CN106884677A - Tight roof super high seam exploits strong ore deposit pressure prediction pre-control method - Google Patents
Tight roof super high seam exploits strong ore deposit pressure prediction pre-control method Download PDFInfo
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- CN106884677A CN106884677A CN201710229110.9A CN201710229110A CN106884677A CN 106884677 A CN106884677 A CN 106884677A CN 201710229110 A CN201710229110 A CN 201710229110A CN 106884677 A CN106884677 A CN 106884677A
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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
Abstract
The present invention relates to coal mining ore deposit pressure prediction pre-control method, specially tight roof super high seam exploits strong ore deposit pressure prediction pre-control method, solves the problems, such as that lacking tight roof super high seam at present exploits strong ore deposit pressure prediction pre-control method, and step is：First, functional relation is set up：f (L)、f (M)、f (D)、f (H)、f (L p )、f (H p )；2nd, regression model is set upσ=a*f (L)+b*f (M)+c*f (D)+e* f (H)+g*f (L p )+h*f (H p )+k；3rd, functional relation result of calculation is substituted into regression model to calculatea、b、c、e、g、h、kValue, determine regression model expression formula；4th, appoint and take a working face, determine L,M、D、H、L p 、H p , substitute into calculating in regression modelσ；Five and primitive stressσ 0Contrast, prediction ore deposit pressure manifests grade；6th, correspondence supporting control method is taken.Advantage：1st, the principal element of influence ore deposit pressure is covered；2nd, forecasting accuracy is high；3rd, forecast model is flexibly practical；4th, the safety and high efficiency of working face is ensured.
Description
Technical field
The present invention relates to coal mining ore deposit pressure prediction pre-control method, specially tight roof super high seam exploits strong ore deposit pressure in advance
Survey pre-control method.
Background technology
After coal bed underground exploitation, the disrumpent feelings unstable motion of overlying rock will certainly be triggered, so as to cause work to a certain degree
The ore deposit pressure in face manifests.For thin and medium seam exploitation, extraction space is small because of working face mining thickness less, and overlying strata migration collapses
The unstable sphere that falls is smaller, and Face Ground Pressure Behavior degree is not strong.And China's super high seam rich reserves, it is that China's Underground well is high
Is produced from efficient main body coal seam, the exploitation for super high seam at present once adopts full-seam extraction using high working face mostly, and this just makes
Into after super high seam exploitation, extraction space is big, and overlying strata migration area is wide, and overlying rock is disrumpent feelings, unstability, stress distribution complicated, especially
Under the conditions of overlying strata are tight roof, because the breaking span of tight roof is big, disrumpent feelings rule is increasingly complex, so as to exacerbate heavily fortified point for it
The ore deposit pressure for resisting working face under plate super high seam mining conditions stubbornly manifests degree, and the strong ore deposit pressure of stope and CONTROL OF STRATA MOVEMENT are brought necessarily
Challenge.Meanwhile, because underground multiple seam preservation phenomenon is commonplace, coal column is left in goaf preservation after upper seam mining
When, because leaving generation stress concentration phenomenon at coal column, the ore deposit pressure that can also aggravate lower tax seam mining working face manifests degree.Thus
The ore deposit pressures such as caused force piece is killed, roadway damage manifest strongly, especially leave coal column when possessing goaf on working face
When, Face Ground Pressure Behavior is extremely violent, has a strong impact on the safety in production of working face.
The strong ore deposit pressure Displaying Mechanism and feature and bump of working face have essential distinction, its core be exploitation disturbance,
Caused by unstability that rock stratum is disrumpent feelings.Method due to lacking ore deposit pressure prediction at present, therefore work during the tight roof super high seam exploitation of underground
The supporting for making face and tunnel has certain blindness.According to the supporting of inferior grade, then can cause underground mining safety coefficient
Reduce；If using high-grade safety support without exception, production cost can be caused to greatly improve, and influence manufacturing schedule.
As can be seen here, research one kind can be exploited before strong ore deposit pressure manifests in tight roof super high seam and is predicted, from
And working face control measure accordingly adjust as manufacturing schedule are made during Instructing manufacture, reasonable arrangement supporting grade, it is ensured that work
The tight roof super high seam of the safe and efficient production in face is exploited strong ore deposit pressure prediction pre-control method and is extremely necessary.
