气候变化领域集成服务门户(CCPortal): A siphon drainage method for stabilizing bank slopes under water drawdown condition

CCPortal

DOI	10.1007/s11069-020-04399-6
	A siphon drainage method for stabilizing bank slopes under water drawdown condition
	Yu Y.; Lv C.; Wang D.; Ge Q.; Sun H.; Shang Y.
发表日期	2021
ISSN	0921030X
起始页码	2263
结束页码	2282
卷号	105 期号:2
英文摘要	Drawdown of reservoir water level is unfavorable to the bank slope stability due to the large seepage force. In this paper, the siphon drainage method is proposed to decrease the water table as well as the seepage force in the bank slope. The novelty of the siphon drainage used in the bank slope is that it will automatically start working when the drawdown of the reservoir water level occurs. To validate the feasibility of the proposed method, a numerical method which combines GeoStudio and spreadsheet is used to investigate the pore water pressure distribution and evaluate the safety of the bank slope. The “air element method” is adopted in GeoStudio to simulate siphon drains. Chen-Morgenstern generalized equations are modified to consider the hydrostatic force of reservoir water and the suction strength of unsaturated soil. The modified equations are then incorporated in the spreadsheet to calculate the FOS of the bank slopes with siphon drains. The proposed method is illustrated and validated with the Shuping landslide, China. The advantages of the siphon drains are also discussed by comparing with traditional horizontal drains. © 2020, Springer Nature B.V.
关键词	Bank slope Numerical simulation Siphon drains Water drawdown
英文关键词	computer simulation; drain; drainage; drawdown; numerical model; seepage; slope stability; stabilization; water table; Chen chen
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206695
作者单位	Ocean College, Zhejiang University, Zhejiang Province, Zhoushan, 316021, China; College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058, China
推荐引用方式 GB/T 7714	Yu Y.,Lv C.,Wang D.,et al. A siphon drainage method for stabilizing bank slopes under water drawdown condition[J],2021,105(2).
APA	Yu Y.,Lv C.,Wang D.,Ge Q.,Sun H.,&Shang Y..(2021).A siphon drainage method for stabilizing bank slopes under water drawdown condition.Natural Hazards,105(2).
MLA	Yu Y.,et al."A siphon drainage method for stabilizing bank slopes under water drawdown condition".Natural Hazards 105.2(2021).