Analysis of Building Damages of Paste Backfill Mining under Villages

In order to realize coal mining in safety without moving villages, increase coal recovery ratio, solve the conflict of mining and panel relays, the scheme of paste backfill mining under villages in Xiaotun coal mine is executed, and the surface subsidence observation lines on the surface of the mine are established and timely monitored. Based on the results of the surface movement observation, the probability integral method is applied to predict the surface subsidence of the villages in the coal mine. With the theoretical calculation and the observation data analysis, the prediction parameters of probability integral method have been worked out, and the surface displacements and deformations are predicted. According to the predicted results and the surface structures status in the coal mine, the building damage extent and grades of the villages are analyzed. The results show that the paste backfill mining to exploit the coal resources under villages is technically feasible and economically reasonable, which is important to reduce the mining damage and protect the ecological environment in Xiaotun coal mine.