井工开采条件下斜坡变形分带特征分析

Analysis on Slope Deformation Zoning under the Condition of Underground Mining

选择具有山区井工开采条件下代表性的斜坡-太原市古交风峁顶斜坡为典型实例,根据斜坡在井工开采下变形特征,和斜坡所处地质环境条件,并结合斜坡变形监测实测资料,进行了坡体不同部位下沉变形分析,得出了山区井工开采条件下斜坡变形破坏具有分带性的特征是:坡脚的水平-隆起变形带、坡腰的水平位移-下沉变形强烈带及坡顶的水平位移-下沉变形减弱带,可为类似地质环境条件及采矿条件下地下开挖引发斜坡变形研究提供参考。

As a typical example, Fengmaoding slope located in Gujiao, Taiyuan,was selected to analyze the deformation under the condition of underground mining, in mountain area. According to the slope deformation characteristics, its geological environment, and real monitoring data of slope deformation, the deformation of different parts of the slope was analyzed, and a conclusion was drawn that the deformation of the slope was characterized by its zoning, i. e. , horizontal upheaval band at toe of slope, intense horizontal displacement and subsidence band in the middle of the slope, and weak horizontal displacement and subsidence band on the top of the slope. This study provides references for the research of deformation caused by underground excavation slope.