【摘要】 5.12汶川地震和2010年8.13、8.19暴雨使龙池镇龙溪河两岸山体暴发了大规模群发性泥石流。为分析此次泥石流暴发原因,以冷浸沟泥石流为例,通过对冷浸沟的地形、水源、物源条件的调查分析,计算了该泥石流流速、峰值流量、固体冲出量等动力学参数,并评价了冷浸沟的危险度,得出泥石流的危险度为0.52,属于中度危险。更多还原

【Abstract】 5.12 Wenchuan Earthquake and the storm on 13 and 19 August,2010 resulted in the large-scale outbreak of debris flows in the mountains along the Longxi River in Longchi Town.In order to analyze the causes of the debris flows,a typical debris flow of the Lengjin Gully is studied as an example.Through the investigation and analysis of the ditch topography,water sources,matter sources,the dynamic parameters of debris flow are calculated,such as debris flow velocity,peak capacity,sediment flush-out of the debris flow.And then evaluate the hazard degree of Lengjin Gully is evaluated.It is concluded that the hazard degree of the debris flow is 0.52,which belongs to the moderate risk of debris flow.更多还原