許銘熙2006-07-252018-06-292006-07-252018-06-292002http://ntur.lib.ntu.edu.tw//handle/246246/10728本研究計畫屬於「防洪示範區淹水境況模擬與決策支援系統之研究（二）」整合型計畫之子計畫二「台南科學園區排洪能力及洪災防治措施之研究」，全程計畫為期三年，目前為第二年。本研究主要模擬水流在排水系統流動及其溢流所造成地表淹水的影響。模式中將降雨所形成的地表水先流入雨水下水道系統，若有人孔溢流，則與二維漫地流模式結合，進行地表淹水演算，並考慮滯洪池對於排洪能力的影響。 本文以台南科學工業園區為研究對象，根據園區內特殊之水文、地文狀況以及排水系統及滯洪池的水流特性，建立排水及淹水模式，進行不同重現期降雨之淹水模擬。模式中包括排水系統演算、地表漫地流演算及滯洪池演算等三部分。在排水系統模式方面，利用美國環境保護著之暴雨經理模式，以模擬排水系統中水流之流況以及發生溢流點的流量歷線。二維漫地流模式主要利用二維零慣性理論，以有限差分法求解地表之淹水深及流速。滯洪池模式是求解水文連續方程式，採用雙出流口型式，建立滯洪演算程序，以獲得滯洪池之出流歷線。 在第一年度的研究中，已完成都會區淹水模式的初步建立與驗證，並應用於台南科學園區25 年、50 年及100 年重現期降雨情況的淹水模擬，本年度則進一步檢討及改進排水及淹水模式，並以台北市中央區民國90 年9 月納莉颱風事件進行驗證，同時完成台南科學園區雨水下水道系統不同淤塞情形下之淹水境況模擬。研究成果並可提供於第三年度計畫，進行園區內部排洪能力及洪災防治措施之研究。This project is the subproject-2, A Study on Drainage Ability and Flood-Damage Mitigation Measures for Tainan Science-Based Industrial Park, of the second-year of the three-year integrated project, Inundation Scenario Simulation and Decision Support System for Flood-Damage Mitigation in Pilot Areas (II). The main purpose of this study is to investigate surface inundation with the consideration of water surcharges from drainage systems. Moreover, detention pond model is taken into account to analyze the flooding areas for various return periods of flood. Based on hydrologic and topographic conditions and hydraulic characteristics of storm systems, an inundation model will be developed and applied in the Tainan Science-Based Industrial Park. The inundation model, which combines two-dimensional overland model, detention pond simulation model and storm sewer systems model, is developed to simulate the surcharge-induced inundation in the Park. Storm Water Management Model (SWMM) is employed to solve the storm sewer flow component and to provide the surcharged flow hydrographs for surface runoff exceeding the capacity of the storm sewers. The 2-D diffusive overland-flow model considering the non-inertia equation with alternative direction explicit numerical scheme is then used to calculate the inundation zones and depths due to the surcharged water on overland surface. Detention pond model considers outlet work with rectangular orifices and weirs used for solving hydraulic equations to provide the outflow hydrographs of the detention ponds. In the first year, the drainage and inundation models were developed based on the hydraulic characteristics of the sewerage system in the study area. The 25-, 50- and 100-year return period designed storm and topographical characteristics of the Tainan Science-Based Industrial Park were employed to simulate the inundated extent of the study area. In the second year, the inundation model for the Tainan Science-Based Industrial Park is verified by the Typhoon Nan event in Central Taipei area in 2001. Different flooding scenarios are simulated for the Tainan Science-Based Industrial Park with different obstruction ratios of the sewer drainage systems. The simulated results can be used to examine the flood draining ability of current drainage systems and flood mitigation measures in the third year, and provide guide lines for the development of flood mitigation measures.application/pdf5737444 bytesapplication/pdfzh-TW國立臺灣大學生物環境系統工程學系暨研究所雨水下水道系統漫地流滯洪池地理資訊系統排水系統淹水模式Storm sewer systemOverland flowDetention pondGeographic Information SystemInundation modelreporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/10728/1/902625Z002007.pdf