CN1834405A - Remote monitoring precasting method of empty zone hard top plate - Google Patents
Remote monitoring precasting method of empty zone hard top plate Download PDFInfo
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- CN1834405A CN1834405A CN 200610043657 CN200610043657A CN1834405A CN 1834405 A CN1834405 A CN 1834405A CN 200610043657 CN200610043657 CN 200610043657 CN 200610043657 A CN200610043657 A CN 200610043657A CN 1834405 A CN1834405 A CN 1834405A
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Abstract
A broadcasting method of worked-out section hard roof by remote sensing means includes forming remote sensing network by drilling hole line with interval distance of 15-25 m near last row support at heading stope then erecting transducer and extension sets being all connected to ground host computer in return air and transportation tunnels, repeating said process when each 15-20 m of working face is pushed on, processing collected signals to be separation layer speed by host computer, issuing alarm of roof inbreak by both host computer and extension sets when separation layer valve displayed by any transducer is over threshold.
Description
Technical field
The invention belongs to the coal mining technical field, especially the monitoring of stope working surface of coal mines roof collapse.
Background technology
In coal mining, when top board is outstanding when revealing certain area, top board will inbreak.When roof collapse, will support or pillar that keep the stope safe space be impacted.Top board is hard more, and is just big more to the impact damage of support or pillar, pounds sometimes to collapse or push away collapse scaffold working face or pillar, causes personnel's injures and deaths.Usually, the most dangerous top plate thickness is the direct top of 3～5 meters of bottoms, very harmful when its large tracts of land inbreak.
Monitoring and prediction for the stope roof collapse, following three kinds of modes are arranged usually: the one, along the stope incline direction every 10～30 meters, a quantitative changeization if survey line, the artificial observation pillar working resistance and the post of living contract infers that top board whether will inbreak; The 2nd, at return airway (or go up crossheading) with equidistantly arrange crush measuring point and pillar working resistance measuring points in advance every 3～5 meters in transportation lane (or crossheading) down down, amount of crushing (or subsidence velocity) by each measuring point and pillar work change in resistance infer that goaf top plate whether will inbreak; The 3rd, at return airway (or go up crossheading) with establish microseism or acoustic emission every 20～30 meter amperes in transportation lane (or crossheading) down coal body or the top board down and pop one's head in and carry out acoustic sounding, infer whether top board will inbreak.For above-mentioned first kind, second method, the big young pathbreaker of each measuring point place's amount of crushing and the pillar amount of contracting and this place pillar supporting quality have much relations, and simultaneously artificial error in reading is bigger, causes the wrong report of roof collapse easily; For the third method, because the complexity of the sedimentary structure of top board own, numerous cracks can spread forms and the acoustic signals that is produced when expanding simultaneously are very complicated, be difficult to obtain one-to-one relationship between top board rupture location and the sound wave, become an also insurmountable difficult problem at present, utilizing sound wave to carry out the roof collapse forecast can't engineering demands.Particularly for tight roof, belong to not that the dead zone easily falls on a large scale, be difficult to forecast with unerring accuracy with said method, very easily have an accident.
Present useful delamination monitoring sensor detects the return airway (or going up crossheading) and the absciss layer situation of the interior bolt support top board in transportation lane (or following crossheading) down, but also is not used in the monitoring and prediction of roof collapse on a large scale of actual mining face goaf.
Summary of the invention
The objective of the invention is deficiency, propose a kind of remote measurement forecasting procedure when carrying out the tight roof inbreak with the absciss layer detector at above-mentioned roof collapse forecasting procedure.
Technical scheme of the present invention is:
One, in stope, punches
Near row's pillar position, back, every interval 15-25 rice is made a call to a gang drill hole with rig in top board in stope.
Two, install remote measurement absciss layer sensor in the boring
In the hole that work plane bores, install remote measurement absciss layer sensor, four induction points of each sensor be distributed in the hole base on schedule, deep measuring point, superficial part measuring point and surperficial reference point, telemetering pickup converts displacement signal to electromagnetic signal, is transferred in return airway (or going up crossheading) and the following extension set that transports in the lane (or following crossheading) by shielded cable.In order to prevent that local roof collapse smashes cable in the goaf, with the pvc pipe suit of intensity height, good toughness.
Three, the every propelling of work plane 15-20 rice repeats above-mentioned one, two steps, along with the propelling of work plane, forms the telemetry monitoring site of (15-20) * (15-20) rice in the goaf.
Four, roof delamination monitoring transfer of data, processing and early warning
At first by main frame according to the good acquired signal time interval of predetermined set, transmit acquired signal instruction to each absciss layer sensor; When each absciss layer sensor is received the acquired signal order, the displacement signal of each measuring point is gathered and converted displacement signal to electromagnetic signal transmission to ground host; Ground host converts electromagnetic signal to displacement signal, and is processed into the absciss layer speed of each measuring point; When absciss layer speed during greater than the absciss layer warning threshold value of roof collapse, ground host and down-hole extension set are reported to the police simultaneously automatically, forecast the inbreak thickness and the place of top board.
