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Penerapan Model Horton Untuk Kuantifikasi Laju Infiltrasi: Application of the Horton Model for Quantification of Infiltration Rate Bismi Annisa
JURNAL SAINTIS Vol. 18 No. 1 (2018)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1275.805 KB) | DOI: 10.25299/saintis.2018.vol18(1).3198

Abstract

[ID] Kapasitas infiltrasi akan semakin menurun bila bidang resapan air semakin berkurang. Dampaknya limpasan air hujan yang menjadi aliran permukaan akan semakin meningkat. Konsep perencanaan yang memperbesar air hujan meresap ke dalam tanah akan mampu mengurangi aliran permukaan. Penelitian ini bertujuan untuk kuantifikasi laju infiltrasi air hujan dengan menerapkan model Horton. Metode yang dilakukan adalah uji sampel di lapangan terhadap laju infiltrasi pada bidang tanah yang tidak ada lubang resapan dan bidang tanah yang diberi lubang resapan. Dimensi lubang resapan adalah diameter (Ø) 3 inchi, 4 inchi, dan 8 inchi dengan kedalaman 1,1 m menggunakan alat ukur double ring infiltrometer. Metode perhitungan menggunakan rumus infiltrasi Horton. Dapat disimpulkan bahwa lubang resapan berpengaruh terhadap peningkatkan laju infiltrasi air hujan ke dalam tanah, sehingga dapat meningkatkan daya resap air ke tanah. Laju infitrasi model Horton pada lubang resapan Ø 3 inchi, Ø 4 inchi, Ø 8 inchi dan tanpa lubang resapan adalah f (t) = 0,55+0,45e-14t ; f (t) = 0,4+1,5e-19,5 t ; f (t) = 2,3+1,8e-46t ; dan f (t) = 0,28+0,72e-10,7t. Nilai laju infiltrasi yang paling besar hingga paling kecil adalah f (0) = 4,1 m/jam (pada Ø 8 inchi); f (0) = 1,9 m/jam (pada Ø 4 inchi); f (0) = 1 m/jam (pada Ø 3 inchi); dan f (0) = 1 m/jam (tanpa lubang resapan). Perbandingan akumulasi waktu laju infiltrasi terhadap lubang resapan Ø 8 inchi adalah 3,8 kali lebih lambat (pada Ø 3 inchi), 3,6 kali lebih lambat (pada Ø 4 inchi), dan 6,63 kali lebih lambat (tanpa lubang resapan). [EN] Infiltration capacity will decrease if the water absorption field decreases. The impact of rainwater runoff which becomes surface runoff will increase. The concept of planning that enlarges rainwater seeps into the ground will be able to reduce surface flow. This study aims to quantify the rate of infiltration of rainwater by applying the Horton model. The method used is a sample test in the field against the infiltration rate in the field of land where there are no infiltration holes and soils are given infiltration holes. The dimensions of infiltration holes are diameter (Ø) 3 inches, 4 inches, and 8 inches with a depth of 1.1 m using a double ring infiltrometer measuring instrument. Calculation method using Horton infiltration formula. It can be concluded that infiltration holes affect the rate of infiltration of rainwater into the soil, so that it can increase the absorption rate of water to the ground. Inflation rate of Horton model in infiltration hole Ø 3 inches, Ø 4 inches, Ø 8 inches and without infiltration hole is f (t) = 0.55 + 0.45e-14t; f (t) = 0.4 + 1.5e-19.5 t; f (t) = 2.3 + 1.8e-46t; and f (t) = 0.28 + 0.72e-10.7t. The value of the largest infiltration rate to the smallest is f (0) = 4.1 m / hour (at Ø 8 inches); f (0) = 1.9 m / hour (at Ø 4 inches); f (0) = 1 m / hour (at Ø 3 inches); and f (0) = 1 m / hour (without infiltration holes). Comparison of accumulated infiltration time to infiltration hole Ø 8 inches is 3.8 times slower (at Ø 3 inches), 3.6 times slower (at Ø 4 inches), and 6.63 times slower (without infiltration holes).
Peningkatan Partisipasi Masyarakat untuk Percepatan Capaian SDG’s Sektor Air Bersih dan Sanitasi Bismi Annisa; Sri Hartati Dewi; Harmiyati; Vauzhea Sherlina; Gryanda Wahyu Sugeng
Dinamisia : Jurnal Pengabdian Kepada Masyarakat Vol. 5 No. 5 (2021): Dinamisia: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/dinamisia.v5i5.7860

Abstract

The SDGs or Sustainable Development Goals are the 2030 Global Development Agenda which has become a commitment from all countries in the world, including Indonesia. Goal 6 Clean water and sanitation aims to ensure the need for clean water is adequate for all levels of society. Achieving these goals is highly dependent on community participation to help accelerate the SDG's program in the clean water and sanitation sector. The need for clean water can be met by utilizing the existing clean water supply while taking into account the impact on the environment. Rainwater has the potential to become a clean water resource by utilizing a simple rainwater harvesting system consisting of gutters, piping systems, and water tanks. By utilizing rainwater resources, it can help reduce the use of groundwater due to overexploitation of groundwater. Service activities are carried out online and offline together with partners SMPN 06 Pekanbaru by build Rain Water Harvesting (RWH) construction; so that later the RWH building can become a pilot activity/ best practice for other schools and the surrounding community.
Evaluation of Drainage Channel Capacity in Griya Rumbai Lestari Complex, Limbungan Baru Village with EPA SWMM 5.2 : Evaluasi Kapasitas Saluran Drainase di Jalan Harapan Kelurahan Limbungan Baru dengan Perangkat EPA SWMM 5.2 Vauzhea Sherlina; Bismi Annisa
Jurnal Teknik Sipil dan Lingkungan Vol. 7 No. 3: Desember 2022
Publisher : Departemen Teknik Sipil dan Lingkungan, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsil.7.3.241-250

Abstract

The high level of land use to meet the population's needs for land for settlement has led to an increase in land cover which results in high rates of rainwater runoff and reduces the amount of water that experiences infiltration. The study was conducted to review the ability of existing drainage channels to accommodate rainwater runoff and provide technical solutions to overflowing canals. The main components used in planning are rainfall to calculate the design discharge, as well as dimensions of existing drainage, soil infiltration rate test, catchment area, percentage of impermeable area, and soil elevation as the main input data in the drainage capacity simulation using the EPA SWMM 5 tool. 2 and results that the drainage is able to accommodate rainwater runoff. However, the simulation also shows that there are flood points due to higher outfall elevations so that the existing drainage is not able to drain rainwater runoff optimally. Based on this, a rainwater harvesting system (PAH) and infiltration wells are planned as an effort to manage and utilize rainwater runoff by collecting and reabsorbing rainwater runoff into the ground.