The infiltration capacity will decrease if the number of infiltration fields decreases. This results in increased surface runoff or inundation. The planning concept that creates a groundwater infiltration area in drainage will be able to reduce inundation in drainage. Pore Cylinder Hole is a water infiltration method by increasing water absorption in the soil. The aim of the study was to determine the effect of pore-hole spacing on infiltration capacity in pore-cylindrical drainage and to determine how much infiltration discharge due to variations in hole spacing using three levels of pore cylinder heights. This research was conducted using a pore-cylindrical drainage model and spacing the biopore holes and flowing water on the drainage surface. From the results of this study, it was found that the effect of the hole distance on the infiltration discharge, the closer the hole to the pore cylinder, the greater the infiltration discharge that occurs, it can be proven from the results of analysis of research data, for a flow rate of 400 cm 3 / sec, Qf = 35.1 cm 3 / sec. for spacing of holes 16 cm); Qf = 31.9cm 3 / s (to describe 32 cm holes); and Qf = 3.13cm 3 / s (for spacing of 16 cm holes).
Usaha penanggulangan banjir perlu dilakukan secara dini, dimana salah satunya adalah melakukan perbaikan pada sistim drainase. Penanggulangan banjir memerlukan desain drainase efektif, berwawasan lingkungan , yang berfungsi menampung, dan mengalirkan air dari badan jalan ke lapisan tanah yang ada di bawahnya . penelitian skala laboratorium sangat diperlukan untuk mengetahui : dimensi, rasio luas, bahan dan kedalaman lubang pori yang efektif untuk meresapkan air dari badan saluran drainase ke lapisan tanah di bawah saluran. Penelitian ini dilakukan dengan Studi eksperimental dengan menggunakan model saluran drainase bersilinder pori. Pengujian dilakukan dengan 3 variasi diameter lubang, ,3 variasi ketinggian muka air di saluran. Sebagai media infiltrasi digunakan tanah jenis Lempung yang dimodelkan berdasarkan sampel tanah yang diambil pada lokasi yang sering mengalami banjir atau genangan . Dari pengamatan dan uji laboratorium diharapkan dapat di hasilkan dimensi silinder pori yang seseuai dengan kondisi tanah Lempung pada bagian bawah saluran drainase. Makalah ini merupakan bagian dari penelitian Saluran Bersilinder Pori Berwawasan Lingkungan Pereduksi Genangan banjir Perkotaan, yaitu mengenai Pengaruh Silinder Pori Terhadap debit Infiltrasi Pada Tanah Lempung
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