[1]刘清华,唐川,常鸣,等.汶川地震强震区映秀地区泥石流的危险性[J].山地学报,2012,(05):592.
　LIU Qinghua,TANG Chuan,CHANG Ming,et al.Risk of Debris Flow in Epicenter of Wenchuan Earthquake，Yingxiu of Sichuan[J].Mountain Research,2012,(05):592.
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汶川地震强震区映秀地区泥石流的危险性()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2012年05期
页码:
592
栏目:
山地学报
出版日期:
2012-01-01

文章信息/Info

Title:
Risk of Debris Flow in Epicenter of Wenchuan Earthquake，Yingxiu of Sichuan
作者:
刘清华;唐川;常鸣;余斌;
成都理工大学地质灾害防治与地质环境保护国家重点实验室，四川 成都610059
Author(s):
LIU Qinghua; TANG Chuan; CHANG Ming; YU Bin
State Key Laboratory of Geohazard Prevention and Geoenvironment Protection ，Chengdu University of Technology ，Chengdu 610059，China
关键词:
汶川地震区; 降雨频率; 泥石流规模; 平均堆积厚度; 危险性评价
Keywords:
Wenchuan earthquake area;  rainfall frequency;  debris flow scale;  average deposition thickness;  hazard assessment
分类号:
P642.23
文献标志码:
A
摘要:
汶川地震震中四川省汶川县映秀镇及附近于2010-08-14暴发群发性泥石流(简称"8.14"泥石流),造成巨大的人员伤亡和财产损失。地震灾区松散固体物源丰富,泥石流灾害相对活跃,估算未来不同降雨频率下泥石流的暴发规模并评价其危险性,是泥石流灾害风险管制的首要工作。在研究四川省部分地区的泥石流和对应降雨频率资料的基础上,得到泥石流规模和降雨频率之间的关系式。以映秀"8.14"泥石流的暴发规模和降雨频率为基础数据,通过泥石流规模和降雨频率之间的关系式推算得到映秀及附近岷江两岸13条泥石流沟在不同降雨频率下的泥石流规模。以泥石流在堆积扇上的平均堆积厚度(泥石流规模/堆积扇面积)、泥石流发生频率、流域...
Abstract:
Group debris flows occurred on August 14，2010 in Yingxiu area，epicenter of Wenchuan earthquake，Sichuan province，which caused enormous life and property losses. The debris flows are very active because of the abundant loose materials in earthquakestricken areas，it is the primary work for the management and control of debris flow risk to estimate the scale and hazard under different rainfall frequencies in the future. The empirical formula between debris flow scale and rainfall frequency was obtained by collecting and studying the datum. The scales of 13 debris flows under different rainfall frequencies were calculated through the empirical formula with the basic datum of “8.14”debris flows scales and rainfall frequency in Yingxiu area along the Minjiang river. Chosen the average deposition thickness of alluvial fan (scale / alluvial fan area)，occurrence frequency，drainage area，channel length，basin relative height，valley incision density and instability gully cutting proportion as hazard judgment factors，the debris flow hazards of 13 gullies were assessed under the rainfall return period of 100 years，50 years，20 years，10 years and 5 years in Yingxiu area. The results indicated that debris flow hazards of 8 gullies were high under 5 rainfall frequencies，debris flow hazards of 4 gullies were moderate to high under different rainfall frequency，the remaining one was moderate hazard under 5 rainfall frequencies. The method using average deposition thickness on alluvial fan as the variable factor of hazard assessment can better estimate the debris flow hazard in different rainfall frequency.

备注/Memo

备注/Memo:
收稿日期(Received date)：2012-01-10；改回日期(Accepted) : 2012-05-28。
基金项目（Foundation item）：国家科技支撑计划课题“龙门山地震带小流域泥石流滑坡灾害综合风险评价技术研究与示范”(2011BAK12B01)。\[The key projects in the National Science & Technology Pillar Program“Study and Demonstration of Risk Assessment Technology for Debris Flow and Landslide in Small Watershed of Longmenshan Seismic Belt” (2011BAK12B01).\]
作者简介（Biography）：刘清华(1976-)，女，四川中江人，讲师，主要从事泥石流灾害风险研究。\[Liu Qinghua(1976-), female, born in Zhongjiang of Sichuan, lecturer, majoring in risk research of debris flow disaster.\] E-mail：liuqinghua@cdut.cn
更新日期/Last Update: 1900-01-01