CN104373154A - Stability monitoring method of roadway top plate - Google Patents
Stability monitoring method of roadway top plate Download PDFInfo
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- CN104373154A CN104373154A CN201410528049.4A CN201410528049A CN104373154A CN 104373154 A CN104373154 A CN 104373154A CN 201410528049 A CN201410528049 A CN 201410528049A CN 104373154 A CN104373154 A CN 104373154A
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- tunnel
- pressure monitor
- monitoring
- ore pressure
- analysis result
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21F17/185—Rock-pressure control devices with or without alarm devices; Alarm devices in case of roof subsidence
Abstract
The invention discloses a stability monitoring method of a roadway top plate. The method comprises the following steps: when a roadway is forwards propelled for a distance, a mine pressure monitoring station for monitoring the roadway is arranged in the roadway propelling position; mine pressure monitoring data of mine pressure monitoring is obtained, drilling detection data of drilling detection is obtained, and acoustic emission observation data of acoustic emission observation is obtained; the mine pressure monitoring data is processed and analyzed to obtain a mine pressure monitoring analysis result, the drilling detection data is processed and analyzed to obtain a drilling detection analysis result, and the acoustic emission observation data is processed and analyzed to obtain an acoustic emission analysis result; and a roadway overall support effect condition is obtained through contrastive analysis, and if the roadway overall support effect condition comprises forewarning information of deformation instability of the roadway top plate, the prediction and the warning are performed for the stability of the roadway top plate. The method realizes the prediction and the warning for the stability of the roadway top plate through setting the mine pressure monitoring station for monitoring the roadway.
Description
Technical field
The present invention relates to tunnel correlative technology field, particularly a kind of back stability monitoring method.
Background technology
Roadway excavation can cause the redistribution of country rock body stress, cause roadway surrounding rock unstable failure, thus cause the generation of various accident, and the ratio that roof accident accounts for coal production accident is the highest, therefore must carry out dynamic monitoring and prediction to back stability, ensure the safety and high efficiency of mine.In coal production, back is monitored continuously, timely grasp top board dynamic change situation, the accurate information of roof deformation and absciss layer etc. can not only be obtained, the overlying strata characteristics of motion under various roof condition can also be gone out by infers and forecast, the hidden dangers such as the sign of top board unstability can be found early, to take emergency measures, avoid the generation of accident.Traditional Roof Monitor technical method mainly comprises displacement and pressure monitoring, these methods are easy to implement, are easily understood, but more manpower need be equipped with, and the authenticity of data is difficult to pass judgment on and grasp, more be difficult to realize monitoring continuously and information content is less, constrain the development of Roof Monitor technology to a certain extent.And how to realize carrying out continuously back surrounding rock stability, in real time and the forecast of accuracy monitoring and predicting be current problem demanding prompt solution, this affects the safety and high efficiency in colliery.
Summary of the invention
Based on this, be necessary to fail to realize to carry out continuously back surrounding rock stability for prior art, in real time and the technical problem forecast of accuracy monitoring and predicting, provide a kind of back stability monitoring method.
A kind of back stability monitoring method, comprising:
When distance is pushed ahead in tunnel, arrange the ore pressure monitor station of monitoring tunnel in propelling position, described tunnel, the Contents for Monitoring at described ore pressure monitor station comprises: ore pressure monitor, bore detecting and sound emission are observed;
Obtain the ore pressure monitor data of described ore pressure monitor, obtain the bore detecting data of described bore detecting, obtain the sound emission observed data that described sound emission is observed;
Treatment Analysis is carried out to described ore pressure monitor data and obtains ore pressure monitor analysis result, Treatment Analysis is carried out to described bore detecting data and obtains bore detecting analysis result, Treatment Analysis is carried out to described sound emission observed data and obtains acoustic emission analysis result;
Described ore pressure monitor analysis result, described bore detecting analysis result and described acoustic emission analysis result are analyzed, draw tunnel integer support effect situation, if described tunnel integer support effect situation comprises the precursor information of back deformation instability, then prediction alarm is carried out to back stability.
The present invention is by arranging the ore pressure monitor station of monitoring tunnel, and the Contents for Monitoring according to ore pressure monitor station is analyzed, thus realizes carrying out prediction alarm to tunnel roof stabilisation.
