| 摘要: | 本論文主要為台灣人工濕地規劃設計之研究，並探討如何以滯洪型人工溼地系統方式，解決大鵬灣過去經常淹水的問題。濕地系統是由多種學科，所結合而成的一門科學。其中包含了自然生態、水利工程、土木工程、社會教育、環境保護、遊憩娛樂等多項學科。近年來也因氣候快速變遷導致瞬間暴雨水的頻率增加，進而對於人工溼地原有之滯洪的功能更加提升。依照目前現行法規之”水土保持技術規範”內之無因次公式，計算設計面積內各重現期距之集流水量，並針對其暴雨水量進行24小時之滯洪，待洪峰過後再排至其相關排洪設施內，以達到滯洪之效果。
本論文區域面積為約155公頃。依目前現行之相關法規所訂定之重現期距規定為10年期。10年重現期距，依”水土保持技術規範”內之無因次公式，所求得之24小時之總水量為10,117,000立方公尺，其所需之滯洪深度約6.5公尺。另50年重現期距，所求得之24小時之總水量為12,658,000立方公尺，其所需之滯洪深度約8.2公尺。雖目前相關法規之規定為10年重現期距，但為因應氣候變遷所造成之瞬間暴雨水，因而於本論文設計中，以50年重現期距為設計滯洪量。
依據相關數據所進行之規劃設計，其所需之滯洪深度須為8.2公尺。而原地形高點高程約為1.8公尺，因此依50年重現期距之滯洪深度約為-8公尺。既可滿足於50年重現期距之滯洪功能。本論文依此設計滯洪量，以初步總配置和細部設計構想，得一案例研究。並依此得建議及將來進一步研究之用。
This thesis is to study Taiwan wetland planning and design which is to explore how a proposed detention wetland system work to solve flooded Southern Taiwan Dapeng Bay. A wetland system is composed of a variety of disciplines such as geography, hydrology and landscape architecture and ecology. It also includes engineering, civil engineering, social education and environmental protection. Due to rapid climate changes, this thesis is to study the design and planning based on the assumption of increased frequency of storm water instantly, and on the upgrade or more duration and detention. This study is to study based on soil and water conservation technical specifications. That is, dimensionless formula to calculate the amount of water set within the design area of each return period, and is 24 hours storm water detention facilities.
The study area of this thesis is about 155 hectares. According to the relevant regulations and codes, this study laid down provisions for a 10-year recurrence period. A 10-year recurrence or storm return period is based on the studies of soil and water conservation technical specifications by Taiwan Government regulations of dimensionless- equation. The total amount of water is to obtain a 24 hour- of 10,117,000 cubic meters, which requires a detention depth of about 6.5 meters. Another estimate of a 50-year return period, 24 hours of total amount of runoff and storm water is about 12,658,000 cubic meters. The said detention depth is estimated about a 8.2 meter-depth for design and planning.
A 50-year return period for the design of detention capacity is thus the designed runoff and storm water volume for this thesis. In the end, this study is to design a detention pond with a depth of 8.2 meters according to the studied data. The original terrain elevation is about 1.8 meters high, so depending on the depth of 50-year return period of detention from approximately -8 meters. Reproduce the detention period can meet the functional distance in 50 years. In this paper, so the design of detention amount to the total initial configuration and detail design, was a case study. And so may recommend further research and in the future. |
