CN105275462A - Method for testing creep deformation type rock burst dangerous area immediately on site - Google Patents
Method for testing creep deformation type rock burst dangerous area immediately on site Download PDFInfo
- Publication number
- CN105275462A CN105275462A CN201510707286.1A CN201510707286A CN105275462A CN 105275462 A CN105275462 A CN 105275462A CN 201510707286 A CN201510707286 A CN 201510707286A CN 105275462 A CN105275462 A CN 105275462A
- Authority
- CN
- China
- Prior art keywords
- creep deformation
- creep
- coal body
- testing
- pressure
- 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.)
- Granted
Links
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention discloses a method for testing a creep deformation type rock burst dangerous area immediately on site, which comprises the steps that firstly two horizontal boreholes are constructed on the coal mass in a coal seam roadway of a delineated area where the above disaster possibly occurs, wherein the first borehole is used for installing a borehole stress meter which is used for testing vertical stress of the coal mass, and the second borehole is used for installing a coal mass creep deformation testing system which is used for testing creep deformation conditions of the coal mass; and the delineated area is determined to be an area in which a creep deformation bump disaster is about to occur when creep deformation occurs in the second borehole, and otherwise, the creep deformation bump disaster does not occur in the delineated area. The simple and easily implemented method for testing the creep deformation type rock burst dangerous area immediately on site is provided according to a creep deformation mechanics principle, and creep deformation type rock burst dangerous areas can be comprehensively judged as for an ultra-deep mine, a roadway intensive mining area and a deep mining mine, thereby having a positive effect for delineation of the creep deformation type rock burst dangerous areas.
Description
Technical field
The invention belongs to Coal Mining Technology field.
Background technology
Along with the increase of coal mining depth, bump mine and impact coal seam quantity constantly increase, and rock blast hazard seriously governs the safety in production of China's coal-mine.Facts have proved, along with seam mining develops to deep, impact strength and the frequency of more and more Deep Mine present the trend progressively increased, particularly the degree of depth is more than the mine of 1000m, the coal seam that rock stratum is relatively soft, shock hazard is strong, there is marked change feature in the intensity that bump occurs, damage envelope, shock wave destructive power, under the condition not having disturbance, also bump can occur, it is exactly creepage type bump that such energy discharges suddenly.The predication and prevention of this kind of bump is different from general type, if productive limit is complicated, self-weight stress field is large, residual structural stress field exists, the superposition of these multiple factors, the creepage type making coal (rock) body produce " strongly " destroys, if be subject to the perturbation action of work plane Dynamic stress field again, very easily occur scale greatly, destroy serious bump.
Ultra-deep portion, high-strength bump mainly occur in relatively intensive region, tunnel, and the heavily stressed distribution in these regions is wide, energy field scope is large, Coal Burst Tendency is high, in the preparatory working being mostly in exploiting field and stope space.After tunnelling, due to creep effect, can impact.Some old mining areas of China, mining depth is maximum reaches 1200m, and average mining depth is more than 800m.Therefore, the creep distribution of coal body can be judged at the scene fast, determine creep the rock burst fatalness area, significant to prevention and control coal body impact disaster.
Goal of the invention
The object of the invention is, for adopting dark larger colliery, the reality that creepage type rock blast hazard is difficult to carry out at the scene deathtrap judgement occurs, a kind of method that simple, easy scene judges creep bump deathtrap is immediately proposed, to take corresponding Forewarning Measures, prevent the generation of rock blast hazard.
For achieving the above object, the technical scheme that the present invention takes is:
A method for creepage type bump deathtrap is tested at scene immediately, and step is as follows:
The first step, in the preparatory working of mine district, according to condition of coal seam occurrence, the intensive situation in tunnel and depth profile, determines to there is region that is heavily stressed, High confinement of energy, and the delineation of this region is that the region that disaster is impacted in creep likely occurs;
Second step, delineation may occur in the heading in above-mentioned disaster region, the position of distance base plate heading 1.5-1.8m, the boring of two horizontal directions of constructing to coal body, first boring is for testing coal body vertical stress, and second boring is for testing coal body creep situation; Require that aperture 42mm, hole depth are generally more than 10m;
3rd step, according to existing stress in coal bed method of testing, installs borehole stressmeter to first boring, the vertical stress of test coal body;
3rd step, arranges coal body creep test macro; Coal body creep test macro can be contained in the cylindrical pliable capsule in second boring by one and the water booster system with pressure meter, flowmeter and overflow valve outside boring formed; Above-mentioned cylindrical pliable capsule one end is provided with outlet valve, and the other end is provided with connector, and capsule axis is provided with taut wire, can only expanded radially under taut wire effect; First cylindrical pliable capsule outlet valve is opened during layout, be connected with water booster system with high-pressure hose, start water booster system, liquid is filled with to cylindrical pliable capsule, gas is discharged simultaneously, when cylindrical pliable capsule evacuate air, liquid are full of, close outlet valve and water booster system simultaneously, then the cylindrical pliable capsule being full of liquid is put into foot of hole;
4th step, arranges the operating pressure of water booster system, and the operating pressure of setting equals the vertical stress of coal body; Restart water booster system, be filled with liquid to cylindrical pliable capsule, now cylindrical pliable capsule starts to expand, and is progressively close to hole wall extruding coal body, the fluid pressure of water booster system starts to rise, after being loaded into the operating pressure of setting, pressurization stops, and starts observational record pressure tabular value situation of change, if pressure tabular value rises gradually, illustrate that distortion appears in coal body, boring extruded cylindrical flexible capsule makes pressure raise, and this distortion is exactly creep; If continued along with this pressure of passage of time raises phenomenon, the region of delineation is just defined as, by having, the region that disaster is impacted in creep occurs, otherwise creep impact disaster can not occur in the region of delineation.
