The formation of the Wulipo landslide and the resulting debris flow in Dujiangyan City, China

doi:10.1007/s11629-017-4392-1

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2017 > Vol14 No.6

	The formation of the Wulipo landslide and the resulting debris flow in Dujiangyan City, China
	CHEN Xing-zhang; CUI Yi-fei
刊名	Journal of Mountain Science
	2017-06
卷号	14 期号:6 页码:1100-1112
关键词	Landslide Debris Flow Disaster Chain Effect Heavy Rainfall Geological Hazard Area Wenchuan Earthquake
ISSN号	1672-6316
DOI	10.1007/s11629-017-4392-1
通讯作者	CUI Yi-fei
文献子类	期刊论文
英文摘要	The Wulipo landslide, triggered by heavy rainfall on July 10, 2013, transformed into debris flow, resulted in the destruction of 12 houses, 44 deaths, and 117 missing. Our systematic investigation has led to the following results and to a new understanding about the formation and evolution process of this hazard. The fundamental factors of the formation of the landslide are a high-steep free surface at the front of the slide mass and the sandstone-mudstone mixed stratum structure of the slope. The inducing factor of the landslide is hydrostatic and hydrodynamic pressure change caused by heavy continuous rainfall. The geological mechanical model of the landslide can be summarized as "instability - translational slide - tension fracture - collapse" and the formation mechanism as "translational landslide induced by heavy rainfall". The total volume of the landslide is 124.6×104 m3, and 16.3% of the sliding mass was dropped down from the cliff and transformed into debris flow during the sliding process, which enlarged 46.7% of the original sliding deposit area. The final accumulation area is found to be 9.2×104 m2. The hazard is a typical example of a disaster chain involving landslide and its induced debris flow. The concealment and disaster chain effect is the main reason for the heavy damage. In future risk assessment, it is suggested to enhance the research on potential landslide identification for weakly intercalated slopes. By considering the influence of the behaviors of landslide-induced debris flow, the disaster area could be determined more reasonably.
语种	英语
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/18730]
专题	Journal of Mountain Science _Journal of Mountain Science-2017_Vol14 No.6
推荐引用方式 GB/T 7714	CHEN Xing-zhang,CUI Yi-fei. The formation of the Wulipo landslide and the resulting debris flow in Dujiangyan City, China[J]. Journal of Mountain Science,2017,14(6):1100-1112.
APA	CHEN Xing-zhang,&CUI Yi-fei.(2017).The formation of the Wulipo landslide and the resulting debris flow in Dujiangyan City, China.Journal of Mountain Science,14(6),1100-1112.
MLA	CHEN Xing-zhang,et al."The formation of the Wulipo landslide and the resulting debris flow in Dujiangyan City, China".Journal of Mountain Science 14.6(2017):1100-1112.