CN103256073B - Underground coal mine impact mine pressure partition grading prediction method - Google Patents
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- 239000003245 coal Substances 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000005192 partition Methods 0.000 title abstract 2
- 230000008859 change Effects 0.000 claims abstract description 14
- 230000003628 erosive effect Effects 0.000 claims abstract description 14
- 238000005065 mining Methods 0.000 claims abstract description 13
- 239000011241 protective layer Substances 0.000 claims abstract description 9
- 239000010410 layer Substances 0.000 claims abstract description 8
- 238000013316 zoning Methods 0.000 claims description 41
- 231100001261 hazardous Toxicity 0.000 claims description 29
- 239000002131 composite material Substances 0.000 claims description 17
- 230000000694 effects Effects 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 238000003325 tomography Methods 0.000 claims description 12
- 238000004458 analytical method Methods 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 6
- 230000001154 acute effect Effects 0.000 claims description 5
- 230000001788 irregular Effects 0.000 claims description 5
- 238000007726 management method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000013277 forecasting method Methods 0.000 abstract 1
- 239000011435 rock Substances 0.000 description 7
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000034994 death Effects 0.000 description 1
- 231100000517 death Toxicity 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000001314 paroxysmal effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
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Abstract
A coal mine underground impact mine pressure partition grading prediction method belongs to a coal mine impact mine pressure prediction method. The forecasting method synthesizes faults, coal bed inclination angle change, coal bed erosion, areas with combined layers or thickness change, roof and floor lithology change, coal pillars left after mining of an upper protective layer and superposition influence of working face advanced bearing pressure factors, aims at mining areas with ore pressure impact danger analyzed by a comprehensive index method, determines the ore pressure impact danger degrees of different mining areas into 4 grades, namely a slight danger area, a general danger area, a medium danger area and a serious danger area, determines the different ore pressure impact danger degrees of different mining areas by analyzing the superposition influence of a plurality of ore pressure impact regional influence factors, carries out subarea grading forecasting on the mining areas, and can guide implementation of anti-impact measures according to subarea grading forecasting results.
Description
Technical field
The present invention relates to a kind of Coal Mine pressure and Forecasting Methodology, particularly a kind of underground coal mine impulsion pressure degree and zoning Forecasting Methodology.
Background technology
Along with the increasing gradually of China's pit mining degree of depth and limit of mining, the coal rock dynamic disaster taking impulsion pressure as representative is more and more serious, this dynamic disaster by the elastic energy that accumulates in coal and rock with suddenly, sharply, fierce form release, cause coal and rock vibration limits, coal petrography is thrown to roadway by power, send the strong sound, cause support and equipment, the destruction of roadway and the injures and deaths etc. of personnel, impulsion pressure has paroxysmal feature, is usually difficult to predict its when and where occurred in advance.Research at present for impulsion pressure mainly concentrates on three research aspects, and one is the research of impulsion pressure (rock burst) genesis mechanism; Two is that Hazards of Rock Burst is assessed, the research of supervision and forecast forecasting technique; Three is the research of impulsion pressure control measures.Wherein, the mechanism that impulsion pressure occurs is prediction and the basis of taking prophylactico-therapeutic measures, and the forecast of assessment of risks, supervision and forecast is then the key link of preventing and treating disaster generation.
Although after determining that through composite index law certain production zone macroscopic view entirety has the Hazards of Rock Burst of certain grade, can formulate in advance and take Preventing Countermeasures, reduce Hazards of Rock Burst to a certain extent, but because production zone scope is usually all very large, the risk degree of pressure bump that different locations has is also different, the place that impulsion pressure occurs is difficult to determine, therefore on the basis also must analyzed in composite index law, detailed subarea forecasting is carried out to large-scale production zone, and the overlaying influence of one or more Hazards of Rock Burst factors suffered by different subregion, determine the Hazards of Rock Burst grade of different subregion, greatly can improve specific aim and the accuracy rate of Hazards of Rock Burst prediction, the monitoring of impulsion pressure disaster and improvement is made to accomplish to shoot the arrow at the target.
Summary of the invention
The object of the invention is to provide a kind of underground coal mine impulsion pressure degree and zoning Forecasting Methodology, solve coal mining region scope large, the risk degree of pressure bump that different locations has is different, the very doubt problem in place that impulsion pressure occurs.
