CN106353199A - Method for field real-time monitoring of creep type rock burst risk - Google Patents
Method for field real-time monitoring of creep type rock burst risk Download PDFInfo
- Publication number
- CN106353199A CN106353199A CN201610915586.3A CN201610915586A CN106353199A CN 106353199 A CN106353199 A CN 106353199A CN 201610915586 A CN201610915586 A CN 201610915586A CN 106353199 A CN106353199 A CN 106353199A
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- China
- Prior art keywords
- pressure
- creep
- observation
- loading
- hydraulic prop
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- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0071—Creep
Abstract
The invention discloses a method for field real-time monitoring of creep type rock burst risk. The method comprises the following steps: delineating a test area and determining an observation point; arranging a loading observation instrument on the observation point to test the loading observation; after stopping the loading, recording the pressure-time in real time by the observation instrument to form a pressure-time curve chart; and judging the creep property according to the creep mechanical principle and the pressure-time curve. The method disclosed by the invention can judge the risk of creep type rock burst for an ultra-deep mine, a roadway intensive mine areas, soft rock and deep mining so as to take measures to avoid the accidents caused by the rock burst.
Description
Technical field
The invention belongs to Coal Mining Technology field.
Background technology
With the increase of coal mining depth, more than 1000m, rock stratum is relatively soft, shock hazard for special mining depth
During strong coal seam, intensity that bump occurs, damage envelope, shock wave destructive power occur in that significant changes feature, are not having
Also bump can occur under conditions of disturbance, release is exactly creepage type bump to such energy suddenly.In recent years
Come, because the creepage type bump that mining depth reason occurs frequently occurs, its mine and impact coal seam quantity are continuously increased,
This kind of rock blast hazard has seriously govern the safety in production of China's coal-mine.The prediction of this kind of bump and preventing and treating are different from
General type, if productive limit is complicated, self-weight stress field is big, and residual structural stress field exists, the superposition of these multiple factors
Effect, makes the creepage type that coal (rock) body produces " strong " destroy, if being subject to the perturbation action of work surface Dynamic stress field, pole again
Easily there is the bump that scale is big, destruction is serious.
The region that these are susceptible to creepage type bump is between the preparatory working in exploiting field and stope mostly.Work as lane
After road driving, due to creep effect, so bump can occur.China opens Luan mining area, imperial coal field, mountain energy mining area etc. always
Mine, mining depth maximum reaches 1200m, and average mining depth is more than 800m.Therefore, coal body can quickly be judged at the scene
Creep properties, predicts creepage type shock hazard, significant to prevention and control coal body impact disaster.
Content of the invention
The purpose of the present invention is the problem for creepage type bump, proposes a kind of at-once monitor creepage type impact of scene
The dangerous method of ground pressure.
For reaching above-mentioned purpose, the present invention adopts the technical scheme that:
A kind of at-once monitor creepage type bump dangerous method in scene is it is characterised in that step is as follows:
The first step, delineation test zone and determination observation station
According to concrete coal seam conditions, there is heavily stressed, High confinement of energy region relatively intensive for tunnel, draw a circle to approve as test
Region；A gang of in test zone heading, choose the smooth place of roof and floor as observation station.
Second step, arrangement load observation instrument test
Arrange hydraulic prop in observation station, during arrangement, setting cross bar increases to lane at hydraulic prop top
The pressure area of road top board, wears the pressure area to roadway floor for the skate increase in hydraulic prop bottom, in monomer hydraulic
Pressure observation instrument is installed on pillar.
3rd step, loading observation
Set hydraulic prop operating pressure, operating pressure is set as 20-25mpa, then pass through supercharger to monomer
Hydraulic prop loads, until top board, bottom are compacted by plate, stops loading；Stop load after observation instrument real time record pressure-when
Between, form pressure-time curve figure.
4th step, creep propertieses are judged according to Creep Mechanics principle and pressure-time curve
After stopping loading, no longer increase if over time passage pressure, illustrate there is no creep；Push away if over the time
Move pressure to continue to increase, illustrated that creep occurs, the region that creep occurs is defined as bump deathtrap.
The positive effect of the present invention is: for ultra-deep mine, the intensive mining area in tunnel, soft rock and deep mining mine, energy
Judge the danger of creepage type bump in time, to take measures, it is to avoid the accident that bump causes.
Brief description
The enforcement of the present invention is described below in conjunction with the accompanying drawings.
Fig. 1 is the schematic diagram of the embodiment of the present invention；
Fig. 2 is the pressure-time curve schematic diagram of the embodiment of the present invention.
Marginal data, 1- cross bar, 2- skate, 3- hydraulic prop, 4- supercharger, 5- observation instrument-, 6- tunnel
Base plate, 7- back.
Specific embodiment
It is as follows that the dangerous method and step of creepage type bump is tested at the scene of the present invention immediately:
First, delineation test zone and determination observation station
According to concrete coal seam conditions, there is heavily stressed, High confinement of energy region relatively intensive for tunnel, draw a circle to approve as test
Region；A gang of in test zone heading, choose the smooth place of roof and floor as observation station.
