CN102587983A - Comprehensive early-warning observation method for coal mine rock burst - Google Patents
Comprehensive early-warning observation method for coal mine rock burst Download PDFInfo
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- CN102587983A CN102587983A CN2012100229401A CN201210022940A CN102587983A CN 102587983 A CN102587983 A CN 102587983A CN 2012100229401 A CN2012100229401 A CN 2012100229401A CN 201210022940 A CN201210022940 A CN 201210022940A CN 102587983 A CN102587983 A CN 102587983A
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Abstract
The invention discloses a comprehensive early-warning observation method for coal mine rock burst. The method includes the steps: firstly, obtaining the range of a high stress field of a rock burst coal bed; secondly, manually intervening and observing the disturbance range; and finally, performing all-dimensional dynamic monitoring. Comprehensive monitoring is realized by closely associating overburden rock movement damage of a mining face with the size and distribution of the stress field, so that the risk of rock burst is forecast, warning measures are timely taken, and rock burst accidents are avoided.
Description
Technical field
The invention belongs to the coal mining technical field.
Background technology
Bump is one of natural calamity the most serious in the interior colliery of world wide.The coal seam in the most of mines of China and rock stratum all have impact tendentiousness in various degree; Coal petrography impacts very serious under certain critical depth; Particularly along with the China's coal-mine mining depth with every year about 20m the degree of depth constantly increase; Bump is more and more serious, has become restriction China mine and has produced one of main great disastrous accident with safety.Although Chinese scholars also is far from fundamentally solving it and effectively predicts and prevent and treat problem having obtained impressive progress aspect the researchs such as bump genesis mechanism, monitoring means and control technology.The China's coal-mine mine was built in for five sixties mostly, shifted to the deep with exploitation of mineral resources as time passes, and these mines will get into deep mining, and the bump disaster problem will more become seriously, more outstanding, more general.
Aspect the bump prediction and preventing and treating; Because the time space distribution to exploiting back overlying rock motion change rule and stope surrouding rock stress field is unclear; The decision theory imperfection of developing and back production; The digging design in the bump coal seam at present relies on the statistics experience to make a strategic decision basically, thereby often appears in the region of high stress, carries out mining work in isolated island and the half isolated island coal column, for bump power source condition is provided.Inward nature's rule of the impact coal rock layer destructive process owing to be not sure under the complicated heavily stressed and big buried depth condition, thereby Hair Fixer living time, place and intensity etc. in impact ground do not reach the degree of quantitative expectation; The information acquiring technology that the bump mine generally adopts, its test parameter imperfection, the information of monitoring is also very unreliable, can only carry out the qualitative monitoring of bump; To the information that monitors not theoretically, experimentally, carry out integrated treatment on the method, the reliability of its feedback information impact ground pressure prediction is relatively poor.So bump control at present is comprehensive control, causes the waste of great amount of manpower and material resources, greatly influences organism of production, has reduced production efficiency.Aspect the bump prediction; The research of this respect has in recent years obtained great progress, but aspect the quantitative observation of dynamic stress scope, region of high stress energy release characteristic, does not also form system, reliable observation procedure; Particularly under the deep-well condition; The emollescence of rock stratum is obvious, and the judgment criterion of its dynamic stress scope is difficult to set up, and present observation method and method are difficult to obtain quantitative value.。
So the mining Design in China's coal-mine bump coal seam still rests on motion of exploitation overlying strata and the unclear developing stage of the Stress Field Distribution rule of development with implementing.This is that current coal mine rock burst accident is frequent, and particularly serious disasters and accidents are fundamentally not controlled, one of major reason that the exploitation economic benefit is low.Theoretical research and production practices prove that the bump accident is nearly all destroyed with the stress field stress intensity and the close ties that distribute with the motion of getting working face overlying strata and is in the same place.
Summary of the invention
The objective of the invention is to propose a kind of comprehensive pre-warning observation procedure for improving the integrity problem of coal mine rock burst danger forecasting.
