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《Journal of Sichuan University(Engineering Science Edition)》 2009-03
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Advances in Studies of River Sediment and Fluvial Processes of the Upper-Yangtze River in Earthquake Background

CAO Shu-you,LIU Xing-nian,HUANG Er,YANG Ke-jun (State Key Lab.of Hydraulics and Mountain River Eng.,Sichuan Univ.,Chengdu 610065,China)  
Historical earthquakes were one of main dynamic factors for river sediment yield in Chuanjiang catchment,and Wenchuan earthquake in 2008 will further affect its soil erosion,and the trend of river sediment and fluvial processes.Wenchuan earthquake is the largest earthquake in Longmen Mountain area as recorded in the historic documents.The earthquake has changed erosion condition and resources of sediment owing to abundant incompact mass induced dilapidations,landslips,debris flows and barrier lakes.The earthquake has damaged erosion control instructures developed in recent 20 years,and cause more serious erosion.Advances of relative science and technology studies were summarized,which included the relationships between earthquake and catchment sediment yield;sediment amount of rivers in earthquake area;Effects of earthquake to fluvial processes of Chuanjiang water system;River restoration techniques to secondary disasters of earthquakes.It was suggested that further studies are especially required,including strengthen inter-disciplines studies in areas of hydraulic engineering,geo-science,and ecologic and environmental science to explore theory and key techniques of river restoration after earthquake secondary disasters.
【Fund】: 国家自然科学基金重点项目(50739002);; 国家973计划资助项目(2008CB425803)
【CateGory Index】: TV147
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