US20180195386A1 - Parallel digging, mining and filling operation coal mining method for controlling overlaying strata fracture and surface subsidence - Google Patents

Parallel digging, mining and filling operation coal mining method for controlling overlaying strata fracture and surface subsidence Download PDF

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Publication number
US20180195386A1
US20180195386A1 US15/025,525 US201515025525A US2018195386A1 US 20180195386 A1 US20180195386 A1 US 20180195386A1 US 201515025525 A US201515025525 A US 201515025525A US 2018195386 A1 US2018195386 A1 US 2018195386A1
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Prior art keywords
stope
roadway
winged
mining
adits
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US15/025,525
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English (en)
Inventor
Liqiang MA
Qiankun Miao
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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Assigned to CHINA UNIVERSITY OF MINING AND TECHNOLOGY reassignment CHINA UNIVERSITY OF MINING AND TECHNOLOGY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MA, Liqiang, MIAO, Qiankun
Publication of US20180195386A1 publication Critical patent/US20180195386A1/en
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C41/00—Methods of underground or surface mining; Layouts therefor
    • E21C41/16—Methods of underground mining; Layouts therefor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00—Methods or devices for placing filling-up materials in underground workings

Definitions

  • the present invention relates to a coal mining method, belongs to the field of coal mining technology, and particularly relates to a parallel digging, mining arid filling operation coal mining method for controlling overlaying strata fracture and surface subsidence.
  • Water-preserved mining refers to mining by a reasonable coal mining method and process, so as to ensure the mining disturbance will not cause damage to the water-bearing structure in the water bearing strata; or ensure the water level in the water bearing strata can recover within a certain time period though the water-bearing structure is damaged to some degree and some water loss occurs; or ensure the normal water supply will not be affected and at least the water supply can meet the demand of the ground ecosystem for water resource even though the underground water level can't recover to the original level.
  • Coordinated mining utilizes the counter balancing among surface deformations resulted from simultaneous mining at multiple working faces to attain the purpose of reducing surface deformation, but it involves simultaneous mining at multiple working faces and is constrained by the layout of protected objects on the ground surface; therefore, it has severe impacts on the exploitation design and has limited applicability.
  • Partial mining controls overlaying strata movement and surface subsidence by mining coal partially and reserving permanent coal pillars in certain width, and mainly includes Wongawilli mining, board and pillar mining, strip mining, limited thickness mining, knife mining, and roadway mining, etc. Though these methods can control surface subsidence to some degree, their mining ratios are not high, usually about 50%.
  • Grouting into separated strata in overburden utilizes bore grouting to fill the space of separated strata between upper hard strata and lower soft strata, to attain the purpose of controlling the overlying bed subsidence above the hard strata and the surface subsidence; with that method, the surface subsidence reduction ratio is usually not higher than 40%.
  • mining with filling is the most effective method for controlling surface subsidence at present, and the gob can be filled partially or fully.
  • the filling method can be gob filling along long-wall working face, strip filling, or roadway filling, etc.
  • the problems existing in these methods mainly include: difficulties in coordination between coal mining and filling, complex filling system, large filling space, and long filling time, etc.
  • the parallel digging, mining and filling operation coal mining method for controlling overlaying strata fracture and surface subsidence comprises the following steps:
  • the included angle ⁇ between the direction perpendicular to stope branch roadway and the adit is determined according to the requirement of the working angle of the coal mining equipment; the width of each two-winged adit is equal to the working width of the coal mining equipment; the distance L between adjacent stope branch roadways at the same side of the stope haulage roadway is determined with a formula L ⁇ L 1 +2L 2 cos ⁇ , where, L 1 is the width of a stope branch roadway, and L 2 is the length of an adit.
  • stope branch roadways and two-winged adits are arranged, the two-winged adit and the corresponding section of the stope branch roadway are referred to as a stage, sealing walls are built in the stope branch roadway after multiple stages of mining is completed, and the two-winged adits are filled uniformly, to minimize the quantity of the sealing walls.