Accompanying drawing explanation
Fig. 1 is the workflow diagram of a kind of back stability monitoring method of the present invention;
Fig. 2 be preferred embodiment chats pressure monitoring station schematic diagram is set.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
Be illustrated in figure 1 the workflow diagram of a kind of back stability monitoring method of the present invention, comprise:
Step S101, when distance is pushed ahead in tunnel, arrange the ore pressure monitor station of monitoring tunnel in propelling position, described tunnel, the Contents for Monitoring at described ore pressure monitor station comprises: ore pressure monitor, bore detecting and sound emission are observed;
Step S102, obtains the ore pressure monitor data of described ore pressure monitor, obtains the bore detecting data of described bore detecting, obtains the sound emission observed data that described sound emission is observed;
Step S103, Treatment Analysis is carried out to described ore pressure monitor data and obtains ore pressure monitor analysis result, Treatment Analysis is carried out to described bore detecting data and obtains bore detecting analysis result, Treatment Analysis is carried out to described sound emission observed data and obtains acoustic emission analysis result;
Step S104, described ore pressure monitor analysis result, described bore detecting analysis result and described acoustic emission analysis result are analyzed, draw tunnel integer support effect situation, if described tunnel integer support effect situation comprises the precursor information of back deformation instability, then prediction alarm is carried out to back stability.
The present invention, in step S101, when distance is pushed ahead in tunnel, arranges the ore pressure monitor station of monitoring tunnel in propelling position, described tunnel.By being analyzed to described ore pressure monitor analysis result, described bore detecting analysis result and described acoustic emission analysis result in step S102 ~ S104, draw tunnel integer support effect situation, when described tunnel integer support effect situation comprises the precursor information of back deformation instability, then prediction alarm is carried out to back stability.By arranging the ore pressure monitor station of monitoring tunnel, thus realize carrying out prediction alarm to tunnel roof stabilisation.
Wherein in an embodiment, also comprise: when described distance is often pushed ahead in described tunnel, described ore pressure monitor station is set in propelling position, described tunnel.
Preferably, described distance is 50 meters.
Distance (50 meters) is often pushed ahead in tunnel, then arrange an ore pressure monitor station, thus can know the situation in tunnel better.The Contents for Monitoring at each ore pressure monitor station is identical.
Wherein in an embodiment, also comprise: if run into geological structural belt in tunneling process, then adjust the position at described ore pressure monitor station, or increase arranges described ore pressure monitor station.
The present embodiment runs into geological structural belt as tomography in tunneling process, fold etc., suitably adjustment survey station position or increase survey station, to carry out observational study to tunnel particular segment.
Wherein in an embodiment, the monitoring range at described ore pressure monitor station is less than or equal to 5 meters.
The present embodiment, by restriction monitoring range, to make monitored data more accurate.
Wherein in an embodiment, described ore pressure monitor comprises surface displacement monitoring, roof delamination monitoring, deep soils and rockbolt stress monitoring.
Preferably, the monitoring of described surface displacement adopts cross mensuration to help the amount of shifting near, the top board in described tunnel and the base plate amount of shifting near to two of described tunnel, and the amount of crushing in described tunnel is monitored; Described roof delamination monitoring adopts roof separation indicator to monitor the inner absciss layer of the top board in described tunnel; Described deep displacement adopts the deep displacement of multiple position extensometer to the top board in described tunnel to monitor; Described rockbolt stress monitoring adopts flat jack to carry out Real-Time Monitoring to the stressed of described anchor pole.
Preferably, described bore detecting adopts the country rock internal crack of inspection instrument for borehole to described tunnel to observe; Described sound emission is observed and is adopted the country rock internal crack active development of Acoustic radiating instrument to described tunnel to carry out real-time monitored.
Preferably, the precursor information of described back deformation instability comprises: the anchor pole avalanche that crushing of described tunnel exceedes predetermined threshold value, the roof delamination change in described tunnel exceedes predetermined threshold value, the inner surrounding rock failure degree of top board in described tunnel exceedes predetermined threshold value, the inner surrounding rock failure scope of top board in described tunnel exceedes predetermined threshold value or described tunnel.
What be illustrated in figure 2 preferred embodiment chats pressure monitoring station arranges schematic diagram.
