| Assessment of the role of slit as a safety valve in failure of levees |
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| 作者单位： | [1]Prof., Department of Civil Engineering, Indian. Institute of Technology, Roorkee, Uttaranchal 247667, India [2]Caroline and William N. Lehrer Distinguished Chair in Water Engineering, Professor of Civil ＆ Environmental Engineering and Professor of Biological and Agricultural Engineering, Texas A ＆ M University, 2117 TAMU, Dept. of Biological ＆ Agric. Engineering, 321 Scoates Hall, College Station, Texas 77843-2117, USA [3]Rubicon Professor, Department of Civil and Environmental Engineering, Louisiana State University, BatonRouge, LA 70803-6405, U. S. A. |
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| 摘 要： | The development of a narrow channel or slit due to piping just underneath the base of levees channel has been reported to be useful to withstand the increase in the head beyond critical head conditions. Also, the maximum slit length has been emphasized to be up to half of the base width. By developing a model of critical head considering slit, it is found that the critical head can increase with the development of slit length only under certain conditions. Analysis of piping failure data indicates that the critical head expressions considering slit length constitute a potentially useful model for critical head.
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| 关 键 词： | 防洪堤 洪水 防治 调查 |
Assessment of the role of slit as a safety valve in failure of levees |
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| Authors: | CSPOJHA VPSINGH DDADRIAN |
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| Institution: | 1. Prof., Department of Civil Engineering, Indian Institute of Technology, Roorkee, Uttaranchal 247667, India;2. Caroline and William N. Lehrer Distinguished Chair in Water Engineering, Professor of Civil & Environmental Engineering and Professor of Biological and Agricultural Engineering, Texas A & M University, 2117 TAMU, Dept. of Biological & Agric. Engineering, 321 Scoates Hall, College Station, Texas 77843-2117, USA;3. Rubicon Professor, Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, LA 70803-6405, U. S. A. |
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| Abstract: | The development of a narrow channel or slit due to piping just underneath the base of levees channel has been reported to be useful to withstand the increase in the head beyond critical head conditions.Also,the maximum slit length has been emphasized to be up to half of the base width.By developing a model of critical head considering slit,it is found that the critical head can increase with the development of slit length only under certain conditions.Analysis of piping failure data indicates that the critical head expressions considering slit length constitute a potentially useful model for critical head. |
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| Keywords: | Failure of levee Piping Flood defense Water head seepage erosion |
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