Good effect of the present invention is: according to Creep Mechanics principle, invent a kind of method that simple, easy scene judges creep bump deathtrap immediately, for ultra-deep mine, intensive mining area, tunnel, soft rock and deep mining mine, the deathtrap of creepage type bump can be judged comprehensively, the deathtrap of creepage type bump delimited there is positive role.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, enforcement of the present invention is described.
Fig. 1 is delineation test zone figure and borehole pattern;
Fig. 2 is test macro schematic diagram;
Pressure versus time coordinate diagram when Fig. 3 is coal body creep.
In figure, 1-borehole stressmeter, 2-water booster system, 3-flows valve, 4-flowmeter, 5-pressure meter, 6-high-pressure hose, 7-connector, 8-cylindrical pliable capsule, 9-taut wire, 10-outlet valve.
Detailed description of the invention
A method for creepage type bump deathtrap is tested at scene immediately, and step is as follows:
In the preparatory working of mine district, according to condition of coal seam occurrence, the intensive situation in tunnel and depth profile, determine to there is region that is heavily stressed, High confinement of energy, the delineation of this region is that the region that disaster is impacted in creep likely occurs; Elliptic region as shown in Figure 1;
Second step, delineation may occur in the heading in above-mentioned disaster region, the position of distance base plate heading 1.5-1.8m, the boring of two horizontal directions of constructing to coal body, first boring is for testing coal body vertical stress, and second boring is for testing coal body creep situation; Require that aperture 42mm, hole depth are generally more than 10m; Drilling situation as shown in Figure 1;
3rd step, according to existing stress in coal bed method of testing, installs borehole stressmeter 1 to first boring, the vertical stress of test coal body, as shown in Figure 2;
3rd step, arranges coal body creep test macro; Coal body creep test macro can form according to cylindrical pliable capsule 8 in the borehole with the water booster system 2 of pressure meter 5, flowmeter 4 and overflow valve 3 by one; Above-mentioned cylindrical pliable capsule 8 one end is provided with outlet valve 10, and the other end is provided with connector 7, and capsule axis is provided with taut wire 9, can only expanded radially under taut wire 9 acts on; First cylindrical pliable capsule 8 outlet valve 10 is opened during layout, be connected with water booster system 2 with high-pressure hose 6, start water booster system 2, liquid is filled with to cylindrical pliable capsule 8, gas is discharged simultaneously, when cylindrical pliable capsule 8 evacuate air, liquid are full of, close outlet valve 10 and water booster system 2 simultaneously, again the cylindrical pliable capsule 8 being full of liquid is put into foot of hole, as shown in Figure 2;
4th step, arranges the operating pressure of water booster system 2, and the operating pressure of setting equals the vertical stress of coal body; Restart water booster system 2, be filled with liquid to cylindrical pliable capsule 8, now cylindrical pliable capsule 8 starts to expand, and is progressively close to hole wall extruding coal body, the fluid pressure of water booster system 2 starts to rise, after being loaded into the operating pressure of setting, stop pressurization, start observational record pressure tabular value, if pressure tabular value rises gradually, illustrate that distortion appears in coal body, extruded cylindrical flexible capsule 8 makes pressure raise, and this distortion is exactly creep; If continued along with this pressure of passage of time raises phenomenon, just determine the region impacting disaster for creep will be there is of drawing a circle to approve, otherwise impact the region of disaster for creep can not be there is.As shown in Figure 3, if occur, curve 1 situation illustrates do not have creep, if occur, curve 2 situation illustrates there is creep.