As most preferred embodiment of the present invention, ore pressure monitor station 1, ore pressure monitor station 2, ore pressure monitor station 3, ore pressure monitor station 4 and ore pressure monitor station 5 is put at tunnel 6 lining, dynamic monitoring is carried out to back stability, reflect the state residing for current region back real-time and accurately, and prediction is carried out to roof stability.Detailed process is as follows:
When tunnel is tunneled forward to 50m, arrange roof separation indicator 11, surface displacement measurement mechanism 12, Acoustic radiating instrument 13, inspection instrument for borehole 14, multiple position extensometer 15 and flat jack 16 at this place, by these content-controls within the scope of 5m.Continue to tunnel forward with tunnel, when tunneling to 100m, 150m, 200m, 250m, arrange ore pressure monitor station 2, ore pressure monitor station 3, ore pressure monitor station 4 and ore pressure monitor station 5 respectively, Contents for Monitoring is with ore pressure monitor station 1.Then to the data analysis that ore pressure monitor records, obtain roadway surrounding rock areal deformation situation and tunnelling time, apart from the relation between boring head distance, in the anchor rod anchored scope of back and the extraneous absciss layer situation of anchoring, the back deep wall rock deformation rule of development over time, anchor pole, anchor cable axially loaded situation over time, thus obtain deformation of the surrounding rock in tunnel destructive characteristics, judge that whether this region supporting effect is good; As time goes on, repeat to carry out Continuous Observation to the boring of each survey station, obtain the broken situation of roof strata, grow the relation with the time according to the expansion of inspection instrument for borehole 14 quantitative analysis roadway surrounding rock internal crack, thus obtain whole piece back internal crack dynamic evolution rule; The umber of pulse obtain Acoustic radiating instrument 13 and energy datum carry out Treatment Analysis, obtain roadway surrounding rock internal modification and destroy and relation between pulse and energy.By pressure observation, bore detecting and sound emission interpretation of result go out the relation that each measurement factor and deformation of the surrounding rock in tunnel destroy, thus obtain the precursor information (feature) of back deformation instability.Precursor information and feature mainly comprise exception of crushing, and greatly, the inner surrounding rock failure of top board is violent, scope wide, anchor pole avalanche etc. in roof delamination change.The surface, tunnel finally ore pressure monitor obtained, deep wall rock deformation and anchor pole rope stressing conditions, the back internal crack dynamic evolution rule that bore detecting obtains and the roadway surrounding rock internal modification that sound emission obtains destroy situation and comprehensively analyze, and according to the relation that each measurement factor obtained and deformation of the surrounding rock in tunnel are destroyed, draw the overall failure and deformation of surrounding rocks situation in tunnel whether within the scope of control criterion, thus judge the integer support effect situation in tunnel and prediction is carried out to back stability.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. a back stability monitoring method, is characterized in that, comprising:
When distance is pushed ahead in tunnel, arrange the ore pressure monitor station of monitoring tunnel in propelling position, described tunnel, the Contents for Monitoring at described ore pressure monitor station comprises: ore pressure monitor, bore detecting and sound emission are observed;
Obtain the ore pressure monitor data of described ore pressure monitor, obtain the bore detecting data of described bore detecting, obtain the sound emission observed data that described sound emission is observed;
Treatment Analysis is carried out to described ore pressure monitor data and obtains ore pressure monitor analysis result, Treatment Analysis is carried out to described bore detecting data and obtains bore detecting analysis result, Treatment Analysis is carried out to described sound emission observed data and obtains acoustic emission analysis result;
Described ore pressure monitor analysis result, described bore detecting analysis result and described acoustic emission analysis result are analyzed, draw tunnel integer support effect situation, if described tunnel integer support effect situation comprises the precursor information of back deformation instability, then prediction alarm is carried out to back stability.
2. back stability monitoring method according to claim 1, is characterized in that, also comprise: when described distance is often pushed ahead in described tunnel, arranges described ore pressure monitor station in propelling position, described tunnel.
3. back stability monitoring method according to claim 2, is characterized in that, also comprise: if run into geological structural belt in tunneling process, then adjust the position at described ore pressure monitor station, or increase arranges described ore pressure monitor station.
4. back stability monitoring method according to claim 1, is characterized in that, described distance is 50 meters.
5. back stability monitoring method according to claim 1, is characterized in that, the monitoring range at described ore pressure monitor station is less than or equal to 5 meters.
6. back stability monitoring method according to claim 1, is characterized in that, described ore pressure monitor comprises surface displacement monitoring, roof delamination monitoring, deep soils and rockbolt stress monitoring.
