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[1]SHE Tao,XIE Hong,WANG Shi-ge,et al.Characteristics and Hazard Assessment of Wandong River Debris Flow on East Slope of Gongga Mountain[J].Research of Soil and Water Conservation,2008,15(03):242-245.

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Characteristics and Hazard Assessment of Wandong River Debris Flow on East Slope of Gongga Mountain

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 15 Number of periods: 2008 03 Page number: 242-245 Column: Public date: 2008-06-20

Title:: Characteristics and Hazard Assessment of Wandong River Debris Flow on East Slope of Gongga Mountain

Author(s):: SHE Tao^1,2, XIE Hong¹, WANG Shi-ge¹, KONG Ji-ming¹, LIU Zheng-liang^1,2; 1. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences & Ministry of Water Conservancy, Chengdu 610041, China;
2. Graduate School of the Chinese Academy of Sciences, Beijing 100049, China

Keywords:: debris flow; Wandong river; formation condition; hazard

CLC:: P642.23

DOI:: -

Abstract:: Wandong River is a tributary of the Dadu River on the upper reach,with 170.6 km² of basin area and 137.5‰ of river-bed gradient.By research on formation condition,characteristic of debris flow in main river and tributaries,we know that main river often breaks out low frequency and transitional debris flow,with return period of 50~100 years.Debris flow happened in Yinchang Gully and Banbanpeng Gully are medium-low frequency debris flow,with return period of 10~20 years and 20~30 years for the moderate-scaled debris flows,50~100 years for the large-scaled ones.All of the debris flows in tributaries are viscous.This paper has also discussed debris flow hazard assessment in Wandong River.Yinchang Gully and Banbanpeng Gully are the high hazard debris flow gullies,with the hazard degree of 0.68,0.70,0.61,respectively.

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