澜沧江某水电站近坝库岸岩体倾倒变形的成因机制  

GENETIC MECHANISM OF THE TOPPLING DEFORMATION NEAR THE DAM OF A HYDROPOWER STATION ON LANCANG RIVER

作　　者：鲍杰[1] 李渝生[1] 曹广鹏[1] 王洁[1] 

机构地区：[1]成都理工大学地质灾害防治与地质环境保护国家重点试验室,成都610059

出　　处：《地质灾害与环境保护》2011年第3期47-51,共5页Journal of Geological Hazards and Environment Preservation

摘　　要：该倾倒变形的发育特征较复杂,其内部、底界和后缘深部的变形破坏类型分别为"倾倒蠕变"、"倾倒滑移"和"倾倒弯折"。岩体倾倒变形的形成与演变经历了4个阶段:卸荷回弹-倾倒蠕变,层内拉张-切层张剪破裂,弯曲-折断变形破裂和底部滑移-后缘深部折断面贯通破坏。The deformation presents complex development characteristics as the deformation types of its interior, base bounda- ry and back edge are respectively ＂toppling-creep＇, ＂slip-toppling＂ and ＂toppling-bend/fracture＂. It passes four evolution stages like unloading rebound-toppling creep, extension within layers-strain-shear rupture, bend fracture deformation rupture and bottom slip-joint failure of deep back edge fracture surface.

关 键 词：倾倒变形 发育特征 成因机制 演化过程 

分 类 号：P642[天文地球—工程地质学] TU457[天文地球—地质矿产勘探]