The object of the present invention is achieved like this: this Forecasting Methodology composite fault, seam inclination changes, coal seam is corroded, close layer or varied in thickness region, roof and floor lithologic changes, the coal column that up-protective layer exploitation is left over, the overlaying influence of ahead work face bearing pressure factor, for the exploiting field through composite index law analysis with Hazards of Rock Burst, the risk degree of pressure bump in different location is decided to be 4 ranks, be respectively slight hazardous area, general hazardous area, moderate risk district and grave danger district, by analyzing the overlaying influence effect of multiple impulsion pressure regional effect factor, determine the different risk degree of pressure bumps that different exploitation location has, degree and zoning prediction is carried out to production zone, can predict the outcome according to degree and zoning, instruct the enforcement of erosion control measure,
A certainly be evaluated as the production zone with Hazards of Rock Burst for given, a kind of composite index law of degree and zoning prediction, comprises following step:
(1) analyze the distribution situation of regional influence factor, determine respective influence basin and degree;
(2) determine multiple factor overlaying influences in each location, comprehensively determine the risk degree of pressure bump in each location, namely carry out the degree and zoning prediction of risk degree of pressure bump; Different location is divided into slight hazardous area, general hazardous area, moderate risk district and grave danger district;
(3) degree and zoning is predicted the outcome demarcate on mining engineering plan, and identify by different legend or color;
(4) predict the outcome according to degree and zoning, take impulsion pressure prophylactico-therapeutic measures targetedly.
Described regional factors impact comprises: (1) drop is greater than 3m, is less than the near Faults of 10m; (2) near the fold of seam inclination acute variation (being greater than 15 °); (3) coal seam is corroded, is closed layer or varied in thickness part; (4) roof and floor lithologic change location; (5) below the coal column that up-protective layer exploitation is left over; (6) near the drop tomography that is greater than 10m or the group of faults; (7) work plane advanced to goaf is when close to goaf; (8) open-off cut and stopping of the irregular face such as " hilt " shape or multiple work plane is adopted line and the region such as not to be lined up; (9) tunnel adjacent intersection regions; (10) stay and establish width irrational gob side entry coal column district; (11) ahead work face bearing pressure district; (12) near first weighting position, old top; (13) work plane goaf " square " region; (14) to keep on file coal region; (15) digging disturbance region; These 15 factors have the regional effect rules to risk degree of pressure bump different separately respectively.
Described multiple factor overlaying influences, that multiple regional effect factor has overlaying influence to impulsion pressure danger, when the superposition of multiple " seriously " grade or " seriously " grade superpose with other grade influence factor, this location or place are finally decided to be " seriously " grade; When there being 1 " medium " grade to superpose with one or more " generally " grade influence factors, this location or place are finally decided to be " medium " grade; When having 2 and the superposition of above " medium " grade influence factor, this location or place are finally decided to be " seriously " grade; When having 2 and the superposition of above " generally " grade influence factor, this location or place are finally decided to be " generally " or " medium " grade.
Described takes impulsion pressure prophylactico-therapeutic measures targetedly, pre-release mode should be adopted before working face extraction to separate in advance for serious and moderate risk district endanger and strengthen erosion control management, for general and slight hazardous area, in exploitation process, take prophylactico-therapeutic measures targetedly according to monitoring result.
Beneficial effect, owing to have employed such scheme, by analyzing the overlaying influence effect of multiple impulsion pressure influence factor, analyze the mutual superposition of multiple impulsion pressure factors in the different location of production zone, large-scale region can be divided into segment region in detail, determine the different Hazards of Rock Burst grades that different exploitation location has in detail, a kind of mine is proposed, exploiting field, work plane or roadway bump ore deposit pressure degree and zoning Forecasting Methodology, and determine the risk degree of pressure bump in each location, erosion control measure can be made more pointed, improve the Supervise prevention and cure level of impulsion pressure, the high cost simultaneously avoiding large area to take erosion control measure to bring to a certain extent, be used to guide Hazards of Rock Burst prediction, monitoring and control.Solve coal mining region scope large, the risk degree of pressure bump that different locations has is different, the very doubt problem in place that impulsion pressure occurs, and reaches object of the present invention.
Advantage: the section among a small circle that a certain extensive area is divided into specific, concrete more by the present invention carries out the way predicted, make erosion control work more pointed than traditional method and shoot the arrow at the target, and a large amount of erosion control cost can be saved, simultaneously in degree and zoning prediction, consider the overlaying influence of interior multiple factor among a small circle, only consider the way that one or several factor affects separately than ever mutually, invention increases science and the accuracy of Hazards of Rock Burst prediction.
