CN105626095A - Small coal pillar protection roadway surrounding rock support method under condition of coal seam group mining hard roof - Google Patents
Small coal pillar protection roadway surrounding rock support method under condition of coal seam group mining hard roof Download PDFInfo
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- CN105626095A CN105626095A CN201511002462.8A CN201511002462A CN105626095A CN 105626095 A CN105626095 A CN 105626095A CN 201511002462 A CN201511002462 A CN 201511002462A CN 105626095 A CN105626095 A CN 105626095A
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- anchor pole
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- 239000003245 coal Substances 0.000 title claims abstract description 26
- 238000005065 mining Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000011435 rock Substances 0.000 title claims abstract description 12
- 239000011347 resin Substances 0.000 claims description 36
- 229920005989 resin Polymers 0.000 claims description 36
- 238000004873 anchoring Methods 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- 239000003814 drug Substances 0.000 claims description 18
- 239000002360 explosive Substances 0.000 claims description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 238000003032 molecular docking Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 241000700608 Sagitta Species 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 210000003205 muscle Anatomy 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000012795 verification Methods 0.000 abstract description 3
- 238000004458 analytical method Methods 0.000 abstract description 2
- 238000011835 investigation Methods 0.000 abstract 1
- 238000011161 development Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000009423 ventilation 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
- E21D11/006—Lining anchored in the rock
-
- 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
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/152—Laggings made of grids or nettings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/025—Grouting with organic components, e.g. resin
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0006—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by the bolt material
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/008—Anchoring or tensioning means
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)
- Civil Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Wire Processing (AREA)
Abstract
The invention provides a small coal pillar protection roadway surrounding rock support method under the condition of a coal seam group mining hard roof. According to the method, analytical investigation is conducted for the Jurassic system coal seam gob-side entry driving technology, the gob-side entry support mode and bolt support parameters are optimized through a large amount of theoretical analysis and unceasing experimental verification, a small coal pillar protection roadway is preserved under the condition of the coal seam group mining hard roof, the bad stress environment of gob-side entry surrounding rock is improved, deformation of gob-side entry surrounding rock of the working face is reduced, mining pressure accidents such as roof caving and wall caving are reduced, and guarantees are provided for safe and efficient production of mines.
Description
Technical field
The present invention relates to a kind of laneway support method, specifically Coal mine goaf surrounding rock supporting method under the hard hard top plate condition of a kind of coal seam group mining.
Background technology
In recent years, a large amount of human and material resources are constantly dropped in national each mining area, the support issues of entry have been carried out a large amount of research and practice so that bolt support technology there has been large development in solid-coal roadway, and obtains immense success. But the coal column in adjacent empty tunnel stay establish, adjacent empty roadway support, spontaneous fire control etc. in the progress of still achieving no breakthrough property, the technology of entity coal road is continued to use in supporting, the width of section coal pillar and the application of bolt design parameters are unreasonable, ore deposit pressure is caused to manifest excessive, entry distortion is very serious, causing working face ventilation system not smooth, gas problem and spontaneous fire hidden danger are all come thereupon, seriously affect the safe and efficient production of working face.
Summary of the invention
It is an object of the invention to solve above-mentioned problems of the prior art, and Coal mine goaf surrounding rock supporting method under the hard hard top plate condition of a kind of coal seam group mining is provided.