The content of the invention
The present invention solves the problems, such as that lacking tight roof super high seam at present exploits strong ore deposit pressure prediction pre-control method, there is provided one
Plant tight roof super high seam and exploit strong ore deposit pressure prediction pre-control method.
The present invention is realized by following operating procedure：Tight roof super high seam the mining pressure forecasting and control in advance method,
Including following operating procedure：
First, numerical simulator is set up with FLAC simulation softwards, and obtains being enclosed at working face based on the model calculation fitting
Rock stressσAdopted with face length L, working face coal seam respectively on the most thick competent bed thickness D of thick M, working face overlying, working face
Cover most thick competent bed and leave coal pillar width L apart from H, overlying away from working facep, overlying leave coal column away from working face apart from HpLetter
Number relational expressionf(L)、f(M)、f(D)、f(H)、f(Lp)、f(Hp)；
2nd, surrouding rock stress at the working face based on step one gainedσFunctional relationσ=f (L)、σ=f (M)、σ=f (D)、σ =f (H)、σ=f (L p )、σ=f (H p ), set up surrouding rock stress at working face with SPSS simulation softwardsσWithL、M、D、H、L p 、H p
Related regression model:σ=a*f (L)+b*f (M)+c*f (D)+e* f (H)+g*f (L p )+h*f (H p )+K,In formulaa、b、 c、e、g、h、kIt is constant；
3rd, using SPSS simulation softwards, the result of calculation of the numerical simulator in step one is substituted into the recurrence mould of step 2
Calculated in type, obtaineda、b、c、e、g、h、kValue, so that it is determined that surrouding rock stress at working faceσWithL、M、D、H、L p 、H p 's
Regression model expression formula；
4th, appoint and take a tight roof super high seam exploitation working face, determine face lengthL, working face coal seam adopt thicknessM, work
Make the most thick competent bed thickness of face overlyingD, the most thick competent bed of working face overlying is away from working face distanceH、It is wide that overlying leaves coal column
DegreeL p , overlying leave coal column away from working face distanceH p , surrouding rock stress at working face is calculated in substitution regression modelσ；If work
Face overlying does not exist leaves coal column, then in regression modelg、hValue is 0；
5th, surrouding rock stress at the working face that will be calculatedσWith primitive stress at working faceσ 0Contrasted, whenσ=（1~1.5）σ 0, then ore deposit pressure manifest grade be it is general, whenσ=（1.5~2.0）σ 0, then ore deposit pressure manifest grade for stronger, whenσ=（2.0~3.0）σ 0, then ore deposit pressure manifest grade be it is strong, whenσ≥3.0 σ 0, then it is extremely strong strong that ore deposit pressure manifests grade；
6th, prediction ore deposit pressure manifest grade for it is general when, by using hydraulic single prop supporting, anchor shaft anchor cable in the range of tunnel
The conventional methods such as supporting carry out supporting to country rock, prediction ore deposit pressure manifest grade for it is stronger when, arrange high-strength in the range of tunnel
Degree and the hydraulic single prop of density, anchor shaft anchor cable carry out strengthening supporting, prediction ore deposit pressure manifest grade for it is strong when, by underground
Pressure break reduction is carried out to coal seam overlying low level competent bed using the method for hydraulic fracturing, while being arranged in the range of tunnel high-strength
Degree and the hydraulic single prop of density, anchor shaft anchor cable carry out strengthening supporting, prediction ore deposit pressure manifest grade for it is extremely strong strong when, by
Underground carries out pressure break reduction using the method for hydraulic fracturing to coal seam overlying low level competent bed, while in well upper ground surface using ground
Face hydraulic fracturing carries out pressure break reduction to high-order competent bed, and the hydraulic monomer of high intensity and density is arranged in the range of tunnel
Pillar, anchor shaft anchor cable carry out strengthening supporting；When in overlying strata because preservation leaves coal column and caused by Face Ground Pressure Behavior is strong or pole
When strong, while carrying out pressure break to leaving the upper and lower competent bed of coal column by the way of hydrofracturing.
Surrouding rock stress at working face is obtained calculating to analyze and be fitted with FLAC simulation softwardsσRespectively with face length
L, working face coal seam adopt the most thick competent bed thickness D of thick M, working face overlying, the most thick competent bed of working face overlying away from working face
Coal pillar width L is left apart from H, overlyingp, overlying leave coal column away from working face apart from HpFunctional relationf(L)、f(M)、f(D)、f(H)、f(Lp)、f(Hp) when, L, M, D, H, L are set respectivelyp、HpIt is variable, remaining parameter is constant, and one change of setting every time
Amount, the value number of variable is no less than 4.
