倾倒变形体岩体及浅部覆盖层地质参数取值研究  

Study on the Geological Parameter Value of Toppling Deformation Rock Mass and Shallow Overburden

作　　者：李建强[1] 贾桢 张学东[1] 陈书文[1] Li Jianqiang;Jia Zhen;Zhang Xuedong;Chen Shuwen(China Water Resources Beifang Investigation,Design and Research Co.Ltd.,Tianjin,300222)

机构地区：[1]中水北方勘测设计研究有限责任公司,天津300222

出　　处：《水利水电工程设计》2022年第1期33-36,56,共5页Design of Water Resources & Hydroelectric Engineering

摘　　要：某峡谷型水库库区发育大规模倾倒变形体,其变形深度大,最深可达110 m,揭示其发展演化规律以及对其稳定性的合理评价成为水库建设的关键问题之一。岩土体物理力学参数是稳定性分析的基础,参数选取的合理与否直接决定了稳定性分析结果的可靠性,对于合理评价对水库大坝的影响至关重要。在查明倾倒变形体地质结构的基础上,采用室内试验、反演计算、工程类比等方法,综合确定各地层岩土体地质参数。A large-scale toppling deformation is developed in the reservoir area of a canyon reservoir,and its deformation depth is large,up to 110m.Revealing its development and evolution law and reasonable evaluation of the stability have become one of the key problems in reservoir construction.The physical and mechanical parameters of rock and soil mass are the basis of stability analysis.The rationality of parameter selection directly determines the reliability of stability analysis,which is very important for the reasonable evaluation of the impact on the reservoir dam.On the basis of finding out the geological structure of the toppling deformation,the geological parameters of rock and soil mass in each layer are comprehensively determined by means of laboratory test,inversion calculation and engineering analogy.

关 键 词：倾倒变形 参数选取 反演计算 敏感性分析 

分 类 号：P64[天文地球—地质矿产勘探]