CN102518436B - Method for controlling tectonic rock burst in coal mine tunneling - Google Patents
Method for controlling tectonic rock burst in coal mine tunneling Download PDFInfo
- Publication number
- CN102518436B CN102518436B CN201110378683.0A CN201110378683A CN102518436B CN 102518436 B CN102518436 B CN 102518436B CN 201110378683 A CN201110378683 A CN 201110378683A CN 102518436 B CN102518436 B CN 102518436B
- Authority
- CN
- China
- Prior art keywords
- pressure
- grouting
- tectonic
- yielding
- allow
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a method for controlling tectonic rock burst in coal mine tunneling. The method comprises the following steps of: defining a tectonic rock burst danger area; erecting a row of high-strength yielding grouting anchor rods at the top of a tunnel roof being tunneled in the key controlling area along the tunnel; when the yielding grouting anchor rods perform primary yielding through a W steel belt and secondary yielding through a yielding pipe, grouting the gaps of the tectonic area through a grouting device at the tail ends of the yielding grouting anchor rods; and after the tunnel roof is cured, continuing to tunnel forward. In the invention, as the high-strength yielding grouting anchor rods are mounted at the middle part of the tunnel in the tectonic area, the danger of tectonic rock burst is fundamentally reduced; and by adopting the yielding grouting anchor rods for support, the anchor rods can be effectively prevented from being broken by the rock burst load so as to realize the support effect.
Description
Technical field
The invention belongs to the Coal Mining Technology field.
Background technology
Some colliery belongs to complex structure, mine coal seam is composed to deposit and changed the mine large, that the lithostructure otherness is large.Along with the increase of the pit mining degree of depth, the fringe conditions of exploitation complicated, the bump that geological structure causes is more outstanding.Occur in structure realm more and more serious with the bump of the dynamic stress field of exploitation formation, the place ahead of meeting head on of tunnelling process usually is attended by structure, coal rock layer textural anomaly, dynamic stress and changes greatly with gas abnormal etc., therefore, deep-well complex structure heading driving Controlling of Coal Outburst is to need at present the technical barrier solved.The danger that structure type bump while occurring in tunnelling causes constantly increases, and the control of this class bump does not at present have the essence difference with the conventional method of preventing and treating, and mainly takes danger releasing measures, comprises the measures such as drilling and blasting release, boring release.Along with mining depth increases (generally being greater than 800 meters), these conventional measures are difficult to reach the purpose that reduces the danger of burst degree in itself, simultaneously due to the concealed characteristics that have structure, it is controlled difficulty and strengthens, and current means are poor to the releasing effect of tectonic stress, relief range is little, cause heavily stressed transfer not in place, energy discharges insufficient, bump is difficult to control, and the energy release that easily Occurrence level is larger, causes great loss.When there is anomalous structure with the dynamic region of high stress in tunnel, while implementing conventional drilling and blasting and boring release, solution danger effect is poor.Therefore the tunnelling bump under tectonic province, heavily stressed, large Conditions of Buried Depth is controlled, and does not up to the present also fundamentally reach the degree of controlling fully.Therefore, invent a kind of method for controlling tectonic rock burst in coal mine tunneling, there is Great significance.
Summary of the invention
The objective of the invention is, according to allowing pressure-diffusion principle, to propose a kind of method for controlling tectonic rock burst in coal mine tunneling, solve the problem that deep tunnel driving structure bump energy fully discharges.
Technical scheme of the present invention is:
The first step: delineation structure the rock burst fatalness area
In the tunneling process in the dangerous coal seam of bump, press analysis and the judgement of presentation attributes by analogy, roadway bump ground, the structural distribution situation simultaneously occurred according to driving, adopt the geostatic stress practical observation method, carry out earth stress observation, obtain the geostatic stress size and Orientation, then utilize drilling cuttings method monitoring means to carry out Site Detection, mark off the structure high stress areas, as the prevention emphasis zone of structure type bump.
