【摘要】 连山大桥泥石流位于四川省汶川县,受汶川地震影响,流域内崩滑产生的松散固体物增多,使泥石流易发程度增大。2013年7月,受连续强降雨的影响,该流域内爆发一系列规模不等的泥石流。通过对泥石流现场调查搜集的资料,对连山大桥泥石流的发生条件以及动力学特征进行具体分析,并对连山大桥泥石流进行了危险性评价,得出如下结论:连山大桥泥石流为暴雨沟谷型泥石流,正处于发展期,表现为极易发、高度危险,在强降雨或余震的影响下暴发泥石流的可能性较大。更多还原

【Abstract】 Lianshan Bridge debris flow is located in Wenchuan county,Sichuan province.Affected by Wenchuan earthquake,the growing loose deposits give rise to the susceptibility of debris flow.A series of different scales of debris-flows break out in this gully caused by continuous strong rainfalls in July 2013.Based on site investigation,a detail analysis on occurrence conditions and dynamics characteristics of Lianshan bridge debris-flow is conducted,the risk assessment of the debris-flow is performed.Finally,a conclusion is drawn that LIanshan bridge debris flow is a strong rainfall gully type which is under developing stage,highly dangerous,and easily reoccur during strong rainfall or aftershock.更多还原