The present invention has advantages below：1st, the influence strong ore deposit pressure of working face under tight roof super high seam mining conditions is covered
The principal element for manifesting, it is ensured that forecast model it is comprehensive；2nd, it is primarily based on the fitting of Numerical modelling data and obtains each shadow
The factor of sound and the functional relation of working face surrouding rock stress, then set up regression model based on functional relation, can effectively carry
The regression coefficient of regression model high, it is ensured that the accuracy of forecast model；3rd, the numerical simulator set up can be according to be predicted
The change of the geological conditions of working face and change, it is ensured that the flexibility of forecast model and practicality；4th, manifested according to strong ore deposit pressure
Grade forecast result, in advance using the measure of the strong ore deposit pressure life of the pre-controls such as roadway surrounding rock strengthening supporting, the reduction of overlying competent bed,
The safety and high efficiency of working face is advantageously ensured that, is had a extensive future.
Brief description of the drawings
Fig. 1 is operating process schematic diagram of the present invention.
Specific embodiment
Tight roof super high seam the mining pressure forecasting and control in advance method, including following operating procedure：
First, 1）, four numerical simulators are set up with FLAC simulation softwards, take face lengthLRespectivelyL 1 、L 2 、L 3 、L 4 ,
Stationary face adopts thicknessM 3 、The most thick competent bed thickness of working face overlying isD 3 、The most thick competent bed of working face overlying is away from work
Identity distance from forH 3 、Overlying leaves coal pillar widthL p3 、Overlying leaves coal columnH p3 , simulate and be calculated difference
Surrouding rock stress at working face during face lengthσ, surrouding rock stress at working face is obtained based on analogue data fittingσIt is long with working face
DegreeLRelational expression：σ=f (L)；
2）, 4 numerical simulators are set up with FLAC simulation softwards, take working face coal seam and adopt thicknessMRespectivelyM 1 、M 2 、M 3 、M 4 ,
Stationary face length isL 3 、The most thick competent bed thickness of working face overlying isD 3 、The most thick competent bed of working face overlying is away from work
Identity distance from forH 3 、Overlying leaves coal pillar widthL p3 、Overlying leaves coal columnH p3 , simulate and be calculated difference
Surrouding rock stress at working face when thickness is adopted in working face coal seamσ, surrouding rock stress at working face is obtained based on analogue data fittingσWith work
Adopt thickness in face coal seamMRelational expression：σ=f (M)；
3）, 4 numerical simulators are set up with FLAC simulation softwards, take the most thick competent bed thickness of working face overlyingDRespectively
ForD 1 、D 2 、D 3 、D 4 , stationary face length isL 3 、Working face adopts thicknessM 3 、The most thick competent bed of working face overlying is away from working face
Distance isH 3 、Overlying leaves coal pillar widthL p3 、Overlying leaves coal columnH p3 , simulate and be calculated different works
Make during face overlying most thick competent bed thickness surrouding rock stress at working faceσ, country rock at working face is obtained based on analogue data fitting
StressσWith the most thick competent bed thickness of working face overlyingDRelational expression：σ=f (D)；
4）, 4 numerical simulators are set up with FLAC simulation softwards, take the most thick competent bed of working face overlying away from working face away from
FromHRespectivelyH 1 、H 2 、H 3 、H 4 , stationary face length isL 3 、Working face adopts thicknessM 3 、The most thick competent bed of working face overlying is thick
Spend and beD 3 、Overlying leaves coal pillar widthL p3 、Overlying leaves coal columnH p3 , simulate and be calculated different operating
The most thick competent bed of face overlying away from working face apart from when working face at surrouding rock stressσ, working face is obtained based on analogue data fitting
Place's surrouding rock stressσWith the most thick competent bed of working face overlying away from working face distanceHRelational expression：σ=f (H)；
5）, 4 numerical simulators are set up with FLAC simulation softwards, take overlying and leave coal pillar widthL p RespectivelyL p1 、L p2 、 L p3 、L p4 , stationary face length isL 3 、Working face adopts thicknessM 3 、The most thick competent bed thickness of working face overlying isD 3 、Working face