The technical scheme that the present invention takes is:
The first step: heavily stressed the scope that obtains the bump coal seam
In bump working face of coal seam recovery process, at first in stope drift active workings along the work plane direction of advance, every interval 10-20 rice is arranged the dynamic appearance of top board, carries out the Continuous Observation speed of crushing, thus the place of the velocity jump that obtains to crush; Progressively dwindle the spacing distance of the dynamic appearance of top board then in this place, continue the Continuous Observation speed of crushing, until approaching leading accurately pressure limit value, this scope is confirmed as heavily stressed scope of top board.
Second step: human intervention observation range of disturbance
In stope drift active workings, begin from heavily stressed field edge, every interval 5-10m arranges a high sensitive stress meter along the work plane direction of advance, arranges more than 4; And 3-5 hole bored, pitch of holes 3-5m, hole depth 8-10 rice, the explosive of packing in the hole, onepull in the peak stress position in the scope of dynamic stress field in the coal seam; Detonation wave is propagated in the coal seam and decay gradually after the explosion, and the stress wave data are arrived in high sensitive stress meter observational record simultaneously, thereby determine the exergonic range of disturbance in dynamic pressure district according to the size of every stress wave video data.
The 3rd step: comprehensive dynamic monitoring
In above-mentioned definite heavily stressed field scope and the tunnel in the range of disturbance; Layout is buried many group sensitive pressure sensor underground; Spacing between group and the group is decided to be 20-40m according to stress distribution law; Every group of 2-3 sensitive pressure sensor burying 2-3 spacing 0.5m underground, and every group sensor on different depth; At first in country rock, hole when burying underground, sensitive pressure sensor is cast in the boring, and sensor signal is transferred on the data collection processor; In working face mining, data collection processor is in time handled the delta data of stress field, when reaching the early-warning parameters of system's setting, reports to the police, thereby realizes the dangerous monitoring and warning of coal mine rock burst.
Good effect of the present invention is: destruction and stress field stress intensity and the close ties that distribute are carried out comprehensive monitoring together through the getting working face overlying strata are moved; Thereby dope the dangerous and warning measure in time that bump takes place, avoid the generation of bump peril.
Description of drawings
Fig. 1 is that the dynamic appearance of top board of the present invention is arranged and dynamic stress field sketch map;
Fig. 2 is that human intervention of the present invention brings out and observation instrument layout sketch map;
Fig. 3 is the comprehensive dynamic monitoring sketch map of the present invention.
The specific embodiment
Below in conjunction with description of drawings enforcement of the present invention.
The first step: obtain dynamic stress field scope
As shown in Figure 1; In bump working face of coal seam recovery process, at first in stope drift active workings along the work plane direction of advance, every interval 10-20 rice is arranged the dynamic appearance of top board; Carry out the Continuous Observation speed of crushing, thus the place of the velocity jump that obtains to crush; Progressively dwindle the spacing distance of the dynamic appearance of top board then in this place, continue the Continuous Observation speed of crushing, until approaching leading accurately pressure limit value, this scope is confirmed as top board dynamic stress field scope.
Second step: human intervention is confirmed range of disturbance
As shown in Figure 2, in stope drift active workings, driven stress field edge begins, and every interval 5-10m arranges a high sensitive stress meter along the work plane direction of advance, arranges more than 4; And 3-5 hole bored, pitch of holes 3-5m, hole depth 8-10 rice, the explosive of packing in the hole, onepull in the peak stress position in the scope of dynamic stress field in the coal seam; Detonation wave is propagated in the coal seam and decay gradually after the explosion, and the stress wave data are arrived in high sensitive stress meter observational record simultaneously, thereby determine the exergonic range of disturbance in dynamic pressure district according to the size of every stress wave video data.
