桂林理工大学学报2017，Vol.37Issue(2)：293-298,6.DOI:10.3969/j.issn.1674-9057.2017.02.008
库水变动状况下危岩变形破坏机理分析
Analysis on deformation mechanism of dangerous rock in water level change condition
摘要
Abstract
In order to find out the macroscopic deformation and failure characteristics of the Dashanmiao dangerous rock mass,the damage degree and strength change state of the rock mass under the fluctuation of the reservoir water level are analyzed.The deformation and failure mechanism are analyzed,and the failure mode is judged.On the basis of the macroscopic investigation,the field acoustic test was carried out,and the compressive strength and resistance to disintegration test were carried out in indoor dry and wet cycle conditions.The results show that the deformation characteristics of dangerous rock are mainly pullapart,shear and falling.Dry and wet circulation has obvious deterioration effect on dangerous rock mass.The integrity,strength and resistance to disintegration of rock mass are obviously decreasing.The deformation mechanism of Daxingmiao dangerous rock mass is the continuous progressive failure process of the structure and material under the fluctuation of reservoir water level.The most likely instability mode is shear-slip.关键词
库水位/危岩/变形破坏机理/材料破坏/结构破坏Key words
reservoir water level/dangerous rock/deformation and failure mechanism/material damage/structure damage分类
天文与地球科学引用本文复制引用
刘广宁,齐信,王芳婷,王世昌,黄波林..库水变动状况下危岩变形破坏机理分析[J].桂林理工大学学报,2017,37(2):293-298,6.基金项目
国家自然科学基金项目(41372321) （41372321）
中国地质调查局灾害预警项目(12120114079301) （12120114079301）
中国地质调查局水工环地质调查项目(DD20160257) （DD20160257）
