[1]高延超,陈宁生,徐如阁,等.芦山地震中G318线天全段崩塌发育规律[J].山地学报,2013,(05):632.
　GAO Yanchao,CHEN Ningsheng,XU Ruge,et al.Development and Distribution of Collapses Induced by“4?20”Lushan Earthquake:Taking Tianquan Section of China National Highway 318 as a Sample[J].Mountain Research,2013,(05):632.
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芦山地震中G318线天全段崩塌发育规律()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2013年05期
页码:
632
栏目:
“4?23”芦山地震
出版日期:
2013-01-01

文章信息/Info

Title:
Development and Distribution of Collapses Induced by“4?20”Lushan Earthquake:Taking Tianquan Section of China National Highway 318 as a Sample
作者:
高延超;陈宁生;徐如阁;巴仁基;南帅;
1.中国地质调查局成都地质调查中心，四川 成都 610081；
2.中国科学院水利部成都山地灾害与环境研究所，四川 成都 610041；
3.中国建筑西南勘察设计研究院有限公司，四川 成都 610081
Author(s):
GAO Yanchao; CHEN Ningsheng; XU Ruge; BA Renji; NAN Shuai
1. Chengdu Center，China Geological Survey，Chengdu 610081，China；
2. Institute of Mountain Hazards and Environment，Chinese Academy of Sciences，Chengdu 610041，China； 3. China Southwest Architectural Design Institute，Chengdu 610041，China
关键词:
崩塌; 芦山地震; G318线; 天全
Keywords:
collapse; Lushan earthquake; China national highway 318; Tianquan County
分类号:
P642.21
文献标志码:
A
摘要:
G318线天全段处于深切峡谷区,在"4·20"芦山地震中共发生26处崩塌。该段崩塌仅有2处为地震中新增点,其余24处均为原崩塌点在地震中重新崩落。通过对崩塌的空间分布、与地震烈度、发震断裂、岩性及坡度的关系等方面的分析,总结芦山地震公路边坡崩塌的发育规律如下:1.崩塌规模以中小型为主;2.由Ⅶ度带到非地震影响区,随着地震烈度的降低,崩塌的规模减小、密度降低;3.崩塌分布表现出明显的"上下盘效应",双石-大川断裂上盘的崩塌分布密度约为下盘的2倍;4.崩塌在花岗岩及砂岩中多发;5.地貌及人类工程活动是崩塌发育的主控因素,地震是其重要诱发因素。震后崩塌具有隐蔽性及滞后性,在余震及强降雨条件下,区内"...
Abstract:
Tianquan section of China national highway 318 is located in the incised valley. During the Lushan Earthquake on April 20，2013，there were 26 collapses accounted along the 91 km highway. Only 2 collapses are new while the other 24 which are exist before the Lushan Earthquake fallen again this time. The development and distribution rules of collapses are obtained as follow through analyzing the positions and the relationship between collapses and seismic intensity，coseismic fault，lithology and gradient. 1The scales of the collapses are small (≤10 000 m3) or Medium(10 000~100 000 m3). 2From Ⅶ zone to unstricken area，the scale of collapses turn smaller and the concentration of collapses turn lower with the attenuation of seismic intensity. 3The distribution of earthquakeinduced collapses has marked hangingwall effect，for the collapses concentration in the hangingwall of coseismic fault which named Shuangshi-Dachuan Fault nearly twice that in the footwall. 4The collapses mostly formed in granite and sandstone. 5The terrain and engineering activities are main factors which control the development of collapses while the earthquake is an inducing factor. The postearthquake collapses is hysteretic and covert. They will occur along the highway in a very long time under the influence of rainfall and aftershock.

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备注/Memo

备注/Memo:
收稿日期(Received date)：2013-06-28；改回日期(Accepted) : 2013-07-22。
基金项目（Foundation item）：科技部基础研究专项(2011FY110100)。[This research is supported by the Basic Research Project form Ministry of Science and Technology(2011FY110100).]
作者简介（Biography）：高延超(1981-)，男，河北保定人，在职博士，工程师，主要从事滑坡泥石流防治研究和工程勘查设计。[Gao Yanchao(1981-), male, engineer, majoring in the research about the mountain hazards and their prevention.]E-mail: gaoyc@imde.ac.cn
更新日期/Last Update: 1900-01-01