Prediction and engineering division of the ground movement and deformation above the gob of a coal mine in Yulin

Based on the monitoring data of ground subsidence under the similar circumstance, the future ground movement and deformation at a coal mining area inYulin is predicted by using engineering analogue method, curve analysis method, probability integration method and finite difference numerical analysis method.The mining-affected areas are designated as 316m outside the mining boundary, and the maximum ground subsidence is 5760mm.Combined with the deformation limits of the constructions, the mining-affected areas are divided into severe impacted section, relatively impacted section and slightly affected section according to project needs.It provides a scientific basis for differentially using the land resources, reducing the risks of investment in construction, and fully using the national coal and land resources.