CN103321654B - The method of flexible air-bag process coal mine roadway roof collapse - Google Patents
The method of flexible air-bag process coal mine roadway roof collapse Download PDFInfo
- Publication number
- CN103321654B CN103321654B CN201310277012.4A CN201310277012A CN103321654B CN 103321654 B CN103321654 B CN 103321654B CN 201310277012 A CN201310277012 A CN 201310277012A CN 103321654 B CN103321654 B CN 103321654B
- Authority
- CN
- China
- Prior art keywords
- bag
- girder steel
- fall region
- flexible air
- roof fall
- 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
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000003245 coal Substances 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 32
- 239000010959 steel Substances 0.000 claims abstract description 32
- 238000010276 construction Methods 0.000 claims abstract description 10
- 238000007569 slipcasting Methods 0.000 claims abstract description 8
- 239000011435 rock Substances 0.000 claims abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000011440 grout Substances 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000005065 mining Methods 0.000 claims description 3
- 210000004911 serous fluid Anatomy 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/48—Chocks or the like
- E21D15/483—Chocks or the like made of flexible containers, e.g. inflatable, with or without reinforcement, e.g. filled with water, backfilling material or the like
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
A method for flexible air-bag process coal mine roadway roof collapse, in fall of ground processing procedure, needs empty top operation, ascend operation, construction safety is difficult to the problems such as guarantee, first below roof fall region, set up girder steel, temporary lining is provided, ensure the safety of operating area; On girder steel, place flexible air-bag afterwards and inflating pressure, ensure and connect top fast; Finally by the Grouting Pipe of constructing in advance to the slip casting of roof fall region, reinforce roof fall region and neighbouring country rock thereof, fast, safely, reliably process coal mine roadway roof collapse.Its method is simple, easy to operate, effective, for construction safety provides reliable guarantee.
Description
Technical field
The present invention relates to colliery treatment of roof collapse technical field, especially a kind of method of flexible air-bag process coal mine roadway roof collapse.
Background technology
Roof collapse is one of five large disasters of coal production, and roof fall region back is dealt with improperly, again collapsing of top board easily occurs and emits, and causes casualties and the damage of equipment, affects the safety in production in colliery.
At present, the method for home and abroad colliery process fall of ground mainly contains: Bolt net and jet note method, metallic support grillage method, wedging method etc.Three kinds of methods all need constructor's operation under the back of non-support for a long time, usual roof fall region back lithology is poor, loose crushing, self-bearing capacity are poor, roof fall again very easily occurs, causes secondary disaster, therefore the safety of constructor is difficult to ensure.Simultaneously when roof collapse is higher, need to set up scaffold and carry out ascend operation, complex procedures, construction speed is slow, further increases the insecurity of construction.The employing such as metallic support grillage method, wedging method timber carries out connecing to be determined, and it is unreal that existence connects top, and timber holds perishable problem in wet condition.Therefore a kind of simple, safe and reliable coal mine roadway roof collapse processing method is badly in need of.
Summary of the invention
Technical problem: the object of the invention is the deficiency overcome in prior art, provides a kind of simple to operate, the method for the flexible air-bag process coal mine roadway roof collapse of safety, fast processing fall of ground accident.
Technical scheme: the method for flexible air-bag process coal mine roadway roof collapse of the present invention, comprises the steps:
(1) set up many girder steels at roof fall region top board along tunnel axially spaced-apart, the length of girder steel is equal with span length, each employing shore supports below the two ends of girder steel;
(2) 1m place outside the top board of roof fall region, to roof fall region construction injected hole install Grouting Pipe;
(3) flexible air-bag is sent into roof fall region from girder steel interstitial spaces, on girder steel, mount wire lath afterwards, and to flexible air-bag inflating pressure, keep air pressure at 0.1 ~ 0.3MPa;
(4) on the complete girder steel of construction and wire lath, jet thickness is the concrete of 100 ~ 200mm, forms grouting layer;
(5) after concrete setting, carry out slip casting by Grouting Pipe to roof fall region and neighbouring country rock, when grouting pressure reaches 1.0 ~ 2.0MPa, after voltage stabilizing 3 ~ 5min, stop slip casting.
Spacing between many girder steels of described interval erection is 200-300mm; Described pillar is wood point post or hydraulic prop; The protruded length of described Grouting Pipe in roof fall region is 100 ~ 400mm, and the spacing between Grouting Pipe is 800 ~ 2000mm; The quantity of described flexible air-bag is determined according to the volume relationship of roof fall region and flexible air-bag; Described girder steel is mining channel-section steel or i iron; Described grouting serous fluid selects cement grout or chemical grout.
