog simulations such as laboratory physical analogy, numerical simulations
Method is studied, and its result of study tends not to truly reflect the motion state of rock stratum, it is impossible to preferably instruct the production reality at scene
Trample；Some scholars also use the scenes such as micro seismic monitoring, borehole television, working resistance of support monitoring, laneway stress strain monitoring
Actual measurement means have carried out quantitative description to rock movement.Though micro seismic monitoring can obtain rock movement and disrumpent feelings spatial dimension and
Yardstick, but its precision is relatively low, and error is big；Though borehole television energy fine description rock stratum fracture characteristicss, limitation is big, Observable model
It is with limit；Though working resistance of support and the monitoring energy accurate description surrouding rock stress state of laneway stress strain, all pass through
Passive processing data carrys out inverting and obtains the disrumpent feelings form that rock stratum may occur.Above-mentioned single monitoring means mostly just in
The certain point or macrospace scope of working face mining roadway or rock movement are observed, with certain limitation, and
Mostly also it is limited within the scope of base object model for the research of stope rock stratum both at home and abroad at present, and China is thick and super high seam is stored up
Amount is abundant, and by taking China's Datong Mine Area 20m super high seam exploitations as an example, its mining Practice shows, the high position outside base object model scope
The disrumpent feelings ore deposit pressure for working face of rock stratum manifests influence also more acutely, therefore necessary to rock stratum in the range of large space
Fracture characteristicss are precisely described, and this can not only obtain the disrumpent feelings migration rule of overlying strata, are more opened for disclosing thick and super high seam
The strong ore deposit pressure Displaying Mechanism adopted is significant.
So, precisely detection rock stratum continuity motion feature in the time, spatially, invents a kind of coal mining rock stratum fortune
Dynamic large space original position continuous monitoring method, realizes that the continuous monitoring to rock movement on time, space scale is imperative.But
It is that there is no monitoring means for the motion of rock stratum in the range of large space both at home and abroad at present.
The content of the invention
The present invention solves the problems, such as to there is no monitoring means for the motion of rock stratum in the range of large space both at home and abroad at present, there is provided
A kind of coal mining rock movement large space in-situ monitoring method, not only can fine description rock stratum motion feature, while be work
The generation and control for making face ore deposit pressure provide foundation, advantageously ensure that the safe working in colliery.
The present invention adopts the following technical scheme that realization：Coal mining rock movement large space in-situ monitoring method, be
Realized by following steps：
A. before working face mining, along advance of the face direction from earth's surface drilling Television Observations at a certain distance vertically downward
Hole, is observed by borehole television to sand coated iron mold and lithology, and is taken part borehole television peephole core and carried out rock stratum
Mechanics Performance Testing, working face overlying position of key stratum is judged according to test result, is equally also taken out using working face earth's surface gas
Putting drilling, leting speeper hole and other engineering the drilling carries out borehole television observation；
B. before working face mining, one group " three one are made a call at a certain distance vertically downward from earth's surface along advance of the face direction
Body " rock movement monitoring hole, every group has three " Trinity " rock movement monitoring holes spaced apart, is moved in " Trinity " rock and supervised
Gaging hole carries out the installation of rock movement monitoring instrument, and rock movement monitoring instrument is arranged at the position of working face overlying Chief rock stratum, and
Moved towards along working face at its installation site correspondence earth's surface and tendency arrangement ground settlement observation station is observed for the first time；
C. it is any to choose many in borehole television peephole, earth's surface firedamp taking-out discharging drilling, leting speeper hole before working face mining
Individual drilling carries out the installation of CT detection instruments between hole, and used as launch hole, other any number of drillings are to receive for one of drilling
Hole, and detected for the first time, grasp rock crack development characteristics before working face mining；
D. with working face mining, the embedded goaf pressure of each " Trinity " the rock movement monitoring hole location of correspondence in goaf
Power monitoring device, goaf pressure monitoring device is provided with wireless launcher, and pressure data passes through to be wirelessly transferred, while using branch
Frame working resistance monitoring device carries out real-time monitoring to ten frame working resistance of support of interval；
