CN101915098A - Method for preventing and controlling rock burst through hydraulic cutting - Google Patents
Method for preventing and controlling rock burst through hydraulic cutting Download PDFInfo
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- CN101915098A CN101915098A CN 201010231230 CN201010231230A CN101915098A CN 101915098 A CN101915098 A CN 101915098A CN 201010231230 CN201010231230 CN 201010231230 CN 201010231230 A CN201010231230 A CN 201010231230A CN 101915098 A CN101915098 A CN 101915098A
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- 238000000034 method Methods 0.000 title claims abstract description 58
- 239000011435 rock Substances 0.000 title claims abstract description 48
- 238000005520 cutting process Methods 0.000 title claims abstract description 26
- 239000003245 coal Substances 0.000 claims abstract description 56
- 238000005065 mining Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 230000006378 damage Effects 0.000 claims description 8
- 239000010410 layer Substances 0.000 claims description 8
- 230000003313 weakening effect Effects 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 3
- 230000009172 bursting Effects 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 238000004880 explosion Methods 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000005553 drilling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000003116 impacting effect Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Abstract
The invention relates to a method for preventing and controlling rock burst through hydraulic cutting. Different modes of hydraulic cutting is used for preventing and controlling the rock burst according to the specific coal burst geology, the mining conditions and the rock burst characteristics. For coal pillar type burst, coal deep radial hydraulic cutting is used for preventing and controlling the rock burst; for floor heave type burst, radial hydraulic cutting at bottom feet on both sides of a roadway is used for preventing and controlling the rock burst; and for structural or dynamic pressure type burst, toroidal hydraulic cutting or combined toroidal hydraulic cutting and deep radial hydraulic cutting is used for preventing and controlling the rock burst. Formed slot groups have the functions of releasing the pressure of coal rock mass and shielding or reducing stress and deformation energy transmission and have the effect of effectively preventing and controlling the rock burst. The method can also be used for preventing and controlling coal and gas bursting, preventing and controlling roadway deformation and drawing out gas for pressure release, and can also be applied to the rock burst prevention and control of metal mines, tunnels or coal mines.
Description
Technical field
The present invention relates to a kind of method of preventing and treating bump, especially a kind of digging space method of the preventing and controlling rock burst through hydraulic cutting of coal and rock on every side that is applicable to belongs to mine pressure and mine safety technical field.
Background technology
In mine excavation engineering or construction of tunnel, when the stress around digging space or the tunnel surpasses the supporting capacity of coal and rock, the unexpected dynamic property that coal and rock can occur is destroyed, be out of shape in a large number or launch to digging space or tunnel space moment, and discharge a large amount of elastic energys, Here it is bump (metal mine or tunnel claim rock burst).Bump has a strong impact on the safety and the production in mine, can cause gross distortion destruction, personnel death and device damage, the displacement etc. in digging space or tunnel; The coal containing methane gas layer can cause that also coal seam or goaf gas pour out when take place impacting, and meets fire and easily causes gas explosion and (impact as the Huaibei, Anhui " 5.13 " top board in 2003 and to cause the goaf gas initiation gas explosion that pours out, dead 84 people; Colliery, Sun Jia gulf, Fuxin " 2.14 " bump accident in 2005 causes dead 214 people of gas explosion).Present China great majority are adopted dark bigger colliery and dynamic phenomenons such as bump occurred, and with adopting dark increasing, there are the numeber of mines and the danger of burst degree of danger of burst to be on the rise, originally there were not the mining area or the mine of danger of burst serious bump phenomenon or accident to occur, as mining area, Yanzhou, mining area, Jixi, Qitaihe mining area, mining area, table mountain, Huainan Mining Area etc.
The method of administering bump at present mainly contains exploitation topping, coal-bed flooding, destressing borehole, roof break and release explosion (or loosening blasting) etc.At getting working face and tunnel control bump, coal-bed flooding and release explosion are the most frequently used measures, be that elastic energy by reducing the coal seam and stress transfer peak value weaken or shift bump, measure validity is limited, can only weaken or shift impact for the shock hazard especially severe, and coal-bed flooding easily causes country rock and roadway deformation, and impact is easily brought out in the release explosion.
