Results 101 to 110 of about 12,068 (222)

Development law and mechanism of surface cracks caused by shallow coal seam mining

Meikuang Anquan, 2022
In the paper, N1212 working face was taken as the research object, the law and mechanism of surface cracks in shallow coal seam mining were studied by means of field investigation, dynamic monitoring and numerical simulation. The results show that the development degree of surface cracks in shallow coal seam mining is high, mainly “step” cracks, and ...
MIAO Yanping, XIE Xiaoshen, CHEN Xiaosheng, CONG Tong, WANG Jianwen, HOU Enke, FENG Dong   +6 more
openaire   +1 more source

Coalbed Methane Development in Indonesia: Design and Economic Analysis of Upstream Petroleum Fiscal Policy [PDF]

, 2019
Due to increasing demand for natural gas in Indonesia, the Government now promotes exploration for coalbed methane (CBM). Currently, Indonesia has 453 trillion cubic feet (TCF) of CBM reserves.
Acquah-Andoh, Aguilera, Ajak, Andrews Owusu, Asia, Augustine O. Ifelebuegu, Baunsgaard, BP, BP, Chakhmakhchev, Clarke, Dartanto, Deliotte, Directorate General of Oil and Gas (Migas) Ministry of Energy and Mineral Resources Republic of Indonesia, Dirjen Migas, Elijah Acquah-Andoh, Ferdian, Fernandes, Finch, Hanania, Haque, Haque, Herdi A. Putra, HM Treasury, Holterud, Indonesia-Investments, Ivan, Jaimungal, Johnson, Johnston, Kim, Kozlova, Kurnely, Le, Macmillan, Mansour, Meehan, Mian, Mommer, Moore, Mujiyanto, Nakhle, Nakhle, Nugroho, OGFJ, Putten, Savolainen, Seidle, Shafiaee, Statsitica, Stevens, Stevens, The Guardian, Thomas, Ward, Wood Mackenzie, Wood Mackenzie, World Petroleum Council, Zhang, Zhang, Zhang   +60 more
core   +1 more source

Study of water-conducting fractured zone development law and assessment method in longwall mining of shallow coal seam. [PDF]

Sci Rep, 2022
Li X, Ji D, Han P, Li Q, Zhao H, He F.
europepmc   +1 more source

Study on Developing Mechanism of Coal Pillar Pressure of Shallow Coal Seams with Thick Seam Spacing Passing Through Overlying Goaf

Meikuang Anquan, 2020
Taking Nanliang Coal Mine thick seam spacing mining as the engineering background, aiming at the safety problem of dynamic rock pressure occurring when the lower coal seam is mined over the pillar of the overburden goaf, this paper studies the mechanism of rock pressure appearing when the working face crosses the pillar of the overburden goaf by means ...
openaire   +1 more source

Research on reasonable coal pillar staggered distance in shallow multi-seam mining

Discover Applied Sciences
Abstract In shallow buried closely spaced multi-seam mining in Jurassic Coalfield in western China, due to specific reasons, it is inevitable that the lower and upper coal seam working faces and coal pillars are overlapped, resulting in stress concentration, uneven subsidence of the ground surface, the deformation and ...
Qingxiong Wang, Qingxiang Huang, Yanpeng He, Dongling Fan, Sushe Chen, Wei Wang   +5 more
openaire   +1 more source

Geology of Workington and Maryport 1:10000 sheets NY 02 NW, 03NW, SW: NX92NE, and part of 93 SE : parts of 1:50000 sheets 22 (Maryport) and 28 (Whitehaven) [PDF]

, 1988
This report describes the geology, mineral resources and geotechnical aspects of the Workington and Maryport area of Cumbria (Sheets NY02NW, 03NW,SW, NX92NE,SE).
Barnes, R.P., Frost, D.V., Land, D.H., Young, B.   +3 more
core  

A methodology for the environmental assessment of advanced coal extraction systems [PDF]

Procedures developed to identify and assess potential environment impacts of advanced mining technology as it moves from a generic concept to a more systems definition are described.
Evensizer, J., Hutchinson, C. F., Makihara, J., Sullivan, P. J.   +3 more
core   +1 more source

Independent Expert Scientific Panel – Report on Unconventional Oil and Gas [PDF]

, 2014
No abstract ...
Curran, J., Gatliff, R., Haszeldine, R.S., Masters, C., Shipton, Zoe, Sorbie, K., Stuart, F., Waldron, S., Younger, P.L.   +8 more
core   +1 more source

The applied geological mapping of the Dearham and Gilcrux area, Cumbria 1:l0,000 sheets NY 03NE and 13NW: part of 1:50,000 sheets 22 (Maryport) and 23 (Cockermouth) [PDF]

, 1989
This account describes the geology of the 1:l0,000 scale sheets NY03hJE and 13NW which lie within the 1:50,000 geological sheets 22 (Maryport) and 23 (Cockermouth). The resurvey was commissioned by the Department of the Environment with a provision for
Armstrong, M., Young, B.
core  

Analysis of the location of a lower coal seam roadway under multiple stress disturbances in a close coal seam

Scientific Reports
Multiple mining in the near coal seam leads to the complexity of stress distribution and damage of surrounding rock in the pre-excavated lower coal seam roadway, so the location of the lower coal seam roadway is extremely important.
Xiaoyu Wu, Xiaowei Wu, Nan Zhang
doaj   +1 more source