濁水溪沖積扇區域性地下水觀測網井位分析

Abstract

本研究旨為結合地下水流數值模擬與地質統計的方法，來作濁水溪沖積扇 最佳井網位置及數量的分析。根據濁水溪沖積扇新設觀測井所產生之水文 地質資料進行水文地質含水層分析，再以地下水三度空間的數值模擬來驗 證水文地質分析的結果，確認主要含水層的位置。最後以地質統計之方法 ，根據地下水數值模式之結果進行分層之結構分析，再進一步以降低變異 數法，定出統計上之最佳井網佈置。 This research applies groundwater numerical simulation combined with geostatistics to analyze the optimal monitoring network position and quantities of Choshuichi Fan. First, the geohydrological layers are analyzed according to the geohydrological data provided by newly set up monitoring wells in Choshuichi Fan. Second, the results of geohydrological analysis are verified and the primary aquifer position is confirmed with groundwater three-dimensional numerical simulation. Then, with geostatistical method, the layered structural analysis is utilized according to the results of groundwater numerical model. Finally, the statistical optimal monitoring network design is determined with variance reduction analysis.