Accompanying drawing explanation
Fig. 1 is that work plane impulsion pressure degree and zoning of the present invention predicts the outcome plan view.
Detailed description of the invention
Embodiment 1: this Forecasting Methodology composite fault, seam inclination changes, coal seam is corroded, close layer or varied in thickness region, roof and floor lithologic changes, the coal column that up-protective layer exploitation is left over, the overlaying influence of ahead work face bearing pressure factor, for the exploiting field through composite index law analysis with Hazards of Rock Burst, the risk degree of pressure bump in different location is decided to be 4 ranks, be respectively slight hazardous area, general hazardous area, moderate risk district and grave danger district, by analyzing the overlaying influence effect of multiple impulsion pressure regional effect factor, determine the different risk degree of pressure bumps that different exploitation location has, degree and zoning prediction is carried out to production zone, can predict the outcome according to degree and zoning, instruct the enforcement of erosion control measure,
A certainly be evaluated as the production zone with Hazards of Rock Burst for given, a kind of composite index law of degree and zoning prediction, comprises following step:
(1) analyze the distribution situation of regional influence factor, determine respective influence basin and degree;
(2) determine multiple factor overlaying influences in each location, comprehensively determine the risk degree of pressure bump in each location, namely carry out the degree and zoning prediction of risk degree of pressure bump; Different location is divided into slight hazardous area, general hazardous area, moderate risk district and grave danger district;
(3) degree and zoning is predicted the outcome demarcate on mining engineering plan, and identify by different legend and color;
(4) predict the outcome according to degree and zoning, take impulsion pressure prophylactico-therapeutic measures targetedly.
Described regional factors impact comprises: (1) drop is greater than 3m, is less than the near Faults of 10m; (2) near the fold of seam inclination acute variation (being greater than 15 °); (3) coal seam is corroded, is closed layer or varied in thickness part; (4) roof and floor lithologic change location; (5) below the coal column that up-protective layer exploitation is left over; (6) near the drop tomography that is greater than 10m or the group of faults; (7) work plane advanced to goaf is when close to goaf; (8) open-off cut and stopping of the irregular face such as " hilt " shape or multiple work plane is adopted line and the region such as not to be lined up; (9) tunnel adjacent intersection regions; (10) stay and establish width irrational gob side entry coal column district; (11) ahead work face bearing pressure district; (12) near first weighting position, old top; (13) work plane goaf " square " region; (14) to keep on file coal region; (15) digging disturbance region; These 15 factors have the regional effect rules to risk degree of pressure bump different separately respectively.
Described multiple factor overlaying influences, that multiple regional effect factor has overlaying influence to impulsion pressure danger, when the superposition of multiple " seriously " grade or " seriously " grade superpose with other grade influence factor, this location or place are finally decided to be " seriously " grade; When there being 1 " medium " grade to superpose with one or more " generally " grade influence factors, this location or place are finally decided to be " medium " grade; When having 2 and the superposition of above " medium " grade influence factor, this location or place are finally decided to be " seriously " grade; When having 2 and the superposition of above " generally " grade influence factor, this location or place are finally decided to be " generally " or " medium " grade.
Described takes impulsion pressure prophylactico-therapeutic measures targetedly, pre-release mode should be adopted before working face extraction to separate in advance for serious and moderate risk district endanger and strengthen erosion control management, for general and slight hazardous area, in exploitation process, take prophylactico-therapeutic measures targetedly according to monitoring result.
1, the determination of impulsion pressure hotspots
According to related science research and the statistical analysis to a large amount of impulsion pressure accident, result shows, the multiple influence area being born in following factor of impulsion pressure: (1) drop is greater than 3m, is less than the near Faults of 10m; (2) near the fold of seam inclination acute variation (being greater than 15 °); (3) coal seam is corroded, is closed layer or varied in thickness part; (4) roof and floor lithologic change location; (5) below the coal column that up-protective layer exploitation is left over; (6) near the drop tomography that is greater than 10m or the group of faults; (7) work plane advanced to goaf is when close to goaf; (8) open-off cut and stopping of the irregular face such as " hilt " shape or multiple work plane is adopted line and the region such as not to be lined up; (9) tunnel adjacent intersection regions; (10) stay and establish width irrational gob side entry coal column district; (11) ahead work face bearing pressure district; (12) near first weighting position, old top; (13) work plane goaf " square " region; (14) to keep on file coal region; (15) digging disturbance region, the stress concentration degree in these regions wants high often compared with general area, thus causes impulsion pressure occurrence frequency and intensity higher than other region.
