都市開發造成地表不透水區域增加並造成洪泛機率提高，可透過透水鋪面增加入滲量減少洪水災害；本研究目的為設計及施作透水鋪面入滲率量測之標準試驗場，並設計入滲率量測方式。 首先先以水收支平衡概念，考量入滲、地下水位、地表逕流之數據收集，確定試驗場需有鋪面、地下土壤或礫石、地下水觀測井、地表逕流收集及排水需求；再考量不同透水鋪面設計，設置八種鋪面，每個鋪面面積為長350㎝×寬200㎝，鋪面厚度依鋪面材質介於 5㎝至15㎝，鋪面下方設計40㎝之碎石級配或土壤來儲蓄入滲水體，每個鋪面外側再建置蓄水池收集地表逕流，每個置蓄水池面積為長200㎝×寬100㎝×深度為55㎝；場域以鋼筋混凝土建置，並設置防水層，依設計尺寸做相等間隔，鋪面中央設置圓管以觀測地下水位，設置可開關之出水口，以達到標準量測透水率為目的。表面以3%之坡度，讓地表逕流流至外側之蓄水池，透過量測蓄水池水量，以計算超滲降雨量。最後以單筒試驗，進行標準試驗流程說明，並設置人工降雨設施提供爾後研究之用。 Urban development increases the impervious areas and reduces the flooding. Permeable pavement can increase the infiltration rate to reduce the amount of flood caused by heavy rain. This study designed and implemented a standard test field for measuring the permeability of permeable pavements. Standard infiltration Rate measurement method is also develped. First, based on the concept of water balance, the data collection of infiltration, groundwater level, and surface runoff, were considered. Standard elements of permeable pavement included pavement, underground soil or gravel, groundwater observation wells, surface runoff collection and drainage system. Eight kinds of pavement, where each grid is 350cm long, 200cm width and 50cm depth. Pavement thickness is between 5cm to 15cm depending on the material of the paving, and 45cm to 35cm thickness of gravel or soil is designed to storage the infiltration water. Each pavement is built with a tank to collect surface runoff. Area of each reservoir is 200cm long, 100cm wide and 55cm deep. Reinforced concrete and a waterproof layer is set for the pavement. A round pipe is set in the center of the pavement to observe the groundwater level. A water outlet that can be opened and closed to achieve the standard measurement of water permeability. Surface runoff will flow to the outer reservoir based on 3% slope in the surface. The amount of water in the reservoir is measured to calculate the seepage rainfall. Finally, a single ring test is used to explain the standard test process. Artificial rainfall facilities are also set up for future research.
