| 岷江上游叠溪地震区斜坡变形破坏分区特征及其成因机制分析 |
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| 引用本文： | 许向宁,王兰生.岷江上游叠溪地震区斜坡变形破坏分区特征及其成因机制分析[J].力学学报,2005,13(1):68-75. |
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| 作者姓名： | 许向宁 王兰生 |
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| 作者单位： | 成都理工大学环境与土木工程学院,成都610059 |
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| 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。
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| 关 键 词： | 岷江叠溪 地震滑坡与崩塌 斜坡变形破坏 分区分带特征 成因机制 |
| 收稿时间： | 2003-12-27 |
| 修稿时间： | 2004-05-17 |
ON THE MECHANISM OF SLOPE DEFORMATION-FAILURES AND THEIR DISTRIBUTION CHARACTERISTICS IN A HIGH EARTHQUAKE-INTENSITY AREA |
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| XU Xiangning,WANG Lansheng.ON THE MECHANISM OF SLOPE DEFORMATION-FAILURES AND THEIR DISTRIBUTION CHARACTERISTICS IN A HIGH EARTHQUAKE-INTENSITY AREA[J].chinese journal of theoretical and applied mechanics,2005,13(1):68-75. |
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| Authors: | XU Xiangning WANG Lansheng |
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| Institution: | Chengdu University of Tecchnology,Chengdu 610059 |
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| Abstract: | 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. |
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| Keywords: | Minjiang-Diexi area Seismic landslide and falling Slope deformation-failure Distribution characteristics Genetic Mechanism |
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