Second step: allow and press and the grouted anchor bar supporting
Make a call to one at the back top of tunneling in above-mentioned prevention emphasis zone along the tunnel trend and arrange high strength and allow the pressure grouting anchor pole, anchor pole spacing 2-3m, the degree of depth are to the high stress areas border; When roof strata is soft rock, at first on back, adopt anchor net integer support, improve the top board second moment of area, and then beat and allow the pressure grouting anchor pole;
The described pressure grouting anchor pole structure of allowing is, is provided with at the head of steel pipe the afterbody that is provided with injected hole, steel pipe on anchor head, body and is provided with successively stop grouting plug, W steel band of model, allows pressure pipe, pallet, nut and grouting device; Wherein allow the pressure pressure that allows of pressure pipe be greater than the pressure pressure that allows of W steel band of model;
The 3rd step: when allowing the pressure grouting anchor pole once allow and to press and by allowing the pressure pipe secondary allow pressure by the W steel band of model, after the structural deformation energy is fully discharged, by allowing the grouting device of pressure grouting anchor pole afterbody, in connection, grouting pump carries out slip casting to the gap of structure realm, and broken rock is cured as to one;
The 4th step: back continues driving forward again after solidifying; During driving, then the roadway floor place is carried out to the loosening release explosion of routine, impel the tectonic stress of the roadway floor tunneled fully to discharge.
Good effect of the present invention is:
1, by the tunnel at structure realm middle part, high strength is installed and allows the pressure grouting anchor pole, can change the constraints of top board, be equivalent to reduce the width in tunnel, top board is after the release portion tectonic stress, buckling failure does not occur, and fundamentally reduces the structure type shock hazard.
2, adopt and allow the pressure grouting anchor pole carry out supporting, can effectively prevent that the anchor pole load that is hit from occurring disrumpent feelings, thereby reach supporting effect, allow the effect of pressing by the crooked tectonic stress that discharges in rock stratum, increase substantially the counter-bending ability of top board to reducing bump intensity, increase depth of stratum, stop the effect of tectonic stress.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, enforcement of the present invention is described.
Fig. 1 is that the present invention constructs hazardous area and supporting schematic top plan view;
Fig. 2 is that the present invention allows pressure grouting anchor structure schematic diagram;
Fig. 3 is the sectional schematic diagram of slip casting sealing of the present invention rock stratum.
The specific embodiment
The present invention specifically is implemented as follows:
The first step: in the tunneling process in the dangerous coal seam of bump, press analysis, the judgement of presentation attributes by analogy, roadway bump ground, the structural distribution situation simultaneously occurred according to driving, adopt the geostatic stress practical observation method, carry out earth stress observation, obtain the geostatic stress size and Orientation, then utilize drilling cuttings method monitoring means to carry out Site Detection, mark off the structure high stress areas, as the prevention emphasis zone of structure type bump;
According to the power of stress distribution, the delineation deathtrap, see the part shown in Fig. 1 the right.
Second step: make a call to one at the back top of tunneling in above-mentioned prevention emphasis zone along the tunnel trend and arrange high strength and allow the pressure grouting anchor pole, anchor pole spacing 2-3m, the degree of depth are to the high stress areas border; When roof strata is soft rock, at first on back, adopt anchor net integer support, improve the top board second moment of area, and then beat and allow the pressure grouting anchor pole; See the part shown in Fig. 1 left side.
Allow the pressure grouting anchor structure see Fig. 2.
The 3rd step: when allowing the pressure grouting anchor pole once allow and to press and by allowing the pressure pipe secondary allow pressure by the W steel band of model, after the structural deformation energy is fully discharged, by allowing the grouting device of pressure grouting anchor pole afterbody, in connection, grouting pump carries out slip casting to the gap of structure realm, sealing absciss layer, fissure zone, be cured as one by broken rock; As shown in Figure 3.
