王如意2006-07-252018-06-292006-07-252018-06-292000http://ntur.lib.ntu.edu.tw//handle/246246/10705The objectives of this research project are aimed to study the hydrological characteristics and set up adequate rainfall-runoff models of suburban watersheds in Taipei for the application of flood-damage mitigation in the project area. Due to high intensity of rainfall, meandering river course of Tamshui River and rugged topography of watershed, severe flood and inundation damages caused by storm or typhoon hitting occur in Taipei area every year. In the past, rational formula, regional flood formulas, frequency-analysis methods and dimensionless unit hydrograph were commonly applied for the estimation of peak discharge in hillslope areas. However, because of significant errors involved in the empirical approach, some appropriate methods of flood estimation need to be considered for further modification. This study, a three-year research project, is accordingly proposed to execute the detailed and zoned analyses for the deterministic rainfall-runoff process and set up adequately hydrological models to simulate the flood behavior for the hydrological planning of surrounding areas in Taipei city and county. Firstly, rainfall and flood records and the related data observed by different water- conservancy organizations are proposed to collect. Frequency analysis of rainfall in Taipei area are accomplished, rainfall intensity-duration-frequency curves are drawn, and the appropriate rainfall patterns for different durations and frequencies can be formed. Nextly, ARC/INFO analysis of Geographic Information System are applied for analysis the geomorphologic characteristics of river network and watershed topography of Tamshui River Basin. Suitable cell structures of every tributary can thus be organized. Finally, semi-spatial distributed with parallel typed reservoirs conceptual model is theoretically derived and compared, model parameters are reasonably optimized, and the resulting flood hydrographs can be simulated for different design rainfall patterns and return periods. Some suggestions are submitted for hydrological planning of new community development. The analytical methods proposed in this study can be applied for flood mitigation of suburban watersheds in Taipei.本研究係從事台北都會郊區水文特性之研析及合適水文模式之建立，以提供研究區域水資源規劃及防洪排水之應用為目的，近數十年來台北都會區工商業鼎盛，經濟蓬勃發展，人口快速集中，近郊社區林立，形成一都會生活環境圈；惟淡水河河道蜿蜓，沿岸地形複雜多變，河水流入台北盆地，由於低窪河道受威潮影響，若遇暴雨或颱風來襲時，因宣洩不及，致常一雨成災，淹水洪氾頻傳，對國計民生影響甚巨。 以柱本省對於山坡地集水區之水文規劃設計，常沿用合理化公式、洪峰推估公式、頻率分析或台灣特有之無因次單位歷線，此等由經驗估計之誤差相當可觀，宜有合適之理論方法予以改進。 本研究係以三年期間深入探討台北都會郊區如五堵、汐止、南港、內湖、松山、士林、北投、新店、景美、深坑、石確、中和、永和、新莊、板橋、三重、樹林、山佳等集水區之降雨一逕流歷程，研擬適用之水文模式，以瞭解台北都會近郊發生暴雨時沿岸漫地流流動之特性。 本研究首先擬蒐集淡水河流域內之中央氣象局、水利處、石門、翡單水庫管理局等所屬之雨量站歷年之降雨資料，從事雨量之頻率分析，繪製降雨佳度一延時一頻率曲線，建構不同頻率及不同降雨延時之合適設計雨型；視其為引入水文系統之投入函數（inPut function ) ，再採用地理資訊系統ARC 用呵FO 分析，將淡水河流域內基隆河、新店溪及大漢溪三支流之河川流網分佈，劃成合適數目之核胞。研究中視每一核胞為一個獨立之水文單元，應用半空問分布並聯型水庫概念模式研析各核胞由某種降雨型態及頻率條件下所可能形成之逕流歷線，以提供都會區開發時水文規劃設計之應用。application/pdf34860081 bytesapplication/pdfzh-TW國立臺灣大學生物環境系統工程學系暨研究所Urban hydrologyRainfall analysisRunoff simulationConceptual modelHydrological planning都市水文學降雨分析逕流模擬概念模式水文規劃reporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/10705/1/892625Z002011.pdf