Good effect of the present invention is:
One, inside ceiling panel absciss layer in goaf is the most directly omen of roof collapse, therefore forecasts roof collapse by delamination monitoring, and its accuracy rate 100% is the safe working in coal seam under the tight roof condition like this, and safety guarantee is provided.
Two, goaf inside ceiling panel absciss layer is carried out real-time telemetry, other the artificial inexact data of sum of errors that can avoid artificial reading to bring makes monitored data the most reliable.
Three, adopt absciss layer speed as warning index, the drawback that threshold value differs greatly in the time of can avoiding as the big limestone roof collapse of friable sandstone and ductility like this is convenient to realize for the realization of dissimilar top boards by the computer automatic early-warning.
Show that through 12 tests at the scene to tight roof inbreak forecast accuracy 100%, most important effect is played in exploitation to ensuring safety.
Description of drawings
Fig. 1 is stope and goaf remote measurement absciss layer sensor plane of arrangement figure, and Fig. 2 is that the absciss layer sensor is installed generalized section, and Fig. 3 is that the remote measurement forecast system constitutes schematic diagram.
Marginal data: 1-is the transportation lane down, 2-return airway, 3a-return airway extension set, 3b-is transportation lane extension set down, 4a-H cable, 4b-H cable, the 5-work plane, 6-articulated roof beam, 7-boring, 8-boring, 9-inbreak spoil, 10-absciss layer sensor, 11-hole base on schedule, 12-deep measuring point, 13-superficial part measuring point, 14-top board; The common carrier wire of 15-, 16-main frame, 17-computer, 18-printer.
Below in conjunction with the description of drawings embodiments of the invention.
One, as shown in Figure 1, carrying out along with work plane 5 seam minings, arranging the pillar place near work plane 5 backs, make a call to a gang drill hole 7 along 20 meters of every spacings of work plane 5 incline directions to top board 14, drilling depth surpasses tight roof thickness, again as shown in Figure 2, install absciss layer sensor 10, four induction points of absciss layer sensor 10 be distributed in the hole base on schedule 11, deep 12 measuring points, superficial part measuring point 13 and vent surface, according to the difference decision deep measuring point 12 of roof strata layering, the position of superficial part measuring point 13.
20 meters of work plane 5 every propellings are made a call to a gang drill hole 8 and are installed absciss layer sensor 10 as previously mentioned.
Two, as shown in Figure 1, the H cable 4a with work plane 5 first half absciss layer sensors is connected to work plane 5 return airway extension set 3a; The H cable 4b of work plane 5 Lower Half absciss layer sensors is connected to 5 times transportations of work plane lane extension set 3b.
Three, as shown in Figure 3, work plane 5 return airway extension set 3a and 5 times transportations of work plane lane extension set 3b are linked with ground host 16 by common carrier wire 15, ground host 16 is connected with computer 17, printer 18 then.
Four, the process based on absciss layer forecast roof collapse is: at first by main frame 16 according to the good acquired signal time interval of predetermined set, to the instruction that extension set 3a, 3b assign acquired signal, further transmit the acquired signal instruction to each absciss layer sensor 10 by common carrier wire 15 by H cable 4a, 4b by extension set 3a, 3b.When each absciss layer sensor 10 is received the acquired signal order, the displacement signal of deep measuring point 12, superficial part measuring point 13 gathered convert displacement signal to electromagnetic signal, and further be transferred to ground host 16 by common carrier wire 15 by extension set 3a, 3b.Electromagnetic signal further converts displacement signal to by main frame 16.The displacement signal of the different depth measuring point of each absciss layer sensor 10 being gathered according to the computer program of internal memory by computer 17 is handled then, converts the absciss layer speed of deep measuring point 12 and superficial part measuring point 13 automatically to.When absciss layer speed during greater than the absciss layer warning threshold value of roof collapse, ground host 16 and down-hole extension set 3 are reported to the police simultaneously automatically, forecast the inbreak thickness and the place of top board 14.
This programme is the most effective to the tight roof condition, for adopting with emitting breaking roof to be not suitable for.
