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CFD modelling of longwall goaf gas flow to improve gas capture and prevent goaf self-heating
Journal of Coal Science and Engineering (China), 2009CFD models have been developed to investigate the longwall goaf gas flow patterns under different mining and geological control conditions. The longwall goaf was treated as porous regions and gas flow was modelled as a momentum sink added to the momentum equation.
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Goaf Surface Stability Analysis Using EMD Method
2010 Third International Conference on Information and Computing, 2010Surface deformation of goaf is a complex non-linear process, which has a hidden, complexity, and long-term features. Before building the life or service facilities in the goaf, we must have evaluated the stability and residual. In this paper, a new idea was put forward for stability analysis and evaluation of goaf by multi-scale decomposition using EMD(
Zhang An-bing, Liu Xin-xia, Liu Hui
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Longwall horizontal gas drainage through goaf pressure control
International Journal of Coal Geology, 2015Abstract Gas drainage in Australian longwall mining is increasingly challenging because of complex gassy conditions, multi-seam environments beneath previously extracted goafs, and environments where drilling a large number of conventional surface vertical gas drainage boreholes is not practical.
Hua Guo +3 more
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The Treatment Technology of Banbidian Goaf in Qinhuangdao
Applied Mechanics and Materials, 2014The issues induced by underground mining are worldwide difficulties because the mined-out area is undesirable due to its implicity, complexity and large deformation. This paper describes the harmfulness of golf in highway construction based on the general failure characteristics of overlying rock masses.
Huan Sheng Mu, Ling Gao
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Goaf Treatment for Gold Mine under Expressway
Applied Mechanics and Materials, 2012Based on investigation and survey, the conformation and the distribution for underground goaf are gotten. The goaf can be completely filled by drilling holes and grouting with the mixture of sand and water, using masonry border to isolate and filtrate the filled space and unfilled space.
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