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All Journal Jurnal Ilmu Pertanian Indonesia J-Sil (Jurnal Teknik Sipil dan Lingkungan) Bumi Lestari Jurnal Ilmu Lingkungan Teknotan: Jurnal Industri Teknologi Pertanian Jurnal Keteknikan Pertanian JURNAL ANALISIS KEBIJAKAN KEHUTANAN Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Ecogreen Jurnal Rekayasa Sipil Jurnal Irigasi LIMNOTEK - Perairan Darat Tropis di Indonesia Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) JUTEKS Jurnal Sosial Ekonomi Pekerjaan Umum JURNAL TEKNIK HIDRAULIK JuTEkS (Jurnal Teknik Elektro dan Sains) International Journal Engineering and Applied Technology (IJEAT) J-Sil (Jurnal Teknik Sipil dan Lingkungan)
Asep Sapei
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Analysis of Maros River Discharge Using the Modified Soil and Water Assessment Tools (SWAT) Program Ahmad Fausan; Asep Sapei; Yuli Suharnoto; Nora Herdiana Pandjaitan
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 1 (2022): March
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v11i1.146-160

Abstract

Soil and Water Assessment Tools (SWAT) which is developed in America was used to analyze the effect of land management on discharge, sedimentation, and water quality in a river basin area. The hydrological conditions in the Americas are different from Indonesia, so a modified SWAT is done. This research aimed to implement a modified SWAT program to predict the results of a better discharge analysis based on hydrological analysis in the sub-Watershed area. About 13.90% of the area was paddy fields. The evaluation of the module had been done by looking at the coefficient of determination (R²) and Nash-Sutcliffe Efficiency (NSE) based on the comparison of simulated discharge results with an observation discharge. Research began with delineation DEM, HRU formation, simulation, calibration, and validation. The R² value for daily data on modified SWAT was 0,725. It was better than the original SWAT and SWAT with Pothole, which were 0,706 and 0,708 respectively. Likewise, the NSE value for daily data on modified SWAT was 0,721, on original SWAT and on SWAT with Pothole was 0,668 and 0,685 respectively. The analysis result showed that the modified SWAT provide good discharge prediction results, indicated by relatively high R2 and NSE values.Keywords: hydrological analysis,modified SWAT, paddy field, pothole, SWAT
THE APPLICATION OF TRANSMITTER AND RECEIVER TO DETECT THE PLOUGHING DEPTH M. Hariansyah; Setiawan R. P.A; Desrial .; Made D.S; Asep SApei
JUTEKS Vol 2, No 2 (2015)
Publisher : Department of Elektro Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (557.557 KB) | DOI: 10.32832/juteks.v2i2.397

Abstract

Transmitter and receiver were applied in this research to detect the mole plough. Transmitter was placed outside the farm while receiver was attached on the mole plough construction and then pulled by tractor. Mole plough was used to create drainage channel. However, creating drainage channel at slope of 0,02% is a difficult task as mole ploughing depth is strongly affected by the contour of soil surface. The objective of this research was to design a device which had ability to control mole ploughing depth. Transmitter used a modified green laser beam which used to measure the profile of soil surface. Receiver was used to receive signal. Light receiver sensor used photodiode which formed into matrix sized of (1x8), every row consisted of 40 sensor of photodiode with 8 levels of depth. When transmitter was activated, green laser beam transmitted 1.206 Hz frequency and can be transmitted for maximum 50 m. When photodiode sensor received green laser beam at allowable detection range, the light beam was transmitted to Arduino microcontroller. There were two microcontrollers used to control two units of relay. The first microcontroller was used to detect the contour level of soil surfaceand second microcontroller was used to measure the mole ploughing depth. The research found that there was deviation of mole ploughing depth between setpoint and field testing result.
Lapisan Kedap Buatan untuk Memperkecil Perkolasi Lahan Sawah Tadah Hujan dalam Mendukung Irigasi Hemat Air Asep Sapei; Muhammad Fauzan
Jurnal Irigasi Vol 7, No 1 (2012): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (688.152 KB) | DOI: 10.31028/ji.v7.i1.52-58