Claims (1)
1, the remote measurement forecasting procedure of a kind of goaf tight roof, it may further comprise the steps:
(1) arrange the pillar position near the back in stope, every interval 15-25 rice is made a call to a gang drill hole with rig in top board;
(2) in boring good hole, install remote measurement absciss layer sensor, four induction points of each sensor be distributed in the hole base on schedule, deep reference point, superficial part reference point and surperficial reference point, telemetering pickup is connected in return airway and the following extension set that transports in the lane by shielded cable, and each extension set is connected on ground control main frame and the computer by carrier wire;
(3) the every propelling of work plane 15-20 rice repeats above-mentioned (one), (two) step, along with the propelling of work plane, forms the telemetry monitoring site of (15-20) * (15-20) rice in the goaf;
(4) main frame is according to the good acquired signal time interval of predetermined set, transmit the acquired signal instruction to each absciss layer sensor, when each absciss layer sensor is received the acquired signal order, the displacement signal of each measuring point is gathered and converted displacement signal to electromagnetic signal transmission to ground host, ground host converts electromagnetic signal to displacement signal, and is processed into the absciss layer speed of each measuring point; When absciss layer speed during greater than the absciss layer warning threshold value of roof collapse, ground host and down-hole extension set are reported to the police simultaneously automatically, forecast the inbreak thickness and the place of top board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100436571A CN100494636C (en) | 2006-04-13 | 2006-04-13 | Remote monitoring predicting method of empty zone hard top plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100436571A CN100494636C (en) | 2006-04-13 | 2006-04-13 | Remote monitoring predicting method of empty zone hard top plate |
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| Publication Number | Publication Date |
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| CN1834405A true CN1834405A (en) | 2006-09-20 |
| CN100494636C CN100494636C (en) | 2009-06-03 |
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| CNB2006100436571A Expired - Fee Related CN100494636C (en) | 2006-04-13 | 2006-04-13 | Remote monitoring predicting method of empty zone hard top plate |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101240718B (en) * | 2008-03-10 | 2010-06-16 | 山东科技大学 | Down-hole mining space top board separation layer prealarming method |
| CN103195433A (en) * | 2013-03-20 | 2013-07-10 | 中国矿业大学(北京) | Method for speedy drivage in large section coal road |
| CN103244185A (en) * | 2013-05-10 | 2013-08-14 | 山东科技大学 | Early warning method for instability of bolt-supported roadway roof separation |
| CN105738471A (en) * | 2014-12-11 | 2016-07-06 | 安徽惠洲地质安全研究院股份有限公司 | Portable intelligent electronic wall-tapping and roof-knocking apparatus |
| CN106761935A (en) * | 2017-01-09 | 2017-05-31 | 广东安元矿业勘察设计有限公司 | The stability monitoring method of goaf top operation |
| CN109959459A (en) * | 2019-04-12 | 2019-07-02 | 枣庄矿业集团新安煤业有限公司 | Scalability temperature measuring device |
| CN110780354A (en) * | 2019-11-05 | 2020-02-11 | 重庆交通大学 | Device and method for intelligently monitoring caving degree of karst and goaf roof |
| CN112554952A (en) * | 2020-12-18 | 2021-03-26 | 山东科技大学 | Method for judging impact risk of three hard coal seams by window strong-damage method |
-
2006
- 2006-04-13 CN CNB2006100436571A patent/CN100494636C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101240718B (en) * | 2008-03-10 | 2010-06-16 | 山东科技大学 | Down-hole mining space top board separation layer prealarming method |
| CN103195433A (en) * | 2013-03-20 | 2013-07-10 | 中国矿业大学(北京) | Method for speedy drivage in large section coal road |
| CN103195433B (en) * | 2013-03-20 | 2015-02-18 | 中国矿业大学(北京) | Method for speedy drivage in large section coal road |
| CN103244185A (en) * | 2013-05-10 | 2013-08-14 | 山东科技大学 | Early warning method for instability of bolt-supported roadway roof separation |
| CN103244185B (en) * | 2013-05-10 | 2015-06-24 | 山东科技大学 | Early warning method for instability of bolt-supported roadway roof separation |
| CN105738471A (en) * | 2014-12-11 | 2016-07-06 | 安徽惠洲地质安全研究院股份有限公司 | Portable intelligent electronic wall-tapping and roof-knocking apparatus |
| CN105738471B (en) * | 2014-12-11 | 2018-06-19 | 安徽惠洲地质安全研究院股份有限公司 | A kind of smart electronics tap portable instrument |
| CN106761935A (en) * | 2017-01-09 | 2017-05-31 | 广东安元矿业勘察设计有限公司 | The stability monitoring method of goaf top operation |
| CN109959459A (en) * | 2019-04-12 | 2019-07-02 | 枣庄矿业集团新安煤业有限公司 | Scalability temperature measuring device |
| CN110780354A (en) * | 2019-11-05 | 2020-02-11 | 重庆交通大学 | Device and method for intelligently monitoring caving degree of karst and goaf roof |
| CN110780354B (en) * | 2019-11-05 | 2022-07-08 | 重庆交通大学 | Device and method for intelligently monitoring caving degree of karst and goaf roof |
| CN112554952A (en) * | 2020-12-18 | 2021-03-26 | 山东科技大学 | Method for judging impact risk of three hard coal seams by window strong-damage method |
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| Publication number | Publication date |
|---|---|
| CN100494636C (en) | 2009-06-03 |
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