CN112483178A - Method for judging impact risk of deep syncline shaft part stope by large window destruction method - Google Patents
Method for judging impact risk of deep syncline shaft part stope by large window destruction method Download PDFInfo
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- CN112483178A CN112483178A CN202011504918.1A CN202011504918A CN112483178A CN 112483178 A CN112483178 A CN 112483178A CN 202011504918 A CN202011504918 A CN 202011504918A CN 112483178 A CN112483178 A CN 112483178A
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- ground stress
- impact risk
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000006378 damage Effects 0.000 title claims abstract description 13
- 238000005065 mining Methods 0.000 claims abstract description 10
- 239000002023 wood Substances 0.000 claims abstract description 9
- 238000005516 engineering process Methods 0.000 claims abstract description 5
- 238000006073 displacement reaction Methods 0.000 claims abstract description 3
- 239000011435 rock Substances 0.000 description 9
- 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
- 238000010276 construction Methods 0.000 description 1
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/02—Non-telescopic props
Abstract
The invention discloses a method for judging impact risk of a deep syncline shaft part stope by a large window destruction method, which comprises the following steps: step one, observing and analyzing the ground stress: observing the ground stress field according to the specific position of the stope, geological mining conditions and mining background, and researching and judging the damage trace of the ground stress to the roadway on site in the area where the ground stress field has been observed to serve as the basis of impact risk prediction; step two, artificial large window intervention technology: aiming at a deep syncline shaft part stope, arranging an observation tunnel along the vertical direction of a main stress direction according to the observation result of a ground stress field, erecting a wood pillar with a weak section on a vertical top bottom plate in the tunnel, and mounting an angle instrument on the wood pillar; step three, judging impact risk by sudden change of displacement (angle) in the window: and continuously observing the angle change condition of the goniometer, and taking the situation as an impact risk early warning when a plurality of goniometers suddenly change angles.
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 deep syncline shaft part stope by a large window destruction method.
Background
Rock burst is one of the most serious disasters of coal mines in China. The geological conditions of deep mines in China are complex and changeable, and the possibility of generating rock burst is continuously increased. Factors influencing rock burst include structure, burial depth, roof, coal bed hardness, mining factors and the like, wherein rock burst caused by a syncline structure, particularly a deep syncline shaft part area, is particularly serious, and is easy to generate coupling accidents with roof movement. How to solve deep 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. With the increasing mining depth and the complexity of stress distribution of the syncline shaft part, effective quantitative information is difficult to obtain by the conventional prediction. Therefore, prediction and control of deep syncline shaft stope rock burst under the conditions of multi-structure, high stress and large burial depth are important 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. Heretofore, there has been no method for predicting the impact risk in a targeted and specific manner for specific conditions in a deep directional inclined shaft section stope. The conventional monitoring technology of the conventional method is difficult to quantitatively warn the impact danger of a deep inclined shaft part stope, and is difficult to monitor the stress distribution and the energy release range which are unreasonably caused between the ground stress and the engineering layout for a long time. The method needs to be carried out by manual strong destruction and large-space intervention, manually monitors the tunnel of the construction window aiming at the stress display characteristics of the deep inclined shaft part, and monitors the danger of rock burst in a large-scale and large-scale manner for a long time.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide an impact danger judgment method combining artificial large window damage and mine pressure observation aiming at the situation that the impact danger of a deep 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 deep syncline shaft part stope by a large window destruction method comprises the following steps:
step one, observing and analyzing the ground stress: observing the ground stress field according to the specific position of the stope, geological mining conditions and mining background, and researching and judging the damage trace of the ground stress to the roadway on site in the area where the ground stress field has been observed to serve as the basis of impact risk prediction;
step two, artificial large window intervention technology: aiming at a deep syncline shaft part stope, arranging an observation tunnel along the vertical direction of a main stress direction according to the observation result of a ground stress field, erecting a wood pillar with a weak section on a vertical top bottom plate in the tunnel, and mounting an angle instrument on the wood pillar;
step three, judging impact risk by sudden change of displacement (angle) in the window: and continuously observing the angle change condition of the goniometer, and taking the situation as an impact risk early warning when a plurality of goniometers suddenly change angles.
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 deep inclined shaft part on site, and researching and judging an impact dangerous area by combining the layout condition of stope engineering;
2. adopting an artificial large-window intervention technology, namely constructing a plurality of observation tunnels in the direction of the tunnel along the direction vertical to the main stress direction in the tunnel, and erecting wood pillars for installing an angle gauge in the tunnel;
3. by continuously observing the change of the angle meters and combining with dynamic display (microseism and the like), the real-time early warning of the impact danger is carried out by sudden change of the angles of the angle meters.
