Pipe Irrigation Network Optimization Based on Hydraulic and Cost Characteristic in Dry Land Agriculture

Jurnal Irigasi

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Title Pipe Irrigation Network Optimization Based on Hydraulic and Cost Characteristic in Dry Land Agriculture
Optimasi Jaringan Irigasi Perpipaan Berdasarkan Karakteristik Hidraulis dan Biaya di Pertanian Lahan Kering
 
Creator Muhardiono, Iman
Kartiwa, Budi
Hamdani, Adang
Heryani, Nani
 
Subject pipe irrigation; optimization; dry land; cost; EPANET
irigasi pipa; optimasi; lahan kering; biaya; EPANET
 
Description In dry lands, limited annual rainfall rate as well as its uneven temporal and spatial distribution causes a heavy constraint on agricultural activities. Utilization of proper irrigation method can overcome these limitations so that water demand can be fulfilled in an efficient and effective manner. Currently, pipe irrigation has been widely used to improve irrigation efficiency and crop productivity. However, in practice, the designs which had been made usually not yet optimum and efficient so that the expected discharge output can be excessive or less than expected. Therefore, design optimization is required by considering hydraulic characteristics and costs. The research was conducted to obtain optimal pipe irrigation network design through scenario analysis of pipe dimensions based on hydraulic modeling in the EPANET 2.0 application. The research was conducted in South Lampung Regency with a research block area of 1 ha. The analysis was conducted in 15 scenarios of irrigation networks with different combination of pipe diameter. The results showed that the simulated pipe diameter combination scenario can give varying results for the cost component and the hydraulic conditions of water in the pipe. The best combination is Scenario 7 with a combination of main pipe with a diameter of 48 mm and a sub-main pipe with a diameter of 22 mm which can optimally fulfill the plant water requirement at a relatively economical cost.
Curah hujan tahunan yang rendah di lahan kering, serta keterbatasan dan atau ketidakseimbangan sebarannya secara temporal dan spasial, menyebabkan usaha tani di lahan kering sangat terbatas. Penggunaan metode irigasi yang tepat guna diperlukan untuk  menjawab permasalahan keterbatasan pemenuhan air agar pemakaiannya lebih efisien dan efektif.  Dewasa ini, teknologi irigasi perpipaan pada lahan kering sudah banyak dimanfaatkan untuk meningkatkan efisiensi irigasi dan produktivitas tanaman.  Namun demikian dalam pelaksanaannya, desain yang dibuat masih belum optimal dan efisien sehingga keluaran debit yang diharapkan dapat berlebih atau sangat kurang dari yang diharapkan. Optimasi desain diperlukan dengan mempertimbangkan karakteristik hidraulis dan biaya. Penelitian dilakukan untuk mendapatkan desain jaringan irigasi pipa yang optimal melalui analisis skenario dimensi pipa berdasarkan pemodelan hidraulis pada perangkat lunak EPANET 2.0. Penelitian dilaksanakan di Kabupaten Lampung Selatan dengan luas area blok penelitian 1 ha. Rangkaian jaringan irigasi dibuat sebanyak 15 skenario, dimana variabel diameter pipa dibuat berbeda tiap skenarionya.   Hasil penelitian menunjukkan bahwa skenario kombinasi diameter pipa yang disimulasikan dapat memberikan hasil yang bervariasi terhadap komponen biaya dan kondisi hidraulika air dalam pipa. Kombinasi terbaik adalah Skenario 7 dengan kombinasi pipa utama berdiameter 48 mm dan pipa sub-utama berdiameter 22 mm dapat memenuhi kebutuhan air tanaman secara optimal dengan biaya yang relatif ekonomis.
 
Publisher Balai Teknik Irigasi
 
Contributor Agency for Agricultural Research and Development
Badan Litbang Pertanian
 
Date 2020-12-31
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion


 
Format application/pdf
 
Identifier http://jurnalirigasi_pusair.pu.go.id/index.php/jurnal_irigasi/article/view/302
10.31028/ji.v15.i2.109-120
 
Source Jurnal Irigasi; Vol 15, No 2 (2020): Jurnal Irigasi; 109-120
Jurnal Irigasi; Vol 15, No 2 (2020): Jurnal Irigasi; 109-120
2615-4277
1907-5545
 
Language ind
 
Relation http://jurnalirigasi_pusair.pu.go.id/index.php/jurnal_irigasi/article/view/302/413
 
Rights Hak Cipta (c) 2020 Jurnal Irigasi
 

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