  • the stope branch roadways are used as main haulage passages, and the coal mining work is carried out in the two-winged adits; the two-winged adits are filled timely, and two-winged adits that have not been mined or have been filled are utilized as roof supports, and the length of two-winged adits is controlled to eliminate the requirement for supporting; after the filling mass meets the strength requirement, the two-winged adits that have not been mined in the reserved coal pillars are mined with the same method, so that the coal is replaced by the filling mass.
  • the coal mining method provided in the present invention overcomes the drawbacks in the existing coal mining method for mining the coal under constructions, railroads, and water bodies, such as low recovery ratio, difficulties in coordination between mining and filling, and complex production system, etc., realizes safe and efficient recovery of the coal under constructions, railroads, and water bodies while preserving the water resources, and can effectively control overlaying strata fractures and surface subsidence.
  • the method enables synchronous and coordinated coal mining and filling, attains a high recovery ratio, achieves a good surface subsidence control effect, and realizes safe and efficient water-preserved coal mining through parallel digging, mining and filling operation while effectively controlling overlaying strata fractures and surface subsidence.
  • the method is simple, can realize a high coal recovery ratio and a good surface subsidence control effect, and has wide practicability.
  • FIG. 1 is a schematic diagram of first stage mining along the first stope branch roadway I at one side of the stope haulage roadway I ( 1 ) in the present invention
  • FIG. 2 is a schematic diagram of second stage mining along the first stope branch roadway I at one side of the stope haulage roadway I ( 1 ) in the present invention
  • FIG. 3 is a schematic diagram of third stage mining along the first stope branch roadway I at one side of the stope haulage roadway I ( 1 ) in the present invention
  • FIG. 4 is a schematic diagram of filling for the first time in the first stope branch roadway I at one side of the stope haulage roadway I ( 1 ) in the present invention
  • FIG. 5 is a schematic diagram of filling for the second time in the first stope branch roadway I at one side of the stope haulage roadway I ( 1 ) in the present invention
  • FIG. 6 is a schematic diagram after the first stope branch roadway I at one side of the stope haulage roadway I ( 1 ) is filled in the present invention
  • FIG. 7 is a schematic diagram after the second stope branch roadway I at one side of the stope haulage roadway I ( 1 ) is filled in the present invention
  • FIG. 8 is a schematic diagram after the first stope branch roadway II at one side of the stope haulage roadway II ( 7 ) is dug in the present invention
  • FIG. 9 is a schematic diagram after all stope branch roadways I at one side of the stope haulage roadway I ( 1 ) are filled in the present invention.
  • FIG. 10 is a schematic diagram after the second stage mining along the first stope branch roadway II at one side of the stope haulage roadway II ( 7 ) is completed in the present invention
  • FIG. 11 is a schematic diagram after the third stage mining along the first stope branch roadway II at one side of the stope haulage roadway II ( 7 ) is completed in the present invention
  • FIG. 12 is a schematic diagram after the filling for the first time in the first stope branch roadway II at one side of the stope haulage roadway II ( 7 ) is completed in the present invention
  • FIG. 13 is a schematic diagram after the filling for the second time in the first stope branch roadway II at one side of the stope haulage roadway II ( 7 ) is completed in the present invention
  • FIG. 14 is a schematic diagram after the first stope branch roadway II at one side of the stope haulage roadway II ( 7 ) is filled in the present invention
  • FIG. 15 is a schematic diagram after the working face is mined and filled in the present invention.
  • FIG. 16 is a schematic diagram of the method provided in the present invention.
  • 1 , 6 stope haulage roadway
  • 2 , 7 stope branch roadway
  • 3 two-winged adit
  • 4 sealing wall
  • 5 filling mass
  • 8 triangular coal.
  • the parallel digging, mining and filling operation coal mining method for controlling overlaying strata fracture and surface subsidence includes the following steps:
US15/025,525 2014-11-13 2015-05-12 Parallel digging, mining and filling operation coal mining method for controlling overlaying strata fracture and surface subsidence Abandoned US20180195386A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201410643437.7 2014-11-13
CN201410643437.7A CN104481536B (zh) 2014-11-13 2014-11-13 控制覆岩裂隙与地表沉陷的掘采充平行作业的采煤方法
PCT/CN2015/078725 WO2016074456A1 (zh) 2014-11-13 2015-05-12 控制覆岩裂隙与地表沉陷的掘采充平行作业的采煤方法

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US (1) US20180195386A1 (zh)
CN (1) CN104481536B (zh)
AU (1) AU2015345830B2 (zh)
WO (1) WO2016074456A1 (zh)