Summary of the invention
Technical problem: the purpose of this invention is to provide a kind of method of preventing and controlling rock burst through hydraulic cutting, in coal and rock around the digging space, form slot by hydraulic slotted liner technique and prevent and treat bump.
Technical scheme: the method for preventing and controlling rock burst through hydraulic cutting of the present invention: according to geology, mining condition and the bump characteristics of concrete coal mine impact, adopt water under high pressure that coal column type bump, end distension type bump, structure type or dynamic pressure type bump are carried out hydraulic slotted liner technique, as follows respectively:
Coal column type bump: to the single or many gang drills hole of coal seam direction construction, hole depth 5～12m, by at the bottom of the hole outward to apart from aperture 2～3m place, adopt radially hydraulic slotted liner technique of deep, in the coal seam, form radially slot of deep, make the coal rock layer release, prevent the generation of coal column type bump, and the stress when weakening coal column type bump and taking place and energy transmission and to the destruction in tunnel;
End distension type bump: adopt in tunnel side feet hydraulic slotted liner technique radially, the radially slot of a plurality of footing of constructing at tunnel side feet place, to reduce the stress concentration degree of roadway floor, prevent the generation of end distension type bump, and the stress when weakening end distension type bump and taking place and energy transmission and to the destruction of roadway floor;
Structure type or dynamic pressure type bump: adopt in the tunnel-surrounding coal seam radially hydraulic slotted liner technique of hoop hydraulic slotted liner technique or hoop, deep, construction hoop slot or hoop slot and deep slot radially in the coal seam of tunnel-surrounding, make roadway surrounding rock in the radial direction or radially, the equal release of hoop two directions, prevent the generation of structure type or dynamic pressure type bump, and shielding or the stress when weakening bump and taking place and energy transmission and to the destruction in tunnel, the hoop slot is one or more layers.
Described water under high pressure is high-pressure water jet, abrasive water-jet or rotating fluid; The pressure of described water under high pressure is that 25～100MPa, flow are 5～80L/min; The described deep radially degree of depth of slot is 5-12m, and the deep radially radius of slot is 300-1000mm, and width is 15-50mm; The described footing radially width of slot is 20mm-120mm, and its degree of depth is 300～1500mm; Described hoop slot is a single or multiple lift, and single layer of rings is 3～5m to slot or multilayer hoop slot outermost one deck apart from the distance of rib, and the radius of hoop slot is 300-1000mm, and width is 15-50mm.
Beneficial effect: this method provides a kind of technical method of comprehensive control bump, can administer various types of bumps.Geology, mining condition and bump characteristics according to concrete coal mine impact, utilize the hydraulic slotted liner technique formation slot group of different modes to prevent and treat bump, slot is all risen to making coal and rock release and shielding or weakening stress and the effect of deformation energy transmission, can play the effect of effective control bump.Deep radially slot has been equivalent to exploit one deck topping as thin as a wafer in coal and rock, can effectively discharge elastic energy and stress in the coal and rock; The hoop slot formed in coal and rock by force-weak-strong structure, can release portion stress, and main is the propagation that can effectively shield or weaken coal and rock elastic energy or stress, eliminates or weakens the calamity degree that causes of impacting; Tunnel footing radially slot can effectively discharge elastic energy and the stress that roadway floor gathers.Therefore, the slot group energy of formation is is enough effectively prevented and treated bump.This method also can be applicable to prevent and treat coal and gas is outstanding, prevent and treat roadway deformation and extraction gas pressure relief, also can be applicable to the rock burst in metal mine, tunnel or colliery, be applied to prevent and treat the outstanding and anti-reflection discharging in coal seam of coal and gas or when drawing out methane, adopt the radially method of hydraulic slotted liner technique or hoop hydraulic slotted liner technique of deep.This method also can be applicable to prevent and treat coal and gas is outstanding, prevent and treat roadway deformation and extraction gas pressure relief.Deep radially slot has been equivalent to exploit one deck topping as thin as a wafer in coal and rock, can effectively discharge elastic energy and stress in the coal and rock, the elastic energy that also can effectively discharge or discharge when alleviating the top board aggravating activities; The hoop slot formed in coal and rock by force-weak-strong structure, can release portion stress, and main is the propagation that can effectively shield or weaken coal and rock elastic energy or stress, eliminates or weakens the calamity degree that causes of impacting; Tunnel footing radially slot can effectively discharge elastic energy and the stress that roadway floor gathers.Therefore, the slot group energy of formation is is enough effectively prevented and treated bump, avoids occurring roadway destruction or distortion.
