Heavy rainfall triggered loess-mudstone landslide and subsequent debris flow in Tianshui, China

doi:10.1016/j.enggeo.2014.08.015

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 特提斯研究中心

	Heavy rainfall triggered loess-mudstone landslide and subsequent debris flow in Tianshui, China
	Peng, Jianbing 1; Fan, Zhongjie 1; Wu, Di 1; Zhuang, Jianqi 1; Dai, Fuchu 2; Chen, Wenwu 3; Zhao, Cheng 4
刊名	ENGINEERING GEOLOGY
	2015-02-24
卷号	186 页码:79-90
关键词	Loess-mudstone Landslide Debris Flow Heavy Rainfall Formation Process
DOI	10.1016/j.enggeo.2014.08.015
文献子类	Article
英文摘要	Continuous and heavy precipitation triggered a large loess landslide at the southern Dagou Village of Mapaoquan Town, Tianshui City, Gansu Province of China on July 21, 2013. The landslide debris rapidly turned into a debris flow that was deposited in the ravine mouth with the volume of 1.9 x 10(5) m(3). Detailed field mapping, three-dimensional laser scanning, aerial photograph interpretation, and laboratory tests were carried out to study the formation and moving characteristics of the landslide and subsequent debris flow. The results showed that: 1) The peak flow velocity and peak discharge of the debris flow were estimated to be approximately 72 m/s and 730 m(3)/s, respectively. The velocity had a tendency to first increase and then decrease from the head to entrance in the Dagou gully. 2) The analysis of rainfall conditions showed that the effective antecedent rainfall within 7 days and hourly rainfall intensity which triggered the slide-debris flows was 239 mm and 20 mm/h, respectively. Compared with the critical rainfall in this area, the effective antecedent rainfall was found to be more significant in triggering this event. 3) The mean and effective particle sizes were approximately 0.73-1.3 mm and 0.036-0.087 mm, respectively, and had the same distribution along the gully as the velocity, which confirmed the process of the variation in the flow velocity. 4) The scale amplification was very obvious in the formation and moving process of the slide-debris flows. (C) 2014 Elsevier B.V. All rights reserved.
WOS关键词	PROVINCE
WOS研究方向	Engineering ; Geology
语种	英语
WOS记录号	WOS:000351649500009
资助机构	National Natural Science Foundation of China(41130753) ; National Natural Science Foundation of China(41130753) ; National Basic Research Program of China (973 program)(2014CB744700) ; National Basic Research Program of China (973 program)(2014CB744700) ; National Natural Science Foundation of Youth(41302250) ; National Natural Science Foundation of Youth(41302250) ; Central University Fund Project(2013G1261057) ; Central University Fund Project(2013G1261057) ; National Natural Science Foundation of China(41130753) ; National Natural Science Foundation of China(41130753) ; National Basic Research Program of China (973 program)(2014CB744700) ; National Basic Research Program of China (973 program)(2014CB744700) ; National Natural Science Foundation of Youth(41302250) ; National Natural Science Foundation of Youth(41302250) ; Central University Fund Project(2013G1261057) ; Central University Fund Project(2013G1261057)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/62566]
专题	地质与地球物理研究所_特提斯研究中心
作者单位	1.Changan Univ, Dept Geol Engn, Xian 710054, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Lanzhou Univ, Dept Civil Engn, Lanzhou 730000, Gansu, Peoples R China 4.Lanzhou Univ, Gansu Inst Geoenvironm Monitoring, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Peng, Jianbing,Fan, Zhongjie,Wu, Di,et al. Heavy rainfall triggered loess-mudstone landslide and subsequent debris flow in Tianshui, China[J]. ENGINEERING GEOLOGY,2015,186:79-90.
APA	Peng, Jianbing.,Fan, Zhongjie.,Wu, Di.,Zhuang, Jianqi.,Dai, Fuchu.,...&Zhao, Cheng.(2015).Heavy rainfall triggered loess-mudstone landslide and subsequent debris flow in Tianshui, China.ENGINEERING GEOLOGY,186,79-90.
MLA	Peng, Jianbing,et al."Heavy rainfall triggered loess-mudstone landslide and subsequent debris flow in Tianshui, China".ENGINEERING GEOLOGY 186(2015):79-90.