震后G318泸定段唐房沟泥石流治理研究

Study on Debris Flow Cconrtol of Tangfang Gully in Luding Section of G318 After the Earthquake

汶川“5.12”、芦山“4.20”地震后,对于泥石流地震破坏表现为同震破坏和间接破坏,间接破坏是其主要破坏形式,表现为激活、加剧和新生。通过对G318泸定段唐房沟泥石流地震破坏的研究、泥石流形成条件的分析、灾害历史和危害性的调查、运动特征的计算,提出设置“4座拦砂坝+防护堤、排导槽”的综合治理措施。

After the Wenchuan“5.12”and Lushan“4.20”earthquakes,the seismic damage of debris flow shows co seismic damage and indirect damage.Indirect damage is the main form of damage,which shows activation,intensification and rebirth.Based on the research on the earthquake damage of debris flow in Tangfang gully of G318 Luding section,the analysis of the formation conditions of debris flow,the investigation of disaster history and harmfulness,and the calculation of movement characteristics,the comprehensive control measures of“four sand retaining dams+protective dikes and drainage channels”are put forward.