Analisis Kapasitas Saluran Drainase Dengan Mengunakan Sumur Resapan (Studi Kasus di Daerah Tasi-Tolu Kota Dili)

Soares, Aleixo de Jesus (2020) Analisis Kapasitas Saluran Drainase Dengan Mengunakan Sumur Resapan (Studi Kasus di Daerah Tasi-Tolu Kota Dili). Masters thesis, Untag 1945 Surabaya.

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Abstract

The road drainage system in the Tasi-Tolu area is unable to accommodate the flood discharge that occurs with a certain return period. The purpose of preparing a thesis is to: 1) Analyze the planned flood discharge for the 2 year, 5 year and 10 year return period. 2) Analyze the capacity of existing channels and infiltration wells. 3) Evaluating the condition of the existing channel after the infiltration wells against the flood discharge for 2 years, 5 years and 10 years.. Infiltration wells serves to accommodate the rain water from the surface and then soak into the ground to become groundwater reserves. This study aims to assess how much water discharge rainfall runoff that goes into the wells ink reduce waterlogging and flooding due to rain an area. This research method is to use qualitative methods of collecting data from the theory and some sources. The method of settlement in this study uses the log normal method in determining the 5 year rain plan, the rational method for determining rainwater in drainage channels. From the analysis, it was found that the planned discharge was based on 5 years of rainfall data (2015 to 2019). Analysis of the flood discharge plan for a 2-year return period of 73.68 m3 / s, a 5-year return period of 87.10 m3 / s and a 10-year return period of 94.13 m3 / s. Analysis of the capacity of the existing channels in the Tasi-Tolu area of the city of Dili is 16.62 m2. Evaluating the existing channel after the presence of infiltration wells against the flood discharge for a 2-year = 57.07 m3 / s, with a depth of 2.5 m requires 12 infiltration wells, 3 m depth requires 10 infiltration wells, 3.5 m depth requires 8 infiltration wells, 5 years return period = 70.49 m3 / s, with a depth of 2.5 requires 14 pieces infiltration wells, 3 m depth requires 12 infiltration wells, 3.5 m depth requires 10 infiltration wells and 10 years = 77.52 m3 / s, with a depth of 2.5 requires 16 infiltration wells, 3 m depth requires 13 infiltration wells, 3.5 m depth requires 11 infiltration wells.

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