Abstract

Irrigation efficiency can be improved at the time of delivery (conveyance), distribution and application. Water losses in the form of evaporation, leakage, seepage, percolation and water waste are reduced to a minimum. The purpose of this study is to examine the role of artificial impervious layer in reducing percolation of paddy field related to water saving irrigation and to improve efficiency. The impervious layer is made by compacting the soil below the plow layer by using soil stamper and baby roller. The impervious layer thickness is obtained about 14 cm and the maximum hardness were 9.41 – 13.28 kg/cm2. The percolation obtained from 7.9 to 21.3 cm/day. Relatively smaller percolation obtained from plot which was compacted by using baby roller. But the obtained percolation is still too big for the paddy field which is only about 4 mm/day. This may be caused by the conditions of the plot that has very high percolation rate (508.8 cm/day).
Skenario Pengembangan Wilayah Berbasis Daerah Irigasi (Studi Kasus : di Cihea Kabupaten Cianjur) Endang Purnama Dewi; M. Yanuar J Purwanto; Asep Sapei
Jurnal Irigasi Vol 9, No 2 (2014): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (738.356 KB) | DOI: 10.31028/ji.v9.i2.89-95

Abstract

Regional development is targeted to make better growth in the rural area, by improving farmer’s welfare and minimizing the gap among the regions. In particular, the developement aims to increase farmers income percapita as an income indicators of development in rural area. In the irrigation area, the regional development can also increase the domestic revenue by providing value added program in this region. The existing regional plan (RTRW) of Cianjur in 2013 –2031 a part of the study area (Cihea irrigation system) are planned to be converted in to industrial area, it reaches 4209.903 ha. This research aims to provide an irrigation system based development strategy for guiding to the implementation of the RTRW. In the irrigation system, there are water resources and agricultural activities, mostly in food comodities. These resources will be considered in the study in order to achieve the target of rural development as for the implemention of RTRW. In this research, it analyzed supply and demand of irrigation, based on water balance calculation and farm production, the prospective industrial area in the region for processing the raw product of farming. As the result, the agricultural land convertion should be targeted into processing plant for rice. By these scenarios, the water resources were able to irrigate area of 5.484 ha with cropping pattern of rice-rice -secondary foodcrop as the minimum discharge occured in September its about 0.553 m3/second. The total production of this raw agricultural product can be processed to rice snack and cereal beside of rice, thus being able to gave rise in income of farmer to Rp 2.461.706,00 per planting season. Based on spatial analyze, the area which is can be developed are Ciranjang, Sukaratu, Sindangjaya, Mekargalih, Bojongpicung, Kertajaya, dan Cibiuk.
EVALUATION LIFETIME SERVICE AND CAPACITY OF THE KADUMALIK DAM RESERVOIR Utamy Sukmayu Saputri; Yuli Suharnoto; Asep Sapei; Niels vuegen
INTERNATIONAL JOURNAL ENGINEERING AND APPLIED TECHNOLOGY (IJEAT) Vol. 5 No. 1 (2022): International Journal of Engineering and Applied Technology (IJEAT)
Publisher : Nusa Putra University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (952.031 KB) | DOI: 10.52005/ijeat.v5i1.57

Abstract

The dam is a construction of water structures built across the river. The function of the dam is to hold and store water, both rain water, river water and water from the lake which will then form a reservoir. Kadumalik Dam is one of the projects of the Directorate General of Water Resources (SDA) of the Ministry of Public Works and Public Housing (PUPR) which will be built in 2020 on an area of 500 Ha. The purpose of building Kadumalik Dam is to meet the irrigation needs of the Irrigation Area (D.I) and meet diverse water needs, but the dam can also pose a great risk as well, namely the risk of accumulation of sedimentation. Sedimentation is one of the factors that is very influential in dam management. A large sedimentation rate will speed up the service life of the reservoir so that the planned reservoir function can be disrupted. Therefore this research is important to know how much the dam capacity and how old the dam service. This study uses analytical calculation methods for sediment transport based on observations and calculation methods with efforts to handle sedimentation. Based on the results of the analysis, the sedimentation rate in the Kadumalik Reservoir is 2.71 tons / ha / year and is classified as an erosion hazard class I or very light erosion rate, calculation of the method with sedimentation handling measures results in the analysis of the Sediment Control Building (BPS) can control 2.2 million m3 of sediment, so that it can extend the reservoir service life to 50 years.
THE UTILIZATION OF DRILL CUTTING WASTE FOR BRICK MANUFACTURING Utamy Sukmayu Saputri; Yuli Suharnoto; Asep Sapei; Niels vuegen
INTERNATIONAL JOURNAL ENGINEERING AND APPLIED TECHNOLOGY (IJEAT) Vol. 3 No. 2 (2020): International Journal of Engineering and Applied Technology (IJEAT)
Publisher : Nusa Putra University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1218.554 KB) | DOI: 10.52005/ijeat.v3i2.63

