Consolidation, jetting, stirring and hydrosuction of experimental mud deposits

• Main Authors: Ting-Sia Ye, 葉亭霞
• Other Authors: Hervé Capart
• Format: Others
• Language: en_US
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/33336619325330522065

碩士 === 國立臺灣大學 === 土木工程學研究所 === 104 === In order to alleviate problems caused by reservoir sedimentation, the hydrosuction is an effective way for deposition removal. To help interpret the sediment properties of different self-weight consolidation duration, we investigated the shear strength by T-bar testing, density by sampling and settlement by record. Besides, the consolidation theory is built to compare with experiment results. Moreover, compared to previous research, we conducted a series of hydrosuction experiments focused on long consolidation duration, in which hydrosuction had limitation in withdrawal. In addition to the reduced-scale hydrosuction, water jet or rotary cutter was equipped as an external force to damage sediment structure by jetting and stirring. The result shows that the efficiency of hydrosuction with no equipment gets worse as consolidation duration increases. Furthermore, the external force equipment works well in long consolidation duration yet not sufficiently in short.