不同密实条件的滑坡堰塞坝漫顶溃决实验

doi:10.13722/j.cnki.jrme.2017.1610

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (927 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Two types of indoor flume experiments on the breaching process of the dams in loose and dense conditions respectively were carried out to study the influence of compactness on the mechanism of overtopping erosion of landslide dams. The experimental results show that the compactness has a significant effect on the process of overtopping erosion of landslide dams. Under the loose condition，the dam body suffers mainly from surface erosion，gully erosion，lateral erosion and undercut erosion，while the effect of headward erosion is very limited. The breach flow rate rises and drops fast and the dunes are formed when the dam-breaching is close to completion. The breach side is mainly subjected to shear failure in such a situation. Under the dense condition，multiple over falls and scour pit are formed and the effect of headward erosion is obvious. With the development of headcut erosion，the breach flow transforms from the non-weir flow to broad weir flow and then to practical weir flow. When the multiple over falls merged into a single upstream migrating head cut，the reverse swirling flow is formed which accelerates the failure of dam body. The breach side is mainly subjected to gravitational collapse under such a condition.

Key words： slope engineering landslide landslide dam debris flow overtopping erosion

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	ZHAO Gaowen1
	2
	JIANG Yuanjun1
	QIAO Jianping1
	MENG Huajun3
	YANG Zongji1

Cite this article:

ZHAO Gaowen1,2,JIANG Yuanjun1, et al. Experimental investigation on overtopping failure of landslide dams with different conditions of compactness[J]. , 2018, 37(6): 1496-1505.

URL:

http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2017.1610 OR http://www.rockmech.org/EN/Y2018/V37/I6/1496