Cited By (6)

* Cited by examiner, † Cited by third party
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CN109798116A (zh) * 2019-04-04 2019-05-24 中国矿业大学(北京) 实现双翼布置工作面的采区或带区完全无煤柱的方法
CN111750822A (zh) * 2019-10-31 2020-10-09 河南理工大学 一种采煤诱发的覆岩与地表沉陷协同动态预测方法
CN114320298A (zh) * 2022-01-05 2022-04-12 国家能源集团国源电力有限公司 采煤方法
CN114562330A (zh) * 2022-04-02 2022-05-31 中国矿业大学 覆岩隔离注浆充填浆液扩散范围控制方法
CN114991858A (zh) * 2022-05-20 2022-09-02 中国矿业大学 基于充填采场稳定的最大滞后充填距离确定方法
US20240102343A1 (en) * 2021-08-30 2024-03-28 China University Of Mining And Technology Isolated overburden grouting filling method for coal gangue underground emission reduction

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CN104481536B (zh) * 2014-11-13 2017-02-08 中国矿业大学 控制覆岩裂隙与地表沉陷的掘采充平行作业的采煤方法
CN106150535A (zh) * 2016-07-02 2016-11-23 河南理工大学 一种条带式旺格维利采煤技术支巷支护方法
CN106522948A (zh) * 2016-11-25 2017-03-22 山东科技大学 一种短壁矸石胶结连采连充采煤法
CN108412494B (zh) * 2018-03-05 2019-03-29 乌海市天裕工贸有限公司 一种长臂纵向条带式膏体充填回采工艺
CN113982580A (zh) * 2021-10-18 2022-01-28 兖州煤业股份有限公司 一种拼图充填采煤的方法

Family Cites Families (9)

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RU2123109C1 (ru) * 1996-04-29 1998-12-10 Акционерное общество "Угольная компания "Прокопьевскуголь" Способ разработки свиты угольных пластов в приконтурных зонах карьера
RU2364722C1 (ru) * 2008-04-16 2009-08-20 Государственное образовательное учреждение высшего профессионального образования "Сибирский государственный индустриальный университет" Способ разработки мощных крутых пластов с литой твердеющей закладкой
CN102392643B (zh) * 2011-11-17 2014-01-15 中国矿业大学 一种建筑物下充填开采回收煤柱的方法
CN102587914A (zh) * 2012-03-19 2012-07-18 河南理工大学 一种建筑物下压煤条带式旺格维利采煤方法
CN103174424B (zh) * 2012-11-27 2015-07-15 河南理工大学 一种长壁布置下的房柱式采煤法
CN103696771B (zh) * 2013-12-18 2015-06-10 中国矿业大学 一种跳采式旺格维利采场支巷充填采煤方法
CN103821515B (zh) * 2014-02-20 2016-05-04 山西晋煤集团技术研究院有限责任公司 一种对拉工作面充填采煤工艺
CN103883350B (zh) * 2014-04-04 2016-04-27 山东科技大学 一种间隔跳采的充填采煤方法
CN104481536B (zh) * 2014-11-13 2017-02-08 中国矿业大学 控制覆岩裂隙与地表沉陷的掘采充平行作业的采煤方法

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109798116A (zh) * 2019-04-04 2019-05-24 中国矿业大学(北京) 实现双翼布置工作面的采区或带区完全无煤柱的方法
CN111750822A (zh) * 2019-10-31 2020-10-09 河南理工大学 一种采煤诱发的覆岩与地表沉陷协同动态预测方法
US20240102343A1 (en) * 2021-08-30 2024-03-28 China University Of Mining And Technology Isolated overburden grouting filling method for coal gangue underground emission reduction
CN114320298A (zh) * 2022-01-05 2022-04-12 国家能源集团国源电力有限公司 采煤方法
CN114562330A (zh) * 2022-04-02 2022-05-31 中国矿业大学 覆岩隔离注浆充填浆液扩散范围控制方法
CN114991858A (zh) * 2022-05-20 2022-09-02 中国矿业大学 基于充填采场稳定的最大滞后充填距离确定方法

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WO2016074456A1 (zh) 2016-05-19
CN104481536B (zh) 2017-02-08
AU2015345830A1 (en) 2016-08-11
CN104481536A (zh) 2015-04-01

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