Claims (1)
1. a method for creepage type bump deathtrap is tested at scene immediately, it is characterized in that, step is as follows:
The first step, in the preparatory working of mine district, according to condition of coal seam occurrence, the intensive situation in tunnel and depth profile, determines to there is region that is heavily stressed, High confinement of energy, and the delineation of this region is that the region that disaster is impacted in creep likely occurs;
Second step, delineation may occur in the heading in above-mentioned disaster region, the position of distance base plate heading 1.5-1.8m, the boring of two horizontal directions of constructing to coal body, first boring is for testing coal body vertical stress, and second boring is for testing coal body creep situation; Require that aperture 42mm, hole depth are more than 10m;
3rd step, according to stress in coal bed method of testing, installs borehole stressmeter to first boring, the vertical stress of test coal body;
3rd step, arranges coal body creep test macro; Coal body creep test macro can be contained in the cylindrical pliable capsule in second boring by one and the water booster system with pressure meter, flowmeter and overflow valve outside boring formed; Above-mentioned cylindrical pliable capsule one end is provided with outlet valve, and the other end is provided with connector, and cylindrical pliable capsule axis is provided with taut wire, and under taut wire effect, cylindrical pliable capsule can only expanded radially; First cylindrical pliable capsule outlet valve is opened during layout, be connected with water booster system with high-pressure hose, start water booster system, liquid is filled with to cylindrical pliable capsule, gas is discharged simultaneously, when cylindrical pliable capsule evacuate air, liquid are full of, close outlet valve and water booster system simultaneously, then the cylindrical pliable capsule being full of liquid is put into foot of hole;
4th step, arranges the operating pressure of water booster system, and the operating pressure of setting equals the vertical stress of coal body; Restart water booster system, be filled with liquid to cylindrical pliable capsule, now cylindrical pliable capsule starts to expand, and is progressively close to hole wall extruding coal body, the fluid pressure of water booster system starts to rise, after being loaded into the operating pressure of setting, pressurization stops, and starts observational record pressure tabular value situation of change, if pressure tabular value rises gradually, illustrate that distortion appears in coal body, boring extruded cylindrical flexible capsule makes pressure raise, and this distortion is exactly creep; If continued along with this pressure of passage of time raises phenomenon, the region of delineation is just defined as, by having, the region that disaster is impacted in creep occurs, otherwise creep impact disaster can not occur in the region of delineation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510707286.1A CN105275462B (en) | 2015-10-27 | 2015-10-27 | The method of the live danger zone of test creepage type bump immediately |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510707286.1A CN105275462B (en) | 2015-10-27 | 2015-10-27 | The method of the live danger zone of test creepage type bump immediately |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105275462A true CN105275462A (en) | 2016-01-27 |
| CN105275462B CN105275462B (en) | 2018-01-09 |
Family
ID=55145194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510707286.1A Expired - Fee Related CN105275462B (en) | 2015-10-27 | 2015-10-27 | The method of the live danger zone of test creepage type bump immediately |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105275462B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353199A (en) * | 2016-10-20 | 2017-01-25 | 山东科技大学 | Method for field real-time monitoring of creep type rock burst risk |
| CN106437702A (en) * | 2016-10-20 | 2017-02-22 | 山东科技大学 | Method for monitoring head-on impact ground pressure danger of soft coal seam roadway |
| CN110107358A (en) * | 2019-05-01 | 2019-08-09 | 山东科技大学 | A kind of a wide range of rock burst hazard prediction method during tunnelling |
| CN112483183A (en) * | 2020-12-18 | 2021-03-12 | 山东科技大学 | Method for judging impact risk of working face side to hard top plate by window intervention method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10008450C1 (en) * | 2000-02-23 | 2001-09-27 | Montan Tech Gmbh | Test drilling to assess the risk of a rock fall at a coal mine uses high pressure water jets to drill into the mine seam with measurements of at least one drilling parameter to be correlated with the level of danger |
| CN1433862A (en) * | 2003-02-27 | 2003-08-06 | 武汉理工大学 | Method for preparing composition gradient intermediate transition layer on wedge shape or complex shape drill working-surface |
| CN102590853A (en) * | 2012-01-12 | 2012-07-18 | 山东科技大学 | Micro quantitative observation method used for dynamic pressure disturbance range of rock burst coal seam |
| CN103090780A (en) * | 2013-01-11 | 2013-05-08 | 山东科技大学 | Mine drilling micro displacement measurement instrument |
