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	芦山地震引发的重力侵蚀分析
	漆力健 ; 王兆印 ; 王旭昭 ; 何晓燕 ; QI Li-jian ; WANG Zhao-yin ; WANG Xu-zhao ; HE Xiao-yan
	2016-03-30 ; 2016-03-30
关键词	芦山地震 重力侵蚀 分布特点 崩塌势能 Lushan earthquake gravity erosion distribution characteristics potential energy of avalanche P315 P642.2
其他题名	Analyses of gravity erosion triggered by Lushan earthquake
中文摘要	芦山地震造成了大量崩塌、滑坡。实地调查和相关资料分析表明,芦山地震重力侵蚀数量上以崩塌为主,规模小;滑坡少,但是规模较大。这些侵蚀主要发生在山体的上部和窄深峡谷内。较大规模的崩塌滑坡体均分布在流水深切的窄V型河谷段,岭谷高差越大,山体越陡,表现越明显。芦山地震崩滑的规模与分布首要控制因素是河谷地形地貌;崩塌滑坡分布与断层的距离相关性不如汶川地震明显。河谷深切使得潜在崩滑体具有较大单位崩滑势能,在强震影响下容易出现失稳。在芦山地震释放能量相对较小的情况下,崩塌滑坡发生需要更大势能和更大坡度。由于芦山地震区河谷下切不如汶川地震区强烈,地震震级较小,芦山地震的重力侵蚀总量仅为汶川地震的千分之一。; The Lushan earthquake caused numerous avalanches and landslides. Field investigations and data analyses revealed that the gravity erosion triggered by Lushan earthquake was mainly avalanches with small volume. Very few landslides occurred but they had large volumes. These avalanches and landslides occured in the upper mountains and V-shaped valleys. The gravity erosion was so closely related to the river bank slope and the higher was the slope the larger was the volume of avalanches. The characteristics of distribution and size of the mass movements were closely related to topography and geomorphology. The distance from the epicenter was not so important for occurrence of avalanches and landslides like that in Wenchuan earthquake. Riverbed incision increased the potential energy for landslides and avalanches and reduced the stability of slope. Compared with Wenchuan earthquake,the released energy in Lushan earthquake was smaller,and the depth of incised valley in Lushan earthquake area was much less,so the total volume of avalanches and landslides triggered by Lushan earthquake was 1 000 times smaller.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/148657]
专题	清华大学
推荐引用方式 GB/T 7714	漆力健,王兆印,王旭昭,等. 芦山地震引发的重力侵蚀分析[J],2016, 2016.
APA	漆力健.,王兆印.,王旭昭.,何晓燕.,QI Li-jian.,...&HE Xiao-yan.(2016).芦山地震引发的重力侵蚀分析..
MLA	漆力健,et al."芦山地震引发的重力侵蚀分析".(2016).

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