灾害学Issue(3)：218-223,6.DOI:10.3969/j.issn.1000-811X.2014.03.040
汶川强震区群发性泥石流特征研究--以四川省都江堰龙池“8·13”群发泥石流为例
Research on the Characteristics of Group Debris flow Hazards after Wenchuan Earthquake:A Case Study in the Longchi Area of Dujiangyan,Sichuan, China
摘要
Abstract
The secondary disasters of landslide and collapse in Wenchuan Earthquake provide rich sources for debris flow.The occurrence of group debris flow is frequent in the disaster area during the heavy rainfall after the earthquake.In the rainy seasons of 2008,2009 and 2010,meizoseismal areas have breakout mass of group debris flow disasters.esp.group debris flow hazards in Longchi,Dujiangyan,Sichuan Province is one of these disasters. Based on field investigation and analysis,the disasters of 45 debris flow of Longchi in Longxi river basin disasters were firstly elaborated.Then,the relevant characteristics of group debris flow were studied as:(1 )Various rea-sons,Mainly because of the comprehensive effect of earthquake and rainfall;(2)Different scales,Mostly are small and medium types,Most of debris flows are sub-viscous and viscous debris flows;(3 )Most catchments of debris flow were small catchment and gully debris flow;(4 )Most debris flows are distribution in the triggering belt of Wenchuan Earthquake;(5 )The damageable patterns mainly are erosion,deposition and damming river,have haz-ard chain and stack-amplification effect.Finally,we proposed the strategies for mitigation of group debris flow,in-cluding regular monitoring and warning system.关键词
群发泥石流/活动特征/汶川地震/四川都江堰/“8·13”龙池Key words
group debris flow/acting characteristic/Wenchuan earthquake/Dujiangyan/“8·13”Longchi分类
天文与地球科学引用本文复制引用
马煜,余斌,李彩侠,曾晋..汶川强震区群发性泥石流特征研究--以四川省都江堰龙池“8·13”群发泥石流为例[J].灾害学,2014,(3):218-223,6.基金项目
国家自然科学基金资助项目（40871054）；四川省教育厅科研基金 （）