Description of drawings
Fig. 1 is the flow chart of preventing and controlling rock burst through hydraulic cutting of the present invention.
Fig. 2 is a radially preventing and controlling rock burst through hydraulic cutting schematic diagram of deep of the present invention.
Fig. 3 is a radially preventing and controlling rock burst through hydraulic cutting schematic diagram of tunnel of the present invention side feet.
Fig. 4 is a hoop preventing and controlling rock burst through hydraulic cutting schematic diagram of the present invention.
Among the figure: 1-boring, the 2-deep is slot radially, and the 3-footing is slot radially, 4-hoop slot.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are further described:
Shown in Figure 1, the flow chart of preventing and controlling rock burst through hydraulic cutting of the present invention.At first in tunnel or work plane, determine the hydraulic slotted liner technique zone, historical or geology, mining condition and bump characteristics, the type of bump may take place in the future according to concrete colliery, adopt different hydraulic slotted liner technique modes to prevent and treat bump for dissimilar bumps.The zone of pressing on selected hydraulic slotted liner technique control ground, arrange the hydraulic slotted liner technique equipment, the hydraulic slotted liner technique equipment comprises compression pump, the high-pressure water pipe that is connected with pump and hydraulic slotted liner technique shower nozzle, the used water under high pressure of hydraulic slotted liner technique can be high-pressure water jet, abrasive water-jet or rotating fluid, pressure is 25～100MPa, and flow is 5～80L/min.
1, for coal column type bump: adopt radially preventing and controlling rock burst through hydraulic cutting mode of coal seam depth, shown in Fig. 2 (a), the precalculated position of at first in the coal seam, drilling in the tunnel, the degree of depth of each boring 1 is 5-12m, withdraws from drilling rod; At the bottom of the hydraulic slotted liner technique shower nozzle sent into the hole, open water pump and begin to boring both sides slot; Shower nozzle and water pipe are moved back in slot limit, limit, and the deep of the formation radially radius of slot is 300-1000mm, and width is 15-50mm; When slot to apart from the aperture or the distance of rib stop slot when being 2～3m, switch off the pump, withdraw from shower nozzle and water pipe, the deep of finishing this boring is hydraulic slotted liner technique radially; Can proceed radially hydraulic slotted liner technique of next boring and deep; Thinner as the coal seam, boring of employing individual layer and deep radially slot get final product, and boring and deep radially slot are positioned in the middle of the coal seam; The coal seam is thicker during greater than 1.5m, adopts alternately boring and deep slot radially of two-layer above multilayer, shown in Fig. 2 (b).
2, for end distension type bump: adopt at tunnel side feet preventing and controlling rock burst through hydraulic cutting radially, as shown in Figure 3.Aim at the tunnel side feet with direct projection waterpower shower nozzle, directly blanking becomes slot, the blanking while moving; The footing radially width of slot 3 is 20mm-120mm, and the degree of depth is 300～1500mm; Length direction can be continuous slot, also can be the discontinuous slot.
3, impact for structure type or dynamic pressure type: adopt the radially hydraulic slotted liner technique control bump that combines of hoop hydraulic slotted liner technique or hoop, deep.When adopting the hoop hydraulic slotted liner technique, as Fig. 4 (a, b), the precalculated position of in the coal seam, drilling earlier, the degree of depth of boring 1 is 3-12m, withdraws from drilling rod; To rotate hydraulic slotted liner technique shower nozzle and water pipe and send at the bottom of the hole, and open water pump and begin the hoop hydraulic slotted liner technique; When ickings reduces in a large number, stop the hoop hydraulic slotted liner technique, this hoop slot 4 is finished, and the radius of the hoop slot of formation is 300-1000mm, and width is 15-50mm; To rotate waterpower shower nozzle and water pipe and step back 2～3m, and continue the construction of the next hoop slot of hoop, but will guarantee that the distance apart from the nearest hoop slot of rib apart from rib is not less than 3m, guarantee not cut anchor pole or anchor cable; Hoop slot 4 can be one or more layers, and the distance apart from rib during individual layer is 3～5m, and the distance apart from rib during multilayer is 3～12m.Utilize same boring to implement hoop and deep simultaneously radially during hydraulic slotted liner technique, release and erosion control effect are best.
