厚黄土覆盖山区开采沉陷预计

Prediction of mining subsidence in mountain area overlaid with thick loess bed

以铜川矿区 90 5山区地表观测站的观测资料为基础 ,对山区地表移动变形的特征进行了具体分析 ,获得稳定后的走向、倾向主断面移动曲线 ,建立了走向主断面的下沉和水平移动表达式 ,把山区地表移动看作是开采影响分量和开采影响下的山坡滑移分量叠加的结果。用影响函数叠加法确定出该地质条件下的预计参数 ,分离出山区滑移影响参数 P(x) ,并进行了滑移影响的定量分析和移动变形的预计检验 ,预计结果与实际吻合程度较好 ,所提出的参数求取方法和参数可在类似地质采矿条件下参考使用。

Based on the data of observation station of surface movement in Tongchuan mining area,the paper concretely analyzes the characteristics of surface movement and deformation in mountain area,obtains final movement and deformation curve in strike and oblique profile and establishs the expressions of subsidence and displacement in strike profile.In the paper,the surface movement and deformation in mountain area is regarded as the overlap of mining branch and land slip branch effected by mining.The paper uses effect function overlap method to determine prediction parameters on this geological conditions.detaches land slip effect parameter P(x) in mountain area and makes quantitative analysis and prediction examination of land slip effect.Predicted and actual results are approximately equal.The method of calculating parameters and parameters can be referred on analogical geological conditions.