[1]陈源井,余斌,朱渊,等.地震后泥石流临界雨量变化特征——以汶川地震区小岗剑沟为例[J].山地学报,2013,(03):356.
　CHEN Yuanjing,YU Bin,ZHU Yuan,et al.Characteristics of Critical Rainfall of Debris Flow after Earthquake——A Case Study of the Xiaogangjian Gully[J].Mountain Research,2013,(03):356.
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地震后泥石流临界雨量变化特征——以汶川地震区小岗剑沟为例()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2013年03期
页码:
356
栏目:
山地灾害
出版日期:
2013-01-01

文章信息/Info

Title:
Characteristics of Critical Rainfall of Debris Flow after Earthquake——A Case Study of the Xiaogangjian Gully
作者:
陈源井;余斌;朱渊;王涛;亓星;
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):
CHEN Yuanjing; YU Bin; ZHU Yuan; WANG Tao; QI Xing
State Key Laboratory of Geo-hazard Prevention and Geo-environment Protection，Chengdu University of Technology，Chengdu 610059，China
关键词:
小岗剑沟; 泥石流; 地震; 起动机理; 临界雨量
Keywords:
Xiaogangjian Gully;  debris flow;  earthquake;  initiation mechanism;  rainfall threshold
分类号:
P624.23
文献标志码:
A
摘要:
在地震的影响下,泥石流暴发所需的临界降雨条件降低。通过现场调查分析,首先得出小岗剑沟泥石流沟床起动的形成机理及其"地震-滑坡-碎屑堆积-降雨-泥石流"的形成特征,然后在建立了泥石流发生的临界雨量模式基础上,以小岗剑沟泥石流临界雨量为研究对象,采用将其地震前后临界雨量相比较的方法,得到了临界雨量的变化特征,并探索变化的原因。小岗剑沟2010年暴发泥石流的临界雨量约为地震前的21%,2011年暴发泥石流的临界雨量约为地震前的23%,地震后临界雨量大幅度下降。但随着泥石流活动的不断发生,临界雨量有逐渐恢复的趋势。
Abstract:
The triggering thresholds such as cumulative antecedent rainfall and one hour rainfall intensity significantly decreased after earthquake events. The formation mechanism of debris flows in Xiaogangjian Gully of Qingping Township，Mianzhu County，Sichuan Province，China was obtained by field survey and analysis on the initiation of debris flows. The description of “earthquake-landslide-deposits-rainfall-debris flows” was the formation characteristic of debris flow in this gully. Base on the occurrence model of rainfall threshold of debris flow，the drop characteristics of rainfall threshold was obtained by comparing the thresholds of before and after the earthquake. The rainfall threshold of 2010 is only 21% of the rainfall threshold before earthquake，and it is only 23% in 2011. The threshold dropped noticeably right after earthquake events, and rose gradually thereafter.

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备注/Memo

备注/Memo:
收稿日期(Received date)：2013-01-25；改回日期(Accepted)：2013-04-10。
基金项目(Foundation item)：贵州省地质灾害监测预警与决策支持平台研究子项目贵州省泥石流启动机理及预警预报研究（编号 ZG0064）。［Guizhou Province Geological Disaster Monitoring and Early Warning and Decision Support Platform Research Subprojects: Guizhou Province Debris Flow Start Mechanism and Early Warning and Forecasting(No．ZG0064)．］
作者简介（Biography）：陈源井（1987-），男，四川郫县人，硕士研究生，主要从事地质灾害防治相关工作。［Chen Yuanjing( 1987-) ，male，Han nationality，born in Pixian County, Sichuan，graduated student，Undertaking research on prevention of geological disasters．］E-mail:877811775@qq.com
更新日期/Last Update: 1900-01-01