【摘要】 2009年7月17日,汶川地震重灾区的都江堰市虹口乡小沟流域因强降雨导致了群发性泥石流,造成了重大的财产损失。本文根据现场经历和相关资料,对小沟泥石流的综合成因进行分析,通过对泥石流参数的计算,认为小沟流域的泥石流活动期要持续5a～10a。更多还原

【Abstract】 On July 17 of 2009,during the Wenchuan Earthquake,the mass debris flow caused by heavy rainfall happened at in the hardest hit area—Xiaogou drainage area at the Hongkou Township of Dujiangyan City,which caused the property to be damaged seriously.Based on field experience and relevant information,this paper systematically analyzed the genesis mechanism of the debris flow.By calculating of parameters of the debris flow,it concludes that the active phase of the debris flow will last 5 to 10 years.更多还原