摘要
宝塔滑坡是1个基岩古滑坡,本文把它作为1个实例,分析为什么进行了3次大规模勘探仍然出现范围边界的错误,这涉及到古滑坡确定的证据、分析判断方法、勘探方向与方法等问题。确定滑坡的根据主要依据各种滑坡地质现象与滑坡地形地貌证据,除滑面证据外,许多所谓滑坡的地质、地形、地貌现象都具有多解性,因此要进行多因素综合对比分析。本文对宝塔滑坡进行了具体分析:指出以前对汪家梁部分坡体被确定为宝塔滑坡西部滑体证据的翏误与不足,提出了地质、地貌与滑坡形态学的反证与理由;结合宝塔古滑坡实例,提出了识别古滑坡的地貌对比、滑坡形态学、滑坡性质与现象分析等方法,更正了滑坡的面积与体积,也讨论了古滑坡调查与勘探的经验教训。
Baota landslide,a typical ancient rock slide,is used as an example to show why there are still mistakes in its boundary even after three times geological investigation in large scale have been carried out.It involves many problems like the evidence for the determination of ancient landslide,methods of analysis and identification,direction and method of exploration.The determination of landslide mainly depends on the geological phenomena and topography.In addition to the evidence of slide plane,there are multiple solutions for the phenomena of geology,topography and morphology.Thus a synthetic comparison and analysis of multiple factors should be conducted.The fallacy is pointed out for the slope body of Wang-Jialiang which is determined as the western slide body of Baota landslide.Evidences on the geological phenomena and topography are provided.Methods of identification of ancient landslide based on landslide geomorphology and topography are presented in this paper.Lessons,which are learned from the survey and exploration of the landslide,are discussed at last.
出处
《工程地质学报》
CSCD
北大核心
2011年第4期555-563,共9页
Journal of Engineering Geology
基金
国家重点基础研究发展规划(973)项目(2009CB724605
2010CB731501)
国家自然科学基金资助项目(41027001)
中国科学院知识创新工程重要方向项目(YZ200912
KZCX2-YW-JS102)
中国地质调查局工作项目(1212011014026)
关键词
宝塔滑坡
三峡库区
西边界
更正
古滑坡鉴别
Baota landslide
Three Gorges reservoir district
Western boundary
Correction
Identification of ancient landslide
