[1]罗永忠.“4·20”芦山地震震中龙门乡地质灾害特征[J].山地学报,2014,(01):124.
 LUO Yongzhong.Characteristics of Geological Hazards in Longmen Township by “4·20” Lushan Earthquake,China[J].Mountain Research,2014,(01):124.
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“4·20”芦山地震震中龙门乡地质灾害特征()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2014年01期
页码:
124
栏目:
“4?22”芦山地震
出版日期:
2014-01-01

文章信息/Info

Title:
Characteristics of Geological Hazards in Longmen Township by “4·20” Lushan Earthquake,China
作者:
罗永忠
四川省建筑设计研究院,四川 成都 610017
Author(s):
LUO Yongzhong
Architecture Investigation Designing Institute of Sichuan Province, Chendu 610017, China
关键词:
芦山地震震中地质灾害特征崩塌
Keywords:
Lushan Earthquake epicenter geological hazard character rockfall
分类号:
P642.2
文献标志码:
A
摘要:
"4·20"芦山地震为龙门山断裂带南端上的浅源构造地震,震中位于四川省芦山县龙门乡马边沟,最大烈度达IX度,龙门乡99%以上房屋受损。乡境内因地震形成35处地质灾害,主要类型为滑坡、崩塌,分别占40.0%、60.0%,乡境内5个村有分布。崩塌失稳模式为震动-剥落、震动-拉裂-滑移、震动-拉裂-错落;滑坡失稳模式为震动-拉裂-蠕滑。地震地质灾害除受控于地震触发作用,陡峻的地形、地形与高程放大效应特征突出外,强风化卸荷作用也是地质灾害产生的物质基础。乡境内以崩塌危害较为严重。开展震中地震地质灾害特征研究,预测灾害发展趋势,对灾区安置点规划、灾后3 a恢复重建都将具有重要的指导意义。
Abstract:
“4·20” Lushan Earthquake is a shallow tectonic earthquake in south of Longmen Mountain fracture zone. Its epicenter is located in Mabian gully of Longmen Township Lushan of Sichuan,China. And its seismic intensity reaches to IX degree. The earthquake leads to the damage of 99 percent of houses in Longmen Township. It induced 35 geological hazards. The main types of geological hazards are landslides and rockfall, take account for 40 percent and 60 percent. They happen in five villages of Longmen Township. The rockfall failure mode is vibrationexfoliation, vibrationfracturingsliding and vibrationfracturingscattered. The landslides failure mode is vibrationfracturingcreeping. Besides the earthquake triggering effect the earthquake geological hazards are controlled by the prominent characteristics of steep topography, terrain and elevation amplification effect. And the strongly weathered unloading rock mass are the material basis of geological hazards. Rockfall failure is more severe in Longmen Township than landslides. Geological hazards character research hazard development tendency is of great significance to resettlement plan and reconstruction in hazard areas.

参考文献/References:

[1] Sichuan Lushan Longmen Town, more than 99% of houses collapsed,the affected population 1 520 000, [N/OL]. (2013-4-20). http://www.people.com.cn[四川芦山龙门乡99%以上房屋垮塌、受灾人口152万[N/OL].(2013-04-20)]http://www.people.com.cn]
[2] Luo Yongzhong. Geological hazard research assessment and district report in Lushan county of Sichan Province[R]. Chengdu:Architecture Investigation Designing Institute of Sichuan Province , 2011.5. [罗永忠.四川省雅安市芦山县地质灾害调查评价与区划报告[R].成都:四川省川建勘察设计院,2011.5.]
[3] Luo Yongzhong. “4.20” Ya’an City Lushan Earthquake geological hazards survey and assessment report[R]. Chengdu:Architecture Investigation Designing Institute of Sichuan Province, 2013.5.[罗永忠.4.20雅安市芦山地震芦山县地质灾害隐患点调查评价报告[R].成都:四川省川建勘察设计院,2013.5.]
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备注/Memo

备注/Memo:
收稿日期(Received date):2013-08-01;修回日期(Accepted):2013-12-06。
作者简介(Biography):罗永忠(1966-),男,汉,河南光山人,工程硕士,高级工程师,主要从事地质灾害防治方面的研究。[Luo Yongzhong(1966- ),male, Han, Henan Province, engineering master degree, senior engineer, research area: geological hazards prevention and control.]Phone:13076080313,E-mail:351041227@qq.com
更新日期/Last Update: 1900-01-01