The 3rd step: comprehensive dynamic monitoring
In above-mentioned definite heavily stressed field scope and the tunnel in the range of disturbance; Layout is buried some groups of sensitive pressure sensor underground; As shown in Figure 3; Group is decided to be 20-40m with spacing between organizing according to stress distribution law, every group of 2-3 sensitive pressure sensor burying 2-3 spacing 0.5m underground, and every group sensor on different depth; At first in country rock, hole when burying underground, sensitive pressure sensor is cast in the boring, and sensor signal is transferred on the data collection processor; In working face mining, data collection processor is in time handled the delta data of stress field, when reaching the early-warning parameters of system's setting, reports to the police, thereby realizes the dangerous monitoring and warning of coal mine rock burst.
Claims (1)
1. a coal mine rock burst comprehensive pre-warning observation procedure is characterized in that,
The first step: heavily stressed the scope that obtains the bump coal seam
In bump working face of coal seam recovery process, at first in stope drift active workings along the work plane direction of advance, every interval 10-20 rice is arranged the dynamic appearance of top board, carries out the Continuous Observation speed of crushing, thus the place of the velocity jump that obtains to crush; Progressively dwindle the spacing distance of the dynamic appearance of top board then in this place, continue the Continuous Observation speed of crushing, until approaching leading accurately pressure limit value, this scope is confirmed as heavily stressed scope of top board;
Second step: human intervention observation range of disturbance
In stope drift active workings, begin from heavily stressed field edge, every interval 5-10m arranges a high sensitive stress meter along the work plane direction of advance, arranges more than four; And 3-5 hole bored, pitch of holes 3-5m, hole depth 8-10 rice, the explosive of packing in the hole, onepull in the peak stress position in the scope of dynamic stress field in the coal seam; Detonation wave is propagated in the coal seam and decay gradually after the explosion, and the stress wave data are arrived in high sensitive stress meter observational record simultaneously, thereby determine the exergonic range of disturbance in dynamic pressure district according to the size of every stress wave video data;
The 3rd step: comprehensive dynamic monitoring
In above-mentioned definite heavily stressed field scope and the tunnel in the range of disturbance; Layout is buried many group sensitive pressure sensor underground; Spacing between group and the group is decided to be 20～40m according to stress distribution law; Every group of 2-3 sensitive pressure sensor burying 2-3, spacing 0.5m underground, and every group sensor on different depth; At first in country rock, hole when burying underground, sensitive pressure sensor is cast in the boring, and sensor signal is transferred on the data collection processor; In working face mining, data collection processor is in time handled the delta data of stress field, when reaching the early-warning parameters of system's setting, reports to the police, thereby realizes the dangerous monitoring and warning of coal mine rock burst.
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| CN 201210022940 CN102587983B (en) | 2012-01-12 | 2012-01-12 | Comprehensive early-warning observation method for coal mine rock burst |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256073A (en) * | 2013-04-28 | 2013-08-21 | 中国矿业大学 | Underground coal mine pressure bump zoning grading predication method |
| CN103306722A (en) * | 2013-06-21 | 2013-09-18 | 中国矿业大学 | Detection evaluation method for microearthquake multi-dimensional information integration area of impact danger zone |
