CN112554953A - Method for judging impact risk of syncline shaft stope by window intervention method - Google Patents
Method for judging impact risk of syncline shaft stope by window intervention method Download PDFInfo
- Publication number
- CN112554953A CN112554953A CN202011510266.2A CN202011510266A CN112554953A CN 112554953 A CN112554953 A CN 112554953A CN 202011510266 A CN202011510266 A CN 202011510266A CN 112554953 A CN112554953 A CN 112554953A
- Authority
- CN
- China
- Prior art keywords
- stress
- displacement
- observing
- syncline
- stope
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000006073 displacement reaction Methods 0.000 claims abstract description 20
- 238000005065 mining Methods 0.000 claims abstract description 11
- 230000035772 mutation Effects 0.000 claims abstract description 7
- 238000005516 engineering process Methods 0.000 claims abstract description 6
- 239000011435 rock Substances 0.000 description 7
- 239000003245 coal Substances 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 3
- 238000009933 burial Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a method for judging impact risk of a syncline shaft stope by a window intervention method, which comprises the following steps: step one, observing and analyzing the ground stress: according to the concrete position of the stope and geological mining conditions, carrying out ground stress field observation, observing the area of the ground stress field, and carrying out on-site study and judgment on the damage trace of the ground stress to the roadway to serve as the basis of impact risk prediction; step two, a manual window intervention technology: for a mining field with a syncline shaft part, according to the observation result of a ground stress field, arranging observation drill holes along the vertical direction of a main stress direction, installing a pressure-bearing type stress meter on a vertical top-bottom plate in each drill hole, observing the change of stress, and converting the change into displacement; step three, judging impact risk by displacement mutation in the window: and continuously observing the displacement condition of the stress meter, and taking the displacement condition as an impact danger early warning when a plurality of borehole stress meters are subjected to displacement mutation.
Description
Technical Field
The invention belongs to the technical field of coal mining, and particularly relates to a method for judging impact risk of a syncline shaft stope by a window intervention method.
Background
Rock burst is one of the most serious disasters of coal mines and shows a growing trend. The geological conditions of deep mines in China are complex and changeable, factors of the deep mines are more decisive when the deep mines go to the deep mines, and factors influencing the rock burst comprise structure, burial depth, a top plate, coal bed hardness, mining factors and the like, wherein the rock burst caused by a syncline structure occupies a large proportion, and coupling damage is easy to occur. How to solve tectonic rock burst is a major technical problem faced by coal mines. Under the condition, the rock burst is difficult to achieve the degree of complete control by adopting the conventional measures of improving roadway layout, coal seam water injection, strong support, strong pressure relief of the coal seam, top breaking, bottom breaking and the like. As the mining depth increases and the complexity of geological conditions increases, it is difficult for conventional prediction to obtain quantitative information. Therefore, prediction and control of the impact ground pressure of the syncline shaft stope under the conditions of multiple structures, high stress and large burial depth are problems to be solved urgently.
At present, the prediction of rock burst danger under the condition is basically consistent with that of a common working face, and mainly comprises micro-shock, a drilling cutting method, electromagnetic radiation, stress online, mine pressure observation and the like. Until now, there has been no method for predicting impact risk in a targeted and specific manner for specific conditions of a syncline section stope. The conventional monitoring technology of the conventional method is difficult to quantitatively warn the impact danger of a mining field on an inclined shaft part and monitor the stress distribution and the energy release range caused by unreasonable ground stress and engineering layout. And a manual intervention method is required, and the shock sensitive direction is monitored aiming at the stress characteristic of the syncline shaft part, so that the dangerous precursor information of the rock burst is really monitored.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide an impact risk judgment method for observing coordination between a man-made window intervention technology and a ground stress azimuth aiming at the condition that the impact risk of a syncline shaft part stope is difficult to judge.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a method for judging impact risk of a syncline shaft stope by a window intervention method comprises the following steps:
step one, observing and analyzing the ground stress: according to the concrete position of the stope and geological mining conditions, carrying out ground stress field observation, observing the area of the ground stress field, and carrying out on-site study and judgment on the damage trace of the ground stress to the roadway to serve as the basis of impact risk prediction;
step two, a manual window intervention technology: for a mining field with a syncline shaft part, according to the observation result of a ground stress field, arranging observation drill holes along the vertical direction of a main stress direction, installing a pressure-bearing type stress meter on a vertical top-bottom plate in each drill hole, observing the change of stress, and converting the change into displacement;
step three, judging impact risk by displacement mutation in the window: and continuously observing the displacement condition of the stress meter, and taking the displacement condition as an impact danger early warning when a plurality of borehole stress meters are subjected to displacement mutation.
