[1]陈兴长,胡凯衡,葛永刚,等.云南鲁甸“8·03”地震地表破裂与大型地震滑坡[J].山地学报,2015,(01):65.
　CHEN Xingzhang,HU Kaiheng,GE Yonggang,et al.Surface Ruptures and Largescale Landslides Caused by“8?03” Ludian Earthquake in Yunnan, China[J].Mountain Research,2015,(01):65.
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云南鲁甸“8·03”地震地表破裂与大型地震滑坡()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2015年01期
页码:
65
栏目:
山地灾害
出版日期:
2015-02-01

文章信息/Info

Title:
Surface Ruptures and Largescale Landslides Caused by“8?03” Ludian Earthquake in Yunnan, China
作者:
陈兴长;胡凯衡;葛永刚;汪阳春;
西南科技大学环境与资源学院;中国科学院山地灾害与地表过程重点实验室;中国科学院水利部成都山地灾害与环境研究所;
Author(s):
CHEN Xingzhang;  HU Kaiheng;  GE Yonggang;  Wang Yangchun
1. School of Environment and Resource, Southwest University of Science and Technology, Mianyang, 621010, China; 2.Key Laboratory of Mountain Hazards and Earth Surface Processes, Chinese Academy of Sciences, Chengdu, 610041, China; 3. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, China
关键词:
地表破裂; 滑坡; 走滑断层; 鲁甸“8·03”地震
Keywords:
surface rupture;  landslides;  strikeslip fault;  “8·03” Ludian Earthquake
分类号:
P316，P642 22
文献标志码:
A
摘要:
云南鲁甸"8·03"地震造成重大的人员伤亡和财产损失,诱发大量次生山地灾害。根据实地考察和遥感解译,在地震烈度Ⅸ度区内发现一条地震地表破裂带,沿破裂带发育有4个(特)大型滑坡和一个高危堰塞湖。该破裂带具有典型的右旋走滑特征,系右旋走滑断层活动的结果。根据其发育特征,该断层应为"包谷垴-小河断裂"沿小河-乐红镇方向的延伸部分,对地震灾区次生山地灾害的分布起着重要的控制作用,也是4个大型滑坡形成的重要动力来源。综合分析断层的位置特征和大型地震灾害的分布情况,推断该断层为本次地震的发震断层。建议进一步加强该发震断层诱发次生山地灾害的调查与分析,防止次生山地灾害造成新的危害。
Abstract:
The August 3, 2014 Ludian Earthquake (Ms 6.5)（“8·03” Ludian Earthquake）, resulted in more than 600 deaths and significant property losses, has induced thousands of secondary geohazards. According to field investigation and remote sensing interpretation, it was found that there was an earthquake surface rupture zone with four largescale landslides and a highrisk quakelake around it in the Ⅸ-degree seismic intensity area. The zone is characterized by typical rightlateral strikeslip, which means that it caused by the activity of a rightlateral strikeslip fault. Therefore, the earthquake surface rupture is an outcrop of the fault. According to the features of the outcrop, it should be an extension of Baogunao-Xiaohe Fault along the direction from Xiaohe to Lehong towns (NW-SE). The fault, which controlled the distribution of secondary geohazards induced by the earthquake, was an important factor for the formation of the four largescale landslides. Based on analysis of the fault location features and the distribution of the four largesize landslides, it was convinced that the fault was also seismogenic fault of the earthquake and characterized by rightlateral strikeslip. It was suggested that the investigation and prediction research of secondary geohazards induced by the seismogenic fault should be strengthened to prevent new damages by the secondary geohazards.

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备注/Memo

备注/Memo:
收稿日期(Received date)：2014-09-01。
基金项目(Foundation item)：中国科学院重点部署项目(KZZD-EW-05-01)和国家自然科学
基金项目（41372301）。[Supported by the Key Research Program of the Chinese Academy of Sciences and the National Natural Science Foundation of China (Grant No. 41372301).]
作者简介（Biography）：陈兴长（1970-），男，河南沁阳县人，副教授，主要从事山地灾害防治研究。[Chen Xingzhang (1970-), male, associate professor, engaged in the teaching and research work of mountain hazards.] *
通信作者(Corresponding author)：胡凯衡，（1975-），男，研究员，主要从事泥石流研究。[Hu Kaiheng (1975-), Male, Professor, Major in debris flow mechanism and mitigation.] E-mail: khhu@imde.ac.cn
更新日期/Last Update: 1900-01-01