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为了探讨充填体宽度对沿空留巷顶板形变特征的影响,以神宁乌兰矿5768回采工作面巷帮充填沿空留巷为背景,采用Midas/GTS数值模拟和现场实测相结合的方法,研究不同宽度充填体对沿空留巷顶板形变特性影响规律。结果表明:该数值模拟方法确定的巷旁充填体宽度在围岩逐渐稳定后,顶板形变量小、充填体稳定,说明用该模拟确定的充填体宽度科学合理。
In order to discuss the effect of filling width on roof deformable deformation of gob-side entry retaining, based on the gob-side entry retaining with alluvial filling in No.5688 working face of Shenning Wulan Mine, this paper uses the combination of Midas / GTS numerical simulation and on- The effects of different width of backfill on deformation of gob-side entry retaining roof are studied. The results show that the width of the roadside filling body determined by the numerical simulation method is stable after the surrounding rock is gradually stabilized, and the deformation of the roof plate is small and the filling body is stable, indicating that the width of the filling body determined by the simulation is scientific and reasonable.