E. with working face mining, arrange monitor for stress, strain monitoring device to working face at a certain distance in tunnel
Face surrounding rock carries out real-time monitoring, while preliminary scan is carried out to tunnel profile using laser scanning device, and in working face lane
Arrange that Microseismic monitoring system carries out real time record to the disrumpent feelings scope of overlying strata and its intensity that releases energy in the range of road；
F. with working face mining, each Monitoring Data is recorded in real time, and sets up early-warning and predicting software systems, when support work
Software systems are alarmed when drag data or goaf pressure data exceed setting maximum, now, check other monitoring numbers
According to if Microseismic monitoring system is monitored must be released energy less than 10 to rock stratum5J, CT detection instruments between borehole television, hole, " three
Body " rock movement monitoring instrument monitors that must to be caving scope to rock stratum unobvious simultaneously, and laser scanning finds that roadway deformation speed is less than
0.1m/d, then sound all clear, and strengthening supporting measure is otherwise then taken in the range of working face and tunnel；
G. with working face mining, each Monitoring Data is recorded in real time, if though early-warning and predicting software systems are alarmed,
Monitoring obtains both appearance any of following phenomenon, then manually start alarm, the strengthening supporting measure in the range of working face and tunnel：
1. Microseismic monitoring system must release energy more than 10 to rock stratum6J, and it is the discovery that key stratum is disrumpent feelings according to borehole television data；②
Laser scanning finds roadway deformation speed more than 0.3m/d-0.5m/d；3. goaf pressure data short time appearance rapidly increases,
And it is the discovery that key stratum is disrumpent feelings according to borehole television data；4. CT detection instruments, " Trinity " rock move prison between borehole television, hole
It is big that survey instrument monitoring must be caving scope to rock stratum；5. force piece working resistance short time appearance rapidly increases；6. working face
Sharply increasing occurs in the gas pumping hole gas short time, and air-flow is extremely unstable；
H. comprehensive analysis is carried out to Monitoring Data using the above method, until working face mining terminates, closes on subsequent work face and open
When adopting, it is monitored using same method, and has exploited the ground settlement data in power cut-off face, rock to upper one simultaneously and moves number
Continuation monitoring is carried out according to CT data between, hole, analysis closes on when subsequent work face is exploited overlying strata migration characteristics in the range of large space.
The present invention is innovatively melted various observation methods and is integrated, and each monitoring means is entered by the range of large space
Row is rational to be arranged, design, observes and analyzes so that realize being complementary to one another, contrast and verifying between each observation method, while right
Respectively being separately monitored technology carries out innovation lifting, so as to realize the precisely actual measurement in situ of coal mining rock movement large space.
The method of the invention has the advantage that：1）Realize that rock movement is sagging from the well of " earth's surface-overlying strata-working face "
Nogata realizes rock movement in vertical direction, working face to continuous monitoring, the arrangement of advance of the face direction drilling and observation
Direction of propulsion（Horizontal direction）Continuous monitoring, prison is strained by CT observations between rock movement monitoring, hole, micro seismic monitoring, laneway stress
The arrangement of survey and goaf stress monitoring realizes the continuous prison of the four-dimensional yardstick based on earth's surface-overlying strata-working face-time
Survey；2）Monitoring method is more, can mutually be made up between each monitoring means and corresponded to, and is conducive to the description that becomes more meticulous of rock movement；3）
Observation borehole engineering amount is big, and working face drill hole density is up to 120 holes/km2More than；4）Working face Other Engineering drills（Gas is taken out
Borehole, leting speeper hole etc.）Gas pumping amount, drilling water level can also react rock stratum fracture characteristicss to a certain degree, especially
The suddenly change of gas pumping amount all correspond to rock stratum and collapse disconnected generation, while such drilling can do rock shift observation hole use, realize
One hole is multiplex.Described monitoring method not only can finely be detected to the motion of rock stratum in the range of coal mining large space, together
When manifest for the ore deposit pressure of working face and control, with directive function, to be with a wide range of applications.
Brief description of the drawings
Fig. 1 is the principle schematic of the method for the invention；
Fig. 2 is the local A sectional views of Fig. 1；
Fig. 3 is the Local C sectional view of Fig. 1；
Fig. 4 is the local B sectional views of Fig. 1.