[8]	党超，程尊兰，刘晶晶. 泥石流堵塞坝溃决模式实验[J]. 灾害学，2008，23(3)：15-19.(DANG Chao，CHENG Zunlan，LIU Jingjing. Model test of debris-flow dam break[J]. Journal of Catastrophology，2008，23(3)：15-19.(in Chinese))
[18]	MOHAMED M A A. Embankment breach formation and modeling methods[Ph. D. Thesis][D]. England：Open University，2002.
[6]	DAVIES T R，MANVILLE V，KUNZ M，et al. Modeling landslide dambreak flood magnitudes：Case study[J]. Journal of Hydraulic Engineering，2007，133(7)：713-720.
[9]	张婧，曹叔尤，杨奉广，等. 堰塞坝泄流冲刷实验研究[J]. 四川大学学报：工程科学版，2010，42(5)：191-196.(ZHANG Jing，CAO Shuyou，YANG Fengguang，et al. Experimental study on outlet and scour of blocked dam[J]. Journal of Sichuan University：Engineering Science，2010，42(5)：191-196.(in Chinese))
[12]	牛志攀，许唯临，张建民，等. 堰塞湖冲刷及溃决试验研究[J]. 四川大学学报：工程科学版，2009，41(3)：90-95.(NIU Zhipan，XU Weilin，ZHANG Jianmin，et al. Experimental investigation of scour and dam-break of landslide dam[J]. Journal of Sichuan University：Engineering Science，2009，41(3)：90-95.(in Chinese))
[14]	AWAL R，NAKAGAWA H，BABA Y，et al. Experimental study on glacial lake outburst floods due to waves overtopping and erosion of moraine dam[J]. Annuals of Disaster Prevention Research Institute，Kyoto University，2010，53(1)：583-594.
[16]	程谦恭，彭建兵，胡广韬. 高速岩质滑坡动力学[M]. 成都：西南交通大学出版社，1999：58-64.(CHENG Qiangong，PENG Jianbin，HU Guangtao. High speed rockslide dynamics[M]. Chengdu：Southwest Jiaotong University Press，1999：58-64.(in Chinese))
[2]	柴贺军，刘浩吾，刘汉超，等. 天然土石坝稳定性初步研究[J]. 地质科技情报，2001，20(1)：77-81.(CAI Hejun，LIU Haowu，LIU Hanchao，et al. Preliminarily stability analysis of natural rockfield dam resulting from damming landslide[J]. Geological Science and Technology Information，2001，20(1)：77-81.(in Chinese))
[4]	王兰生，杨立铮，李天斌，等. 四川岷江叠溪较场地震滑坡及环境保护[J]. 地质灾害与环境保护，2000，11(3)：195-199.(WANG Lansheng，YANG Lizheng，LI Tianbin，et al. Evolution mechanism of Jiaochang earthquake landslide on Min River and its controlling[J]. Journal of Geological Hazards and Environment Preservation，2000，11(3)：195-199.(in Chinese))
[3]	DAI F C，LEE C F，DENG J H，et al. The 1786 earthquake-triggered landslide dam and subsequent dam-break flood on the Dadu River， southwestern China[J]. Geomorphology，2005，65(3)：205-221.
[13]	张大伟，权锦，何晓燕，等. 堰塞坝漫顶溃决试验及相关数学模型研究[J]. 水利学报，2012，43(8)：979-986.(ZHANG Dawei，QUAN Jin，HE Xiaoyan，et al. Experimental and numerical investigation on overtopping breaching of barrier dam[J]. Journal of Hydraulic Engineering，2012，43(8)：979-986.(in Chinese))
[5]	MIZUYAMA T，SATOFUKA Y，OGAWA K，et al. Estimating the outflow discharge rate from landslide dam outbursts[C]// Proceedings of the Interpraevent International Symposium on Disaster Mitigation of Debris Flows，Slope Failures and Landslides. [S. l.]：[s. n.]，2006，1(2)：365-377.
[15]	胡卸文，黄润秋，施裕兵，等. 唐家山滑坡堵江机制及堰塞坝溃坝模式分析[J]. 岩石力学与工程学报，2009，28(1)：181-189.(HU Xiewen，HUANG Runqiu，SHI Yubin，et al. Analysis of blocking river mechanism of Tangjiashan landslide and dam-breaking mode of its barrier dam[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(1)：181-189.(in Chinese))
[19]	陈仲颐，周景星，王洪瑾. 土力学[M]. 北京：清华大学出版社，1994：178-182.(CHEN Zhongyi，ZHOU Jingxing，WANG Hongjin. Soil mechanics[M]. Beijing：Tsinghua University Press，1994：178-182.(in Chinese))
[7]	WISHART J S. Overtopping breaching of rock balance dam[M. S. Thesis][D]. New Zealand：University of Canterbury，2007.
[17]	CHANG D S，ZHANG L M，XU Y，et al. Field testing of erodibility of two landslide dams triggered by the 12 May Wenchuan earthquake[J]. Landslides，2011，8(3)：321-332.
[1]	COSTA J E，SCHUSTER R L. The formation and failure of natural dams[J]. Geological Society of America Bulletin，1988，100(7)：1 054-1 068.
[10]	张健楠. 沟道内堰塞体溃决形成泥石流的机理及特征研究[硕士学位论文][D]. 成都：成都理工大学，2011.(ZHANG Jiannan. The character and mechanism study on the debris flow cause by dam-break in gully[M. S. Thesis][D]. Chengdu：Chengdu University of Technology，2011.(in Chinese))
[11]	赵万玉，陈晓清，高全，等. 不同横断面泄流槽的地震堰塞湖溃决实验研究[J]. 泥沙研究，2011，4(1)：30-37.(ZHAO Wanyu，CHEN Xiaoqing，GAO Quan，et al. Experimental study of dam-break of earthquake barrier lake with different cross sections of drainage channel[J]. Journal of Sediment Research，2011，4(1)：30-37.(in Chinese))
[20]	杨顺. 水动力作用下泥石流源区固体物质可移动判别模型研究[博士学位论文][D]. 成都：中国科学院水利部成都山地灾害与环境研究所，2014.(YANG Shun. Study on the movable criticle model of solid material under hydro-dynamical condition in debris flow area[Ph. D. Thesis][D]. Chengdu：Institute of Mountain Hazards and Environment，Chinese Academy of Sciences，2014.(in Chinese))