Impact of closed pores on gas transport and its implication for optimizing drainage borehole design
Hexiang Xu,
Ting Liu,
Cheng Zhai
et al.
Abstract:Mining disturbances can rupture the closed pores, releasing the gas and potentially triggering gas accidents. The pre-drainage of gas via boreholes is the primary measure for preventing coal and gas outbursts. Nevertheless, the influence of closed pores on gas migration remains unclear, leading to suboptimal borehole spacing and radius. Therefore, a gas–solid coupled model incorporating closed pores was developed to investigate the influence of closed pores on gas migration during gas drainage (GD). Subsequent… Show more
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