Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Yunpei Liang"'
Publikováno v:
Meitan xuebao, Vol 49, Iss 9, Pp 3918-3931 (2024)
To deepen the understanding of the distribution characteristics of geostress in coal-bearing stratum under the control of reversed faults, physical simulation experiments based on the similarity principle were conducted using a self-developed large-s
Externí odkaz:
https://doaj.org/article/3d31b9887a24407aa0dee76ee8ead13d
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 7, Pp 68-78 (2024)
With the accelerated development of surface well cementing technology, the engineering site has higher requirements for the early fluidity and coagulation performance of surface well cementing water slurry. In order to improve the top-off efficiency
Externí odkaz:
https://doaj.org/article/cdba7923667e4ade82272c92eaf39f45
Publikováno v:
Journal of Petroleum Exploration and Production Technology, Vol 14, Iss 7, Pp 2113-2127 (2024)
Abstract The method of segmented hydraulic fracturing in the coal seam roof has proven to be an efficient technique for coalbed methane exploitation. However, the behavior of hydraulic fractures in multilayer formations with significant differences i
Externí odkaz:
https://doaj.org/article/54ebc8cadf704b0ba21db8a12d88c84b
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 4, Pp 177-192 (2024)
The three-field (stress, displacement and fracture field) evolution laws of the inclined coal seam group are complex, which are important for the transport and storage of pressure-relief gas. In order to investigate the three-field evolution law of i
Externí odkaz:
https://doaj.org/article/231ec479ccff4993992aee32ac48e647
Autor:
Yunpei LIANG, Shuancheng ZHU, Liang CHEN, Kun ZHAO, Dongling SUN, Jianjie CHEN, Bichuan ZHANG
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 1, Pp 211-220 (2024)
In order to clarify the key technologies for the coordinated development of coal and coalbed methane that are compatible with the mining conditions of inclined broken soft coal seams. Based on the characteristics of gas drainage and asymmetric mining
Externí odkaz:
https://doaj.org/article/cfd03545b13a4f1ca1472dc034f69fb4
Autor:
Menghao Zheng, Yunpei Liang, Quangui Li, Shuren Mao, Shang Li, Jianbo Li, Yanan Qian, Junjiang Zhou
Publikováno v:
Energy Science & Engineering, Vol 11, Iss 12, Pp 4505-4519 (2023)
Abstract Accurately determining the precursors of coal and rock failures is crucial for preventing associated risks in coal mines. In this study, based on the values of the four parameters amplitude, duration, counts and energy of acoustic emission (
Externí odkaz:
https://doaj.org/article/b275d335c5da45358b25ff24fc7a9ebd
Autor:
Zhaopeng Wu, Yunpei Liang, Kaijun Miao, Qigang Li, Sichen Liu, Qican Ran, Wanjie Sun, Hualong Yin, Yun Ma
Publikováno v:
Fractal and Fractional, Vol 8, Iss 7, p 407 (2024)
The coal pillar is an important structure to control the stability of the roadway surrounding rock and maintain the safety of underground mining activities. An unreasonable design of the coal pillar size can result in the failure of the surrounding r
Externí odkaz:
https://doaj.org/article/9084643849534063ac2716607c412852
Publikováno v:
Meitan xuebao, Vol 48, Iss 8, Pp 2976-2994 (2023)
Coal and gas outburst is one of the major disasters that restrict the safe production of coal mine. The coal seam occurrence environment in China is complex and changeable. Outburst disasters occur from time to time. In order to further improve the a
Externí odkaz:
https://doaj.org/article/972925b0ae504b59b409bb411105fa36
Publikováno v:
Frontiers in Energy Research, Vol 12 (2024)
Studying pore structures of disturbed coal and their influences on adsorption characteristics is conducive to in-depth understanding of occurrence and migration of gas in reservoirs in areas prone to coal and gas outbursts. A mercury porosimeter and
Externí odkaz:
https://doaj.org/article/99e636f3dd194be59cb74acab5b5c6ac
Publikováno v:
Meitan xuebao, Vol 48, Iss 4, Pp 1645-1660 (2023)
With the global transition to a low-carbon energy structure, coupled with the depletion of coal mine resources, gas disasters, and other problems, the number of closed/abandoned coal mines is increasing rapidly. After the coal mine closes, the residu
Externí odkaz:
https://doaj.org/article/99186ca7c0904a6396759581632e83dc