Prediction and evaluation on building damages of strip pillar mining under villages

Abstract：In order to realize coal mining in safety without moving villages, increase coal recovery ratio, and solve the conflict of mining and panel development, the strip pillar mining scheme under villages is presented.Combined with the specific geological and mining conditions and surface structures status in Wannian coal mine.Based on the existing observation results of surface movement and deformation in Wannian coal mine, the surface subsidence law of the coal mine basically accords with the probability-integral method.Through theoretical calculation and analysis, the prediction parameters of probability-integral method have been worked out, and the surface movement and deformations are predicted.With the predicted results, the damage extent of the buildings is analyzed.The results show that it is technically feasible and economically reasonable to use strip pillar mining under villages in Wannian coal mine.

Keyword：strip pillar mining;mining-induced damage;mining under villages;