| CN104763470A (en) * | 2015-03-27 | 2015-07-08 | 辽宁工程技术大学 | One-hole multi-index intelligent rock burst pre-warning system and method for mine |
| CN105275495A (en) * | 2015-09-30 | 2016-01-27 | 山东科技大学 | Method of judging hazard of shock waves |
| CN106443784A (en) * | 2016-10-20 | 2017-02-22 | 山东科技大学 | Fault zone rock burst dangerousness monitoring method |
| CN106437702A (en) * | 2016-10-20 | 2017-02-22 | 山东科技大学 | Method for monitoring head-on impact ground pressure danger of soft coal seam roadway |
| CN108871641A (en) * | 2018-07-03 | 2018-11-23 | 中国矿业大学(北京) | The prediction technique of bump risk in a kind of exploitation of coal mine underground |
| CN109798106A (en) * | 2018-11-13 | 2019-05-24 | 辽宁工程技术大学 | A kind of prediction technique and control measure of bump risk |
| CN110905528A (en) * | 2019-12-13 | 2020-03-24 | 山东科技大学 | Method for repairing rock burst dangerous roadway by strong disturbance and segmentation |
| CN112483178A (en) * | 2020-12-18 | 2021-03-12 | 山东科技大学 | Method for judging impact risk of deep syncline shaft part stope by large window destruction method |
| CN112540400A (en) * | 2020-12-18 | 2021-03-23 | 山东科技大学 | Fracture zone dynamic pressure display strength and weakness degree judgment method |
| CN115234303A (en) * | 2022-07-28 | 2022-10-25 | 华北科技学院 | Method and device for predicting rock burst danger by fixed-force drill cuttings |
| CN116484186A (en) * | 2023-04-13 | 2023-07-25 | 煤炭科学研究总院有限公司 | Multi-field coupling-based rock burst intelligent early warning method and device |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256073B (en) * | 2013-04-28 | 2015-07-29 | 中国矿业大学 | Underground coal mine impulsion pressure degree and zoning Forecasting Methodology |
| CN103256073A (en) * | 2013-04-28 | 2013-08-21 | 中国矿业大学 | Underground coal mine pressure bump zoning grading predication method |
| CN103306722A (en) * | 2013-06-21 | 2013-09-18 | 中国矿业大学 | Detection evaluation method for microearthquake multi-dimensional information integration area of impact danger zone |
| CN104763470A (en) * | 2015-03-27 | 2015-07-08 | 辽宁工程技术大学 | One-hole multi-index intelligent rock burst pre-warning system and method for mine |
| CN105275495B (en) * | 2015-09-30 | 2017-08-29 | 山东科技大学 | A kind of method for judging shock wave harmfulness |
| CN105275495A (en) * | 2015-09-30 | 2016-01-27 | 山东科技大学 | Method of judging hazard of shock waves |
| CN106437702B (en) * | 2016-10-20 | 2018-06-19 | 山东科技大学 | Soft seam tunnel is met head on the monitoring method of bump danger |
| CN106437702A (en) * | 2016-10-20 | 2017-02-22 | 山东科技大学 | Method for monitoring head-on impact ground pressure danger of soft coal seam roadway |
| CN106443784A (en) * | 2016-10-20 | 2017-02-22 | 山东科技大学 | Fault zone rock burst dangerousness monitoring method |
| CN108871641A (en) * | 2018-07-03 | 2018-11-23 | 中国矿业大学(北京) | The prediction technique of bump risk in a kind of exploitation of coal mine underground |
| CN109798106A (en) * | 2018-11-13 | 2019-05-24 | 辽宁工程技术大学 | A kind of prediction technique and control measure of bump risk |
| CN110905528A (en) * | 2019-12-13 | 2020-03-24 | 山东科技大学 | Method for repairing rock burst dangerous roadway by strong disturbance and segmentation |
| CN112483178A (en) * | 2020-12-18 | 2021-03-12 | 山东科技大学 | Method for judging impact risk of deep syncline shaft part stope by large window destruction method |
| CN112540400A (en) * | 2020-12-18 | 2021-03-23 | 山东科技大学 | Fracture zone dynamic pressure display strength and weakness degree judgment method |
| CN115234303A (en) * | 2022-07-28 | 2022-10-25 | 华北科技学院 | Method and device for predicting rock burst danger by fixed-force drill cuttings |
| CN116484186A (en) * | 2023-04-13 | 2023-07-25 | 煤炭科学研究总院有限公司 | Multi-field coupling-based rock burst intelligent early warning method and device |
| CN116484186B (en) * | 2023-04-13 | 2023-09-08 | 煤炭科学研究总院有限公司 | Multi-field coupling-based rock burst intelligent early warning method and device |
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