2nd, arrangement loads observation instrument test
As shown in figure 1, arranging hydraulic prop 3 in observation station, during arrangement, cross is set at hydraulic prop 3 top
Back timber 1 increases the pressure area to back 7, wears skate 2 in hydraulic prop 3 bottom and increases applying to roadway floor 6
Pressure surface amasss, and installs pressure observation instrument 5 on hydraulic prop 3.
3rd, load observation
Set hydraulic prop 3 operating pressure, operating pressure is set as 20-25mpa, then pass through supercharger 4 to list
Body hydraulic prop 3 loads, until back 7 and roadway floor 6 are compacted, stops loading；After stopping loading, observation instrument 5 is real
Shi Jilu pressure versus time, forms pressure-time curve figure, as shown in Figure 2.
4th, creep propertieses are judged according to Creep Mechanics principle and pressure-time curve
After stopping loading, no longer increase if over time passage pressure, as shown in a curve in Fig. 2, illustrate not compacted
Become；Continue to increase as shown in b curve in Fig. 2 if over time passage pressure, illustrated that creep occurs, creep will occur
The region of phenomenon is defined as bump deathtrap.
Claims (1)
1. a kind of at-once monitor creepage type bump dangerous method in scene is it is characterised in that step is as follows:
The first step, delineation test zone and determination observation station
According to concrete coal seam conditions, there is heavily stressed, High confinement of energy region relatively intensive for tunnel, draw a circle to approve as test section
Domain；A gang of in test zone heading, choose the smooth place of roof and floor as observation station；
Second step, arrangement load observation instrument test
Arrange hydraulic prop in observation station, increase in hydraulic prop top setting cross bar during arrangement and tunnel is pushed up
The pressure area of plate, wears the pressure area to roadway floor for the skate increase in hydraulic prop bottom, in hydraulic prop
Upper installation pressure observation instrument；
3rd step, loading observation
Set hydraulic prop operating pressure, operating pressure is set as 20-25mpa, then pass through supercharger to monomer hydraulic
Pillar loads, until top board, bottom are compacted by plate, stops loading；Observation instrument real time record pressure versus time after stopping loading,
Form pressure-time curve figure；
4th step, creep propertieses are judged according to Creep Mechanics principle and pressure-time curve
After stopping loading, no longer increase if over time passage pressure, illustrate there is no creep；Elapse pressure if over the time
Power continues to increase, and has illustrated that creep occurs, the region that creep occurs is defined as bump deathtrap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610915586.3A CN106353199A (en) | 2016-10-20 | 2016-10-20 | Method for field real-time monitoring of creep type rock burst risk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610915586.3A CN106353199A (en) | 2016-10-20 | 2016-10-20 | Method for field real-time monitoring of creep type rock burst risk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106353199A true CN106353199A (en) | 2017-01-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610915586.3A Pending CN106353199A (en) | 2016-10-20 | 2016-10-20 | Method for field real-time monitoring of creep type rock burst risk |
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| Country | Link |
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| CN (1) | CN106353199A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483179A (en) * | 2020-12-18 | 2021-03-12 | 山东科技大学 | Method for judging impact risk of roof stope of separation layer by window intervention method |
| CN112557167A (en) * | 2020-12-18 | 2021-03-26 | 山东科技大学 | In-situ coal impact tendency observation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88203818U (en) * | 1988-02-27 | 1988-09-07 | 韩利平 | Sliding hydraulic prop with double carrying bar |
| CN103115821A (en) * | 2013-01-16 | 2013-05-22 | 山东科技大学 | In-situ test system and method of lane filler bearing property |
| CN103161480A (en) * | 2013-03-14 | 2013-06-19 | 中国矿业大学 | Method for actively supporting lane side filling gob-side entry retaining |
| CN104594926A (en) * | 2014-11-27 | 2015-05-06 | 太原理工大学 | Rapid composite roof roadway support method for high-stress water guiding karst cave group |
| CN105275462A (en) * | 2015-10-27 | 2016-01-27 | 山东科技大学 | Method for testing creep deformation type rock burst dangerous area immediately on site |
-
2016
- 2016-10-20 CN CN201610915586.3A patent/CN106353199A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88203818U (en) * | 1988-02-27 | 1988-09-07 | 韩利平 | Sliding hydraulic prop with double carrying bar |
| CN103115821A (en) * | 2013-01-16 | 2013-05-22 | 山东科技大学 | In-situ test system and method of lane filler bearing property |
| CN103161480A (en) * | 2013-03-14 | 2013-06-19 | 中国矿业大学 | Method for actively supporting lane side filling gob-side entry retaining |
| CN104594926A (en) * | 2014-11-27 | 2015-05-06 | 太原理工大学 | Rapid composite roof roadway support method for high-stress water guiding karst cave group |
| CN105275462A (en) * | 2015-10-27 | 2016-01-27 | 山东科技大学 | Method for testing creep deformation type rock burst dangerous area immediately on site |
Non-Patent Citations (1)
| Title |
|---|
| 刘宏军: "深部构造区域厚煤层工作面冲击地压防治技术", 《煤炭科学技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483179A (en) * | 2020-12-18 | 2021-03-12 | 山东科技大学 | Method for judging impact risk of roof stope of separation layer by window intervention method |
| CN112557167A (en) * | 2020-12-18 | 2021-03-26 | 山东科技大学 | In-situ coal impact tendency observation method |
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| 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 | ||
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Application publication date: 20170125 |