| 四川地区地震崩塌滑坡的基本特征及危险性分区 |
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| 引用本文： | 杨涛,邓荣贵,刘小丽.四川地区地震崩塌滑坡的基本特征及危险性分区[J].山地学报,2002,20(4):456-460. |
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| 作者姓名： | 杨涛 邓荣贵 刘小丽 |
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| 作者单位： | 西南交通大学土木工程学院岩土工程系,四川,成都,610031 |
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| 基金项目： | 中国地震局分析预报中心“九五”重点基金项目 (编号 :95 -0 7-0 42 5 7) |
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| 摘 要： | 四川地区地震崩塌及滑坡非常发育，时常造成严重灾害，本文在现场调查资料及已有研究的基础上，对四川地区地震崩塌，滑坡的分布规律，类型，特征及其灾害性进行了更深入的分析，并就其特征进行了分区。
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| 关 键 词： | 四川地区 地震崩塌 地震滑坡 地震灾害 危险性分区 分布规律 |
| 文章编号： | 1008-2786(2002)04-0456-05 |
| 修稿时间： | 2002年4月24日 |
The Distributing and Subarea Character of the Seismic Landslides in Sichuan |
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| YANG tao,DENG rong-gui and LIU xiao-li.The Distributing and Subarea Character of the Seismic Landslides in Sichuan[J].Journal of Mountain Research,2002,20(4):456-460. |
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| Authors: | YANG tao DENG rong-gui and LIU xiao-li |
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| Abstract: | A large earthquake in a mountainous region can generate thousands of landslides in a few minutes, and those landslides can cause severe damage on the people. The Sichuan region, because of its mountainous terrain and seismic activity, faces a potential hazard from earthquake-induced landslides. In this chapter, the landslides triggered by earthquake have been classified as rock falls and avalanches and slides according to the predominant mode of movement and material. The smallest events likely cause rock falls, avalanches and slides are Ms 3.6, Ms 3.9 and Ms 4.2, respectively. Only the avalanches and slides have great harm in the engineering. The distribution characters of the landslides in Sichuan region are: the first is that the slides mostly focus in the west region; the second is that the slides have the zonal distributing character; the third is that the slides are affected by geological and geomorphological conditions and strata, etc. The slide area improved by the magnitude and the range can describe by the upper and lower limit formula. Form the point of view of engineering, the smallest magnitude and intensity are Ms 4.7 and VI respectively. Finally, the Sichuan area has been distributed into three danger zones, those are the most dangerous area of the west region and the middle dangerous area of the north region and the gentle dangerous area of the east region. The other regions besides the three dangerous ones have lower dangerous in the engineering. |
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| Keywords: | earthquake-induced landslide earthquake-induced avalanche earthq uake hazard fatality subareas |
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