Experiment on distribution and influence factors of uplift pressure acting on bottom of debris flow check dam

doi:10.16285/j.rsm.2016.2670

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 > 山地灾害与地表过程重点实验室

	Experiment on distribution and influence factors of uplift pressure acting on bottom of debris flow check dam
	Chen XZ(陈兴长)1; Chen H(陈慧)1; You Y(游勇)2 ; Liu JF(柳金峰)2
刊名	岩土力学
	2018
卷号	39 期号:9 页码:3229-3237
关键词	扬压力渗透系数泥石流拦砂坝
ISSN号	1000-7598
DOI	10.16285/j.rsm.2016.2670
其他题名	泥石流拦砂坝底扬压力分布及影响因素试验
产权排序	2
英文摘要	The uplift pressure acting on a bottom of debris flow check dam can counteract partial effective weight and reduce the overturning stability of the dam. To study the distribution laws and influence factors of uplift pressure, a check dam model and an acquisition system of uplift pressure were designed and produced. A series of simulation tests of uplift pressure was conducted based on different gully bed slopes and different accumulations in front of the dam heel. The experimental results show that the uplift pressure linearly decreases from dam heel to dam toe. When placing accumulations in front of the dam, the absolute values of correlation coefficients between the uplift pressure and the distance to dam heel exceed 0.98. The uplift pressure decreases with the increase of gully bed slope and the influence of the bed slop on the pressure at the dam heel is greater than that of the dam toe. The permeabilities of materials placed on gully bed and accumulations in front of the dam all have impacts on uplift pressure. The lower their permeabilities are, the lower the uplift pressure will be. The permeability of accumulation in front of the dam heel also has a marked impact on the distribution laws of uplift pressure; and the lower the permeability is, the more obvious the distribution laws are. These research results will be the basis of further study on process and mechanism of uplift pressure acting on a bottom of check dam. © 2018, Science Press. All right reserved.
语种	中文
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/24211]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
通讯作者	You Y(游勇)
作者单位	1.西南科技大学环境与资源学院，四川绵阳 621010; 2.中国科学院水利部成都山地灾害与环境研究所，四川成都 610041
推荐引用方式 GB/T 7714	Chen XZ,Chen H,You Y,et al. Experiment on distribution and influence factors of uplift pressure acting on bottom of debris flow check dam[J]. 岩土力学,2018,39(9):3229-3237.
APA	陈兴长,陈慧,游勇,&柳金峰.(2018).Experiment on distribution and influence factors of uplift pressure acting on bottom of debris flow check dam.岩土力学,39(9),3229-3237.
MLA	陈兴长,et al."Experiment on distribution and influence factors of uplift pressure acting on bottom of debris flow check dam".岩土力学 39.9(2018):3229-3237.