In figure：1- working faces, 2- borehole television peepholes, 3- borehole televisions, 4- " Trinity " rock movement monitorings hole, 5- rocks
Move CT detection instruments between monitoring instrument, 6- ground settlement observation stations, 7- holes, 8- goafs pressure monitoring device, the work of 9- supports
Monitoring device of resistance, 10- tunnels, 11- monitor for stress, 12- strain monitoring instrument, 13- Microseismic monitoring systems, under 14- closes on
One working face.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings：
It is as shown in Figure 1 coal mining rock movement large space in-situ monitoring method schematic diagram of the present invention, it is comprehensive using based on ground
Between " Trinity " well linkage from top to bottom observation of table depression-overlying strata migration-Underground pressure, borehole television observation, hole CT observations and
The integration monitoring method such as the physical prospecting such as micro seismic monitoring means, working face surrouding rock stress strain monitoring, its step is：
A. before the exploitation of working face 1, along the direction of propulsion of working face 1 from earth's surface vertically downward every 50m drilling Television Observations hole
2, sand coated iron mold and lithology are observed by borehole television 3, and take the core of part borehole television peephole 2 carries out rock stratum
Mechanics Performance Testing, working face overlying position of key stratum is judged according to test result, is equally also taken out using working face earth's surface gas
Putting the drilling of the Other Engineerings such as drilling, leting speeper hole carries out borehole television 3 and observes；
B. before the exploitation of working face 1, made a call to one group " Trinity " every 150m vertically downward from earth's surface along advance of the face direction
Rock movement monitoring hole 4, every group has 3 rock movement monitorings drilling 4, spacing 50m, carries out rock in " Trinity " rock movement monitoring hole 4 and moves prison
The installation of instrument 5 is surveyed, rock movement monitoring instrument 5 is arranged at the position of working face overlying Chief rock stratum, and in its installation site
Moved towards along working face at correspondence earth's surface and tendency arrangement ground settlement observation station 6 is observed for the first time, moved towards, to be inclined to the line of observation complete
Length is 200m, respectively lays 11 ground settlement observation stations 6, and each spacing of earth's surface settlement observation point 6 is 20m；
C. it is any to choose in borehole television peephole 2, earth's surface firedamp taking-out discharging drilling, leting speeper hole before the exploitation of working face 1
Multiple drilling carries out the installation of CT detection instruments 7 between hole, and used as launch hole, other any number of drillings are to connect for one of drilling
Batter, and detected for the first time, grasp working face 1 and exploit preceding rock crack development characteristics；
D. exploited with working face 1, goaf pressure is buried at each position of " Trinity " rock movement monitoring hole 4 of correspondence in goaf
Power monitoring device 8, goaf pressure monitoring device 8 is provided with wireless launcher, and pressure data passes through to be wirelessly transferred, while using
9 pairs of ten frame working resistance of support of interval of working resistance of support monitoring device carry out real-time monitoring；
E. exploited with working face 1, monitor for stress 11, the 12 pairs of work of strain monitoring device are arranged every 150m in tunnel 10
Face face surrounding rock carries out real-time monitoring, specifically includes 5 stress monitoring instruments, 5 displacement monitors, while being filled using laser scanning
Putting carries out preliminary scan to the profile of tunnel 10, and arranges that Microseismic monitoring system 13 is disrumpent feelings to overlying strata in the range of roadway workface 10
Scope and its intensity that releases energy carry out real time record；
F. exploited with working face 1, each Monitoring Data is recorded in real time, and set up early-warning and predicting software systems, recovery process
