A Study of the Urban Flooding Resilience – A Case Study in Tainan, Taiwan

• Main Authors: Shin-Liang Chen, 陳信良
• Other Authors: Shih-Hsiung Chou
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/xq99u4

碩士 === 長榮大學 === 土地管理與開發學系碩士班 === 102 === There are frequent occureance of natural disasters these years. Abnormal climate events like typhoons, heat waves, torrential rains, tornados, and avalanches happened in every corner of the world, all of which caused increasingly serious damages due to climate change. Wenxian, an area in Rende Dist., Tainan City, located in a place near the junction of the San-yei river and the Erren River. In spite of its low-lying lands and winding courses, Wenxian area was severely impacted whenever torrential rains hit. This results to certain impacts on the population, industries and buildings’ resilience, or ability to recover, in the long run. In terms of resilience, residents’ adaptability to disasters can be drawn from the ability of recovering from abnormal conditions and rebuilding order of life after a disaster. Suffered from the loss of a disaster, people may adjust to fight against it and recover rapidly by experience. Once a disaster of the same degree of impact strike, they can recover to normal conditions timely. Consequently, when suffering the same impact, the severer the damage, the weaker the adaptability and resilience. On the other hand, the milderer the damage, the stronger the apdaptability and resilience. Taking “ the Demo Program of Urban Disasters-Prevention Space System in Wenxian area, Rende Dist., Tainan City” as a basis, this study aimed at creating a risk scatter chart of the damage corresponding to the risk of rainfall in 6 recurrence periods in Wenxian area. Through the chart which demonstrates the trend and resilience index of natural disasters, the resilience sensibility of this area is discussed in the study. By using this method, this study not only indicates comparisons of the resilience for floods in the same community, it can also be served as a baseline for flood-prevention in different communities. The research results show that Wenxian area has lower resilience when rainfall recurrence interval is more than 25 years. Since the sphere of deluge influence around San-yei River is mostly densely populated area, policemen and firemen numbers run short, and major roads for rescuing will be blocked whenever rainfall recurrence interval is more than 25 years, difficulties in rescuing hence occurred. It is suggested that the government should enhance flood relief facilities and dredging canals, so as to lower the risk of disasters.