Laboratory Investigation of the Seepage Control Measures under Coastal Dikes
In the present study, the effects of seepage control measures under coastal dikes have been experimentally investigated. For the purpose of the study a laboratory model hydraulic flume 8.65 m long, 1 m deep, and 1 m wide was employed. The coastal dike was assumed as impermeable and made of a stainle...
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| Veröffentlicht in: | Experimental techniques (Westport, Conn.) Conn.), 2012-01, Vol.36 (1), p.61-71 |
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| creator | Sedghi-Asl, M. Rahimi, H. Khaleghi, H. |
| description | In the present study, the effects of seepage control measures under coastal dikes have been experimentally investigated. For the purpose of the study a laboratory model hydraulic flume 8.65 m long, 1 m deep, and 1 m wide was employed. The coastal dike was assumed as impermeable and made of a stainless-steel sheet of trapezoidal shape. The experiments were carried out employing five upstream and one downstream water levels. Besides, four different depths of sheet piles and four different lengths of impermeable blanket were used as seepage control measures. Results of the experiments were recorded at various points at the downstream foundation of the dike. The results indicated that the integrated application of two of the seepage control measures had more significant effect on reduction of uplift pressure. The results of the current study and two old empirical methods, that is Bligh and Lane, indicated that the Lane method underestimates the magnitude of uplift pressure and risk of piping in comparison with the Bligh’s method. Finally, the optimal values for impermeable blanket length and cut-off depth for minimizing the uplift pressure were determined. |
| doi_str_mv | 10.1111/j.1747-1567.2010.00692.x |
| format | Article |
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For the purpose of the study a laboratory model hydraulic flume 8.65 m long, 1 m deep, and 1 m wide was employed. The coastal dike was assumed as impermeable and made of a stainless-steel sheet of trapezoidal shape. The experiments were carried out employing five upstream and one downstream water levels. Besides, four different depths of sheet piles and four different lengths of impermeable blanket were used as seepage control measures. Results of the experiments were recorded at various points at the downstream foundation of the dike. The results indicated that the integrated application of two of the seepage control measures had more significant effect on reduction of uplift pressure. The results of the current study and two old empirical methods, that is Bligh and Lane, indicated that the Lane method underestimates the magnitude of uplift pressure and risk of piping in comparison with the Bligh’s method. Finally, the optimal values for impermeable blanket length and cut-off depth for minimizing the uplift pressure were determined.</description><identifier>ISSN: 0732-8818</identifier><identifier>EISSN: 1747-1567</identifier><identifier>DOI: 10.1111/j.1747-1567.2010.00692.x</identifier><identifier>CODEN: EXPTD2</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Publishing Ltd</publisher><subject>Blanket ; Blanketing ; Characterization and Evaluation of Materials ; Chemistry and Materials Science ; Coastal ; Coastal Dikes ; Dams ; Dikes ; Hydraulics ; Hydrocarbon leakage & seepage ; Lanes ; Materials Science ; Pressure ; Reduction ; Risk ; Seepage ; Sheet Pile ; Technical Article ; Uplift Pressure</subject><ispartof>Experimental techniques (Westport, Conn.), 2012-01, Vol.36 (1), p.61-71</ispartof><rights>Society for Experimental Mechanics, Inc. 2011</rights><rights>2011, University of Tehran. © 2011, Society for Experimental Mechanics</rights><rights>Copyright Blackwell Publishing Ltd. 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For the purpose of the study a laboratory model hydraulic flume 8.65 m long, 1 m deep, and 1 m wide was employed. The coastal dike was assumed as impermeable and made of a stainless-steel sheet of trapezoidal shape. The experiments were carried out employing five upstream and one downstream water levels. Besides, four different depths of sheet piles and four different lengths of impermeable blanket were used as seepage control measures. Results of the experiments were recorded at various points at the downstream foundation of the dike. The results indicated that the integrated application of two of the seepage control measures had more significant effect on reduction of uplift pressure. The results of the current study and two old empirical methods, that is Bligh and Lane, indicated that the Lane method underestimates the magnitude of uplift pressure and risk of piping in comparison with the Bligh’s method. 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For the purpose of the study a laboratory model hydraulic flume 8.65 m long, 1 m deep, and 1 m wide was employed. The coastal dike was assumed as impermeable and made of a stainless-steel sheet of trapezoidal shape. The experiments were carried out employing five upstream and one downstream water levels. Besides, four different depths of sheet piles and four different lengths of impermeable blanket were used as seepage control measures. Results of the experiments were recorded at various points at the downstream foundation of the dike. The results indicated that the integrated application of two of the seepage control measures had more significant effect on reduction of uplift pressure. The results of the current study and two old empirical methods, that is Bligh and Lane, indicated that the Lane method underestimates the magnitude of uplift pressure and risk of piping in comparison with the Bligh’s method. 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| subjects | Blanket Blanketing Characterization and Evaluation of Materials Chemistry and Materials Science Coastal Coastal Dikes Dams Dikes Hydraulics Hydrocarbon leakage & seepage Lanes Materials Science Pressure Reduction Risk Seepage Sheet Pile Technical Article Uplift Pressure |
| title | Laboratory Investigation of the Seepage Control Measures under Coastal Dikes |
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