Abstract

Chevron Geothermal Salak, Ltd (CGS) as one of the Geothermal Power Plants, to increase geothermal reserves, CGS conducts drilling and as is well known this activity produces a lot of drill cutting waste material so that it can quickly fill the temporary storage area. To overcome this, efforts should be made to reduce and / or utilize the waste. The effort is to use the material as a mixture of brick manufacturing. The purpose of this study is to be able to know the use of drill cutting waste as a raw material for brick manufacturing, to know the properties or characteristics and quality of drill cutting waste, and to be able to know the composition of the drill cutting waste mixture for brick manufacturing. The compositions used is drill cutting waste, soil stabilizer, and cement. In this study the compressive strength test was carried out at a maximum age of 28 days. It aims to find out the best mixture composition in the brick manufacturing, so that it gets high quality and can be used in the field. The results of this study can be concluded that by utilizing drill cutting waste as a material for making concrete blocks, it has achieved a compressive strength of 21.74 MPa that meets the quality requirements of concrete bricks in the quality level category IV. The brick products produced from the use of drill cutting can be used for drainage channels, trash container, pond walls, and retaining wall.
Design of Water Source Alternative Based on SWAT Model Simulation Nora Herdiana Pandjaitan; Arif Yusron Afifi; Asep Sapei
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 4 (2022): Desember 2022
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v11i4.636-646

Abstract

Water shortage problem was often happened in many places in Indonesia. Water availability is very important not only for domestic needs, but also for other activities particularly for agricultural activities. To solve water shortage problem, this study aimed to design a water source alternative. The rain is a free water source and collecting rain in the small dam or reservoir is one of the effective rainwater harvesting technique that can increase water availability. This research was conducted  at Sekaran Village and the analysis had done using SWAT (Soil and Water Assessment Tools) model.  The planned rainfall and discharge were analysed by 5 years return period to calculate the water  potential for reservoir charging. The results of this study indicated that the location of the reservoir was planned in a forest area with a slope of 8-25%, on coordinates 111º38'11.39"E and 7º6'14.22"S and has a storage volume of 13737 m3. The reservoir has 4356 m2 surface area with a depth of 3 m. Based on the SWAT model simulation, the highest average discharge potential occured in February with a discharge of 0.312 m3/s and the lowest average discharge occured in October with a discharge of 0.044 m3/s. The total volume of potential annual water that can fill the reservoir is 61.166 m3/s per year based on a planned rainfall of 115.38 mm and a planned flood discharge of 2.54 m3/s with a return period of 5 years. The reservoir construction required a cost of  IDR 1,200,747,000. Keywords: Cost, Location, Rainwater Harvesting, Reservoir, SWAT
Kinerja Program Soil and Water Assessment Tools (SWAT) yang Dimodifikasi untuk Menduga Debit Sub-DAS Cimanuk Hulu Dzulfiqar, Muhammad Fakhri; Sapei, Asep
Jurnal Teknik Sipil dan Lingkungan Vol. 8 No. 3: Desember 2023
Publisher : Departemen Teknik Sipil dan Lingkungan, IPB University and The Institut of ENgineering Indonesia (PII), Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsil.8.03.157-166

