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Analisis Sedimentasi Di Check Dam Study Kasus : Sungai Air Anak dan Sungai Talang Bandung Desa Talang Bandung, Kecamatan Sumber Jaya, Kabupaten Lampung Barat Togatorop, Holong; Kusumastuti, Dyah I; Tugiono, Subuh
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 4 No. 3 (2016): Edisi September 2016
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v4i3.438

Abstract

The river is a source of water that is accommodating and drain the water and material ingredientsbrought from the upstream. Problems which often occur in the upstream region is land erosioncausing sedimentation. The purpose of this study is: to determine the sediment rate and tocalculate filling time check dam of Air Anak River and Talang Bandung river.The location of this research is in the Air anak watershed and Talang Bandung watershed, SumberJaya Districts, Lampung Barat. Data needed in this research is suspended load sediment data,rainfall data, and water level data. The method used in this study is the prediction modelparametric approach to Universal Soil Loss Equation (USLE), measured sediment analysis,analysis of check dam age.From the analysis using USLE method it is found that the amount of sedimentation Air AnakWatershed is 3.306.3091 tons / year and sedimentation Talang Bandung Watershed is 6.913.3709tons / year. While the magnitude of the measured sediment sample is for the Air Anak Watershed is4.447.3193 tons / year with the sedimentation rate is 4.043.0175 tons / year and the amount ofsedimentation for Talang Bandung Watershed is 13.501.3716 tons / year with a sedimentation rateis 12 273 , 9742 tons / year. From the research results it can be known the age of check dams forAir Anak Watershed is 148 days and Talang Bandung Watershed is 73 days.Keywords: sedimentation, Air Anak watershed, Talang Bandung watershed, USLE methode
Design Planning of Small DAM Conservation at Simple Rental Flats University of Lampung Novitasari, Novitasari; Purwadi, Ofik Taupik; Tugiono, Subuh
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 7 No. 2 (2019): Edisi Juni 2019
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v7i2.1198

Abstract

Rain Water Harvesting is a method of water conservation by flowing rainwater into a single point of basin on the surface of the earth.  This method can be applied to areas that have a supporting topography including the educational environment.  The Lampung University area has several points of basin to hold rainwater, one of them is a water basins in the area of Simple Flats for University of Lampung can be used to do water conservation through the construction of small dam.The methods are used to redesign this small dam conservation are hydrological , small dam conservation construction planning , analysis stability of  planned constructions and the last method is estimating building construction cost.  Small dam conservation planned height of 4 m, with a base elevation at +107,00 m the dam crest elevation +110,00 m, dam crest width 2 m, the slope of 1:1,5.  The inflow debit of 0,987 m³/sec and the outflow debit of 0,586 m³/sec with cycle period 5 years. Spillway which used is free overflow type and basin specific energy building Vlugter type.  Stability small dam conservation at simple rental flats University of Lampung construction stated as safe. Reservoir volume after planned to be 29.160,750 m3, increasing from the previous volume 3.309,741 m3.  Cost estimated of design planning of conservation small dam is Rp. 7.323.901.000,00. Keywords: Small dam, Conservation, University of Lampung.
Perencanaan Embung Konservasi di Laboratorium Lapnagan Terpadu Fakultas Teknik Universitas Lampung Hidayat, Taufik; Tugiono, Subuh; Purwadi, Ofik Taupik
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 7 No. 3 (2019): Edisi September 2019
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v7i3.1216

Abstract

AbstractThis research intended to conserve water resources and build an integrated field laboratory at the Faculty of Engineering of Lampung University. The small dam planning method consists of hydrological analysis, small dam body planning analysis, soil strength stability analysis of reservoir construction, and analysis of the budget plan in small dam construction..Rainfall data uses Polinela rain station data with one point rainfall analysis method. The calculation results obtained using these methods are, type of reservoir with small dam dimensions, height of 3,75 m with a base elevation of +105,00 and peak elevation of +108,75, reservoir length of 165,613 m and width of the lighthouse as wide as 2,60 m, slope with 1:1,5 embung height with reinforcement of stone pairs. The flood discharge is 0,375 m³/s for the planned rain pattern of 90% in Bandar Lampung area and the planned water storage volume is 4.951,404 m². The planned budget for Conservation Embung at the Integrated Field Laboratory of the Faculty of Engineering, University of Lampung is Rp. 2,817,793,499 (two billion eight hundred seventeen million seven hundred ninety three thousand four hundred ninety nine rupiahs). Abstrak Penelitian ini bertujuan untuk mengkonservasi sumber daya air dan membangun laboratorium lapangan terpadu di Fakultas Teknik Universitas Lampung. Metode perencanaan embung ini terdiri dari analisis hidrologi, analisis perencanaan tubuh embung, analisis stabilitas kekuatan tanah terhadap konstruksi embung, dan rencana anggaran biaya pada konstruksi embung.  Data hujan menggunakan data stasiun hujan Polinela dengan metode analisis hujan satu titik (point rainfall). Hasil perhitungan didapatkan dengan menggunakan metode-metode tersebut yaitu, tipe embung urugan dengan dimensi embung, tinggi 3,75 m dengan elevasi dasar +105,00 dan elevasi puncak +108,75, panjang embung sebesar 165,613 m dan lebar mercu selebar 2,60 m, kemiringan terhadap tinggi embung 1:1,5 dengan perkuatan pasangan batu. Debit banjir sebesar 0,375 m³/detik untuk pola hujan rencana 90% daerah Bandar Lampung dan volume tampungan air rencana sebesar 4.951,404 m². Rencana anggaran biaya Embung Konservasi di Laboratorium Lapangan Tepadu Fakultas Teknik Universitas Lampung sebesar Rp. 2.817.793.499,- (dua miliyar delapan ratus tujuh belas juta tujuh ratus sembilan puluh tiga ribu empat ratus sembilan puluh sembilan rupiah).