The most thick competent bed of overlying is away from working face distanceH 3 、Overlying leaves coal columnH p3 , simulate and be calculated not
Surrouding rock stress at working face when leaving coal pillar width with overlyingσ, surrouding rock stress at working face is obtained based on analogue data fittingσWith
Overlying leaves coal pillar widthL p Relational expression：σ=f (L p )；
6）, 4 numerical simulators are set up with FLAC simulation softwards, take overlying and leave coal column away from working face distanceH p RespectivelyH p1 、H p2 、H p3 、H p4 , stationary face length isL 3 、Working face adopts thicknessM 3 、The most thick competent bed thickness of working face overlying isD 3 、
The most thick competent bed of working face overlying is away from working face distanceH 3 、Overlying leaves coal pillar widthL p3 , simulate and be calculated difference
Overlying leave coal column away from working face apart from when working face at surrouding rock stressσ, country rock at working face is obtained based on analogue data fitting
StressσCoal column is left away from working face distance with overlyingH p Relational expression：σ=f (H p )；
2nd, surrouding rock stress at the working face based on step one gainedσFunctional relationσ=f (L)、σ=f (M)、σ=f (D)、σ =f (H)、σ=f (L p )、σ=f (H p ), set up surrouding rock stress at working face with SPSS simulation softwardsσWithL、M、D、H、L p 、H p
Related regression model:σ=a*f (L)+b*f (M)+c*f (D)+e* f (H)+g*f (L p )+h*f (H p )+K,In formulaa、b、 c、e、g、h、kIt is constant；
3rd, using SPSS simulation softwards, the result of calculation of 24 numerical simulators in step one is substituted into returning for step 2
Return in model and calculated, obtaina、b、c、e、g、h、kValue, so that it is determined that surrouding rock stress at working faceσWithL、M、D、H、L p 、 H p Regression model expression formula；
4th, appoint and take a tight roof super high seam exploitation working face, determine face lengthL, working face coal seam adopt thicknessM, work
Make the most thick competent bed thickness of face overlyingD, the most thick competent bed of working face overlying is away from working face distanceH、It is wide that overlying leaves coal column
DegreeL p , overlying leave coal column away from working face distanceH p , surrouding rock stress at working face is calculated in substitution regression modelσ；If work
Face overlying does not exist leaves coal column, then in regression modelg、hValue is 0；
5th, surrouding rock stress at the working face that will be calculatedσWith primitive stress at working faceσ 0Contrasted, whenσ=（1~1.5）σ 0, then ore deposit pressure manifest grade be it is general, whenσ=（1.5~2.0）σ 0, then ore deposit pressure manifest grade for stronger, whenσ=（2.0~3.0）σ 0, then ore deposit pressure manifest grade be it is strong, whenσ≥3.0 σ 0, then it is extremely strong strong that ore deposit pressure manifests grade；
6th, prediction ore deposit pressure manifest grade for it is general when, by using hydraulic single prop supporting, anchor shaft anchor cable in the range of tunnel
The conventional methods such as supporting carry out supporting to country rock, prediction ore deposit pressure manifest grade for it is stronger when, arrange high-strength in the range of tunnel
Degree and the hydraulic single prop of density, anchor shaft anchor cable carry out strengthening supporting, prediction ore deposit pressure manifest grade for it is strong when, by underground
Pressure break reduction is carried out to coal seam overlying low level competent bed using the method for hydraulic fracturing, while being arranged in the range of tunnel high-strength
Degree and the hydraulic single prop of density, anchor shaft anchor cable carry out strengthening supporting, prediction ore deposit pressure manifest grade for it is extremely strong strong when, by
Underground carries out pressure break reduction using the method for hydraulic fracturing to coal seam overlying low level competent bed, while in well upper ground surface using ground
Face hydraulic fracturing carries out pressure break reduction to high-order competent bed, and the hydraulic monomer of high intensity and density is arranged in the range of tunnel
Pillar, anchor shaft anchor cable carry out strengthening supporting；When in overlying strata because preservation leaves coal column and caused by Face Ground Pressure Behavior is strong or pole
When strong, while carrying out pressure break to leaving the upper and lower competent bed of coal column by the way of hydrofracturing.
