FLOW PATTERNS AND DAMAGE OF DIKE OVERTOPPING

Damage of a dike may result in severe damage and suffering. To reduce downstream damage and loss of life, it is important to study the process of breaching of the damaged dike. It is not possible to understand the damage process without a clear understanding of the flow patterns encountered. In the present study, data obtained from nine experimental runs are analyzed. The flow patterns and progressive damage of dike overtopping are investigated. Two types of phenomena at the dike surface:erosion; and erosion and sliding, are observed during the overtopping event. Four stages of dike damage can be distinguished. The degradation rate of the dike crest is found to be dependent on the downstream slope of the dike. The degradation rate is higher when the downstream slope is steeper.

作 者： Chaiyuth CHINNARASRI Tawatchai TINGSANCHALI Sutat WEESAKUL Somchai WONGWISES   作者單位： Chaiyuth CHINNARASRI(Assistant Professor, Water Resources Engineering Research Lab. (WAREE), Department of Civil Engineering,King Mongkut's University of Technology Thonburi, 91 Pracha-utit Rd., Bangkok, 10140, Thailand)

Tawatchai TINGSANCHALI(Professor, Water Engineering and Management Program, Asian Institute of Technology, P.O. Box 4, Klong Luang, Pathumthani, 12120, Thailand)

Sutat WEESAKUL(Assistant Professor, Water Engineering and Management Program, Asian Institute of Technology, P.O. Box 4, Klong Luang, Pathumthani, 12120, Thailand)

Somchai WONGWISES(Professor, Department of Mechanical Engineering, King Mongkut's University of Technology Thonburi, 91 Pracha-utit Rd., Bangmod, Bangkok 10140, Thailand) 

刊 名： 國際泥沙研究（英文版）  SCI 英文刊名： INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH  年，卷(期)： 2003 18(4)  分類號：   關鍵詞： Flow pattern   Damage   Dike   Overtopping  

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