圖書典藏及影音數位平台

本計畫預計於高美大橋至高雄農田水利會獅子頭圳取水口間之荖濃溪河段，設置觀測井持續進行觀測分析並進行地面水、地下水及伏流水資源潛能量評估分析，爰辦理本委託案，以利後續水資源開發及運用策略評析，增加用水調度之應變能力。

This project sets up a groundwater well to observe the groundwater level above the Gaomei Bridge in the Laonong River, and conducts an analysis of the potential energy of surface water, groundwater and voltaic water resources.It will contribute to the development and application of water resources and to increase the resilience of water dispatching. The project sets five groundwater wells along the banks of Laonong River. The ground layer in the open position is a gravel layer with brownish gray fine sand. The hydraulic conductivity (K) is between 4.64×10-5 m/s and 4.08×10-6 m/s. Investigation in-situ observations show that river water is the most important source of groundwater in the planned area, and 106BH03 is the major area that stream recharge to groundwater. According to the analysis of the remaining water volume of the river, the area above the Liling Bridge has only the remaining water from June to October. If the groundwater or hyporheic flow is used in the rest of the time, there is no remaining water. It is necessary to consider planning in the form of backup or comprehensive consideration of the combined operation of the existing water intake system. Under the same water intake project scale, the 106BH01 position can take the highest amount of water, the 106BH03 position is the second, and the 106BH06 position is the lowest. Among them, under the infiltration pipe plan with a depth of 20 meters and a diameter of 1500 mm, the annual water volume of the four observation locations is: (1) 106BH01-24.2 million tons, (2)106BH03-14.8 million tons, (3)106BH05-11.0 million tons, (4)106BH06-9.6 million tons. The reference water level results from groundwater development show that the Tuuku station is located in the fan tail of the alluvial fan of the Laonong River, the groundwater level is stable and the difference between the wet and dry years is very small. The Gaoshu station is located in the fan of the alluvial fan, and the annual variation of the groundwater level is very large. The difference in water level between the wet and dry years is very obvious. Under the restrictive exploitation of groundwater set by the stable utilization situation, the Tuuku station can provide 3.76~10.75 million tons of development water per day ,and the Gaoshu station can provide 5.35~13.27 million tons of development water per day. Under the three-month development time limit, the backup situation can provide 13.0~30.5 million tons per day and 6.41~14.85 million tons of water per day respectively.