Research on surface subsidence prediction for drilling solution mining

In order to accurately predict the surface movement and deformation from drilling solution mining, the equivalent mining height model for drilling solution mining was established based on the characteristics of drilling solution mining and the expansion of crystallization of water substance which from insoluble mineral. In addition, the feasibility that using random medium theory to predict surface subsidence from drilling solution mining was analyzed. Furthermore, on the basis of describing the basic principle of probability integral method, the probability integral method prediction parameters for drilling solution mining was solved by learningfrom the mining of sand filling with water. Besides, the surface movement and deformation from drilling solution mining for a salt was predicted. The result shows that probability integral method which based on overburden weak and roof cross off is suitable for drilling solution mining, and the surface movement and deformation from drilling solution mining is smaller than that from coal mining under the same conditions.