官地水电站坝区岩体的浅表生结构

THE EPIGENETIC STRUCTURES OF ROCRMASS IN THE DAM AREA OF GUANDI HYDRO-ELECTROPOWER STATION

浅表生结构的研究 ,对认识河谷岩体的岩体结构特征、工程岩体结构建模及稳定性评价等具有重要意义。官地水电站坝区玄武岩体的浅表生结构极为发育 ,且其分布具有一定的规律性。本文通过对浅表生结构的发育分布及变形破裂形迹的调查分析 ,研究了浅表生结构的空间发育规律及其组合形式 ,结合地质地貌演化机制分析 ,探讨了浅表生结构的形成机制 。

Study of epigenetic structure of rockmass is very important for understanding the structure of valley rockmass, constructing structural model of the rockmass, and its stability evaluation. In the area of Guandi Hydroelectropower Station, the epigenetic structures intensely developed, distributed regularily. In this paper, the authors study the regularity of spatial distribution and the association pattern of the epigenetic structures by analysis of the distribution of deformation and fracture trace, discuss their formation mechanism in connection with geologic physiological evolution mechanism, and construct the basic model of epigenetic structures of rockmass in the dam area.