In monitor that working resistance of support data or goaf pressure data exceed setting maximum, software systems are alarmed, now,
Other Monitoring Datas are checked, if Microseismic monitoring system 13 is monitored must be released energy less than 10 to rock stratum5J, borehole television 3, Kong Jian
CT detection instruments 7, " Trinity " rock movement monitoring instrument 5 monitor that must to be caving scope to rock stratum unobvious simultaneously, and laser scanning
It was found that the rate of deformation of tunnel 10 is less than 0.1m/d, now sound all clear, reinforcement is otherwise then taken in the range of working face and tunnel
Supporting measure；
G. exploited with working face 1, each Monitoring Data is recorded in real time, if though early-warning and predicting software systems are alarmed,
But monitoring obtains both appearance any of following phenomenon, then manually start alarm, and strengthening supporting is arranged in the range of working face and tunnel
Apply：1. Microseismic monitoring system 7 must release energy more than 10 to rock stratum6J, and it is the discovery that key stratum breaks according to borehole television data
It is disconnected；2. laser scanning finds the rate of deformation of tunnel 10 more than 0.3m/d-0.5m/d；3. the appearance of goaf pressure data short time is anxious
Speed increases, and is the discovery that key stratum is disrumpent feelings according to borehole television data；4. CT detection instruments 7 between borehole television 3, hole, " three one
Body " rock movement monitoring instrument 5 monitors that must to be caving scope to rock stratum big；5. force piece working resistance short time appearance rapidly increases
Plus；6. the face gas drainage holes gas short time occur sharply increasing, air-flow is extremely unstable；
H. comprehensive analysis is carried out to Monitoring Data using the above method, until the exploitation of working face 1 terminates, closes on subsequent work face 14
During exploitation, it is monitored using same method, and has exploited ground settlement data, the rock in power cut-off face 1 to upper one simultaneously
Moving CT data between data, hole carries out continuation monitoring, and analysis closes on overlying strata migration in the range of large space when subsequent work face 14 is exploited
Feature, and the ore deposit pressure of working face is mutually tackled according to monitoring result manifest and control effectively.
Meanwhile, being found by live large space in-situ bioremediation, overlying key rock stratum is disrumpent feelings with working face to press, goaf pressure
Power is in one-to-one relationship, and the disrumpent feelings of overlying key rock stratum causes the increase of Face Ground Pressure Behavior degree, when overlying main key stratum
After disrumpent feelings, typically all along with the generation of surface subsidence, ground settlement data uprush it is typically disrumpent feelings with main key stratum also one by one
Correspondence；Borehole television monitoring obtains working face crack and develops scope about 30m in advance, after 20m super high seams are exploited, overlying strata crack
Up to 300m, CT also detects overlying strata cranny development degree after working face mining that obtains and greatly increases development height between hole, but not
It is different with development degree at buried depth, corresponded with borehole television data；Micro seismic monitoring, working face surrouding rock stress strain monitoring are obtained
To the monitoring result in space, time scale also there is good correspondence with above-mentioned monitoring result；Taken out by gas
Discharge hole, the observation in leting speeper hole show that gas pumping amount, the change of drilling water level can also reflect the fracture characteristicss of rock stratum.Meanwhile,
The continuous monitoring of large scale indicates working face and closes on goaf and entity coal different structure pair Multi-working-surface in the horizontal direction
It is also different in the influence of this exploitation working face overlying strata fracture characteristicss.By using above-mentioned large space in-situ bioremediation method, for analysis
Rock shifting has important meaning in space, the fracture characteristicss of time scale, ore deposit pressure mechanism of action in the range of large space after seam mining
Justice.
