Study of diversion weir effect on channel stability

• Main Author: 游象勇
• Other Authors: 楊錦釧
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/90588995266360755269

碩士 === 國立交通大學 === 土木工程系 === 91 === ABSTRACT This study uses a quasi two-dimension sediment transport model (NETSTARS model) to investigate the river stability problem due to building the diversion weir. First, a hypothetical case is designed to test the model’s capability in dealing with the diversion weir. The effect of the diversion weir on flow and sediment transport behavior has been thoroughly examined. Form the results, one, therefore, can understand the difficulties and the possible solution for the NETSTARS model applied to simulate the flow passing through the diversion weir. Then the model is applied to the Nan-Kan creek. The bed changes due to long term flood flows and single flood events are simulated. The simulation results can provide useful information for river stability management because of the existence of diversion weir. Keywords : diversion weir，scour and deposition of river bed，NETSTARS model