4,, can adopt radially hydraulic slotted liner technique, hoop hydraulic slotted liner technique and the footing hydraulic slotted liner technique control bump that combines radially of deep for the mixed type bump that occurs the distortion of end distension and rib simultaneously.
5, this method is applied to prevent and treat the outstanding and anti-reflection discharging in coal seam of coal and gas or when drawing out methane, adopts deep radially hydraulic slotted liner technique or hoop hydraulic slotted liner technique.
Claims (7)
1. the method for a preventing and controlling rock burst through hydraulic cutting, it is characterized in that: according to geology, mining condition and the bump characteristics of concrete coal mine impact, adopt water under high pressure that coal column type bump, end distension type bump, structure type or dynamic pressure type bump are carried out hydraulic slotted liner technique, as follows respectively:
Coal column type bump: to the single or many gang drills hole of coal seam direction construction, hole depth 5～12m, by at the bottom of the hole outward to apart from aperture 2～3m place, adopt radially hydraulic slotted liner technique of deep, in the coal seam, form radially slot (2) of deep, make the coal rock layer release, prevent the generation of coal column type bump, and the stress when weakening coal column type bump and taking place and energy transmission and to the destruction in tunnel;
End distension type bump: adopt in tunnel side feet hydraulic slotted liner technique radially, the radially slot (3) of a plurality of footing of constructing at tunnel side feet place, to reduce the stress concentration degree of roadway floor, prevent the generation of end distension type bump, and the stress when weakening end distension type bump and taking place and energy transmission and to the destruction of roadway floor;
Structure type or dynamic pressure type bump: adopt in the tunnel-surrounding coal seam radially hydraulic slotted liner technique of hoop hydraulic slotted liner technique or hoop, deep, construction hoop slot (4) or hoop slot (4) and deep slot (2) radially in the coal seam of tunnel-surrounding, make roadway surrounding rock in the radial direction or radially, the equal release of hoop two directions, prevent the generation of structure type or dynamic pressure type bump, and shielding or the stress when weakening bump and taking place and energy transmission and to the destruction in tunnel.
2. the method for preventing and controlling rock burst through hydraulic cutting according to claim 1, it is characterized in that: described water under high pressure is high-pressure water jet, abrasive water-jet or rotating fluid.
3. the method for preventing and controlling rock burst through hydraulic cutting according to claim 1 and 2, it is characterized in that: the pressure of described water under high pressure is that 25～100MPa, flow are 5～80L/min.
4. the method for preventing and controlling rock burst through hydraulic cutting according to claim 1, it is characterized in that: the described deep radially degree of depth of slot (2) is 5-12m, and the deep radially radius of slot (2) is 300-1000mm, and width is 15-50mm.
5. the method for preventing and controlling rock burst through hydraulic cutting according to claim 1, it is characterized in that: the described footing radially width of slot (3) is 20mm-120mm, and its degree of depth is 300～1500mm.
6. the method for preventing and controlling rock burst through hydraulic cutting according to claim 1, it is characterized in that: described hoop slot (4) is a single or multiple lift, single layer of rings is 3～5m to slot or multilayer hoop slot outermost one deck apart from the distance of rib.
7. according to the method for claim 1 or 6 described preventing and controlling rock burst through hydraulic cutting, it is characterized in that: the radius of described hoop slot (4) is 300-1000mm, and width is 15-50mm.