Beneficial effect: the present invention is directed in fall of ground processing procedure, need empty top operation, ascend operation, construction safety is difficult to the problems such as guarantee, first below roof fall region, sets up girder steel, provides temporary lining, ensures the safety of operating area; On girder steel, place flexible air-bag afterwards and inflating pressure, ensure and connect top fast; Finally by the Grouting Pipe of constructing in advance to the slip casting of roof fall region, reinforce roof fall region and neighbouring country rock thereof, fast, safely, reliably process coal mine roadway roof collapse.In whole work progress, do not need long-time operation under the top board of inbreak region, do not need ascend operation simultaneously, can fast, safe, reliably process coal mine roadway roof collapse.Its method is simple, and speed is fast, easy to operate, effective, has practicality widely in the art.
Accompanying drawing explanation
Fig. 1 is flexible air-bag process coal mine roadway roof collapse method schematic diagram of the present invention;
Fig. 2 is I-I sectional drawing of Fig. 1.
In figure: 1-tunnel, 2-Grouting Pipe, 3-girder steel, 4-roof fall region, 5-flexible air-bag, 6-wire lath, 7-pulp layer, 8-pillar.
Detailed description of the invention
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
Flexible air-bag process coal mine roadway roof collapse method of the present invention, concrete steps are as follows:
(1) set up many girder steels 3 at roof fall region 4 top board along tunnel 1 axially spaced-apart, girder steel 3 length is equal with tunnel 1 width, and girder steel spacing is 200-300mm, and described girder steel 3 is for commonly using channel-section steel or i iron in colliery; Below girder steel 3 two ends, each employing pillar 8 supports;
(2) 1m place outside the top board of roof fall region 4, injected hole of constructing to roof fall region 4, and Grouting Pipe 2 is installed; The protruded length of described Grouting Pipe 2 in roof fall region 4 is 100 ~ 400mm, and the spacing between Grouting Pipe 2 is 800 ~ 2000mm;
(3) flexible air-bag 5 is sent into roof fall region 4 from girder steel 3 interstitial spaces, flexible air-bag 5 quantity is determined according to the volume relationship of roof fall region and flexible air-bag 5, on girder steel 3, mount wire lath 6 afterwards, and to flexible air-bag 5 inflating pressure, keep air pressure at 0.1 ~ 0.3MPa; Described flexible air-bag 5 is mining flexible inflatable air bag;
(4) on the complete girder steel 3 of construction and wire lath 6, jet thickness is the concrete of 100 ~ 200mm, forms grouting layer 7;
(5) after concrete setting, carry out slip casting by Grouting Pipe 2 to roof fall region 4 and neighbouring country rock, grouting serous fluid selects cement grout or chemical grout, when grouting pressure reaches 1.0 ~ 2.0MPa, stop slip casting after voltage stabilizing 3 ~ 5min, complete the supporting in roof fall region 4.
Claims (1)
1. a method for flexible air-bag process coal mine roadway roof collapse, is characterized in that comprising the steps:
(1) many girder steels (3) are set up at roof fall region (4) top board along tunnel (1) axially spaced-apart, the length of girder steel (3) is equal with tunnel (1) width, girder steel spacing is 200-300mm, and described girder steel (3) is for commonly using channel-section steel or i iron in colliery; Below the two ends of girder steel (3), each employing pillar (8) supports;
(2) 1m place outside roof fall region (4) top board, to roof fall region (4) construction injected hole, and installs Grouting Pipe (2); Described Grouting Pipe (2) is 100 ~ 400mm at the protruded length of roof fall region (4), and the spacing between Grouting Pipe (2) is 800 ~ 2000mm;
(3) flexible air-bag (5) is sent into roof fall region (4) from girder steel (3) interstitial spaces, flexible air-bag (5) quantity is determined according to the volume relationship of roof fall region and flexible air-bag (5), wire lath (6) is mounted afterwards on girder steel (3), and to flexible air-bag (5) inflating pressure, keep air pressure at 0.1 ~ 0.3MPa; Described flexible air-bag 5 is mining flexible inflatable air bag;