2, each factor affects the regional allocations rule of risk degree of pressure bump
Below the risk degree of pressure bump of each factor influence area is divided.(1) drop is greater than 3m, is less than the tomography affecting laws of 10m: front and back 20m scope is grave danger district, and 20m ~ 50m scope is moderate risk district; (2) the fold affecting laws of seam inclination acute variation (being greater than 15 °): front and back 10m scope is moderate risk district; (3) affecting laws of floor or varied in thickness part is corroded, closes in coal seam: front and back 10m scope is grave danger district, and front and back 10m ~ 20m scope is moderate risk district; (4) affecting laws in roof and floor lithologic change location: front and back 50m scope is grave danger district, and front and back 50m ~ 100m scope is general hazardous area; (5) affecting laws below the coal column left over of up-protective layer exploitation: below coal column and distance coal column horizontal range 30m scope be grave danger district, distance coal column horizontal range 30m ~ 60m scope is moderate risk district; (6) drop is greater than the affecting laws near the tomography of 10m or the group of faults: distance tomography 30m scope is grave danger district, and distance tomography 30m ~ 50m scope is moderate risk district; (7) work plane advanced to goaf is close to affecting laws during goaf: close to being grave danger district within the scope of the 50m of goaf, close to being moderate risk district within the scope of the 50m ~ 100m of goaf, close to being general hazardous area within the scope of the 100m ~ 200m of goaf; (8) open-off cut and stopping of the irregular face such as " hilt " shape or multiple work plane adopts the affecting laws that line such as not to line up at the region: before and after the coal column of turning, 20m scope is grave danger district; (9) affecting laws of tunnel adjacent intersection regions: before and after " corner " intersection, 20m scope is grave danger district, before and after " triangle " intersection, 20m scope is moderate risk district; (10) affecting laws in gob side entry coal column district: be general hazardous area during section coal pillar wide 6m < D < 10m, being grave danger district during section coal pillar wide 10m≤D≤30m, is moderate risk district during section coal pillar wide 30m < D≤50m; (11) affecting laws in ahead work face bearing pressure district: the advanced 50m scope of working face wall is grave danger district, working face wall advanced 50m ~ 100 scope is moderate risk district, and working face wall advanced 100m ~ 150 scope is general hazardous area; (12) affecting laws near first weighting position, old top: front and back 20m scope is moderate risk district; (13) affecting laws in work plane goaf " square " region: before and after single stope first " square ", 50m scope is grave danger district, before and after Multi-working-surface first " square ", 50m scope is grave danger district, and list or Multi-working-surface cycle " square " front and back 20m scope are moderate risk district; (14) to keep on file the affecting laws in coal region: being general hazardous area during ground coal thickness 0m < M≤1m, is moderate risk district during ground coal thickness 1m < M≤2m, is grave danger district when ground coal thickness is greater than 2m; (15) digging disturbance region is grave danger district.
3, the superposition of multifactor impact degree
Impulsion pressure depend on gathering and release characteristic of stress concentration degree and energy, each regional factors of above-mentioned analysis all can impact the stress of certain location (point) and energy state, therefore when certain location (point) exists the acting in conjunction of multiple influence factor, its Hazards of Rock Burst is often high than the influence degree of single factor, namely Hazards of Rock Burst has the feature of multifactor overlaying influence, therefore definable; When the superposition of multiple " seriously " grade or " seriously " grade superpose with other grade influence factor, this location (point) is finally decided to be " seriously " grade; When there being 1 " medium " grade to superpose with one or more " generally " grade influence factors, this location (point) is finally decided to be " medium " grade; When having 2 and the superposition of above " medium " grade influence factor, this location (point) is finally decided to be " seriously " grade; When having 2 and the superposition of above " generally " grade influence factor, this location (point) is finally decided to be " generally " or " medium " grade.For ease of practical application, the regional allocations rule and the superposition principle that above-mentioned each factor are affected risk degree of pressure bump make form, as shown in table 1.