Drawings
FIG. 1 is a diagram showing the results of ground stress monitoring, FIG. 2 is a diagram showing a window design, and FIG. 3 is an angle curve.
Detailed Description
The embodiment of the invention provides a method for judging impact risk of a deep syncline shaft part stope by a large window destruction 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 tunnels along the direction of the tunnels and according to the vertical direction of the main stress, wherein the length of the tunnels is generally 18-20m, installing wood pillars with observation performance, 1 is an observation tunnel, and 2 is an observation wood pillar, and the figure is 2;
and thirdly, continuously observing the angle change condition of the angle instrument, judging the impact danger degree according to the angle sudden change by combining the power display condition, wherein 3 is the angle instrument, 4 is a damage groove (weak surface), and the figure is 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 deep syncline shaft part stope by a large window destruction method is characterized by comprising the following steps: the method comprises the following steps:
step one, observing and analyzing the ground stress: observing the ground stress field according to the specific position of the stope, geological mining conditions and mining background, and researching and judging the damage trace of the ground stress to the roadway on site in the area where the ground stress field has been observed to serve as the basis of impact risk prediction;
step two, artificial large window intervention technology: aiming at a deep syncline shaft part stope, arranging an observation tunnel along the vertical direction of a main stress direction according to the observation result of a ground stress field, erecting a wood pillar with a weak section on a vertical top bottom plate in the tunnel, and mounting an angle instrument on the wood pillar;
step three, judging impact risk by sudden change of displacement (angle) in the window: and continuously observing the angle change condition of the goniometer, and taking the situation as an impact risk early warning when a plurality of goniometers suddenly change angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011504918.1A CN112483178A (en) | 2020-12-18 | 2020-12-18 | Method for judging impact risk of deep syncline shaft part stope by large window destruction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011504918.1A CN112483178A (en) | 2020-12-18 | 2020-12-18 | Method for judging impact risk of deep syncline shaft part stope by large window destruction method |
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| Publication Number | Publication Date |
|---|---|
| CN112483178A true CN112483178A (en) | 2021-03-12 |
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| CN202011504918.1A Pending CN112483178A (en) | 2020-12-18 | 2020-12-18 | Method for judging impact risk of deep syncline shaft part stope by large window destruction method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202041167U (en) * | 2011-01-27 | 2011-11-16 | 中国科学院武汉岩土力学研究所 | Three-way deformation measuring device for surrounding rock in drilling hole |
| CN102587983A (en) * | 2012-01-12 | 2012-07-18 | 山东科技大学 | Comprehensive early-warning observation method for coal mine rock burst |
| CN104632229A (en) * | 2014-12-29 | 2015-05-20 | 中国矿业大学 | Method for optimizing stress field of roadway area based on main stress differences |
| 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 |
| CN106443784A (en) * | 2016-10-20 | 2017-02-22 | 山东科技大学 | Fault zone rock burst dangerousness monitoring method |
| CN111460666A (en) * | 2020-04-02 | 2020-07-28 | 辽宁工程技术大学 | Rock burst danger prediction method for typical rock burst mine |
| CN111911209A (en) * | 2020-08-17 | 2020-11-10 | 河北工程大学 | Accurate targeted anchor grouting control method suitable for deep soft rock roadway |
-
2020
- 2020-12-18 CN CN202011504918.1A patent/CN112483178A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202041167U (en) * | 2011-01-27 | 2011-11-16 | 中国科学院武汉岩土力学研究所 | Three-way deformation measuring device for surrounding rock in drilling hole |
| CN102587983A (en) * | 2012-01-12 | 2012-07-18 | 山东科技大学 | Comprehensive early-warning observation method for coal mine rock burst |
| CN104632229A (en) * | 2014-12-29 | 2015-05-20 | 中国矿业大学 | Method for optimizing stress field of roadway area based on main stress differences |
| 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 |
| CN106443784A (en) * | 2016-10-20 | 2017-02-22 | 山东科技大学 | Fault zone rock burst dangerousness monitoring method |
| CN111460666A (en) * | 2020-04-02 | 2020-07-28 | 辽宁工程技术大学 | Rock burst danger prediction method for typical rock burst mine |
| CN111911209A (en) * | 2020-08-17 | 2020-11-10 | 河北工程大学 | Accurate targeted anchor grouting control method suitable for deep soft rock roadway |
Non-Patent Citations (1)
| Title |
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| 田志超等: "《利用煤层中缺陷体防治冲击地压》", 《煤炭工程》 * |
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Application publication date: 20210312 |