The present invention is achieved through the following technical solutions:
Coal mine goaf surrounding rock supporting method under the hard hard top plate condition of a kind of coal seam group mining, comprises the steps:
1) roof timbering
Metal grill: mesh sheet specification 3800mm �� 2200mm, is made up of 8# iron wire, mesh specification 50mm �� 50mm, adopting docking mode to connect between mesh sheet, docking length is 200mm, and lap-joint uses hole, 14# galvanized wire hole to be connected, the two button of mariages, ties up dead kink and is no less than 3 circles;
Reinforcing bar joist: bar diameter 16mm, joist length is 3700mm;
Pallet: adopt 150mm �� 150mm �� 12mm butterfly pallet, it is desired to sagitta is not less than 36mm, increases antifriction packing ring between torque nut and pallet;
Anchor pole: anchor pole adopts the vertical muscle left hand thread steel anchor rod of the high-strength nothing of �� 22mm �� 2200mm, and material quality of bolt is not less than HRB400; Between anchor pole, array pitch is 850mm �� 800mm, and drift angle rockbolt installation angle becomes 15 �� with vertical direction, and all the other anchor poles and top board are arranged vertically; Anchoring agent adopts two resin explosive roll anchoring agent, a joint rapid resin medicine volume MSK2360, a joint middling speed resin explosive roll MSZ2360, and rapid resin medicine is provided at front end; Pre-fastening moment is not less than 300N m;
Anchor cable: anchor cable adopts �� 21.8mm �� 6000mm, unit elongation >=7%, 1 �� 19 prestress wire anchor cable; Anchor cable number is arranged by the mode of 2-3-2, the array pitch of anchor cable is 1600mm, the cable interval of two anchor cable rows is 1600mm, the cable interval of three anchor cable rows is 800mm, the installation angle of anchor cable is arranged vertically (that is: the anchor cable row that anchor cable row divides for the anchor cable being made up of two anchor cables row and is made up of three anchor cables, and two anchor cable rows are arranged alternately with three anchor cable rows, often arrange anchor cable and it is located between two adjacent row's anchor poles, between two adjacent row's anchor cables, have two row's anchor poles); Anchor cable supporting plate adopts the cydariform supporting plate of 300mm �� 300mm �� 16mm, and bulge height is not less than 150mm; Anchoring agent adopts three resin explosive roll anchoring agent, a joint rapid resin medicine volume MSK2360, two joint middling speed resin explosive roll MSZ2360, and rapid resin medicine is provided at front end; Preliminary tension is not less than 120kN;
2) roadside support
Metal grill: mesh sheet specification 3500mm �� 2200mm, is made up of 8# iron wire, mesh specification 50mm �� 50mm, adopting docking mode to connect between mesh sheet, docking length is 200mm, and lap-joint uses hole, 14# galvanized wire hole to be connected, the two button of mariages, ties up dead kink and is no less than 3 circles;
Reinforcing bar joist: bar diameter 14mm, joist length is 2300mm;
Pallet: adopt 150mm �� 150mm �� 12mm butterfly pallet, it is desired to sagitta is not less than 36mm, increases antifriction packing ring between torque nut and pallet;
Anchor pole: anchor pole adopts the vertical muscle left hand thread steel anchor rod of the high-strength nothing of �� 22mm �� 2200mm, and material quality of bolt is not less than HRB400; Between anchor pole, array pitch is 700mm �� 800mm, and drift angle anchor pole becomes 15 �� with the installation angle of FLOOR ANCHOR with horizontal direction angle, and all the other anchor poles and lane side are arranged vertically; Anchoring agent adopts two resin explosive roll anchoring agent, a joint rapid resin medicine volume MSK2360, a joint middling speed resin explosive roll MSZ2360, and rapid resin medicine is provided at front end; Pre-fastening moment is not less than 300N m.
The present invention be directed to Datong seam group gob-side entry driving technology to have carried out analyzing research, through a large amount of theoretical analysises and continuous verification experimental verification, gob-side entry supporting mode and Bolting Parameters are optimized, stay under achieving the hard hard top plate condition of coal seam group mining and establish Coal mine goaf, improve the severe ambient stress of gob-side entry country rock, reduce the distortion of working face gob-side entry country rock, reduce the generation of the ore deposit such as roof fall, wall caving pressure accident, for the safe and efficient production of mine provides guarantee. The present invention has promoted the development in an all-round way of seam mining technology further, and the aspects such as the supporting of fully-mechanized mining working gob-side entry driving, the raising of exploiting field back production rate is all significant. Improve the rate of recovery of Jurassic coal, extend [underground, maintenance mining area is flourishing, development and stabilization are significant, and this technology can be promoted in whole mining area.
Accompanying drawing explanation
Fig. 1 is the sectional view in tunnel after the inventive method supporting.
Fig. 2 is top board schematic diagram after the inventive method supporting.
Fig. 3 is the inventive method supporting rear lane side schematic diagram.
