CN108318931A - In high precision, essential safety roof height of water flowing fractured zone method of real-time - Google Patents
In high precision, essential safety roof height of water flowing fractured zone method of real-time Download PDFInfo
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- CN108318931A CN108318931A CN201711335414.XA CN201711335414A CN108318931A CN 108318931 A CN108318931 A CN 108318931A CN 201711335414 A CN201711335414 A CN 201711335414A CN 108318931 A CN108318931 A CN 108318931A
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- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
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Abstract
A kind of high-precision, essential safety roof height of water flowing fractured zone method of real-time, including cloth hole, hole inner fiber grating water pressure monitoring system and aperture fiber grating data collecting system three parts.Monitoring drilling that two or more apertures were suitably supplied water face upward meets stope direction of propulsion and is arranged in working face both sides transportation roadway or air return lane in advance, multiple fiber grating hydrostatic sensor threadiness are arranged in monitoring holes, and aperture fiber grating data collecting system is connected with hole inner fiber grating water pressure monitoring system and is installed on monitoring holes aperture.The present invention can realize that roof water producing fractures develop the high-precision, essential safety and monitoring in real time of overall process with the advance of the face in advance and upwards.
Description
Technical field
The present invention relates to a kind of roof height of water flowing fractured zone method of real-time, especially a kind of high-precision and sheet
The underground of matter safety monitors roof water producing fractures with the advance of the face in advance with the method for upward growth course in real time, belongs to
The coal mine roof plate water damage Prevention Technique field in mineral engineering field.
Background technology
Growth course, spatial form, maximum height of roof water producing fractures etc. are characterized in designing barrier pillar
Size and the most important parameters for formulating top plate water damage Prevention Technique scheme, to prevent top plate goaf water or top plate aquifer water
Secondary disaster caused by gushing water, the large-scale coal mining underbuildings such as surface water body or railway of control.The height of roof water producing fractures
Precision, real-time, field monitoring are always engineering and the technical barrier that academia is constantly inquired into.
Currently, being influenced by water producing fractures complexity, underground monitoring constraint etc., roof water producing fractures scene is seen
(prison) survey still only focuses on the observation for adopting rear water flowing fractured zone maximum height value.Water flowing fractured zone maximum height value field monitoring side
Method includes mainly surface drilling flushing liquor wastage observation method, down-hole drilling subsection water injection method, down-hole drilling geophysics electrical method
With micro seismic monitoring etc..
Surface drilling flushing liquor wastage observation method monitoring result is more reliable, but quantities is big and high expensive, belongs to
Typically adopt rear observation procedure；Down-hole drilling subsection water injection process is easily affected by many factors, make monitoring result representativeness and
Reliability reduces, also to adopt rear observation procedure；Down-hole drilling geophysical exploration method is often difficult to clearly screen to monitor to split
The transmissibility of gap and keep result bigger than normal, can be advanced or observe after adopting；Above-mentioned three classes method is all difficult to realize water producing fractures and sky simultaneously
Between developmental morphology real-time live monitoring.Engineering and academia always strive to seek simpler, reliable water producing fractures to develop
Journey field monitoring method.
Invention content
In order to overcome the above-mentioned deficiency of the prior art, a kind of high-precision of present invention offer, essential safety roof water guide
Fissure zone height method of real-time, the monitoring method can realize roof water producing fractures with the advance of the face it is advanced and to
High-precision, essential safety and the monitoring in real time of upper development overall process, can be provided for the formulation of top plate water damage prevention technique measure can
The water producing fractures height parameter leaned on.
The present invention solve its technical problem the technical solution adopted is that：Include the following steps：
1) cloth hole：What two or more apertures were suitably supplied water face upward, and the advanced cloth of stope direction of propulsion is met in monitoring drilling
It is placed in working face both sides transportation roadway or air return lane；2) mounting hole inner fiber grating water pressure monitoring system：By multiple fiber grating liquid
Pressure sensor threadiness is arranged in monitoring holes, and fiber grating hydrostatic sensor position in monitoring holes is true according to target monitoring height
Fixed, multiple fiber grating hydrostatic sensors use the Parallel Data transmission mode of multiloop, multichannel；3) fiber grating number is installed
According to acquisition system：Monitoring holes aperture install fiber grating data collecting system, and with hole inner fiber grating water pressure monitoring system
It is connected.