The 4th step: back continues driving forward again after solidifying; During driving, then the roadway floor place is carried out to the loosening release explosion of routine, impel the tectonic stress of the roadway floor tunneled fully to discharge.
Claims (1)
1. a method for controlling tectonic rock burst in coal mine tunneling, is characterized in that, step is as follows:
The first step: delineation structure the rock burst fatalness area
In the tunneling process in the dangerous coal seam of bump, press analysis and the judgement of presentation attributes by analogy, roadway bump ground, the structural distribution situation simultaneously occurred according to driving, adopt the geostatic stress practical observation method, carry out earth stress observation, obtain the geostatic stress size and Orientation, then utilize drilling cuttings method monitoring means to carry out Site Detection, mark off the structure high stress areas, as the prevention emphasis zone of structure type bump;
Second step: allow and press and the grouted anchor bar supporting
Make a call to one at the back top of tunneling in above-mentioned prevention emphasis zone along the tunnel trend and arrange high strength and allow the pressure grouting anchor pole, anchor pole spacing 2-3m, the degree of depth are to the high stress areas border; When roof strata is soft rock, at first on back, adopt anchor net integer support, improve the top board second moment of area, and then beat and allow the pressure grouting anchor pole;
The described pressure grouting anchor pole structure of allowing is, is provided with at the head of steel pipe the afterbody that is provided with injected hole, steel pipe on anchor head, body and is provided with successively stop grouting plug, W steel band of model, allows pressure pipe, pallet, nut and grouting device; Wherein allow the pressure pressure that allows of pressure pipe be greater than the pressure pressure that allows of W steel band of model;
The 3rd step: when allowing the pressure grouting anchor pole once allow and to press and by allowing the pressure pipe secondary allow pressure by the W steel band of model, after the structural deformation energy is fully discharged, by allowing the grouting device of pressure grouting anchor pole afterbody, in connection, grouting pump carries out slip casting to the gap of structure realm, and broken rock is cured as to one;
The 4th step: back continues driving forward again after solidifying; During driving, then the roadway floor place is carried out to the loosening release explosion of routine, impel the tectonic stress of the roadway floor tunneled fully to discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110378683.0A CN102518436B (en) | 2011-11-14 | 2011-11-14 | Method for controlling tectonic rock burst in coal mine tunneling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110378683.0A CN102518436B (en) | 2011-11-14 | 2011-11-14 | Method for controlling tectonic rock burst in coal mine tunneling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102518436A CN102518436A (en) | 2012-06-27 |
| CN102518436B true CN102518436B (en) | 2014-01-08 |
Family
ID=46289474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110378683.0A Expired - Fee Related CN102518436B (en) | 2011-11-14 | 2011-11-14 | Method for controlling tectonic rock burst in coal mine tunneling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102518436B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939099B (en) * | 2014-04-11 | 2016-02-03 | 中国矿业大学 | The prevention and controls of the dangerous coal seam group bump of a kind of thump |
| CN103939110A (en) * | 2014-05-07 | 2014-07-23 | 中铁第一勘察设计院集团有限公司 | Strengthening system for slight cracking of existing tunnel arch portion lining |
| CN106401588B (en) * | 2016-10-20 | 2019-05-17 | 山东科技大学 | Bump preventing control method during fault zone inner working face is exploited |