7. back stability monitoring method according to claim 6, it is characterized in that, the monitoring of described surface displacement adopts cross mensuration to help the amount of shifting near, the top board in described tunnel and the base plate amount of shifting near to two of described tunnel, and the amount of crushing in described tunnel is monitored; Described roof delamination monitoring adopts roof separation indicator to monitor the inner absciss layer of the top board in described tunnel; Described deep displacement adopts the deep displacement of multiple position extensometer to the top board in described tunnel to monitor; Described rockbolt stress monitoring adopts flat jack to carry out Real-Time Monitoring to the stressed of described anchor pole.
8. back stability monitoring method according to claim 1, is characterized in that, described bore detecting adopts the country rock internal crack of inspection instrument for borehole to described tunnel to observe; Described sound emission is observed and is adopted the country rock internal crack active development of Acoustic radiating instrument to described tunnel to carry out real-time monitored.
9. back stability monitoring method according to claim 1, it is characterized in that, the precursor information of described back deformation instability comprises: the anchor pole avalanche that crushing of described tunnel exceedes predetermined threshold value, the roof delamination change in described tunnel exceedes predetermined threshold value, the inner surrounding rock failure degree of top board in described tunnel exceedes predetermined threshold value, the inner surrounding rock failure scope of top board in described tunnel exceedes predetermined threshold value or described tunnel.
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Cited By (8)
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| CN105116458A (en) * | 2015-09-15 | 2015-12-02 | 中国恩菲工程技术有限公司 | Dilapidation top plate or demolition top plate monitoring system |
| CN105259585A (en) * | 2015-09-15 | 2016-01-20 | 中国恩菲工程技术有限公司 | Monitoring system for caved top board or exploded top board |
| CN105298542A (en) * | 2015-11-18 | 2016-02-03 | 中国神华能源股份有限公司 | Method and system for monitoring fully-mechanized coal mining face roof |
| CN106223931A (en) * | 2016-08-31 | 2016-12-14 | 西安科技大学 | A kind of system and method monitoring the growth of prearranged pillar gob side entry retaining floor crack |
| CN107503796A (en) * | 2017-08-23 | 2017-12-22 | 山东科技大学 | A kind of cable bolting back unstability inbreak method for early warning |
| CN110470269A (en) * | 2019-08-21 | 2019-11-19 | 山东大学 | Reinforcing laneway prediction scheme is comprehensive to determine method |
| CN112378769A (en) * | 2020-11-11 | 2021-02-19 | 国家能源集团宁夏煤业有限责任公司 | Hydraulic pre-fracturing parameter determination method |
| CN115929408A (en) * | 2023-01-17 | 2023-04-07 | 河南理工大学 | System and method for monitoring coal mine roof cracks in real time in roadway driving process |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116458A (en) * | 2015-09-15 | 2015-12-02 | 中国恩菲工程技术有限公司 | Dilapidation top plate or demolition top plate monitoring system |
| CN105259585A (en) * | 2015-09-15 | 2016-01-20 | 中国恩菲工程技术有限公司 | Monitoring system for caved top board or exploded top board |
| CN105298542A (en) * | 2015-11-18 | 2016-02-03 | 中国神华能源股份有限公司 | Method and system for monitoring fully-mechanized coal mining face roof |
| CN106223931A (en) * | 2016-08-31 | 2016-12-14 | 西安科技大学 | A kind of system and method monitoring the growth of prearranged pillar gob side entry retaining floor crack |
| CN107503796A (en) * | 2017-08-23 | 2017-12-22 | 山东科技大学 | A kind of cable bolting back unstability inbreak method for early warning |
| CN110470269A (en) * | 2019-08-21 | 2019-11-19 | 山东大学 | Reinforcing laneway prediction scheme is comprehensive to determine method |
| CN110470269B (en) * | 2019-08-21 | 2021-04-16 | 山东大学 | Comprehensive determination method for roadway reinforcement plan |
| CN112378769A (en) * | 2020-11-11 | 2021-02-19 | 国家能源集团宁夏煤业有限责任公司 | Hydraulic pre-fracturing parameter determination method |
| CN115929408A (en) * | 2023-01-17 | 2023-04-07 | 河南理工大学 | System and method for monitoring coal mine roof cracks in real time in roadway driving process |
| CN115929408B (en) * | 2023-01-17 | 2023-09-19 | 河南理工大学 | Real-time monitoring system and method for coal mine roof fracture in tunneling process |
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