4, the degree and zoning prediction of impulsion pressure
When compressing into the prediction of row degree and zoning to impact ore deposit, need the multifactor addition method and composite index law with the use of, namely composite index law is first adopted to assess certain the Hazards of Rock Burst grade in region and state in a big way, for being evaluated as through composite index law without the exploiting field of Hazards of Rock Burst, work plane or tunnel, do not need to carry out degree and zoning prediction; The region with Hazards of Rock Burst is evaluated as through composite index law, adopt multifactor addition method detailed forecasts respectively compared with the risk degree of pressure bump of zonule, the influence degree after the impulsion pressure influence factor number to this region, influence basin and superposition is needed to demarcate, use different legend or colour code respectively, namely realize predicting the degree and zoning of impulsion pressure, thus according to the different risk degree of pressure bump determined and region, take erosion control measure targetedly.
Be more than the degree and zoning Forecasting Methodology of general impulsion pressure, in particular cases should according to physical condition through technology, theory analysis or determine after being expounded through peer review.
Concrete:
For given a certain production zone, first adopting composite index law to assess Hazards of Rock Burst grade and the state of this region entirety, through being evaluated as the production zone of A level without Hazards of Rock Burst, can normally producing, without the need to carrying out degree and zoning prediction again, through being evaluated as the region with Hazards of Rock Burst, implement second step, namely the multifactor addition method is adopted to carry out detailed degree and zoning prediction, first the impulsion pressure influence factor of production zone is analyzed, comprise influence basin and the influence degree of each factor, then according to multifactor overlaying influence principle, predict the risk degree of pressure bump of each segmentation, and to impulsion pressure influence factor number, influence basin and the influence degree after superposing are determined at the enterprising rower of mining engineering plan, last according to the different risk degree of pressure bump determined and region, take erosion control measure targetedly.
Define certain work plane of C level Hazards of Rock Burst below for certain ore deposit through composite index law, adopt the multifactor addition method to carry out degree and zoning prediction.
This work plane occurrence condition is, goaf side is 6m along empty transportation roadway coal pillar width, and be distributed with a drop and be greater than 3m, be less than the tomography of 10m, track lane has bifurcation of coal seam section and roof and floor lithologic change section, wherein roof and floor lithologic change section leaves the ground coal that thickness is 1 ~ 2m, will experience first weight, single stope first " square " is pressed, double face first " square " presses the stage in whole working face extraction process.
(1) for transportation roadway, be 6m along empty coal pillar width, therefore this tunnel is all decided to be general hazardous area, 3m is greater than for the drop in this tunnel, be less than 20m scope before and after 10m tomography and be decided to be grave danger district, 20m ~ 50m scope is moderate risk district, and this tunnel will experience first weight (medium influence) in working face extraction process, single stope first " square " presses (seriously) and double face first " square " to press the impact of (seriously), by the overlaying influence analysis to multiple factor, can find out, before and after tomography, the grave danger district of 20m scope superposes with the general hazardous area of the wide coal column of 6m, stack result is grave danger district, the moderate risk district of 20m ~ 50m scope of tomography superposes with the general hazardous area of the wide coal column of 6m, result is moderate risk district, finally predict the outcome as 3 grave danger districts to the degree and zoning of transportation roadway, 2 moderate risk districts, all the other are general hazardous area.
(2) for track lane, before and after bifurcation of coal seam section, 10m is grave danger district, and front and back 10 ~ 20m is moderate risk district, before and after Roof rock feature change section, 50m is grave danger district, front and back 50 ~ 100m is general hazardous area, coal region of keeping on file is moderate risk district, this lane also will experience first weight (medium influence) in working face extraction process, single stope first " square " presses (seriously) and double face first " square " to press the impact of (seriously), by the overlaying influence analysis to multiple factor, can find out, before and after Roof rock feature change section, the grave danger district of 50m superposes with the moderate risk district in coal region of keeping on file, stack result is grave danger district, the general hazardous area of 50 ~ 100m and the moderate risk district of bifurcation of coal seam section before and after Roof rock feature change section, the grave danger district that double face first " square " is pressed superposes mutually, superposition section result is respectively medium and grave danger district, finally predict the outcome as 4 grave danger districts to the degree and zoning in track lane, 3 moderate risk districts, 2 general hazardous areas, all the other are slight hazardous area.
By to after above-mentioned analysis of Influential Factors, finally the result of degree and zoning prediction is carried out as shown in Figure 1 to this work plane.Predict the outcome according to degree and zoning, pre-release mode should be adopted before working face extraction to separate in advance for serious and moderate risk district endanger and strengthen erosion control management, for general and slight hazardous area, in exploitation process, take prophylactico-therapeutic measures targetedly according to monitoring result.For ahead work face bearing pressure district, because it is in dynamic change always, with the overlaying influence of working face extraction analysis and other factors, pre-release and danger releasing measures should be taked in time.