Compared with prior art, a kind of high-precision of the invention, essential safety roof height of water flowing fractured zone are supervised in real time
Survey method meets working face extraction direction arrangement and construction in advance by adopting line in the transportation roadway of working face both sides, air return lane or stop
Two or more monitoring drillings of facing upward, and fiber grating water pressure monitoring system is installed in hole and fiber grating is set in aperture
Data collecting system, full the mistake that roof water flowing fractured zone is developed in advance and upwards with the advance of the face can be monitored in real time
Journey, including the precocious attributes of water producing fractures, growth course, spatial shape and maximum height value, drilling project amount it is small and monitoring at
This is low；The present invention " essence " safety using grating fibers；Grating fibers signal accuracy height, long transmission distance, are suitable in overlength
Arrangement and monitoring in drilling, and " high-precision ".
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the principle schematic of one embodiment of the invention.
Fig. 2 is the structural schematic diagram that one embodiment of the invention carries out cloth hole.
In figure, 1, fiber grating hydrostatic sensor, 2, data transmission fiber, 3, aperture flange；4, aperture water supply installation, 5,
Fiber grating data collecting system, 6, exhaust pipe and gas exhausting valve, 7, drainpipe and control valve, 8, orifice sleeve, 9, monitoring
Drilling, 10, unilateral tunnel, 11, stop adopting line side tunnel, 12, advanced monitoring drilling of facing upward, 13, working face extraction direction of propulsion,
14, working face open-off cut eye, 15, stop adopting line.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The every other embodiment that member is obtained without making creative work, belongs to protection scope of the present invention.
The high-precision of the present invention, essential safety roof height of water flowing fractured zone method of real-time, including cloth hole side
Case, hole inner fiber grating water pressure monitoring system and aperture fiber grating data collecting system 5 are, it can be achieved that roof water producing fractures
With the advance of the face, high-precision, the essential safety of development overall process monitor in real time in advance and upwards.
Wherein, cloth hole scheme is：A kind of scheme is that two or more apertures of cloth hole scheme in unilateral tunnel 10 suitably supply
The monitoring drilling 12 of facing upward of water, away from 14 suitable distance of working face open-off cut eye, meet stope direction of propulsion 13, be arranged in work in advance
Make face unilateral side transportation roadway or air return lane (see Fig. 2)；Two or more advanced monitoring drillings 12 of facing upward can control roof and lead
The pressure of supply water of advanced and upward growth course, maximum height and the spatial shape of water crack gap, aperture water supply installation 4 is controllable and omits
Higher than target monitoring height；Another scheme is bored in the multiple monitorings of facing upward of 11 arrangements in line side tunnel that stop adopting for stopping adopting 15 side of line
Hole 12, arrangement principle and monitoring technology were required with last scheme.
The process of mounting hole inner fiber grating water pressure monitoring system is：The linear arrangement of multiple fiber grating hydrostatic sensors 1
In in monitoring drilling 9, fiber grating hydrostatic sensor 1 determines position in monitoring drilling 9 according to target monitoring height, optical fiber light
1 precision of grid hydrostatic sensor is high and essential safety, multiple fiber grating hydrostatic sensors 1 use the parallel connection of multiloop, multichannel
Data transfer mode.
The process of mounting hole fiber grating data collecting system 5 is：Fiber grating data collecting system 5 and hole inner fiber
Grating water pressure monitoring system (i.e. fiber grating hydrostatic sensor 1 and data transmission fiber 2) is connected and is installed on monitoring holes aperture,
Fiber grating data collecting system 5 can acquire, store and show 1 hydraulic pressure data of each fiber grating hydrostatic sensor, according to prison
Measuring point fiber grating hydrostatic sensor 1 hydraulic pressure " ladder " decay characteristics sentence the time of disconnected water producing fractures development and position in real time.
