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为了研究矿井巷道突水蔓延规律,使用格子Boltzmann方法建立了井下突水蔓延二维仿真模型,平直边界采用反弹格式处理,曲边界采用BFL格式处理。因需要模拟复杂巷道,采用分块耦合算法将巷道分成若干规则的块,各块分别独立计算,只在边界处交换数据,从而去除冗余网格,简化网格计算,提高系统资源利用效率。最后通过一个仿真实例,形象、直观的展示了突水发生时地下矿巷道突水水流的演变过程,对矿山突水事故防治和井下人员逃生决策具有现实指导意义。
In order to study the law of water inrush in mine roadway, a two-dimensional simulation model of underground water inrush propagation was established by using lattice Boltzmann method. The flat boundary was treated by the rebound format and the curved boundary was treated by BFL format. Because of the need to simulate complex roadway, the block coupling algorithm is used to divide the roadway into several regular blocks. Each block is separately calculated, and only the data is exchanged at the boundary to remove the redundant mesh, simplify the grid calculation and improve the system resource utilization efficiency. Finally, a simulation example shows the evolvement process of water inrush flow in underground mine roadway when water inrush occurred, which is of practical significance to mine water inrush accident prevention and personnel escape decision.