关键词: 开采沉陷, 山区开采, 地表动态移动变形, 地表移动变形预计模型, Knothe时间函数

Abstract: There are about one third of the coal mines under the conditions of mountainous terrain in our country,the surface dynamic movement and deformation induced by the underground mining in mountainous terrain are quite different with the surface dynamic movement and deformation in the plain area.In order to analyze the temporal and spatial characteristics of the surface movement and deformation induced by the mining under the conditions of mountainous terrain,and reveal the regularities of surface dynamic movement and deformation,firstly,the mining influence function of slip in mountain area is obtained by analyzing the characteristics of surface movement and deformation in mountainous area,the prediction model of surface movement and deformation in mountainous area is established based on the factors of mountainous terrain and plain by using the principle of superposition;secondly,based on the Knothe time function,the prediction formula of surface dynamic movement and deformation in mountainous area is derived;finally,the surface dynamic movement and deformation regularities of the two models of the positive slope and back slope are analyzed in detail.The prediction model of the surface dynamic movement and deformation in mountainous area is verified by adopting the measured data of a mine in Shangxi province,the ideal results are obtained.The study results show that the analysis results of characteristics regularities of surface dynamic movement and deformation induced by mining in mountainous area can provide the technical basis for the protection of surface buildings from the surface dynamic movement and deformation induced by mining in mountainous area.

Key words: Mining subsidence, Mining of mountainous area, Surface dynamic movement and deformation, Prediction model of surface movement and deformation, Knothe time function