Claims (2)
1. a kind of tight roof super high seam the mining pressure forecasting and control in advance method, it is characterised in that：Including following operating procedure：
First, numerical simulator is set up with FLAC simulation softwards, and obtains being enclosed at working face based on the model calculation fitting
Rock stressσAdopted with face length L, working face coal seam respectively on the most thick competent bed thickness D of thick M, working face overlying, working face
Cover most thick competent bed and leave coal pillar width L apart from H, overlying away from working facep, overlying leave coal column away from working face apart from HpLetter
Number relational expressionf(L)、f(M)、f(D)、f(H)、f(Lp)、f(Hp)；
2nd, surrouding rock stress at the working face based on step one gainedσFunctional relationσ=f (L)、σ=f (M)、σ=f (D)、σ =f (H)、σ=f (L p )、σ=f (H p ), set up surrouding rock stress at working face with SPSS simulation softwardsσWithL、M、D、H、L p 、H p
Related regression model:σ=a*f (L)+b*f (M)+c*f (D)+e* f (H)+g*f (L p )+h*f (H p )+K,In formulaa、b、 c、e、g、h、kIt is constant；
3rd, using SPSS simulation softwards, the result of calculation of the numerical simulator in step one is substituted into the recurrence mould of step 2
Calculated in type, obtaineda、b、c、e、g、h、kValue, so that it is determined that surrouding rock stress at working faceσWithL、M、D、H、L p 、H p 's
Regression model expression formula；
4th, appoint and take a tight roof super high seam exploitation working face, determine face lengthL, working face coal seam adopt thicknessM, work
Make the most thick competent bed thickness of face overlyingD, the most thick competent bed of working face overlying is away from working face distanceH、It is wide that overlying leaves coal column
DegreeL p , overlying leave coal column away from working face distanceH p , surrouding rock stress at working face is calculated in substitution regression modelσ；If work
Face overlying does not exist leaves coal column, then in regression modelg、hValue is 0；
5th, surrouding rock stress at the working face that will be calculatedσWith primitive stress at working faceσ 0Contrasted, whenσ=（1~1.5）σ 0, then ore deposit pressure manifest grade be it is general, whenσ=（1.5~2.0）σ 0, then ore deposit pressure manifest grade for stronger, whenσ=（2.0~3.0）σ 0, then ore deposit pressure manifest grade be it is strong, whenσ≥3.0 σ 0, then it is extremely strong strong that ore deposit pressure manifests grade；
6th, prediction ore deposit pressure manifest grade for it is general when, by using hydraulic single prop supporting, anchor shaft anchor cable in the range of tunnel
The conventional methods such as supporting carry out supporting to country rock, prediction ore deposit pressure manifest grade for it is stronger when, arrange high-strength in the range of tunnel
Degree and the hydraulic single prop of density, anchor shaft anchor cable carry out strengthening supporting, prediction ore deposit pressure manifest grade for it is strong when, by underground
Pressure break reduction is carried out to coal seam overlying low level competent bed using the method for hydraulic fracturing, while being arranged in the range of tunnel high-strength
Degree and the hydraulic single prop of density, anchor shaft anchor cable carry out strengthening supporting, prediction ore deposit pressure manifest grade for it is extremely strong strong when, by
Underground carries out pressure break reduction using the method for hydraulic fracturing to coal seam overlying low level competent bed, while in well upper ground surface using ground
Face hydraulic fracturing carries out pressure break reduction to high-order competent bed, and the hydraulic monomer of high intensity and density is arranged in the range of tunnel
Pillar, anchor shaft anchor cable carry out strengthening supporting；When in overlying strata because preservation leaves coal column and caused by Face Ground Pressure Behavior is strong or pole
When strong, while carrying out pressure break to leaving the upper and lower competent bed of coal column by the way of hydrofracturing.
