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All Journal JOURNAL OF SCIENCE AND APPLIED ENGINEERING Prosidia Widya Saintek
Riman Riman
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Social Sciences Transportation Other

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Analysis of the Cross Section Planning of Jepara’s Secondary Channels in Serayu Irrigation Area of Sumpiuh Irrigation Channels Cilacap Central Java Prima Safitri Ayundaningtyas; Abdul Halim; Riman Riman
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 5, No 2 (2022): JSAE
Publisher : Widyagama University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31328/jsae.v5i2.4039

Abstract

Central Java is one of the provinces in Indonesia that relies on the agricultural sector. The agricultural centre in the province is located in Cilacap regency. In order to improve agricultural products, adequate facilities and infrastructure are required, one of which is the Jepara Secondary Channel. Channels on the Secondary Channel Jepara majority is no longer worth using. So much agricultural land is less maximal in water utilization. On the Jepara secondary channel, there is no similar cross-section of channels; some use a cross-section of soil, stone, and concrete, and there is cross-sectional damage.  In connection with the problem, a cross-sectional planning analysis of secondary channels needs to be conducted. Consider effective rainfall analysis, irrigation needs analysis, and open hydraulic analysis. The results obtained from the analysis should indicate that the discharge flowed by the existing channel (Qs) must be greater than or equal to the planned discharge (Q0). Based on the results, two channels cannot accommodate the discharge of water needs (Q0), namely in section 1 and section 6, so it needs to be redesigned. However, by analyzing cross sections along channels with a varied cross-section shapes. Then planned design for all fields by using alternative four. This is because using a cross-sectional combination of trapezoid and u-ditch 70x80 cm can shorten working time and make construction costs more affordable.
PERENCANAAN EMBUNG PALOTAWO KABUPATEN KONAWE SELATAN Diogo de jesus; Riman Riman; Abdul Halim
Prosidia Widya Saintek Vol 1, No 1 (2022)
Publisher : Universitas Widyagama Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (287.531 KB)

Abstract

Desa Palotawo Kecamatan Tinanggea di Kabupaten Konawe Selatan yang mengalami masalah dengan pemenuhan kebutuhan air terutama di musim kemarau karena potensi air sangat terbatas. Untuk mendapatka cadangan air agar tersimpan di aliran sungai dan dapat dimanfaatkan pada musim kemarau maka pembangunan embung merupakan salah satu alternatif yang dapat dilaksanakan untuk mengatasi masalah kekurangan air ini. Perencanaan Embung Palotawo ini meliputi analisa hidrologi yang meliputi perhitungan curah hujan rencana dan debit rencana, analisa kapasitas tampungan, analisa spillway, analisa tubuh embung, serta analisa kesatabilan spillway maupun tubuh embung terhadap gaya-gaya yang terjadi. Dari perhitungan yang telah dilakukan diperoleh kebutuhan air baku penduduk Desa Palotawo sebesar 0.74 liter/detik, untuk irigasi sebesar 1.82 liter/detik/ha, curah hujan rencana periode ulang 50 tahun sebesar 166.7 mm, debit rencana periode 50 tahun sebesar 12.49 m3/dtk, Type mercu pelimpah menggunakan Mercu bulat, R = 0.30 m dengan elevasi mercu pada + 59.00 dan elevasi muka air banjir pada +59.45 dengan total tampungan sebesar 33,658.40 m3. Sedangkan tubuh embung menggunakan beton dengan kemiringan bagian hulu 1 : 0.5 dan hilir 1 : 1. Tubuh embung dan spillway dinyatakan aman terhadap gaya – gaya yang terjadi.
Co-Authors A Halim Diogo de jesus Prima Safitri Ayundaningtyas