| CN104389637A (en) * | 2014-10-14 | 2015-03-04 | 河南理工大学 | A method for determining loosening blasting danger-relieving range of coal beds with rock burst |
| CN104453898A (en) * | 2014-10-23 | 2015-03-25 | 山东科技大学 | Deep hole blasting and static water injecting combining coal seam weakening method |
-
2015
- 2015-10-27 CN CN201510707286.1A patent/CN105275462B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10008450C1 (en) * | 2000-02-23 | 2001-09-27 | Montan Tech Gmbh | Test drilling to assess the risk of a rock fall at a coal mine uses high pressure water jets to drill into the mine seam with measurements of at least one drilling parameter to be correlated with the level of danger |
| CN1433862A (en) * | 2003-02-27 | 2003-08-06 | 武汉理工大学 | Method for preparing composition gradient intermediate transition layer on wedge shape or complex shape drill working-surface |
| CN102590853A (en) * | 2012-01-12 | 2012-07-18 | 山东科技大学 | Micro quantitative observation method used for dynamic pressure disturbance range of rock burst coal seam |
| CN103090780A (en) * | 2013-01-11 | 2013-05-08 | 山东科技大学 | Mine drilling micro displacement measurement instrument |
| CN104389637A (en) * | 2014-10-14 | 2015-03-04 | 河南理工大学 | A method for determining loosening blasting danger-relieving range of coal beds with rock burst |
| CN104453898A (en) * | 2014-10-23 | 2015-03-25 | 山东科技大学 | Deep hole blasting and static water injecting combining coal seam weakening method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353199A (en) * | 2016-10-20 | 2017-01-25 | 山东科技大学 | Method for field real-time monitoring of creep type rock burst risk |
| CN106437702A (en) * | 2016-10-20 | 2017-02-22 | 山东科技大学 | Method for monitoring head-on impact ground pressure danger of soft coal seam roadway |
| CN106437702B (en) * | 2016-10-20 | 2018-06-19 | 山东科技大学 | Soft seam tunnel is met head on the monitoring method of bump danger |
| CN110107358A (en) * | 2019-05-01 | 2019-08-09 | 山东科技大学 | A kind of a wide range of rock burst hazard prediction method during tunnelling |
| CN112483183A (en) * | 2020-12-18 | 2021-03-12 | 山东科技大学 | Method for judging impact risk of working face side to hard top plate by window intervention method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105275462B (en) | 2018-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108643877B (en) | Coal mine underground coal seam long drilling staged fracturing permeability-increasing and gas extraction method | |
| CN105275462A (en) | Method for testing creep deformation type rock burst dangerous area immediately on site | |
| CN103939099B (en) | The prevention and controls of the dangerous coal seam group bump of a kind of thump | |
| CN110439497B (en) | Drilling multi-section plugging, fracturing, grouting and water injection integrated equipment and use method | |
| CN102606177B (en) | Hydraulic prop for hydraulic support system | |
| CN106401588B (en) | Bump preventing control method during fault zone inner working face is exploited | |
| CN109209472A (en) | The coal seam pressure relief anti-burst method that a kind of punching, explosion, water filling intercouple | |
| CN109139092B (en) | One-hole multipurpose construction method for treating impact and gas disaster of deep-buried coal seam | |
| CN110195580A (en) | A kind of gas-liquid two-phase synergy coal seam anti-reflection method | |
| CN103161493A (en) | Gas-liquid-solid three-phase coupling blasting weakening rock burst and permeability increasing method | |
| CN108999596B (en) | Method for gas explosion fracturing of coal rock mass by supercritical CO2 point-type jet flow | |
| CN114165197B (en) | Pressure-relief and permeability-increasing device and method for pulse hydraulic fracturing coal seam | |
| AU2023251557A1 (en) | Method for fracturing rock formation through fracture network based on variable-frequency pulse and device thereof | |
| CN103939143B (en) | The assay method of heading zone of fracture influence basin and device thereof | |
| CN108386193A (en) | A kind of hard integrality top plate chemically expansible pressure break pressure relief method in end | |
| CN111985101A (en) | Deep well impact dangerous roadway branch unloading coupling scour prevention method | |
| CN110410053B (en) | Coal mine roof pressure relief method based on eyelet supporting | |
| CN110017140B (en) | Method for preventing and treating coal pillar compression type rock burst | |
| CN109268060B (en) | Explosion-injection integrated region outburst prevention method based on strong and weak structure | |
| CN105401913A (en) | Packer rubber sleeve outburst prevention structure | |
| CN217206449U (en) | Directional hydraulic topping device | |
| CN113494264B (en) | Waterproof layer reinforced grouting reconstruction device and method based on segmented fracturing | |
| CN114776272A (en) | Pressure-relief permeability-increasing method for overlying key layer of hydraulic fracturing | |
| CN207538814U (en) | A kind of capsule hole | |
| CN105242327A (en) | Method for testing shake penetration capacity of coal body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180109 Termination date: 20211027 |