摘要
西南某水电站引水线路靠近厂房段为三叠系须家河组和雷口坡组构成的顺层坡。现场调查发现,浅表层存在一个由四个滑坡组成的滑坡群,从南到北滑坡编号依次为A、B、C和D。滑坡A、B主要由块碎石土组成,滑坡C主要由块碎石土夹保持原岩层序的岩块（假基岩）组成,滑坡D基本由假基岩组成。这些滑坡属滑移-拉裂、滑移-弯曲、倾倒变形破坏机制。岩层中的软弱层面及有效临空面是滑坡发育的基本条件;降雨或地震是重要的诱发因素。
There is a bedding rock slope formed from Xijiahe and Leikoupo formation of Triassic system near the workshop of one hydro-electric power station in it＇s water transfer way on southwest . Based on the situ surveys on this slope, it is found that there persist a group of shallow layer landslides composed of four landslides ,it＇s numberis A,B,C,D from south to north. Landslide A and B is composed mainly of block and granule soil,landslide B is composed mainly of block and granule soil contained rock block（pseudo rock） keeped primary rock sequences ,and landslide C is make up of pseudo rock. The mechanism of those landslides is slide-fracture and slide-bending and toppling deformation. The weak interface and the available free face of stratum is the basic conditions of those landslides ; Rainfall or earthquake is the main induced factors.
出处
《水土保持研究》
CSCD
北大核心
2007年第4期305-308,共4页
Research of Soil and Water Conservation
基金
国家自然科学基金资助项目（40472143/D0214）.
关键词
顺层滑坡
成因机制
滑移-拉裂
滑移-弯曲
倾倒变形
西南
bedding landslide
genetic mechanism
slide-fracture
slide-bending
toppling deformation
Southwest
