Abstract:
With the continuous development of coal resources,the problems of coal resources under buildings,water bodies and roads are becoming more and more prominent,filling mining methods have become an effective method.Based on the application practice of extra thick coal seam mining with paste-like filling in Gonggeyingzi coal mine,through actual observation of filling mining surface subsidence and prediction and analysis of ground movement and deformation,combined with ground buildings damaged grade standard,filling mining impact on surface village were studied.The results show that the effect of the control of surface subsidence is good,and the subsidence coefficient is 3.5%.After the extra thick coal seam mining,the village's surface movement and deformation is not obvious,and will not affect the normal use of the building.