The invention has the positive effects that:
1. the method comprises the steps of acquiring the main direction of the ground stress by observing and analyzing the ground stress of a stope with a syncline shaft on site, and researching and judging an impact dangerous area by combining the layout condition of stope engineering;
2. adopting a manual window intervention technology, namely constructing a plurality of observation drill holes along the direction of the roadway in the direction vertical to the main stress direction in the roadway, and installing pressure-bearing stress meters in the drill holes;
3. by continuously observing the displacement change of the stressometers and combining dynamic display (microseism and the like), the real-time early warning of impact danger is carried out by the sudden change of the displacement of the stressometers.
Drawings
Fig. 1 is a schematic diagram of the results of ground stress monitoring, fig. 2 is a schematic diagram of the design of a borehole, and fig. 3 is a strain gauge displacement curve.
Detailed Description
The embodiment of the invention provides a method for judging impact risk of a syncline shaft stope by a window intervention method, which comprises the following steps:
firstly, determining an impact risk monitoring area according to data such as a stope specific mining environment and an impact ground pressure risk evaluation report and the like and by combining specific ground stress observation data, and referring to fig. 1;
secondly, constructing a plurality of observation drill holes along the trend of the roadway and in the vertical direction of the main stress, wherein the depth of each drill hole is generally 12-15m, and a pressure-bearing type stress meter is installed, wherein 1 is an observation drill hole, and 2 is a stress meter, which is shown in figure 2;
and thirdly, continuously observing the displacement change condition of the stress meter, and judging the impact danger degree according to the displacement mutation by combining the dynamic display condition, which is shown in figure 3.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. A method for judging impact risk of a syncline shaft stope by a window intervention method is characterized by comprising the following steps: the method comprises the following steps: step one, observing and analyzing the ground stress: according to the concrete position of the stope and geological mining conditions, carrying out ground stress field observation, observing the area of the ground stress field, and carrying out on-site study and judgment on the damage trace of the ground stress to the roadway to serve as the basis of impact risk prediction;
step two, a manual window intervention technology: for a mining field with a syncline shaft part, according to the observation result of a ground stress field, arranging observation drill holes along the vertical direction of a main stress direction, installing a pressure-bearing type stress meter on a vertical top-bottom plate in each drill hole, observing the change of stress, and converting the change into displacement;
step three, judging impact risk by displacement mutation in the window: and continuously observing the displacement condition of the stress meter, and taking the displacement condition as an impact danger early warning when a plurality of borehole stress meters are subjected to displacement mutation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011510266.2A CN112554953A (en) | 2020-12-18 | 2020-12-18 | Method for judging impact risk of syncline shaft stope by window intervention method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011510266.2A CN112554953A (en) | 2020-12-18 | 2020-12-18 | Method for judging impact risk of syncline shaft stope by window intervention method |
Publications (1)
Publication Number | Publication Date |
---|---|
CN112554953A true CN112554953A (en) | 2021-03-26 |
Family
ID=75031919
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202011510266.2A Pending CN112554953A (en) | 2020-12-18 | 2020-12-18 | Method for judging impact risk of syncline shaft stope by window intervention method |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN112554953A (en) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102383830A (en) * | 2011-09-30 | 2012-03-21 | 中煤科工集团重庆研究院 | Comprehensive outburst prevention method for outburst coal seam region |
CN103982137A (en) * | 2014-05-19 | 2014-08-13 | 中国矿业大学 | Design method for underground hydraulic fracturing drilled hole azimuth angle of coal mine |
CN105631102A (en) * | 2015-12-24 | 2016-06-01 | 河南理工大学 | Numerical simulation determination method of deep high-stress roadway drilling pressure relief parameter |
CN106096853A (en) * | 2016-06-21 | 2016-11-09 | 中国矿业大学 | A kind of coal roadway tunneling Hazards of Rock Burst Pre-Evaluation method |
