Occurrence Conditions and Process Analysis on Fluidization of Valley Type Landslide： Example of the Fluidization of Landslide in Qiongshan Ravine, Danba

• Published in: Wuhan University journal of natural sciences Vol. 11; no. 4; pp. 829 - 834
• Main Authors: Jiming, Kong, Zefu, Chen, Shuzhi, Song
• Format: Journal Article
• Language: English
• Published: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China%Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China 01.07.2006; Graduate University of the Chinese Academy of Sciences, Beijng 100049, China
• Subjects: 丹巴地区; 产出条件; 产出过程; 流体化; Danba in Sichuan Province; fluidization of landslide; occurrence process; occurrence condition
• ISSN: 1007-1202; 1993-4998
• DOI: 10.1007/bf02830172

A big debris flow which was arosed by landslide occurrence at night on July 11, 2003 in Qiongshan Ravine, Danba, Sichuan Province. According to the research, debris flow in Qiongshan Ravine is arosed by the fluidization of landslide. It had been rained about 70 days before debris flow occurred. That made the sediments in the gully to near to saturated or saturated in water. Being affect by the steep geography, the sediments occurrence peristalsis to transform, parts of soil bodies start disintegrate. All the sediments become transforming with water inleakaging to sediments, and than foreside slope flow to gully quickly after becoming fluidization. And the sediments come into being the debris flow with the water of the gully joining.