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Aguskamar Aguskamar
Politeknik Negeri Padang
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Analisis Banjir Di Kawasan Jondul Rawang Kota Padang Beno Putra Susanto; Dyen Triana Putri; Zahrul Umar -; Aguskamar - -
Jurnal Ilmiah Poli Rekayasa Vol 15, No 2 (2020): -
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1034.897 KB) | DOI: 10.30630/jipr.15.2.169

Abstract

Flood has been an endless disaster for human being all over the world since the past, nowadays and in future. Water flood may be affected by nature or human activities or even by both nature and human. Almost all region in Indonesia facing the flood problem with various scale and time.Jondul Rawang one place located in south side of Padang city for example is always suffer with water flood. This study is an analysis of flood for Jondul Rawang, using EPA SWMM 5.1 software with simulation method. The simulation result will show location of points on drainage system which start to offer flowincluding the time and duration. Calculation is made based on collected data, hydrology and hydraulyc analysis.The data should cover primary and secondary drainage system then come out with design flood and hydraulyc analysis to check the capacity of drainage.Calculation of rainfall for repeat period using probability method Chi-Kuadratand Smirnov-Kolmogorof will obtain Log Normal Method for rainfall 251,62 mm. To calculate water debit inside drainage for 5 years period flood exist channel 1-2, 3-4, 5-6, and 8-9 with respective overflow 4,5 m3/sec, 6,53 m3/sec, 6,36 m3/sec, and 6,50 m3/sec. While capacity of respective existing drainage are lower such as: 4,47 m3/sec, 5,48 m3/sec, 2,96 m3/sec, and 1,82 m3/sec. Solution to be taken place to resolve the flood problem for Jondul Rawang are Enlarge the drainage size, build retention pond and build infiltration pond.
Studi Sedimentasi di Sungai Batang Lampasi Sedimentation Study at Batang Lampasi River Dalrino Dalrino; Hartati Hartati; Aguskamar Aguskamar; M. Iqbal Iqbal; Dila Pertiwi
Jurnal Ilmiah Poli Rekayasa Vol 15, No 1 (2019): -
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (477.16 KB) | DOI: 10.30630/jipr.15.1.153

Abstract

BatangLampasi River was located in Talawi village, Nagari Koto Nan GadangPayakumbuh, about 30 km from Bukittinggi, with 48.19 km river length and around 226 km2 Cathment Area. The river flow carries a lot of sediment material, causing siltation on the riverbed which causes the river to overflow in the surrounding area. Sediment transport was triggered by Lampasi watershed erosion, that especially in the upstream section and settling on the riverbed. Prediction of depth decrease caused by sedimentation was conducted. Theoretical flood discharge determined used Nakayasu method. Sediment yield caused by land erosion determined by USLE equation and will compared with total sediment transport that calculated for 5 years return period with Yang's, Engelund Hansen, Ackers and White's methods. HEC-RASS 4.0 was used to find the high of flood water level and also as input hydraulics term to calculating transport sediment. The equivalent value approaching sediment yield was Yang's method where the sediment transport value is 21294,763 tons / year with sediment thickness of 27.24 cm / year. With these deposits thickness we can see from HEC-RASS 4.0 modeling the elevation of high flood water during normal conditions and the presence of thick sediment deposits.
Co-Authors -, Hartati - Beno Putra Susanto Dalrino Dalrino Dila Pertiwi Dyen Triana Putri M. Iqbal Iqbal Zahrul Umar -