Table 1 multifactor addition method degree and zoning caluclate table
Claims (4)
1. a underground coal mine impulsion pressure degree and zoning Forecasting Methodology, it is characterized in that: composite fault, seam inclination changes, coal seam is corroded, close layer or varied in thickness region, roof and floor lithologic changes, the coal column that up-protective layer exploitation is left over, the overlaying influence of ahead work face bearing pressure factor, for the exploiting field through composite index law analysis with Hazards of Rock Burst, the risk degree of pressure bump in different location is decided to be 4 ranks, be respectively slight hazardous area, general hazardous area, moderate risk district and grave danger district, by analyzing the overlaying influence effect of multiple impulsion pressure regional effect factor, determine the different risk degree of pressure bumps that different exploitation location has, degree and zoning prediction is carried out to production zone, can predict the outcome according to degree and zoning, instruct the enforcement of erosion control measure,
A certainly be evaluated as the production zone with Hazards of Rock Burst for given, a kind of composite index law of degree and zoning prediction, comprises following step:
(1) analyze the distribution situation of regional influence factor, determine respective influence basin and degree;
(2) determine multiple factor overlaying influences in each location, comprehensively determine the risk degree of pressure bump in each location, namely carry out the degree and zoning prediction of risk degree of pressure bump; Different location is divided into slight hazardous area, general hazardous area, moderate risk district and grave danger district;
(3) degree and zoning is predicted the outcome demarcate on mining engineering plan, and identify by different legend or color;
(4) predict the outcome according to degree and zoning, take impulsion pressure prophylactico-therapeutic measures targetedly.
2. underground coal mine impulsion pressure degree and zoning Forecasting Methodology according to claim 1, is characterized in that: described regional effect factor comprises: (1) drop is greater than 3m, is less than the near Faults of 10m; (2) near the fold of seam inclination acute variation (being greater than 15 °); (3) coal seam is corroded, is closed layer or varied in thickness part; (4) roof and floor lithologic change location; (5) below the coal column that up-protective layer exploitation is left over; (6) near the drop tomography that is greater than 10m or the group of faults; (7) work plane advanced to goaf is when close to goaf; (8) " hilt " shape irregular face or multiple work plane open-off cut and stop adopting line and do not line up region; (9) tunnel adjacent intersection regions; (10) stay and establish width irrational gob side entry coal column district; (11) ahead work face bearing pressure district; (12) near first weighting position, old top; (13) work plane goaf " square " region; (14) to keep on file coal region; (15) digging disturbance region; These 15 factors have the regional effect rules to risk degree of pressure bump different separately respectively.
3. underground coal mine impulsion pressure degree and zoning Forecasting Methodology according to claim 1, it is characterized in that: described multiple factor overlaying influences, that multiple regional effect factor has overlaying influence to impulsion pressure danger, when the superposition of multiple " seriously " grade or " seriously " grade superpose with other grade influence factor, this location or place are finally decided to be " seriously " grade; When there being 1 " medium " grade to superpose with one or more " generally " grade influence factors, this location or place are finally decided to be " medium " grade; When having 2 and the superposition of above " medium " grade influence factor, this location or place are finally decided to be " seriously " grade; When having 2 and the superposition of above " generally " grade influence factor, this location or place are finally decided to be " generally " or " medium " grade.
4. underground coal mine impulsion pressure degree and zoning Forecasting Methodology according to claim 1, it is characterized in that: described takes impulsion pressure prophylactico-therapeutic measures targetedly, pre-release mode should be adopted before working face extraction to separate in advance for serious and moderate risk district endanger and strengthen erosion control management, for general and slight hazardous area, in exploitation process, take prophylactico-therapeutic measures targetedly according to monitoring result.
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| PCT/CN2014/074086 WO2014176952A1 (en) | 2013-04-28 | 2014-03-26 | Method for partitioning, grading and forecasting rock bursts in underground coal mine |
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| CN103256073B (en) * | 2013-04-28 | 2015-07-29 | 中国矿业大学 | Underground coal mine impact mine pressure partition grading prediction method |
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| CN104239691A (en) * | 2014-08-21 | 2014-12-24 | 徐州矿务集团有限公司 | Actual-measurement comprehensive evaluation method for impact risk |
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