Observations from the large, rapid Yigong rock slide – debris avalanche, southeast Tibet

2012 ◽  
Vol 49 (5) ◽  
pp. 589-606 ◽  
Author(s):  
Qiang Xu ◽  
Yanjun Shang ◽  
Theo van Asch ◽  
Shitian Wang ◽  
Zhuoyuan Zhang ◽  
...  
Keyword(s):  
High Speed ◽  
Landslide Dam ◽  
Debris Avalanche ◽  
Dam Failure ◽  
Excess Pore Pressure ◽  
Rock Slide ◽  
Long Run ◽  
Landslide Event ◽  
Slide Debris ◽  
Sand Boils

The Yigong rock slide – debris avalanche (YRA), which occurred on 9 April 2000, received worldwide attention as one of the largest nonseismic landslides in recent years, with a volume of 0.3 × 109 m3. Sixty-two days after this landslide event, a catastrophic flood happened because of landslide dam failure. One of the special features of this debris avalanche is liquefaction, which plays an important role in the entrainment and long run-out distance and high-speed movement of the debris avalanche. Numerous sand boils were found in the deposition zone, providing strong evidence for liquefaction. The YRA provides the first actual evidence for a theoretical model where the mechanisms of excess pore pressure and liquefaction induced by undrained loading, and entrainment and dissipation control the run out and deposition of the debris avalanche. The damage mode to trees and the presence of debris cones or molards with a rounded top is proven to be the result of strong air waves and eddies. These features all imply that the YRA is a solid–liquid–air mixed-debris avalanche.

The 17 February 2006 rock slide-debris avalanche at Guinsaugon Philippines: a synthesis

2009 ◽  
Vol 68 (2) ◽  
pp. 201-213 ◽  
Author(s):  
Richard H. Guthrie ◽  
Stephen G. Evans ◽  
Sandra G. Catane ◽  
Mark A. H. Zarco ◽  
Ricarido M. Saturay
Keyword(s):  
Debris Avalanche ◽  
Rock Slide ◽  
Slide Debris

The 17 February 2006 Guinsaugon rock slide-debris avalanche, Southern Leyte, Philippines: deposit characteristics and failure mechanism

2008 ◽  
Vol 67 (3) ◽  
Author(s):  
Sandra G. Catane ◽  
Hillel B. Cabria ◽  
Mark Albert H. Zarco ◽  
Ricarido M. Saturay ◽  
Aileen A. Mirasol-Robert
Keyword(s):  
Failure Mechanism ◽  
Debris Avalanche ◽  
Rock Slide ◽  
Slide Debris ◽  
Deposit Characteristics

AN INTEGRATED APPROACH TO PREDICT OUTFLOW HYDROGRAPH DUE TO LANDSLIDE DAM FAILURE BY OVERTOPPING AND SLIDING

2008 ◽  
Vol 52 ◽  
pp. 151-156 ◽  
Author(s):  
Ripendra AWAL ◽  
Hajime NAKAGAWA ◽  
Kenji KAWAIKE ◽  
Yasuyuki BABA ◽  
Hao ZHANG
Keyword(s):  
Landslide Dam ◽  
Integrated Approach ◽  
Dam Failure ◽  
Outflow Hydrograph

scholarly journals Contributing factors to the failure of an unusually large landslide triggered by the 2014 Ludian, Yunnan, China, <i>M</i><sub>s</sub>  =  6.5 earthquake

2016 ◽  
Vol 16 (2) ◽  
pp. 497-507 ◽  
Author(s):  
Z. F. Chang ◽  
X. L. Chen ◽  
X. W. An ◽  
J. W. Cui
Keyword(s):  
Crustal Deformation ◽  
Landslide Dam ◽  
Debris Avalanche ◽  
Contributing Factors ◽  
Ground Shaking ◽  
Field Investigations ◽  
Rock Structure ◽  
Large Landslide ◽  
Weak Interlayer ◽  
Steep Slopes

Abstract. The 3 August 2014 Ludian, China, Ms  =  6.5 earthquake caused many large landslides. The biggest occurred at Hongshiyan near the epicenter, had a volume of 1.0  ×  107 m3 and dammed the Niulanjiang River, creating a large lake. Post-event field investigations yielded detailed data on the following aspects: rock structure of the landslide, the local lithology and geometry of the area around the landslide dam and composition and grain sizes of the debris avalanche. Based on these data, this work analyzes the geology and topography of the Hongshiyan area, and explores reasons for the occurrence of an unusually large landslide at this location. Our analysis suggests the following conditions are responsible for this catastrophic event. (1) Due to recent crustal deformation, intense incision on the river increased topographic relief with steep slopes and scarps. (2) Combined structures, including unloading fissures, high-angle joints and low-angle beds along the river, as well as an upper-strong and lower-weak interlayer structure on the slope, especially the existence of weak layers in the slope, are important factors that contribute to this large failure. (3) Hongshiyan lies near an active fault, where intense crustal deformation has resulted in rock fractures and weathering, and frequent earthquakes may progressively reduce the strength of the slope. (4) During the Ms  =  6.5 earthquake, the terrain and site conditions led to abnormally strong ground shaking. The combined impacts of these factors triggered a very large landslide during a moderate-sized earthquake.

scholarly journals Cotton Imports and GDP of Indonesia- Cointegration Analysis

2021 ◽  
pp. 149-154
Author(s):  
P. Soumya ◽  
R. A. Yeledhalli
Keyword(s):  
High Speed ◽  
Cointegration Analysis ◽  
Causality Analysis ◽  
The Real ◽  
Real Gdp ◽  
Use Of Technology ◽  
Long Run ◽  
Negative Effect ◽  
The Government ◽  
The Impact

The study examines the impact of cotton imports on the real GDP (Gross Domestic Product) of Indonesia for a period from 1992 to 2018 using ARDL approach and Granger causality analysis. Results of the study indicated that cotton imports have negative effect on economic growth. For every 1% increase in cotton imports the real GDP decreased by 0.107% in the long run. Any disequilibrium in the model is adjusted with a high speed of adjustment of 107.7% in less than a year. Shocks and the trend are adjusted in less than one year. There is no causality between imports of cotton and the real GDP. The study suggested effort should be taken by the government to increase yield of cotton by the use of technology and also a need to initiate farmers to take up cotton farming. 

Landslide Dam Failure Analysis Using Imaging and Ranging Sensors

2021 ◽  
pp. 3-17
Author(s):  
Keivan Tavakoli ◽  
Ehsan Zadehali ◽  
Arsalan Malekian ◽  
Sara Darsi ◽  
Laura Longoni ◽  
...  
Keyword(s):  
Failure Analysis ◽  
Landslide Dam ◽  
Dam Failure
Sign in / Sign up

Export Citation Format

Share Document