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[1]LI Jun,CHEN Ning-sheng.Dynamics Parameters of Debris Flows in Guanba River[J].Research of Soil and Water Conservation,2013,20(01):264-268.

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Dynamics Parameters of Debris Flows in Guanba River

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 20 Number of periods: 2013 01 Page number: 264-268 Column: Public date: 2013-02-28

Title:: Dynamics Parameters of Debris Flows in Guanba River

Author(s):: LI Jun¹, CHEN Ning-sheng²; 1. State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China;
2. Institute of Mountain Hazards and Environment, CAS, Chengdu, 610041, China

Keywords:: belt of southeast Tibet; fault lakes; Qionghai; dynamics parameters; prevention and control project

CLC:: P642.23

DOI:: -

Abstract:: The fault lakes around belt of southeast Tibet were influenced by the sediment deposition coming from the erosion of flash flood and debris flows, in which the example was Qionghai. But the problem that sediment severely deposited in Qionghai relied on the prevention and control of flashflood and debris flows. Under this background, the topography of Qionghai drainage and the character of sediment deposition were analyzed, and the dynamics parameters of debris flows were calculated. The debris flows of Guanba river was trasitional viscous. The peak discharge of debris flows was 813.7 m³/s, and the highest dynamic pressure and impact force of massive stone was 147 kPa, 1.63×10⁵ kN, respectively. Above of all, the prevention and control for debris flows was made. Stabilizing slopes of gully and blocking large particles in higher reaches area of Guanba river, reducing fine particles and desilting sediment in lower reaches area of Guanba river should be practiced. This work was useful for prevention and control of debris flows in other fault lakes around belt of southeast Tibet.

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