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以金桥煤矿孤岛工作面2321为例,采用FLAC~(3D)数值模拟软件模拟分析了两侧工作面开采后侧向支承应力的分布状态,得出:单、双侧工作面开采时,在工作面还未采到测线时,测线处的垂直应力近似等于原岩应力,但双侧工作面开采时的应力略高于单侧开采。当工作面推过测线后,测线处的垂直应力随之增大,当上覆岩层彻底稳定后,垂直应力达到最大值。
Taking island face 2323 in Jinqiao Coal Mine as an example, the distribution of lateral bearing stress after working face mining was simulated and analyzed by using FLAC 3D numerical simulation software. The results show that when single and double sides face working, When the survey line has not been surveyed, the vertical stress at the survey line is approximately equal to the original rock stress, but the stress when mining the double-sided face is slightly higher than that of the unilateral mining. When the working surface is pushed through the survey line, the vertical stress at the survey line increases. When the overburden is completely stabilized, the vertical stress reaches the maximum.