Fig. 4 is reinforcing bar joist structure schematic diagram in the inventive method.
In figure: 1-metal grill, 2-reinforcing bar joist, 3-pallet, 4-anchor pole, 5-anchor cable, 6-anchor cable supporting plate.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
Coal mine goaf surrounding rock supporting method under the hard hard top plate condition of a kind of coal seam group mining, comprises the steps:
1) roof timbering
Metal grill 1: mesh sheet specification 3800mm �� 2200mm, is made up of 8# iron wire, mesh specification 50mm �� 50mm, adopting docking mode to connect between mesh sheet, docking length is 200mm, and lap-joint uses hole, 14# galvanized wire hole to be connected, the two button of mariages, ties up dead kink and is no less than 3 circles;
Reinforcing bar joist 2: bar diameter 16mm, joist length is 3700mm;
Pallet 3: adopt 150mm �� 150mm �� 12mm butterfly pallet, it is desired to sagitta is not less than 36mm, increases antifriction packing ring between torque nut and pallet;
Anchor pole 4: anchor pole 4 adopts the vertical muscle left hand thread steel anchor rod of the high-strength nothing of �� 22mm �� 2200mm, and anchor pole 4 material is not less than HRB400; Between anchor pole 4, array pitch is 850mm �� 800mm, and drift angle anchor pole 4 is installed angle and become 15 �� with vertical direction, and all the other anchor poles 4 are arranged vertically with top board; Anchoring agent adopts two resin explosive roll anchoring agent, a joint rapid resin medicine volume MSK2360, a joint middling speed resin explosive roll MSZ2360, and rapid resin medicine is provided at front end; Pre-fastening moment is not less than 300N m;
Anchor cable 5: anchor cable 5 adopts �� 21.8mm �� 6000mm, unit elongation >=7%, 1 �� 19 prestress wire anchor cable; Anchor cable 5 number is arranged by the mode of 2-3-2, and the array pitch of anchor cable 5 is 1600mm, and anchor cable 5 spacing of two anchor cable rows is 1600mm, and anchor cable 5 spacing of three anchor cable rows is 800mm, and the installation angle of anchor cable 5 is arranged vertically with top board; Anchor cable supporting plate 6 adopts the cydariform supporting plate of 300mm �� 300mm �� 16mm, and bulge height is not less than 150mm; Anchoring agent adopts three resin explosive roll anchoring agent, a joint rapid resin medicine volume MSK2360, two joint middling speed resin explosive roll MSZ2360, and rapid resin medicine is provided at front end; Preliminary tension is not less than 120kN;
2) roadside support
Metal grill 1: mesh sheet specification 3500mm �� 2200mm, is made up of 8# iron wire, mesh specification 50mm �� 50mm, adopting docking mode to connect between mesh sheet, docking length is 200mm, and lap-joint uses hole, 14# galvanized wire hole to be connected, the two button of mariages, ties up dead kink and is no less than 3 circles;
Reinforcing bar joist 2: bar diameter 14mm, joist length is 2300mm;
Pallet 3: adopt 150mm �� 150mm �� 12mm butterfly pallet, it is desired to sagitta is not less than 36mm, increases antifriction packing ring between torque nut and pallet;
Anchor pole 4: anchor pole 4 adopts the vertical muscle left hand thread steel anchor rod of the high-strength nothing of �� 22mm �� 2200mm, and anchor pole 4 material is not less than HRB400; Between anchor pole 4, array pitch is 700mm �� 800mm, and drift angle anchor pole 4 becomes 15 �� with the installation angle of FLOOR ANCHOR 4 with horizontal direction angle, and all the other anchor poles 4 are arranged vertically with lane side; Anchoring agent adopts two resin explosive roll anchoring agent, a joint rapid resin medicine volume MSK2360, a joint middling speed resin explosive roll MSZ2360, and rapid resin medicine is provided at front end; Pre-fastening moment is not less than 300N m.