2. tight roof super high seam the mining pressure forecasting and control in advance method according to claim 1, it is characterised in that：It is described
Step one is calculated to analyze and be fitted and obtains surrouding rock stress at working face in utilization FLAC simulation softwardsσDifference L, M, D, H, Lp、Hp's
Functional relationf(L)、f(M)、f(D)、f(H)、f(Lp)、f(Hp) when, L, M, D, H, L are set respectivelyp、HpIt is variable, remaining ginseng
Number is constant, and one variable of setting every time, and the value number of variable is no less than 4.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107942380A (en) * | 2017-10-23 | 2018-04-20 | 太原理工大学 | A kind of numerical simulation method for considering caving zone goaf |
| CN108398333A (en) * | 2018-04-12 | 2018-08-14 | 河南理工大学 | The prediction technique of adjacent air space coal roadway rock sound load is adopted under a kind of tight roof |
| CN109146142A (en) * | 2018-07-25 | 2019-01-04 | 中国矿业大学 | A kind of prediction technique of stope drift active workings mine pressure impression data |
| CN109798149A (en) * | 2019-01-28 | 2019-05-24 | 辽宁工程技术大学 | A kind of tight roof high seam stope ground pressure strength grade predicting method |
| CN109855966A (en) * | 2019-01-23 | 2019-06-07 | 太原理工大学 | Coal mine ground pressure break tight roof layer position selection method |
| CN109886550A (en) * | 2019-01-23 | 2019-06-14 | 太原理工大学 | Coal mine ground pressure break tight roof controls strong mine and presses effect integrated evaluating method |
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| CN111027687A (en) * | 2019-12-29 | 2020-04-17 | 鄂尔多斯市伊化矿业资源有限责任公司 | Method and system for predicting and treating mine pressure during stoping period of coal mine working face |
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| CN107942380A (en) * | 2017-10-23 | 2018-04-20 | 太原理工大学 | A kind of numerical simulation method for considering caving zone goaf |
| CN108398333A (en) * | 2018-04-12 | 2018-08-14 | 河南理工大学 | The prediction technique of adjacent air space coal roadway rock sound load is adopted under a kind of tight roof |
| CN109146142A (en) * | 2018-07-25 | 2019-01-04 | 中国矿业大学 | A kind of prediction technique of stope drift active workings mine pressure impression data |
| WO2020019998A1 (en) * | 2018-07-25 | 2020-01-30 | 中国矿业大学 | Method for predicting mine strata pressure behavior data of stoping tunnel |
| CN109146142B (en) * | 2018-07-25 | 2020-08-11 | 中国矿业大学 | Prediction method of stoping roadway mine pressure display data |
| CN109886550B (en) * | 2019-01-23 | 2023-05-12 | 太原理工大学 | Comprehensive evaluation method for controlling strong mine fracturing effect of coal mine ground fracturing hard top plate |
| CN109855966A (en) * | 2019-01-23 | 2019-06-07 | 太原理工大学 | Coal mine ground pressure break tight roof layer position selection method |
| CN109886550A (en) * | 2019-01-23 | 2019-06-14 | 太原理工大学 | Coal mine ground pressure break tight roof controls strong mine and presses effect integrated evaluating method |
| CN109855966B (en) * | 2019-01-23 | 2021-04-13 | 太原理工大学 | Method for selecting coal mine ground fracturing hard roof layer position |
| CN109918715A (en) * | 2019-01-24 | 2019-06-21 | 太原理工大学 | A kind of coal mine ground vertical well pressure break tight roof position choosing method |
| CN109798149B (en) * | 2019-01-28 | 2020-06-09 | 辽宁工程技术大学 | Method for predicting inflow intensity of mining field of thick coal seam with hard roof in grading manner |
| CN109798149A (en) * | 2019-01-28 | 2019-05-24 | 辽宁工程技术大学 | A kind of tight roof high seam stope ground pressure strength grade predicting method |
| CN111103187A (en) * | 2019-12-04 | 2020-05-05 | 太原理工大学 | Method for predicting breaking impact strength of key layers at different layers |
| CN111103187B (en) * | 2019-12-04 | 2022-04-19 | 太原理工大学 | Method for predicting breaking impact strength of key layers at different layers |
| CN111027687A (en) * | 2019-12-29 | 2020-04-17 | 鄂尔多斯市伊化矿业资源有限责任公司 | Method and system for predicting and treating mine pressure during stoping period of coal mine working face |
| CN111598355A (en) * | 2020-05-29 | 2020-08-28 | 煤炭科学技术研究院有限公司 | Multi-layer hard rock stratum pressure grading prediction method |
| CN111598355B (en) * | 2020-05-29 | 2023-11-21 | 煤炭科学技术研究院有限公司 | Hierarchical prediction method for ore pressure of multi-layer hard rock stratum |
| CN113338931A (en) * | 2021-06-08 | 2021-09-03 | 太原理工大学 | Method for controlling strong mine pressure of stope by ground pre-splitting high-position inclined coal pillar structure |
| CN113847083A (en) * | 2021-10-28 | 2021-12-28 | 重庆大学 | Rock burst control method for high-position huge-thickness hard top plate area |
| CN113847083B (en) * | 2021-10-28 | 2024-03-01 | 重庆大学 | Control method for rock burst of high-level huge-thickness hard top plate area |
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