(4) on the complete girder steel (3) of construction and wire lath (6), jet thickness is the concrete of 100 ~ 200mm, forms grouting layer (7);
(5) after concrete setting, carry out slip casting by Grouting Pipe (2) to roof fall region (4) and neighbouring country rock, when grouting pressure reaches 1.0 ~ 2.0MPa, after voltage stabilizing 3 ~ 5min, stop slip casting, complete the supporting in roof fall region 4;
Described pillar (8) is wood point post or hydraulic prop;
Described grouting serous fluid selects cement grout or chemical grout.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310277012.4A CN103321654B (en) | 2013-07-04 | 2013-07-04 | The method of flexible air-bag process coal mine roadway roof collapse |
| PCT/CN2013/081724 WO2015000210A1 (en) | 2013-07-04 | 2013-08-19 | Method for processing roof collapse of coal mine roadway by using flexible air bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310277012.4A CN103321654B (en) | 2013-07-04 | 2013-07-04 | The method of flexible air-bag process coal mine roadway roof collapse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103321654A CN103321654A (en) | 2013-09-25 |
| CN103321654B true CN103321654B (en) | 2016-02-24 |
Family
ID=49190671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310277012.4A Expired - Fee Related CN103321654B (en) | 2013-07-04 | 2013-07-04 | The method of flexible air-bag process coal mine roadway roof collapse |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103321654B (en) |
| WO (1) | WO2015000210A1 (en) |
Families Citing this family (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758533B (en) * | 2014-01-06 | 2015-12-30 | 中国矿业大学 | A kind of high-low pressure integratedization roadway grouting reinforcement means |
| CN103726859B (en) * | 2014-01-27 | 2015-10-07 | 河南理工大学 | Air filling type mine rubber support |
| CN104500090A (en) * | 2014-11-25 | 2015-04-08 | 兖州煤业股份有限公司 | Method for treating coal-mine roadway roof caving by roof filling through foam-material filler |
| CN104963688B (en) * | 2015-06-06 | 2017-01-18 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Prevention and control method for falling of pumice at roof and two slopes of stope in medium-long hole mining |
| CN105507927B (en) * | 2015-12-30 | 2017-11-17 | 中铁一局集团有限公司 | Air bag inner model mobile formwork and Tunnel construction of shotcrete method |
| CN106968676B (en) * | 2017-03-27 | 2019-12-17 | 山西潞安环保能源开发股份有限公司 | Method for tunneling through cavity |
| CN106884667A (en) * | 2017-04-07 | 2017-06-23 | 天津轨道交通集团有限公司 | A kind of section of jurisdiction supporting apparatus for shield tunnel accident rescue |
| CN107687348A (en) * | 2017-09-11 | 2018-02-13 | 开滦能源化工股份有限公司吕家坨矿业分公司 | With the method for flexible air-bag processing roof of coal face accident |
| CN107654238A (en) * | 2017-09-15 | 2018-02-02 | 中国矿业大学 | A kind of processing method for having dug fall of ground |
| CN108547653A (en) * | 2018-05-10 | 2018-09-18 | 天地科技股份有限公司 | A kind of Coupled Rigid-flexible roadway supporting system and method |
| CN109162759A (en) * | 2018-11-02 | 2019-01-08 | 榆林学院 | One kind being suitable for quick closing device and method by gob side entry retaining lane |
| CN109681242B (en) * | 2019-01-24 | 2024-02-23 | 内蒙古科技大学 | Hydraulic support forming device and method for treating roof-falling area of arch roadway |
| CN109653765B (en) * | 2019-02-12 | 2020-10-09 | 三峡大学 | Warehouse-separated lining pressure relief supporting structure and method for various fillers |
| CN109931077B (en) * | 2019-03-29 | 2021-12-24 | 中南大学 | Support system for tunnel repair and construction method thereof |
| CN109900549B (en) * | 2019-04-24 | 2024-02-06 | 龙岩学院 | Device for testing performance of coal mine air plugging material and application method thereof |
| CN110159316B (en) * | 2019-06-24 | 2023-08-22 | 河南理工大学 | Device and method for pocket filling roof protection of large-section ultra-high stope roadway |
| CN110219685B (en) * | 2019-07-08 | 2020-09-18 | 哈密豫新能源产业研究院有限责任公司 | Roof reinforcing grouting equipment and grouting method |
