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Title: Influence of water level fluctuation on phreatic line in silty soil model slope

Authors: Yan, ZL; Wang, JJ; Chai, HJ

Author Full Names: Yan, Zong-Ling; Wang, Jun-Jie; Chai, He-Jun

Source: ENGINEERING GEOLOGY 113 (1-4): 90-98 MAY 12 2010

Language: English

Document Type: Article

Author Keywords: Phreatic line; Rising and lowering water level; Model testing

KeyWords Plus: AREA

Abstract: The water level fluctuation may affect the phreatic line in the waterfront soil slopes. In order to investigate the influence, three slope models were made using the silty soil. Four testing schemes for rising water level and three for lowering water level were done. The testing results indicated that such factors as the horizontal distance from the piezometer tube to the intersection of the slope surface and water level, the saturated state of the soil mass, and the rate of the water level fluctuation, might affect the changing rate of the water table in the piezometer tube. The comparison of the results obtained from the present approach with [Zhang Y.-Y. and Hu, X.-W., 2007. Calculation of saturation line of groundwater under reservoir water table uniform rising. Hydrogeology and Engineering Geology, 2007(5): 46-49. (in Chinese)] indicated that the works of Zhang and Hu (2007) may overestimate the elevation of the phreatic line under uniform rising conditions. The compari! son of the results from the present approach with [Zheng, Y.-R, Shi, W.-M., and Kong W.-X., 2004. Calculation of seepage forces and phreatic surface under drawdown conditions. Chinese Journal of Rock Mechanics and Engineering, 23(18): 3203-3210. (In Chinese)] indicated that the works of Zheng et al. (2004) might estimate reasonably the elevation of the phreatic line under uniform lowering conditions, but when the lowering rate of the water level is very large, the works of Zheng et al. (2004) may underestimate the phreatic line. (C) 2010 Elsevier B.V. All rights reserved.

Reprint Address: Wang, JJ, Chongqing Jiaotong Univ, Chinese Minist Educ, Key Lab Hydraul & Waterway Engn, 66 Xuefu Rd, Chongqing 400074, Peoples R China.

Research Institution addresses: [Wang, Jun-Jie] Chongqing Jiaotong Univ, Chinese Minist Educ, Key Lab Hydraul & Waterway Engn, Chongqing 400074, Peoples R China; [Yan, Zong-Ling; Chai, He-Jun] China Merchants Chongqing Communt Res & Design In, Chongqing 400067, Peoples R China; [Wang, Jun-Jie] Logist Engn Univ, Dept Architecture & Civil Engn, Chongqing 400041, Peoples R China

E-mail Address: yanzongling@yahoo.com.cn; wangjunjiehhu@163.com; chaihejun@ccrdi.cmhk.com

Funding Acknowledgement: Chinese Ministry of Transport [200831874006]; Chongqing Science & Technology Commission of China [CSTC2009BA6001]; Science Foundation of Postdoctors in China [200902284]; Key Project of Chinese Ministry of Education [208114]

Funding Text: The authors gratefully acknowledge the financial supports from the Science and Technology Project of Chinese Ministry of Transport under grant no. 200831874006, from the Natural Science Foundation Project of Chongqing Science & Technology Commission of China under grant no. CSTC2009BA6001, from the Science Foundation of Postdoctors in China under grant no. 200902284, and from the Key Project of Chinese Ministry of Education under grant no. 208114, respectively.

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Cited Reference Count: 12

Times Cited: 0

Publisher: ELSEVIER SCIENCE BV; PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS

Subject Category: Engineering, Geological; Geosciences, Multidisciplinary

ISSN: 0013-7952

DOI: 10.1016/j.enggeo.2010.02.004

IDS Number: 611HQ