圖書典藏及影音數位平台

臺灣地區常受颱風、豪雨侵襲而造成淹水災害，致使人民生命及財產蒙受損失，為使各級政府對於此類災害預防及應變有所參考，「災害防救法」第22條第7款規定：「為減少災害發生或防止災害擴大，各級政府應依權責實施下列事項：‧‧‧七 以科學方法進行災害潛勢、危險度及境況模擬之調查分析，並適時公布其結果。‧‧‧」。 民國88年起至90年，行政院國家災害防救科技中心(前國家科學委員會防災國家型科技計畫辦公室)首次進行並完成全臺22個縣市(外島縣市除外)第一代淹水潛勢圖，水利署於民國96年起至99年完成第二代淹水潛勢圖，供各級行政機關做為施政參考。為辦理第三代淹水潛勢圖，本所於民國102年制訂「淹水潛勢圖製作手冊」，並於民國103年起至105年完成全臺19個縣市第三代淹水潛勢圖，並於107年經經濟部審議後公開。惟金門縣、連江縣與澎湖縣等3外島縣市迄今仍未製作淹水潛勢圖，故本計畫將依據該手冊辦理金門縣、連江縣與澎湖縣淹水潛勢圖，作為中央部會及所轄各級政府再行審視各水災災害防救計畫之用。 經濟部水利署水利規劃試驗所(以下簡稱本所)依據經濟部水利署107年11月19日經水綜字第10714072090號函「本署108年度委託服務預定計畫複審會議紀錄」決議，爰提本計畫書。

In order to manipulate stable and reliable inundation potential maps, this program was based on inundation potential map production. This program focused in Kinmen County, Lienchiang County and Penghu County as the circumstance of the first potential inundation maps, and the results would provide the central ministrations and all levels of governments to review the flood hazard rescue plans. Based on the process of manipulating the inundation potential maps provided by the inundation potential map production and testing manual, there were three parts of this program. The first stage is to collect the information, and characteristic analysis including dividing the regions, topography analysis, hydrology analysis and oceanographic analysis as the basis of building inundation model and verification. The second stage was to build the inundation model and verify it which adopted significant typhoons events in recent years, then determine whether the hydrologic routing, hydraulic routing, and the decoration of hydraulic structures and engineering in the inundation prone area of the inundation model were appropriate or not, so as to make the results correspond to the historic inundation investigation area for ensuring the results in the next stage would fit the current situation. The third stage was scenario simulations and presentation of the results. The results would based on the finished engineering in the end of 2019, decoration of the pump stations and detention basins, the protection engineering of the villages and the finished regulation of the river cross sections in the inundation model. The scenario simulations included three time lag, 3 hours, 6 hours, 12 hours, and 24 hours, besides coordinated with 9 kinds of fixed quantity of rainfall and 8 kinds of return periods (2, 5, 10, 25, 50, 100, 200, and 500 years) to produce each inundation potential maps, and ten kinds of the fixed quantity rainfall would need to be examined and compared with the opened inundation potential maps. In addition, considering the torrential rain, storm surge, wave overtopping happening in the same time, the inundation model simulate the situation of the time lag in each return period under the condition of establishment of embankment due to the wave overtopping in the coastal area. Before the inundation potential maps were examined, we must hold the local conference and invite the staffs of rescue to determine the accuracy of the inundation potential maps for achieving the reliability of the maps completely.