[1]HUANG Hai,SHI Sheng-wei,XIE Zhong-sheng.Occurrence Characteristics and Preventions of the Debris Flow on Slope in the Lower Reaches Zagunao River[J].Research of Soil and Water Conservation,2013,20(06):111-116.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
20
Number of periods:
2013 06
Page number:
111-116
Column:
Public date:
2013-12-28
- Title:
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Occurrence Characteristics and Preventions of the Debris Flow on Slope in the Lower Reaches Zagunao River
- Author(s):
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HUANG Hai1,2, SHI Sheng-wei1,2, XIE Zhong-sheng1,2
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1. Technical Center for Geological Hazard Prevention and Control, CGS, Chengdu 611734, China;
2. Institute of Exploration Technology, CAGS, Chengdu 611734, China
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- Keywords:
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Zagunao River; slope debris flows; formation mechanism; strained condition; prevention countermeasures
- CLC:
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P642.23
- DOI:
-
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- Abstract:
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Base on the research of the downstream region of Zagunao River, the arid valley slope debris flow conditions, the process of formation mechanism of the solid material, and the affection mechanism of the different marerials were analyzed. The slope mud rock flows were divided into four types such as slump-type, channel erosion type, slope erosion type and plane erosion type based on the characteristics of solid material. By analysis of soil slope disaster caused by mechanical process, mechanism of debris flow start, coupled relationship between the three explores the critical state of instability and cause instability of soils of key external factors, the startup process of debris flow mechanism of water-soil interaction and mutual influence were revealed. The results showed that under the similar hydraulic conditions and topography, frequency, size of slope debris flow and disaster were controlled by spatial distribution of surface soil from the slope and stress. The resulting force procedures and protection of objects based on source optimization control model were put forward and references were provided for debris flow control slope with imilar underlying surface conditions in arid river valley region in northwest Sichuan.