The concrete operation step of embodiment illustrated in fig. 1 is as follows：
1) it adopts line in the transportation roadway of working face both sides, air return lane or stop and meets working face extraction direction arrangement and construction two in advance
A or multiple monitoring drillings 9, a variety of monitoring patterns are shown in Fig. 2；Cloth hole follows multiple drillings and controls water producing fractures to greatest extent
Carrying space form principle；
2) synchronous, parallel installation fiber grating water pressure monitoring system and exhaust apparatus in hole；Monitoring 9 aperture sizes of drilling need
Meet monitoring system installation requirement, when installation pays attention to protecting fiber grating hydrostatic sensor 1 and data transmission fiber 2, accurate to remember
1 actual installation position of each fiber grating hydrostatic sensor is recorded, maximum target monitoring height is more than top plate height of water flowing fractured zone
Empirical value；
3) mounting hole flange 3 ensures that the safety such as data transmission fiber 2, exhaust pipe, feed pipe, drainpipe passes through in hole
And sealing and orifice sleeve 8 is fixed on aperture flange 3, it is ensured that 3 good water-stagnating effect of aperture flange；
4) grating fibers in connection stretching aperture are to fiber grating data collecting system 5, while connecting feed pipe to aperture
Water supply installation 4, exhaust pipe to gas exhausting valve 6, drainpipe to draining control valve 7；Examine fiber grating water pressure monitoring system, hole
Whether confession water installations 4, gas exhausting valve 6 and draining control valve 7 are normal, and the stage is monitored into height of water flowing fractured zone；
5) formal monitoring is divided into the advanced monitoring of hydraulic pressure background values in hole and two stages of top plate water producing fractures development monitoring, according to
According to time, position and the evolutionary process of hydraulic pressure background values " ladder " shape variation real-time judge top plate water producing fractures development in hole；Together
When, it is aided with the tracking observations such as back production fltting speed, back production height, water burst in face phenomenon, roof weighting phenomenon, people's track record
These data, to the result of preferably additional explanation invention monitoring；
6) end condition is monitored：Ileal neobladder has completely passed into 1 monitoring range of fiber grating hydrostatic sensor, top plate water guide
The fiber grating hydraulic pressure that lowermost end is no longer developed to the fiber grating hydrostatic sensor 1 of higher height or has developed in crack passes
Sensor 1；
7) equipment used in water flowing fractured zone monitoring is withdrawn, monitoring data are handled, submits water producing fractures Monitoring Result.
The present invention has the advantages that essential safety and high-precision, and " essential safety " is meant that：Using grating fibers, because
And " essence " safety, it is not related to monitoring system because of leak electric leakage monitoring failure problem yet；The meaning of its " high-precision " is：Grating light
Optical fiber signaling long transmission distance, precision is high, is suitable for arranging and monitoring in ultra-long drilled holes.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is every according to
According to the technical spirit of the present invention, any simple modification and same variation are made to above example, each fall within the guarantor of the present invention
Within the scope of shield.
Claims (2)
1. a kind of high-precision, essential safety roof height of water flowing fractured zone method of real-time, characterized in that including following
Step：
1) cloth hole：What two or more apertures were suitably supplied water face upward, and the advanced cloth of stope direction of propulsion is met in monitoring drilling (9)
It is placed in working face both sides transportation roadway or air return lane；
2) mounting hole inner fiber grating water pressure monitoring system：Multiple fiber grating hydrostatic sensor (1) threadiness are arranged in monitoring
In hole, fiber grating hydrostatic sensor (1) position in monitoring holes is determined according to target monitoring height, multiple fiber grating hydraulic pressure
Sensor (1) uses the Parallel Data transmission mode of multiloop, multichannel；
3) mounting hole fiber grating data collecting system (5)：Fiber grating data collecting system is installed in monitoring holes aperture
(5), and with hole inner fiber grating water pressure monitoring system it is connected.
