芦山地震触发崩塌滑坡的优势方向与机理

段书苏; 姚令侃; 郭沉稳

doi:10.3969/j.issn.0258-2724.2015.03.007

芦山地震触发崩塌滑坡的优势方向与机理

doi: 10.3969/j.issn.0258-2724.2015.03.007

段书苏¹,
姚令侃^1,2,3, ,,
郭沉稳¹

基金项目:

国家自然科学基金资助项目(41172321)

国家自然科学基金重点项目(41030742)

中国铁路总公司科技研究开发计划资助项目(2013G014-A)

详细信息

作者简介:
段书苏(1988-),女,博士研究生,研究方向为铁路公路工程灾害防治及安全技术,电话:13551866104, E-mail:duanshusu@163.com

通讯作者:
姚令侃(1953-),男,教授,博士,研究方向为铁路公路工程灾害防治及安全技术,E-mail:yaolk@swjtu.edu.cn

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出版历程
- 收稿日期: 2014-07-23
- 刊出日期: 2015-06-25

Predominant Direction and Mechanism of Landslides Triggered by Lushan Earthquake

DUAN Shusu¹,
YAO Lingkan^{1,2,3
, ,},
GUO Chenwen¹

摘要

摘要: 利用芦山地震强震记录、水系图和1 754个地震触发崩塌滑坡数据,对芦山地震触发崩塌滑坡的优势方向的控制因素进行了研究.对比分析了崩塌滑坡数的优势方向与研究区自然坡体的优势坡向;基于对抗性原理,确定了芦山震区新构造应力场方向;对崩塌滑坡确定性系数分区进行了分析.认为自然坡体的优势方向是决定崩塌滑坡方向的首要因素,但应考虑不对称地形造成的坡向分异现象;新构造应力场是崩塌滑坡方向的全局性影响因素,地震台站的最大累计加速度方向是其代表区域内崩塌滑坡方向的影响因素.对于盲断层型地震,上述三因素对地震触发崩塌滑坡方向的控制效应可能是具有普适性意义的规律.
- 崩塌滑坡方向 /
- 芦山地震 /
- 确定性系数 /
- 新构造应力场 /
- 最大累积加速度
Abstract: Based on Lushan earthquake records, drainage systems and 1 754 earthquake-induced landslides, control factors of the directions of landslides triggered by earthquake were researched. The dominant direction of landslide number and the dominant aspect of natural slopes were compared; the direction of new tectonic stress field in the Lushan seismic area was determined from the antagonism principle; the certainty factor for landslide in each sub-area was determined by GIS spatial analyses. The research shows that the predominant direction of natural slopes is a control factor of the directions of landslides triggered by an earthquake, but the asymmetry of mountain slope landform should be considered; the direction of new tectonic stress field is a global factor of the directions of landslides; the direction of the maximum cumulative acceleration at a seismic station also control the sensitivity directions of landslides in the station area; to an earthquake resulted from a blind fault, it may be a universal law that the above three factors control the direction of earthquake-triggered landslides.
- landslide direction /
- Lushan earthquake /
- certainty factor /
- new tectonic stress field /
- maximum cumulative acceleration

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参考文献(43)

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文章访问数: 1101
HTML全文浏览量: 71
PDF下载量: 470
被引次数: 0

芦山地震触发崩塌滑坡的优势方向与机理

doi: 10.3969/j.issn.0258-2724.2015.03.007

作者简介: 段书苏(1988-),女,博士研究生,研究方向为铁路公路工程灾害防治及安全技术,电话:13551866104, E-mail:duanshusu@163.com

通讯作者: 姚令侃(1953-),男,教授,博士,研究方向为铁路公路工程灾害防治及安全技术,E-mail:yaolk@swjtu.edu.cn

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Predominant Direction and Mechanism of Landslides Triggered by Lushan Earthquake

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目录

作者简介:
段书苏(1988-),女,博士研究生,研究方向为铁路公路工程灾害防治及安全技术,电话:13551866104, E-mail:duanshusu@163.com

通讯作者:
姚令侃(1953-),男,教授,博士,研究方向为铁路公路工程灾害防治及安全技术,E-mail:yaolk@swjtu.edu.cn