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| CN 201010231230 CN101915098A (en) | 2010-07-14 | 2010-07-14 | Method for preventing and controlling rock burst through hydraulic cutting |
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| RU2454540C1 (en) * | 2010-12-27 | 2012-06-27 | Учреждение Российской академии наук Институт горного дела Сибирского отделения РАН | Rock pressure control method |
| CN102777180A (en) * | 2012-07-26 | 2012-11-14 | 山东能源集团有限公司 | Method for actively and regionally preventing and controlling rock burst in coal mines |
| CN102797465A (en) * | 2012-09-10 | 2012-11-28 | 河南理工大学 | Underground ultra-thin virtual protection layer hydraulic coal mining method |
| CN103016057A (en) * | 2012-12-20 | 2013-04-03 | 大同煤矿集团有限责任公司 | Prevention method for dynamic pressure area of working face |
| CN103758570A (en) * | 2014-01-14 | 2014-04-30 | 中国矿业大学 | Method for controlling high mine pressure of open-air roadway by hydraulic fracturing |
| CN104213919A (en) * | 2014-08-06 | 2014-12-17 | 中国矿业大学 | Prevention method of shallow-buried steeply-inclined coal seam rock burst |
| CN104533430A (en) * | 2015-01-05 | 2015-04-22 | 中国电建集团华东勘测设计研究院有限公司 | Breakage and slippage type rockburst risk relieving high-pressure water injection device and construction method of breakage and slippage type rockburst risk relieving high-pressure water injection device |
| CN105822304A (en) * | 2016-03-23 | 2016-08-03 | 河南理工大学 | Directional hydraulic power grooving remote control method for gob-side entry top cutting and pressure discharging |
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| CN108252716A (en) * | 2018-02-06 | 2018-07-06 | 新疆大学 | A kind of working face wall guard method for applying artificial cutting seam |
| CN108871411A (en) * | 2018-06-27 | 2018-11-23 | 中煤科工集团重庆研究院有限公司 | Layer-through drilling hydraulic slotted liner technique release evaluation method |
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| CN110017140A (en) * | 2019-04-11 | 2019-07-16 | 天地科技股份有限公司 | The method for preventing and treating coal column compression-type bump |
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| CN102777180A (en) * | 2012-07-26 | 2012-11-14 | 山东能源集团有限公司 | Method for actively and regionally preventing and controlling rock burst in coal mines |
| CN102797465A (en) * | 2012-09-10 | 2012-11-28 | 河南理工大学 | Underground ultra-thin virtual protection layer hydraulic coal mining method |
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| CN109723421A (en) * | 2018-11-27 | 2019-05-07 | 中铁十九局集团矿业投资有限公司 | A kind of Initiative defence method of gas tunnel rock burst under high-ground stress |
| CN110017140A (en) * | 2019-04-11 | 2019-07-16 | 天地科技股份有限公司 | The method for preventing and treating coal column compression-type bump |
| CN110080771A (en) * | 2019-05-21 | 2019-08-02 | 北京科技大学 | A kind of deep-well high stress pillar releases the method that can be modified prevention and treatment bump |
| CN110617044A (en) * | 2019-07-23 | 2019-12-27 | 重庆大学 | Ultrahigh-pressure water jet slotting system and using method thereof |
| CN110454164A (en) * | 2019-09-18 | 2019-11-15 | 天地科技股份有限公司 | Impulsion pressure tunnel buffering energy-absorbing band waterpower pre-setting method |
| CN110454164B (en) * | 2019-09-18 | 2020-10-16 | 天地科技股份有限公司 | Hydraulic presetting method for buffering energy-absorbing belt of impact mine pressure roadway |
| CN112709571A (en) * | 2019-10-24 | 2021-04-27 | 西安闪光能源科技有限公司 | Coal mine tunnel rock burst prevention and control method based on controllable shock wave pre-splitting pressure relief |
| CN110748345A (en) * | 2019-12-05 | 2020-02-04 | 华北科技学院 | Method for preventing rock burst of deep double-roadway arrangement working face of coal mine |
| CN110748345B (en) * | 2019-12-05 | 2021-04-09 | 华北科技学院 | Method for preventing rock burst of deep double-roadway arrangement working face of coal mine |
| CN111927456A (en) * | 2020-09-10 | 2020-11-13 | 山东科技大学 | Dynamic-loading deep mining area coal pillar instability unloading-fixing-letting multistage prevention and control method |
| CN113216951A (en) * | 2021-06-03 | 2021-08-06 | 中南大学 | Non-explosive mechanical mining method for deep hard rock mine |
| CN113216951B (en) * | 2021-06-03 | 2021-12-14 | 中南大学 | Non-explosive mechanical mining method for deep hard rock mine |
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Application publication date: 20101215 |