Study on The Potential Debris Flow Torrent Control Methods of Small and Steep Watersted in Taitung Rift Vallage--A Case Study of The Special Soil and Water Conservation Area in Taitung DF020 Potential Debris Flow Torrent

• Main Authors: Liu, Cheng-Chang, 劉承璋
• Other Authors: Hsu, Chung-Li
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/9bc8m4

碩士 === 國立屏東科技大學 === 水土保持系所 === 106 === Taitung County is located in eastern Taiwan close to the Central Mountain Range.The hillside occupies 94 percent of area. As of 2018, there are 166 the potential debris flow torrent. According to data analysis, there are 32 debris flow torrent types of potential debris flow torrent belonging to small and steep Watersted. Ifwe can establish a good governance approach,It will be beneficial to reduce the waste of government resources and safeguard the rights and interests of the people.In this case study, a case study was conducted using the standard disaster case “ the special soil and water conservation area in Taitung DF020 potential debris flow torrent”.Five themes are discussed includingSoil and Water Conservation in Agricultural and Forest Lands, Management of Landslide, Safe Drainage, Potential Debris Flow Torrent andExisting facility maintenance management.Discussion results mentioned the ways of hillside development and utilization to manage improvement and Suggestion of landslide control. In addition, the bank of the potential stream of the earth and rocky stream is mainly project-based, with the goal of stabilizing and maintaining adequate flood-cross sections.Avoid panning and overflowing. Among them, the establishment of a settling basin in the middle and lower reaches is particularly important.The downstream needs safe drainage and related enough settling basin.It is also recommended that all districts regularly check and maintain the effectiveness of existing governance facilities. During the discussion, it was learned that the main problem of protential debris flow torrentatof Small and Steep Waterstedin the Rift Valley in Taitung is that the downstream soil sand cannot be naturally transported, resulting in silting. Therefore, it is suggested to use multiple settling basin in the middle and upper reaches to keep the soil on the slopes.Downstream settling basin are regularly cleaned by human to maintain efficiency.The concept of soil amortization should be a better way of governance.