2. high-precision according to claim 1, essential safety roof height of water flowing fractured zone method of real-time,
It is characterized in, concrete operation step is as follows：
1) the transportation roadway of working face both sides, air return lane or stop adopt line meet working face extraction direction in advance arrangement and construction two or
Multiple monitoring drillings (9) of facing upward, cloth hole follow multiple drillings and control water flowing fractured zone spatial shape principle to greatest extent；
2) synchronous, parallel installation fiber grating water pressure monitoring system and exhaust apparatus in monitoring drilling (9)；Monitoring drilling (9)
Aperture size need to meet monitoring system installation requirement, protection fiber grating hydrostatic sensor (1) and data transmission fiber when installation
(2), each fiber grating hydrostatic sensor (1) the actual installation position of accurate recording, maximum target monitoring height are led more than top plate
Water fissure zone height empirical value；
3) mounting hole flange (3) ensure that data transmission fiber (2), exhaust pipe, feed pipe, drainpipe pass through safely simultaneously in hole
Sealing and orifice sleeve (8) is fixed on aperture flange (3)；
4) data transmission fiber (2) in connection stretching aperture is to fiber grating data collecting system (5), while connecting feed pipe extremely
Aperture water supply installation (4), exhaust pipe to gas exhausting valve (6), drainpipe to draining control valve (7)；Examine fiber grating hydraulic pressure
Whether monitoring system, aperture water supply installation (4), gas exhausting valve (6) and draining control valve (7) are normal, into water flowing fractured zone
The height monitoring stage；
5) formal monitoring is divided into the advanced monitoring of hydraulic pressure background values in hole and two stages of top plate water producing fractures development monitoring, according to hole
Time, position and the evolutionary process of interior hydraulic pressure background values " ladder " shape variation real-time judge top plate water producing fractures development；Meanwhile it is auxiliary
With back production fltting speed, the tracking observation of back production height, water burst in face phenomenon, roof weighting phenomenon；
6) end condition is monitored：Ileal neobladder has completely passed into fiber grating hydrostatic sensor (1) monitoring range, and top plate water guide is split
The fiber grating hydraulic pressure that gap no longer develops to the fiber grating hydrostatic sensor (1) of higher height or have developed to lowermost end passes
Sensor (1)；
7) it withdraws water flowing fractured zone and monitors arranged all devices, handle monitoring data, submit water producing fractures Monitoring Result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711335414.XA CN108318931B (en) | 2017-12-14 | 2017-12-14 | High-precision and intrinsically safe real-time monitoring method for height of coal seam roof water flowing fractured zone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711335414.XA CN108318931B (en) | 2017-12-14 | 2017-12-14 | High-precision and intrinsically safe real-time monitoring method for height of coal seam roof water flowing fractured zone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108318931A true CN108318931A (en) | 2018-07-24 |
| CN108318931B CN108318931B (en) | 2019-12-31 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596433A (en) * | 2018-12-13 | 2019-04-09 | 天地科技股份有限公司 | Crack of coal-mine roof Evolution dynamics detection device and method |
| CN110107284A (en) * | 2019-04-28 | 2019-08-09 | 扎赉诺尔煤业有限责任公司 | A kind of brill examining system and method detecting height of water flowing fractured zone by hydraulic pressure |
| CN110987039A (en) * | 2019-12-17 | 2020-04-10 | 安徽理工大学 | Method for testing damage depth of coal seam roof and floor after working face extraction |
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| CN109596433A (en) * | 2018-12-13 | 2019-04-09 | 天地科技股份有限公司 | Crack of coal-mine roof Evolution dynamics detection device and method |
| CN110107284A (en) * | 2019-04-28 | 2019-08-09 | 扎赉诺尔煤业有限责任公司 | A kind of brill examining system and method detecting height of water flowing fractured zone by hydraulic pressure |
| CN110107284B (en) * | 2019-04-28 | 2022-08-05 | 扎赉诺尔煤业有限责任公司 | Drilling and testing system and method for detecting height of water flowing fractured zone through water pressure |
| CN110987039A (en) * | 2019-12-17 | 2020-04-10 | 安徽理工大学 | Method for testing damage depth of coal seam roof and floor after working face extraction |
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| CN108318931B (en) | 2019-12-31 |
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