Claims (3)
1. a kind of coal mining rock movement large space in-situ monitoring method, it is characterised in that：It is to be realized by following steps：
A. in working face（1）Before exploitation, along working face（1）Drilling is electric at a certain distance vertically downward from earth's surface for direction of propulsion
Depending on peephole（2）, by borehole television（3）Sand coated iron mold and lithology are observed, and take part borehole television peephole（2）
Core carries out the Mechanics Performance Testing of rock stratum, and working face overlying position of key stratum is judged according to test result, equally also utilizes work
Making face earth's surface firedamp taking-out discharging drilling, leting speeper hole and other engineering the drilling carries out borehole television（3）Observation；
B. in working face（1）Before exploitation, one group " three is made a call at a certain distance vertically downward from earth's surface along advance of the face direction
Position one " rock movement monitoring hole（4）, every group has three " Trinity " rock movement monitoring holes spaced apart（4）, at " three
Integrally " rock movement monitoring hole（4）Carry out rock movement monitoring instrument（5）Installation, rock movement monitoring instrument（5）Installed in working face overlying master
Want at the position of crucial rock stratum, and ground settlement observation station is arranged along working face trend and tendency at its installation site correspondence earth's surface
（6）Observed for the first time；
C. in working face（1）Before exploitation, in borehole television peephole（2）, earth's surface firedamp taking-out discharging drilling, in leting speeper hole, arbitrarily
Choosing multiple drillings carries out CT detection instruments between hole（7）Installation, one of drilling as launch hole, other any number of brills
Hole is receiver hole, and is detected for the first time, grasps working face（1）Rock crack development characteristics before exploitation；
D. with working face（1）Exploitation, each " Trinity " the rock movement monitoring hole of correspondence in goaf（4）Buried at position and adopted
Dead zone pressure monitoring device（8）, goaf pressure monitoring device（8）Wireless launcher is installed, pressure data is by wireless biography
It is defeated, while using working resistance of support monitoring device（9）Real-time monitoring is carried out to ten frame working resistance of support of interval；
E. with working face（1）Exploitation, in tunnel（10）In arrange monitor for stress at a certain distance（11）, strain monitoring dress
Put（12）Real-time monitoring is carried out to working face face surrounding rock, while using laser scanning device to tunnel（10）Profile is carried out for the first time
Scanning, and in roadway workface（10）In the range of arrange Microseismic monitoring system（13）To the disrumpent feelings scope of overlying strata and its release energy strong
Degree carries out real time record；
F. with working face（1）Exploitation, records to each Monitoring Data in real time, and sets up early-warning and predicting software systems, works as support
Software systems are alarmed when working resistance data or goaf pressure data exceed setting maximum, now, check that other are supervised
Data are surveyed, if Microseismic monitoring system（13）Monitoring must release energy less than 10 to rock stratum5J, borehole television（3）, CT detections between hole
Instrument（7）, " Trinity " rock movement monitoring instrument（5）Monitor that must to be caving scope to rock stratum unobvious simultaneously, and laser scanning is sent out
Existing tunnel（10）Rate of deformation is less than 0.1m/d, then sound all clear, and reinforcement branch is otherwise then taken in the range of working face and tunnel
Shield measure；
G. with working face（1）Exploitation, records, to each Monitoring Data if though early-warning and predicting software systems are reported in real time
It is alert, but monitoring obtains both appearance any of following phenomenon, then manually start alarm, the strengthening supporting in the range of working face and tunnel
Measure：1. Microseismic monitoring system（7）Must be released energy more than 10 to rock stratum6J, and it is the discovery that key stratum according to borehole television data
It is disrumpent feelings；2. laser scanning finds tunnel（10）Rate of deformation is more than 0.3m/d-0.5m/d；3. the goaf pressure data short time go out
Now rapidly increase, and be the discovery that key stratum is disrumpent feelings according to borehole television data；4. borehole television（3）, CT detection instruments between hole
（7）, " Trinity " rock movement monitoring instrument（5）Monitor that must to be caving scope to rock stratum big；5. force piece working resistance is in short-term
Between occur rapidly increasing；6. the face gas drainage holes gas short time occur sharply increasing, air-flow is extremely unstable；
H. comprehensive analysis is carried out to Monitoring Data using the above method, until working face（1）Exploitation terminates, and closes on subsequent work face
（14）During exploitation, it is monitored using same method, and to upper one has exploited power cut-off face simultaneously（1）Ground settlement number
Moving CT data between data, hole according to, rock carries out continuation monitoring, and analysis closes on subsequent work face（14）Covered in the range of large space during exploitation
Rock migration characteristics.
2. coal mining rock movement large space in-situ monitoring method according to claim 1, it is characterised in that：Step a
Middle borehole television peephole（2）Spacing be 50m；Every group of " Trinity " rock movement monitoring hole in step b（4）The distance between be
150m, " Trinity " the rock movement monitoring hole in every group（4）Spacing be 50m, move towards, be inclined to and each lay 11 ground settlements and see
Measuring point（6）, each earth's surface settlement observation point（6）Spacing is 20m；Monitor for stress in step e（11）, strain monitoring device（12）
At intervals of 150m.
3. coal mining rock movement large space in-situ monitoring method according to claim 2, it is characterised in that：Step e
In arrange five monitor for stress altogether（11）, five strain monitoring devices（12）.
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