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Journal : Jurnal Civil Engineering Study

Analisis Efektivitas dan Waktu Pengurasan Kantong Lumpur Saluran Primer Daerah Irigasi Glapan Timur Pramsetya, Alviola Parentika; Kuncoro, Ahmad Hakim Bintang; Abdurrahman, Abbas; Budiningrum, Diah Setyati
Jurnal Civil Engineering Study Vol. 3 No. 02 (2023): Jurnal Civil Engineering Study
Publisher : Civil Engineering of Universitas Islam Nahdlatul Ulama Jepara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34001/ces.v3i02.522

Abstract

Irrigation is an effort to drain water from the source to agricultural land to meet the water needs of the land. Irrigated Area (I.A.) East Glapan needs help in the form of channels that carry too much mud or sediment material, thus hindering water distribution to the farthest lands. The lack of optimal mud bag building in the primary channel causes this. Based on these problems, it is necessary to check the effectiveness of the East Glapan I.A. mud bag. The analysis stage involves sediment sample tests and sediment transport calculations using the Shield, Einstein, and Mayer-Patter & Muller (MPM) methods, checking the deposition effectiveness and calculating the draining time. Based on the results of sediment transportation calculations, the highest value of 37.15 tons/day was obtained based on the MPM method. A settling efficiency value of 86.10% was obtained for the effectiveness of sludge bags. Then to optimize the performance of the mud bag, according to the calculation results, it is necessary to drain the mud bag of I.A. East Glapan every four months.
THE ANALISA KEBUTUHAN PIPA RESAPAN HORIZONTAL AKIBAT PERUBAHAN TATAGUNA LAHAN PADA DAERAH ALIRAN SUNGAI LUTUNG Salsabila, Cindy; Setyowati , Alfira; Susilo , Edy; Setyati Budiningrum, Diah
Jurnal Civil Engineering Study Vol. 4 No. 01 (2024): Jurnal Civil Engineering Study
Publisher : Civil Engineering of Universitas Islam Nahdlatul Ulama Jepara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34001/ces.v4i01.874

Abstract

Perubahan tataguna lahan yang memberikan dampak langsung terhadap peningkatan aliran permukaan dan menurunnya peresapan air ke dalam tanah, yang berakibat banjir dan kurangnya air tanah. Pengembalian air ke dalam tanah dengan cara biopori bisa juga menggunakan metode sumur resapan dan pipa resapan horisontal. Analisa kebutuhan pipa resapan horisontal menggunakan dua metode yaitu metode Hidrograf dan metode Rasional. Dengan menggunakan pipa horisontal dinding berlubang panjang 4 m akan menggunakan pipa diameter 6". Debit banjir yang dipasang adalah debit banjir hidrograf dengan metode Gama I. Debit banjir periode ulang 50 tahun adalah Debit tahun 2007 = 11,43 m³/detik, Debit tahun 2023 sebelum dipasang PRH = 15,36 m³/detik, Debit tahun 2023 setelah dipasang PRH = 11,31 m³/detik. Analisa reduksi banjir yang digunakan adalah reduksi banjir hidrograf dengan metode Gama I sebesar 8,55 m³/detik, dan dibutuhkan pipa resapan horisontal sebanyak 1650 unit