| CN111075476A (en) * | 2020-01-07 | 2020-04-28 | 安徽理工大学 | Machine-mounted roof fall processing robot of coal mining machine and construction method thereof |
| CN111305872B (en) * | 2020-03-10 | 2020-12-01 | 天津大学 | TBM shield tunnel segment and operation method thereof |
| CN111828061B (en) * | 2020-08-31 | 2021-07-09 | 济宁明顺达矿业机械制造有限公司 | Temporary reinforcing and supporting device for coal mine tunnel in coal mining excavation |
| CN112502772A (en) * | 2020-11-27 | 2021-03-16 | 安徽理工大学 | Goaf solid waste-ultrahigh water paste alternating filling method |
| CN112761690B (en) * | 2021-01-07 | 2022-08-02 | 安徽理工大学 | A gasbag protection canopy for tunnel supporting |
| CN113063710B (en) * | 2021-02-24 | 2022-11-08 | 上海市市政工程管理咨询有限公司 | Bridge crack measuring device for bridge engineering |
| CN113586053B (en) * | 2021-08-27 | 2022-04-12 | 东莞理工学院 | Trinity gob-side entry retaining gangue filling mining method |
| CN113790308B (en) * | 2021-08-27 | 2023-05-05 | 深圳大学 | Volume intelligent regulation and control air bag pile capable of reducing influence of back soil in pipe jacking construction and regulation and control method |
| CN114033449B (en) * | 2021-10-11 | 2024-02-27 | 中煤科工集团沈阳设计研究院有限公司 | End slope coal mining roadway air bag supporting device and method |
| CN114198119B (en) * | 2021-11-19 | 2023-11-17 | 中交路桥南方工程有限公司 | Tunnel roof-fall emergency treatment structure and construction method |
| CN115032367B (en) * | 2022-05-30 | 2023-09-22 | 山东东信塑胶科技有限公司 | Test method for realizing disaster simulation of collapse of soil body at lower part of buried pipeline |
| CN115354678B (en) * | 2022-09-30 | 2023-09-26 | 紫金(长沙)工程技术有限公司 | Mine high-steep side slope dangerous rock treatment method and device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2941072A1 (en) * | 1979-10-10 | 1981-04-30 | Chemische Fabrik Kalk GmbH, 5000 Köln | Cavity filling in mine gallery excavation - involves pneumatically backfilling space sealed by foil tubes after compressed air evacuation |
| SU1541400A1 (en) * | 1987-11-25 | 1990-02-07 | К.Ш. Акбаев, Н.М. Битимбаев, В.И. Габченко, Ю.Д. Орлов, Б.Ч. Севасть нов, К.М. Тельтаев, Г.С. Цой и П.И. Ханчу | Filling stopping |
| SU1566049A1 (en) * | 1988-03-15 | 1990-05-23 | Текелийский Свинцово-Цинковый Комбинат Им.50-Летия Октябрьской Революции | Method of erecting stowing dam |
| RU2188949C1 (en) * | 2001-06-18 | 2002-09-10 | Санкт-Петербургский государственный горный институт им. Г.В. Плеханова (Технический университет) | Method of protecting development workings in winning of coal seams |
| CN101280684A (en) * | 2008-05-12 | 2008-10-08 | 淮南矿业(集团)有限责任公司 | Goaf surrounding rock around gob-side supporting method under three soft geological condition |
| CN101725368A (en) * | 2009-11-28 | 2010-06-09 | 山东科技大学 | Thick seam large mining height working face gob-side entry retaining method |
| CN101864970A (en) * | 2010-01-29 | 2010-10-20 | 中国科学院武汉岩土力学研究所 | Method for supporting and protecting soft, collapsible and super thick coal seam tunnel based on filling behind support and device thereof |
| CN103061771A (en) * | 2012-12-20 | 2013-04-24 | 大同煤矿集团有限责任公司 | Remining mine fully-mechanized coal mining face open-off cut tunneling process and supporting method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA935645B (en) * | 1992-07-03 | 1994-04-14 | H L & H Timber Prod | Spacer assembly and method |
| US6196635B1 (en) * | 1998-02-17 | 2001-03-06 | Fosroc International Limited | Method of installation of cuttable mine support |
| JP4813348B2 (en) * | 2006-12-27 | 2011-11-09 | 京成電鉄株式会社 | Back filling method for buried pipes |
| WO2013069838A1 (en) * | 2011-11-11 | 2013-05-16 | Hyundai Engineering & Construction Co., Ltd. | Tunnel reinforcement struture and tunnel construction method capable of controlling ground displacement using pressurization |
-
2013
- 2013-07-04 CN CN201310277012.4A patent/CN103321654B/en not_active Expired - Fee Related
- 2013-08-19 WO PCT/CN2013/081724 patent/WO2015000210A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2941072A1 (en) * | 1979-10-10 | 1981-04-30 | Chemische Fabrik Kalk GmbH, 5000 Köln | Cavity filling in mine gallery excavation - involves pneumatically backfilling space sealed by foil tubes after compressed air evacuation |