| CN106499393A (en) * | 2016-10-20 | 2017-03-15 | 山东科技大学 | Compound seam tunnel way of escape Controlling of Coal Outburst method |
| CN106368705A (en) * | 2016-10-20 | 2017-02-01 | 山东科技大学 | Method for controlling rock burst during roadway tunneling in fault fracture zone |
| CN106285680B (en) * | 2016-10-20 | 2018-07-20 | 山东科技大学 | Impact soft seam tunnel way of escape Controlling of Coal Outburst method |
| CN106522949A (en) * | 2016-10-20 | 2017-03-22 | 山东科技大学 | Composite coal seam tunnel head-on impact ground pressure control method |
| CN106401645B (en) * | 2016-11-03 | 2018-03-13 | 河南理工大学 | A kind of deep high stress tunnel pressure relief support control method for coordinating based on drilling release |
| CN107237646B (en) * | 2017-06-28 | 2019-04-26 | 山东科技大学 | Large deformation constant resistance supporting grouted anchor bar, anchor cable and tunnel quantify method for protecting support |
| CN109026070B (en) * | 2018-08-20 | 2020-07-28 | 中南大学 | Near-field stress regulation and control method for surrounding rock of deep-buried roadway cave |
| CN111075479B (en) * | 2019-12-30 | 2021-06-15 | 天地科技股份有限公司 | Stability control method for surrounding rock of roadway |
| CN112483150A (en) * | 2020-12-18 | 2021-03-12 | 山东科技大学 | Method for preventing and controlling rock burst of separation layer roadway |
| CN112483098A (en) * | 2020-12-18 | 2021-03-12 | 山东科技大学 | Method for preventing and treating rock burst of advanced broken roof of stope |
| CN113739983B (en) * | 2021-07-21 | 2024-01-12 | 安徽理工大学 | Pressure relief threshold detection device of self-discharging pressure formula stock |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2083831C1 (en) * | 1995-05-17 | 1997-07-10 | Научно-исследовательский институт горной геомеханики и маркшейдерского дела | Method for treatment of impact-risky seams in difficult mining and geological conditions |
| RU2083832C1 (en) * | 1995-09-26 | 1997-07-10 | Научно-исследовательский институт горной геомеханики и маркшейдерского дела "ВНИМИ" | Method for development of steep impact-risky seams |
| RU2163968C2 (en) * | 1999-06-01 | 2001-03-10 | Санкт-Петербургский государственный горный институт им. Г.В. Плеханова (Технический университет) | Method of cover caving |
| CN1804374A (en) * | 2006-01-06 | 2006-07-19 | 山东科技大学 | Method for preventing and controlling impact geopressure in longwall face gate of coal mine |
| CN101614130A (en) * | 2009-07-31 | 2009-12-30 | 抚顺矿业集团有限责任公司 | Method for preventing rock-burst of roadway support |
| CN101943013A (en) * | 2010-09-09 | 2011-01-12 | 中南大学 | Dynamic/static combined support method for rock burst of roadway |
| CN102220866A (en) * | 2011-04-17 | 2011-10-19 | 山东科技大学 | Pressure relief and consolidation synergizing prevention and control method for rock burst in deep coal drift |
-
2011
- 2011-11-14 CN CN201110378683.0A patent/CN102518436B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2083831C1 (en) * | 1995-05-17 | 1997-07-10 | Научно-исследовательский институт горной геомеханики и маркшейдерского дела | Method for treatment of impact-risky seams in difficult mining and geological conditions |
| RU2083832C1 (en) * | 1995-09-26 | 1997-07-10 | Научно-исследовательский институт горной геомеханики и маркшейдерского дела "ВНИМИ" | Method for development of steep impact-risky seams |
| RU2163968C2 (en) * | 1999-06-01 | 2001-03-10 | Санкт-Петербургский государственный горный институт им. Г.В. Плеханова (Технический университет) | Method of cover caving |
| CN1804374A (en) * | 2006-01-06 | 2006-07-19 | 山东科技大学 | Method for preventing and controlling impact geopressure in longwall face gate of coal mine |
| CN101614130A (en) * | 2009-07-31 | 2009-12-30 | 抚顺矿业集团有限责任公司 | Method for preventing rock-burst of roadway support |
