摘要
以1933年岷江上游叠溪地震诱发的地面地质灾害基本特征入手,系统阐述了叠溪地震区斜坡变形破坏分区分带的 典型特征,归纳总结了高地震烈度区斜坡变形破坏的空间发育分布规律;重点从斜坡变形破坏分区特征与发震机制和应力场 的成生关系方面,分析探讨了叠溪地震区斜坡变形破坏分区特征的成因机制,阐明了1933年叠溪地震造成震区不同区带斜坡 变形破坏类型和变形破坏强烈程度差异之原因,充分揭示了内生地质作用对浅表生地质灾害的控制作用。
Based on the characteristics of surface geological hazards caused by the 1933 earthquake in the Diexi earthquake area upstream of the Mingjiang river, the authors conducted a systematic analysis of the distribution characteristics of slope deformation-failure in the Diexi high earthquake intensity area. Four types of slope deformation-failures were observed in the Diexi area. Mechanisms of slope deformation-failures were then developed based on the relationship between initiation of earthquake and stress fields in the Diexi area. Different types of slope deformation-failures fully reflect various impacts of the earthquake at different locations. It is concluded that the endogentic geological process controls the occurrence of the epigenetic geological disasters.
出处
《工程地质学报》
CSCD
2005年第1期68-75,共8页
Journal of Engineering Geology
关键词
斜坡
成因机制
发震机制
地质灾害
地质作用
地震区
变形破坏
地面
分带
空间
Minjiang-Diexi area, Seismic landslide and falling, Slope deformation-failure, Distribution characteristics, Genetic Mechanism