| SU1541400A1 (en) * | 1987-11-25 | 1990-02-07 | К.Ш. Акбаев, Н.М. Битимбаев, В.И. Габченко, Ю.Д. Орлов, Б.Ч. Севасть нов, К.М. Тельтаев, Г.С. Цой и П.И. Ханчу | Filling stopping |
| SU1566049A1 (en) * | 1988-03-15 | 1990-05-23 | Текелийский Свинцово-Цинковый Комбинат Им.50-Летия Октябрьской Революции | Method of erecting stowing dam |
| RU2188949C1 (en) * | 2001-06-18 | 2002-09-10 | Санкт-Петербургский государственный горный институт им. Г.В. Плеханова (Технический университет) | Method of protecting development workings in winning of coal seams |
| CN101280684A (en) * | 2008-05-12 | 2008-10-08 | 淮南矿业(集团)有限责任公司 | Goaf surrounding rock around gob-side supporting method under three soft geological condition |
| CN101725368A (en) * | 2009-11-28 | 2010-06-09 | 山东科技大学 | Thick seam large mining height working face gob-side entry retaining method |
| CN101864970A (en) * | 2010-01-29 | 2010-10-20 | 中国科学院武汉岩土力学研究所 | Method for supporting and protecting soft, collapsible and super thick coal seam tunnel based on filling behind support and device thereof |
| CN103061771A (en) * | 2012-12-20 | 2013-04-24 | 大同煤矿集团有限责任公司 | Remining mine fully-mechanized coal mining face open-off cut tunneling process and supporting method |
Non-Patent Citations (1)
| Title |
|---|
| 煤矿巷道顶板事故原因分析及防治措施;钟训红等;《江西煤炭科技》;20070715(第3期);43-44 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015000210A1 (en) | 2015-01-08 |
| CN103321654A (en) | 2013-09-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103321654B (en) | The method of flexible air-bag process coal mine roadway roof collapse | |
| CN102425439B (en) | Method for reinforcing bidirectional staged stretched anchor cable of preset steel strand | |
| AU2015387618B2 (en) | Method for fracturing filler wall left behind in adjacent coal-mining face | |
| CN103195467B (en) | Hydraulic fracturing and grouting solidification combined rock cross-cut coal uncovering method | |
| CN105019924B (en) | Strong roof support pier column and method for protecting section coal pillar | |
| WO2013102309A1 (en) | Longwall working face, non-pillared mining method | |
| CN103306714B (en) | Gas control method for drilling hole and hole three-purpose in close-range coal seam group bottom drainage roadway | |
| CN105134216B (en) | Anti- slump structure by the engineering method lane of breaking roof 110 | |
| CN110130978B (en) | Method for plugging broken coal side of thick coal seam in broken area of filling and re-mining small kiln | |
| CN205025479U (en) | Administer bottom plate support system of soft rock tunnel pucking | |
| CN104847354B (en) | A kind of method that strip coal pillar performance is lifted using slip casting combined supporting anchor pole | |
| CN102979535A (en) | Drain-type pipe piece for tunnel lining | |
| CN104533483A (en) | Roadway total-space prestress truss, anchor cable and anchor rod coordinated supporting method | |
| CN105484763B (en) | A kind of semiclosed reinforced concrete segment method for protecting support of deep coalmine | |
| CN103806917A (en) | Vertical strip roadway tunneling method | |
| CN202851079U (en) | High water material filling column | |
| CN109779652A (en) | A kind of expansion of coal-mine soft-rock tailentry is repaired and method for protecting support | |
| CN106193047A (en) | Big width base pit stand construction | |
| WO2016112749A1 (en) | Non-coal-pillar gob-side entry retaining method having filling-wall self-elimination | |
| CN104405392B (en) | Three soft high seam tunnel jackings are kept on file anchor rete cord active support longwall top coal caving method | |
| CN206205903U (en) | A kind of base plate release ruggedized construction of control deep tunnel bottom distension | |
| CN102852532B (en) | Grouting method for preventing rib walk caving | |
| CN106194250A (en) | A kind of gob-side entry retaining concrete filling wall annular air-pocket template | |
| CN204040042U (en) | A kind of super large ultra-deep support with manually dug piles structure | |
| CN114183139B (en) | Control method and control device for influence of mining on working face |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160224 Termination date: 20160704 |