Claims (1)
1. Coal mine goaf surrounding rock supporting method under the hard hard top plate condition of coal seam group mining, it is characterised in that, comprise the steps:
1) roof timbering
Metal grill (1): mesh sheet specification 3800mm �� 2200mm, is made up of 8# iron wire, mesh specification 50mm �� 50mm, adopting docking mode to connect between mesh sheet, docking length is 200mm, and lap-joint uses hole, 14# galvanized wire hole to be connected, the two button of mariages, ties up dead kink and is no less than 3 circles;
Reinforcing bar joist (2): bar diameter 16mm, joist length is 3700mm;
Pallet (3): adopt 150mm �� 150mm �� 12mm butterfly pallet, it is desired to sagitta is not less than 36mm, increases antifriction packing ring between torque nut and pallet;
Anchor pole (4): anchor pole (4) adopts the vertical muscle left hand thread steel anchor rod of the high-strength nothing of �� 22mm �� 2200mm, and anchor pole (4) material is not less than HRB400; Between anchor pole (4), array pitch is 850mm �� 800mm, and drift angle anchor pole (4) is installed angle and become 15 �� with vertical direction, and all the other anchor poles (4) and top board are arranged vertically; Anchoring agent adopts two resin explosive roll anchoring agent, a joint rapid resin medicine volume MSK2360, a joint middling speed resin explosive roll MSZ2360, and rapid resin medicine is provided at front end; Pre-fastening moment is not less than 300N m;
Anchor cable (5): anchor cable (5) adopts �� 21.8mm �� 6000mm, unit elongation >=7%, 1 �� 19 prestress wire anchor cable; Anchor cable (5) number is arranged by the mode of 2-3-2, and the array pitch of anchor cable (5) is 1600mm, and anchor cable (5) spacing of two anchor cable rows is 1600mm, and anchor cable (5) spacing of three anchor cable rows is 800mm, and the installation angle of anchor cable (5) is arranged vertically with top board; Anchor cable supporting plate (6) adopts the cydariform supporting plate of 300mm �� 300mm �� 16mm, and bulge height is not less than 150mm; Anchoring agent adopts three resin explosive roll anchoring agent, a joint rapid resin medicine volume MSK2360, two joint middling speed resin explosive roll MSZ2360, and rapid resin medicine is provided at front end; Preliminary tension is not less than 120kN;
2) roadside support
Metal grill (1): mesh sheet specification 3500mm �� 2200mm, is made up of 8# iron wire, mesh specification 50mm �� 50mm, adopting docking mode to connect between mesh sheet, docking length is 200mm, and lap-joint uses hole, 14# galvanized wire hole to be connected, the two button of mariages, ties up dead kink and is no less than 3 circles;
Reinforcing bar joist (2): bar diameter 14mm, joist length is 2300mm;
Pallet (3): adopt 150mm �� 150mm �� 12mm butterfly pallet, it is desired to sagitta is not less than 36mm, increases antifriction packing ring between torque nut and pallet;
Anchor pole (4): anchor pole (4) adopts the vertical muscle left hand thread steel anchor rod of the high-strength nothing of �� 22mm �� 2200mm, and anchor pole (4) material is not less than HRB400; Between anchor pole (4), array pitch is 700mm �� 800mm, and drift angle anchor pole (4) becomes 15 �� with the installation angle of FLOOR ANCHOR (4) with horizontal direction angle, and all the other anchor poles (4) are arranged vertically with lane side; Anchoring agent adopts two resin explosive roll anchoring agent, a joint rapid resin medicine volume MSK2360, a joint middling speed resin explosive roll MSZ2360, and rapid resin medicine is provided at front end; Pre-fastening moment is not less than 300N m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511002462.8A CN105626095B (en) | 2015-12-29 | 2015-12-29 | Coal mine goaf surrounding rock supporting method under the conditions of coal seam group mining tight roof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511002462.8A CN105626095B (en) | 2015-12-29 | 2015-12-29 | Coal mine goaf surrounding rock supporting method under the conditions of coal seam group mining tight roof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105626095A true CN105626095A (en) | 2016-06-01 |
