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Longyong Shu
This study aimed to examine gas extraction technology in the goaf of an L-shaped borehole in the mining fissure zone of a short-distance coal seam group. The numerical simulation method was used to analyze the failure law of overlying rock during mining,...
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Shuliang Xie, Gang Wang, Enmao Wang, Qiming Huang and Mingze Xia
Coal fire remains one of the main hazards of underground work. Spontaneous coal fires cause serious casualties and property losses. At present, most of the studies on coal spontaneous combustion have been conducted on working faces shorter than 200 m. Ho...
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Yejiao Liu, Hui Xing, Zeyu Duan, Chaoyun Yu, Zhichao Tian and Ting Teng
The mechanical properties of gas-containing coal and rock mass play important roles in controlling the occurrence and development of coal and gas outbursts. The gradual increase in mining depth will change the failure mechanism of gas-containing coal and...
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Shaojie Zuo, Zhaolong Ge, Zhe Zhou, Li Wang and Hanyun Zhao
Extraction of gas (coalbed methane) produces clean energy and can ensure that coal mines maintain high-efficiency production. The currently available coal seam permeability enhancing technologies and modes have certain application restrictions. Therefore...
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Zhaolong Ge, Liang Zhang, Juzheng Sun and Jinhong Hu
A finite element computer program, Comsol Multiphysics, was used to solve the partial differential equations in this paper.
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Aal-e Ali, Daniel R. Sloane and Vladimir Strezov
Coal and coal seam gas mining have impacts on the water and sediment quality in the proximity of the mining areas, increasing the concentrations of heavy metals downstream of the mine discharge points. The objective of this study was to assess the impact...
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Angela K. Werner, Cate M. Cameron, Kerrianne Watt, Sue Vink, Paul Jagals and Andrew Page
The majority of Australia?s coal seam gas (CSG) reserves are in Queensland, where the industry has expanded rapidly in recent years. Despite concerns, health data have not been examined alongside CSG development. This study examined hospitalisation rates...
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Dirk Mallants, Jirka ?imunek, Martinus Th. van Genuchten, Diederik Jacques
Pág. 1 - 33
The HYDRUS-1D and HYDRUS (2D/3D) computer software packages are widely used finite element models for simulating the one-, and two- or three-dimensional movement of water, heat, and multiple solutes in variably-saturated media, respectively. While the st...
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Joshua F. Dean, Michael F. Billett, Callum Murray, Mark H. Garnett
Pág. 236 - 244
Methane (CH4) is a powerful greenhouse gas that plays a prominent role in the terrestrial carbon (C) cycle, and is released to the atmosphere from freshwater systems in numerous biomes globally. Radiocarbon (14C) analysis can indicate both the age and so...
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Faqiang Su, Takuya Nakanowataru, Ken-ichi Itakura, Koutarou Ohga and Gota Deguchi
In the underground coal gasification (UCG) process, cavity growth with crack extension inside the coal seam is an important phenomenon that directly influences gasification efficiency. An efficient and environmentally friendly UCG system also relies upon...
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