| CN101943013A (en) * | 2010-09-09 | 2011-01-12 | 中南大学 | Dynamic/static combined support method for rock burst of roadway |
| CN102220866A (en) * | 2011-04-17 | 2011-10-19 | 山东科技大学 | Pressure relief and consolidation synergizing prevention and control method for rock burst in deep coal drift |
Non-Patent Citations (6)
| Title |
|---|
| 平顶山十一矿深部煤层冲击矿压防治技术;张友谊;《煤炭科学技术》;20060705(第07期);第38-40页 * |
| 张友谊.平顶山十一矿深部煤层冲击矿压防治技术.《煤炭科学技术》.2006,(第07期), |
| 惠功领等.高应力复合顶板巷道卸压让压耦合支护技术.《西安科技大学学报》.2010,第30卷(第4期),第412-415页. |
| 深井高应力复合顶板巷道卸压让压综合支护技术;陈喜恩等;《煤炭工程》;20080720(第07期);第62-63页 * |
| 陈喜恩等.深井高应力复合顶板巷道卸压让压综合支护技术.《煤炭工程》.2008,(第07期), |
| 高应力复合顶板巷道卸压让压耦合支护技术;惠功领等;《西安科技大学学报》;20100731;第30卷(第4期);第412-415页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102518436A (en) | 2012-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102518436B (en) | Method for controlling tectonic rock burst in coal mine tunneling | |
| WO2019227852A1 (en) | Fracture relieving method for stress concentration of pillar left in overlying goaf | |
| CN104533467B (en) | A kind of high artesian, the method for protecting support in fault disruption zone tunnel | |
| CN102536239B (en) | Long-wall working face coal pillar-free mining method | |
| CN109209472B (en) | Punching, blasting and water injection mutual coupling coal seam pressure relief and outburst prevention method | |
| CN111305876A (en) | Deep roadway anchoring-splitting grouting-hydraulic fracturing pressure relief cooperative control method | |
| WO2018201706A1 (en) | Method for efficient gas drainage in coal roadway strips and regional outburst elimination through staged fracturing with long borehole floor beddings | |
| CN110173264B (en) | Method for preventing and treating hard roof roadway rock burst through roof breakage and conventional pressure relief | |
| CN103557000B (en) | Method for preventing gob-side entry rock burst through side-drawing filling | |
| CN101915098A (en) | Method for preventing and controlling rock burst through hydraulic cutting | |
| CN107120137B (en) | A kind of coal roadway tunneling is along seat earth Deephole pre-splitting blasting pumping method | |
| CN105571419A (en) | Blasting method capable of effectively reducing blasting boulder yield of surface mine | |
| CN107304676A (en) | A kind of prevention and controls for leaving bump under coal column | |
| CN102383828A (en) | Refection reducing and outburst eliminating method for deep-hole hydraulic fracture driving gas shallow hole extraction | |
| CN102425418A (en) | Method for controlling rock burst in artificial defect body of coal mine structural area | |
| CN101608552A (en) | The seat earth aquifer reinforces and protects the method for water barrier in reinforcing process | |
| CN110374600A (en) | A kind of ultra close distance coal seam group stope drift active workings are error-free away from formula method for arranging | |
| CN106368705A (en) | Method for controlling rock burst during roadway tunneling in fault fracture zone | |
| WO2016150188A1 (en) | Method for fracturing filler wall left behind in adjacent coal-mining face | |
| CN102383728A (en) | Coal mine rockburst defect segmentation and control method | |
| CN102322267A (en) | Method for preventing and controlling rock burst in soft rock of deep well | |
| US11976557B2 (en) | Coal bump control method for sectional hydraulic fracturing regions of near vertical ultra thick coal seam | |
| CN115749713A (en) | Rock stratum frequency conversion pulse fracture network fracturing method and equipment | |
| CN106948817A (en) | Disconnected ground coal drilling combines the Controlling of Coal Outburst method of unloading pressure by blasting | |
| CN206205903U (en) | A kind of base plate release ruggedized construction of control deep tunnel bottom distension |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140108 Termination date: 20211114 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |