Establishment and Comparison on Flood Operation Rules of Tseng-Wen Reservoir
碩士 === 國立臺灣海洋大學 === 河海工程學系 === 104 === Generally, there are annually 3 typhoons affecting Taiwan and bringing plentiful rainfall which would cause flooding. It is important to have a safe and effective operation mode of reservoir flood control that can accommodate typhoon’s volume. However, the r...
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ndltd-TW-104NTOU51920612017-10-01T04:30:12Z http://ndltd.ncl.edu.tw/handle/12168466714159032041 Establishment and Comparison on Flood Operation Rules of Tseng-Wen Reservoir 曾文水庫防洪操作規則之制定與比較 Yang, Yen-Jie 楊彥杰 碩士 國立臺灣海洋大學 河海工程學系 104 Generally, there are annually 3 typhoons affecting Taiwan and bringing plentiful rainfall which would cause flooding. It is important to have a safe and effective operation mode of reservoir flood control that can accommodate typhoon’s volume. However, the release timing depends upon decision makers and their experiences. The purpose of this thesis is to study the flood operation at the Tseng-wen reservoir. We collect the flood control facilities and 56 typhoons’ historical data during flood operation and use the current situation of inflow and water level as the operating factors. According to the information entropy theory, different inflow and water level will be converted into flood release index. However, releases would be decided as a function of release indexes that correspond to current water surface elevation and inflow rate. By using the genetic algorithm, we optimize the releases during flood operation that consider the flood peak reduction, downstream safety and water level are the main objectives until flood ending. This flood operation model will help decision makers to determine the current release and to reduce the risk of flooding. In addition,we choose five typhoons (Morakot、Jangmi、Sinlaku、Krosa and Ewiniar) to verify and compare with the flood operation in practice and previous research (Tsai 2010), then set the different weights for the outflow and final water level for sensitivity analysis. The results show that this proposed model improve the flood mitigation effect after change the different weights, and this method could reduce the peak rate and ultimately a better level of performance. Huang, Wen-Cheng 黃文政 2016 學位論文 ; thesis 71 zh-TW |
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碩士 === 國立臺灣海洋大學 === 河海工程學系 === 104 === Generally, there are annually 3 typhoons affecting Taiwan and bringing plentiful rainfall which would cause flooding. It is important to have a safe and effective operation mode of reservoir flood control that can accommodate typhoon’s volume. However, the release timing depends upon decision makers and their experiences.
The purpose of this thesis is to study the flood operation at the Tseng-wen reservoir. We collect the flood control facilities and 56 typhoons’ historical data during flood operation and use the current situation of inflow and water level as the operating factors. According to the information entropy theory, different inflow and water level will be converted into flood release index. However, releases would be decided as a function of release indexes that correspond to current water surface elevation and inflow rate. By using the genetic algorithm, we optimize the releases during flood operation that consider the flood peak reduction, downstream safety and water level are the main objectives until flood ending. This flood operation model will help decision makers to determine the current release and to reduce the risk of flooding.
In addition,we choose five typhoons (Morakot、Jangmi、Sinlaku、Krosa and Ewiniar) to verify and compare with the flood operation in practice and previous research (Tsai 2010), then set the different weights for the outflow and final water level for sensitivity analysis. The results show that this proposed model improve the flood mitigation effect after change the different weights, and this method could reduce the peak rate and ultimately a better level of performance.
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author2 |
Huang, Wen-Cheng |
author_facet |
Huang, Wen-Cheng Yang, Yen-Jie 楊彥杰 |
author |
Yang, Yen-Jie 楊彥杰 |
spellingShingle |
Yang, Yen-Jie 楊彥杰 Establishment and Comparison on Flood Operation Rules of Tseng-Wen Reservoir |
author_sort |
Yang, Yen-Jie |
title |
Establishment and Comparison on Flood Operation Rules of Tseng-Wen Reservoir |
title_short |
Establishment and Comparison on Flood Operation Rules of Tseng-Wen Reservoir |
title_full |
Establishment and Comparison on Flood Operation Rules of Tseng-Wen Reservoir |
title_fullStr |
Establishment and Comparison on Flood Operation Rules of Tseng-Wen Reservoir |
title_full_unstemmed |
Establishment and Comparison on Flood Operation Rules of Tseng-Wen Reservoir |
title_sort |
establishment and comparison on flood operation rules of tseng-wen reservoir |
publishDate |
2016 |
url |
http://ndltd.ncl.edu.tw/handle/12168466714159032041 |
work_keys_str_mv |
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