River Flooding on Sanchong Area Inundation

• Main Authors: Chung-Hsien Lin, 林宗賢
• Other Authors: C.B Laio
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/31584819696848436441

碩士 === 逢甲大學 === 水利工程所 === 95 === Owing to geographic location of Taiwan being on subtropical monsoon zone, so typhoons and storms occur frequently. Typhoons and storms during summer and fall always cause several flooding, flood damages, and human lives loss in Taiwan. The major factors that cause flooding, landslide, and debris-flow in Taiwan are typhoons and storms of monsoon rain season. The function of hydraulic structure has its limit, it must cooperate with urban flood improvement action to mitigate flood damages. The urban flood improvement action must improve the locations of flood area, flood depth, flood duration, and calculate flood damages in the floodplain when heavy rainfall happens and effective mitigately the flood disaster loss. We present a two-dimensional unsteady flow model bases on the TVD finite difference method with structured grids in basin system. The Digital Terrain Model (DTM) and Geographic Information System (GIS) are employed to treat the input and output data for the model. The final global of this project is to simulate Sanchong area and provide the most important information, including the inundation range and depth for Sanchong. As an important aid to the flood improvement action review and evaluation for warming policy, and prepare step of decision. Then, we test the suitability of this model on Sanchong area, and present the result and discuss.