| CN105626095B CN105626095B (en) | 2018-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201511002462.8A Expired - Fee Related CN105626095B (en) | 2015-12-29 | 2015-12-29 | Coal mine goaf surrounding rock supporting method under the conditions of coal seam group mining tight roof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121684A (en) * | 2016-08-17 | 2016-11-16 | 国投新集能源股份有限公司 | A kind of jacking coal and rock suspension device and construction method thereof |
| CN106761813A (en) * | 2017-01-23 | 2017-05-31 | 山东科技大学 | Gob side entry driving unbalanced support method for designing under the unstable overlying strata in deep |
| CN110792463A (en) * | 2019-11-11 | 2020-02-14 | 大同煤矿集团有限责任公司 | Reinforcing method for machine path leakage top of working surface under complex conditions |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1693670A (en) * | 2005-05-19 | 2005-11-09 | 中国矿业大学 | Three-anchor coupling supporting method for high stress tunnel break wall rock |
| CN201902218U (en) * | 2010-12-17 | 2011-07-20 | 神华集团有限责任公司 | Anchor rod and anchor cable supporting device |
| CN102182483A (en) * | 2011-04-26 | 2011-09-14 | 山东大学 | Semi-rigid abnormal beam anchor cable truss roadway supporting system |
| CN202064981U (en) * | 2011-05-07 | 2011-12-07 | 山西晋城无烟煤矿业集团有限责任公司 | Soft coal layer roadway supporting structure |
| CN102733832A (en) * | 2012-07-05 | 2012-10-17 | 大同煤矿集团有限责任公司 | Support method for extra-thick broken coal seam employing nest anchored ropes |
| CN102733836A (en) * | 2012-07-05 | 2012-10-17 | 大同煤矿集团有限责任公司 | Roadway support method for fully mechanized caving mining of weak extra-thick coal seam |
-
2015
- 2015-12-29 CN CN201511002462.8A patent/CN105626095B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1693670A (en) * | 2005-05-19 | 2005-11-09 | 中国矿业大学 | Three-anchor coupling supporting method for high stress tunnel break wall rock |
| CN201902218U (en) * | 2010-12-17 | 2011-07-20 | 神华集团有限责任公司 | Anchor rod and anchor cable supporting device |
| CN102182483A (en) * | 2011-04-26 | 2011-09-14 | 山东大学 | Semi-rigid abnormal beam anchor cable truss roadway supporting system |
| CN202064981U (en) * | 2011-05-07 | 2011-12-07 | 山西晋城无烟煤矿业集团有限责任公司 | Soft coal layer roadway supporting structure |
| CN102733832A (en) * | 2012-07-05 | 2012-10-17 | 大同煤矿集团有限责任公司 | Support method for extra-thick broken coal seam employing nest anchored ropes |
| CN102733836A (en) * | 2012-07-05 | 2012-10-17 | 大同煤矿集团有限责任公司 | Roadway support method for fully mechanized caving mining of weak extra-thick coal seam |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121684A (en) * | 2016-08-17 | 2016-11-16 | 国投新集能源股份有限公司 | A kind of jacking coal and rock suspension device and construction method thereof |
| CN106121684B (en) * | 2016-08-17 | 2018-11-30 | 国投新集能源股份有限公司 | A kind of construction method of jacking coal and rock suspension device |
| CN106761813A (en) * | 2017-01-23 | 2017-05-31 | 山东科技大学 | Gob side entry driving unbalanced support method for designing under the unstable overlying strata in deep |
| CN106761813B (en) * | 2017-01-23 | 2018-04-06 | 山东科技大学 | Gob side entry driving unbalanced support design method under the unstable overlying strata in deep |
| CN110792463A (en) * | 2019-11-11 | 2020-02-14 | 大同煤矿集团有限责任公司 | Reinforcing method for machine path leakage top of working surface under complex conditions |
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| Publication number | Publication date |
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| CN105626095B (en) | 2018-02-23 |
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Effective date of registration: 20190924 Address after: 037000 Yangjiayao Village, Southern Suburb of Datong City, Shanxi Province Patentee after: DATONG COAL MINE TASHAN COAL MINE CO., LTD. Address before: 037003 Shanxi province Datong Xinping Wang School North Patentee before: Datong Coal Mine Group Co., Ltd. |
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