scholarly journals A Condition of Occurrence On The Roll Waves Of Viscous Debris Flow

2004 ◽  
Vol 7 ◽  
pp. 813-820 ◽  
Author(s):  
Muneyuki ARAI ◽  
Xuelan LIU ◽  
Nobuhiko TAHARA
Keyword(s):  
Debris Flow ◽  
Roll Waves ◽  
Viscous Debris Flow

Quantitative investigation of sediment regulation performance of slot-check dam on viscous debris flow

2021 ◽  
Vol 14 (14) ◽  
Author(s):  
Jinfeng Liu ◽  
Huaquan Yang ◽  
Wenbing Zhou ◽  
Yong You ◽  
Hao Sun ◽  
...  
Keyword(s):  
Debris Flow ◽  
Check Dam ◽  
Quantitative Investigation ◽  
Viscous Debris Flow

The optimal cross-section design of the “Trapezoid-V” shaped drainage canal of viscous debris flow

2011 ◽  
Vol 8 (1) ◽  
pp. 103-107 ◽  
Author(s):  
Yong You ◽  
Huali Pan ◽  
Jinfeng Liu ◽  
Guoqiang Ou
Keyword(s):  
Debris Flow ◽  
Cross Section ◽  
Drainage Canal ◽  
Viscous Debris Flow ◽  
Section Design

scholarly journals Glacier lake outburst floods of the Guangxieco Lake in 1988 in Tibet, China

2013 ◽  
Vol 1 (5) ◽  
pp. 4605-4634 ◽  
Author(s):  
J. J. Liu ◽  
Z. L. Cheng ◽  
Y. Li
Keyword(s):  
Global Warming ◽  
Debris Flow ◽  
Satellite Images ◽  
High Elevation ◽  
Viscous Debris Flow ◽  
Outburst Floods ◽  
Glacial Lake Outburst Floods ◽  
Ice Avalanche ◽  
Archive Material

Abstract. Glacial lake outburst floods (GLOFs) have become more frequent and attracted more and more attention under conditions of global warming. However, there are few observations of the reasons for outbursts and their processes because of their unexpected occurrence and their inaccessible location in high-elevation areas. The GLOF of the Guangxieco Lake, which is the only outburst lake below an elevation of 4000 m in Tibet, provides a case study for discussing the reasons for outbursts. This paper reconstructs the process in detail using geomorphological evidence, interviews of the local inhabitants, archive material and satellite images. It was found that: (1) There were three main reasons for the GLOF in 1988: intense pre-precipitation and persistent high temperatures before the outburst, ice avalanche by rapid movement of the Gongzo Glacier and low self-stability of the end-moraine dam by perennial piping. (2) The GLOF with the peak discharge of 1270 m3 s-1 was evolved along the Midui Valley following sediment-laden flow–non-viscous debris flow–viscous debris flow–non-viscous debris flow–sediment-laden flood. Eventually the sediment-laden floods blocked the Palongzangbu River. (3) Comparing the conditions for the outburst in 1988 and at present, the possibility of a future outburst is thought to be small unless the glacier moves rapidly again.

The Calculating Method of Deposition Thickness of Viscous Debris Flow

2012 ◽  
Vol 524-527 ◽  
pp. 808-812
Author(s):  
Yong You ◽  
Xue Ping Lin ◽  
Jin Feng Liu
Keyword(s):  
Debris Flow ◽  
Calculation Method ◽  
Flow Cell ◽  
Force Analysis ◽  
Slope Gradient ◽  
Calculating Method ◽  
Maximum Value ◽  
Viscous Debris Flow ◽  
Deposition Thickness ◽  
Theoretical Mechanics

The deposition thickness is one of the most important parameters of debris flow. How to define the deposition shape along the viscous debris flow gully and how to calculate deposition thickness rationally were rarely studied in previous researches. This paper discussed the calculation method of deposition thickness of viscous debris flow based on theoretical deduction. Firstly, force analysis was carried out for a debris flow cell selected from the deposition. Then, the formula for calculating the deposition thickness of viscous debris flow was constructed based on deduction from the viewpoint of theoretical mechanics. At last, the deposition thickness under different slope gradients, yield stresses and densities was calculated based on the deduced formula. The results showed that the deposition thickness decreases with the increasing of the slope gradient and density, and increases with the increasing of the yield stress before the deposition thickness reaches to the maximum value.

Natural consolidation characteristics of viscous debris flow deposition

2016 ◽  
Vol 13 (10) ◽  
pp. 1723-1734 ◽  
Author(s):  
Song-Tang He ◽  
Dao-Jie Wang ◽  
Shun Chen ◽  
Shu-Juan Zhang ◽  
Shi-Qiu Chang
Keyword(s):  
Debris Flow ◽  
Viscous Debris Flow

scholarly journals The 1988 glacial lake outburst flood in Guangxieco Lake, Tibet, China

2014 ◽  
Vol 14 (11) ◽  
pp. 3065-3075 ◽  
Author(s):  
J.-J. Liu ◽  
Z.-L. Cheng ◽  
Y. Li
Keyword(s):  
Debris Flow ◽  
Discharge Rate ◽  
Glacial Lake ◽  
Outburst Flood ◽  
Field Surveys ◽  
Terminal Moraine ◽  
Viscous Debris Flow ◽  
Local Residents ◽  
Glacial Lake Outburst Flood ◽  
Major Factors

Abstract. The 1988 glacial lake outburst flood (GLOF) in Guangxieco Lake is studied based on geomorphological evidence, interviews with local residents, field surveys in 1990 and 2007, and satellite images from different years. The findings are as follows. (1) The outburst event was caused by two major factors, namely, intense pre-precipitation and persistent high temperatures before the outburst and the low self-stability of the terminal moraine dam as a result of perennial piping. (2) The GLOF, with the peak discharge rate of 1270 m3 s−1, evolved along Midui Valley in the following order: sediment-laden flow, viscous debris flow, non-viscous debris flow, and sediment-laden flood, which was eventually blocked by Palongzangbu River. (3) A comparison between the conditions during the outburst in 1988 and the present conditions suggests a small possibility of a future outburst unless drastic changes occur in landscape and climate. Reconstructing the outburst conditions and the GLOF processes is helpful in assessing a potential outburst in glacier lakes in Tibet.

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