CN106285782A (en) * | 2016-08-30 | 2017-01-04 | 中国矿业大学(北京) | Bump method for early warning under a kind of complicated geological Environmental effect and system |
CN106443784A (en) * | 2016-10-20 | 2017-02-22 | 山东科技大学 | Fault zone rock burst dangerousness monitoring method |
CN110307924A (en) * | 2019-06-21 | 2019-10-08 | 三峡大学 | A kind of device and method measuring stress field of the surrounding rock principal stress |
CN111767593A (en) * | 2020-05-21 | 2020-10-13 | 中国矿业大学 | Method for determining reasonable arrangement direction of underground roadway based on type of ground stress field |
-
2020
- 2020-12-18 CN CN202011510266.2A patent/CN112554953A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102383830A (en) * | 2011-09-30 | 2012-03-21 | 中煤科工集团重庆研究院 | Comprehensive outburst prevention method for outburst coal seam region |
CN103982137A (en) * | 2014-05-19 | 2014-08-13 | 中国矿业大学 | Design method for underground hydraulic fracturing drilled hole azimuth angle of coal mine |
CN105631102A (en) * | 2015-12-24 | 2016-06-01 | 河南理工大学 | Numerical simulation determination method of deep high-stress roadway drilling pressure relief parameter |
CN106096853A (en) * | 2016-06-21 | 2016-11-09 | 中国矿业大学 | A kind of coal roadway tunneling Hazards of Rock Burst Pre-Evaluation method |
CN106285782A (en) * | 2016-08-30 | 2017-01-04 | 中国矿业大学(北京) | Bump method for early warning under a kind of complicated geological Environmental effect and system |
CN106443784A (en) * | 2016-10-20 | 2017-02-22 | 山东科技大学 | Fault zone rock burst dangerousness monitoring method |
CN110307924A (en) * | 2019-06-21 | 2019-10-08 | 三峡大学 | A kind of device and method measuring stress field of the surrounding rock principal stress |
CN111767593A (en) * | 2020-05-21 | 2020-10-13 | 中国矿业大学 | Method for determining reasonable arrangement direction of underground roadway based on type of ground stress field |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN109611143B (en) | Roof hydraulic fracturing multi-parameter comprehensive monitoring system and fracturing effect judging method | |
CN209761499U (en) | Roof hydraulic fracturing multi-parameter comprehensive monitoring system | |
CN111270987B (en) | Method for accurately preventing and controlling rock burst in remote area under coal mine | |
CN103233777B (en) | A kind of roof safety ore pressure monitor method and device | |
Kuang et al. | The impact of key strata movement on ground pressure behaviour in the Datong coalfield | |
CN109653800B (en) | Composite power disaster monitoring and early warning system and method for deep water-rich overburden thick coal seam mining | |
CN112780340B (en) | Method for preventing rock burst in advance in underground coal mine area | |
CN111859712B (en) | Ground advance pre-control method for rock burst of coal mine | |
CN104454010A (en) | Integrated monitoring and early warning system and early warning method for dynamic condition of deep well drivage construction | |
CN104653226A (en) | Stress-gradient-based method for dividing coal impact ground pressure danger area | |
CN110792419B (en) | Coal mine rock burst well up-down advance pre-control method | |
CN105422088A (en) | Coal mine roadway geological parameter on-line monitoring system | |
CN115788435A (en) | System and method for preventing rock burst in coal mine from up and down in three-dimensional manner | |
CN114109508A (en) | Rock burst monitoring method based on energy system analysis and application | |
CN106494460B (en) | The high ferro subgrade stability method for early warning in Strong tremor region | |
CN112377256B (en) | Impact danger large-diameter drilling hole inspection method based on microseism monitoring | |
CN110988502B (en) | Station arrangement method for monitoring electric field intensity change of mine coal rock fracture | |
CN112554953A (en) | Method for judging impact risk of syncline shaft stope by window intervention method | |
CN117167011A (en) | Series-parallel connection full-length pressure relief hole distribution method for broken surrounding rock based on long horizontal holes of top plate | |
CN113803067B (en) | Colliery local rock burst prevention and cure device | |
CN115288607A (en) | Large-diameter drilling pressure relief method for high horizontal stress area of regional structure | |
CN113958367A (en) | Underground mine soft rock roadway ground pressure safety early warning monitoring method | |
CN104763424A (en) | Gob-side entry driving reasonable position determination method | |
CN112483178A (en) | Method for judging impact risk of deep syncline shaft part stope by large window destruction method | |
CN100412315C (en) | Method for preventing well wall from crack by dynamic earth layer reinjecting water |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210326 |