Abstract

Soil and Water Assessment Tool (SWAT) merupakan sebuah model hidrologi yang dikembangkan di Amerika Serikat untuk menganalisis dampak dari perubahan tata guna lahan terhadap hasil air (debit) dan sedimentasi. Model ini telah banyak diterapkan di Asia. Akan tetapi, neraca air di dalam model SWAT menggunakan neraca air untuk tanaman yang ditanam pada lahan kering (up land) termasuk tanaman padi. Di Asia, khususnya di Indonesia, tanaman padi umumnya ditanam di lahan sawah. Untuk menyesuaikan dengan kondisi lahan sawah, model SWAT telah dimodifikasi dengan mengacu kepada algoritma sawah yang dikembangkan oleh Sakaguchi et.al. (2014). Penelitian ini bertujuan untuk mengevaluasi kinerja model SWAT yang dimodifikasi untuk menduga debit Sub-DAS Cimanuk Hulu yang bersawah. Hasil evaluasi menunjukkan bahwa model SWAT yang dimodifikasi dapat menduga debit relative lebih baik dibandingkan dengan modul SWAT original (tanpa algoritma sawah) yang ditunjukkan oleh nilai determinasi (R2) dan Nash-Sutcliffe efficiency (NSE). Nilai R2 dari hasil kalibrasi model SWAT yang dimodifikasi, SWAT original lahan kering dan model SWAT pot-hole berturut-turut adalah 0.569, 0.494 dan 0.544. Sedangkan nilai NSE dari hasil kalibrasi model SWAT yang dimodifikasi, SWAT original lahan kering dan model SWAT pot-hole berturut-turut adalah 0.521, 0.420 dan 0.503
Avoiding Flood by Improving Cross-Sectional Capacity through River Normalization Muzhaffar Harits; Asep Sapei; Nora Herdiana Pandjaitan
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 13, No 4 (2024): December 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i4.1023-1035

Abstract

Bekasi is one of the regions in Indonesia that often suffer from flooding. To overcome flooding problems in the Bekasi area, the Ciliwung Cisadane River Basin Center has begun a normalization project along the Bekasi River. This research aimed to evaluate the Bekasi River's cross-sectional capacity both before and after normalization. The analysis focused on the section where the Cileungsi and Cikeas rivers converge to the Bekasi weir. In this research, secondary data were employed, such as national digital elevation model data, detailed engineering designs of Bekasi River flood control activities, and rainfall data from the Cibinong Station that covers the period from 2006 to 2020. The result from planned flood discharge with the Nakayasu synthetic unit hydrograph method for a return period of 25 years on the Bekasi River was obtained at 665.81 m3/s. The results of hydraulic analysis before normalization with the HEC-RAS application show that flooding occurred at 102 out of 116 stations, with capacities of river cross-sections ranging from 453.49 m³/s to 665.71 m³/s at these overflow stations. Following the river normalization process, the cross-sectional capacity at all Bekasi River stations can accommodate flood discharge without any instances of overflow.Keywords: Flood, HEC-RAS, Nakayasu, Normalization, Rainfall.
THE APPLICATION OF TRANSMITTER AND RECEIVER TO DETECT THE PLOUGHING DEPTH Hariansyah, M.; R. P.A, Setiawan; ., Desrial; D.S, Made; SApei, Asep
JUTEKS Vol 2 No 2 (2015)
Publisher : Program Studi Teknik Elektro Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (557.557 KB) | DOI: 10.32832/juteks.v2i2.397

Abstract

Transmitter and receiver were applied in this research to detect the mole plough. Transmitter was placed outside the farm while receiver was attached on the mole plough construction and then pulled by tractor. Mole plough was used to create drainage channel. However, creating drainage channel at slope of 0,02% is a difficult task as mole ploughing depth is strongly affected by the contour of soil surface. The objective of this research was to design a device which had ability to control mole ploughing depth. Transmitter used a modified green laser beam which used to measure the profile of soil surface. Receiver was used to receive signal. Light receiver sensor used photodiode which formed into matrix sized of (1x8), every row consisted of 40 sensor of photodiode with 8 levels of depth. When transmitter was activated, green laser beam transmitted 1.206 Hz frequency and can be transmitted for maximum 50 m. When photodiode sensor received green laser beam at allowable detection range, the light beam was transmitted to Arduino microcontroller. There were two microcontrollers used to control two units of relay. The first microcontroller was used to detect the contour level of soil surfaceand second microcontroller was used to measure the mole ploughing depth. The research found that there was deviation of mole ploughing depth between setpoint and field testing result.
Co-Authors . Erizal ., Apip Ahmad Fausan Akmal Ikhsan Maulana Allen Kurniawan Arif Yusron Afifi Arya Hadi Dharmawan D.S, Made Desrial Dewi, Endang Purnama Dzulfiqar, Muhammad Fakhri E. Namaken Sembiring Eriyatno . Erizal , Gatot Pramuhadi Hariansyah, M. Hermawan, FX Irma Kusmawati Iskandar, Kamal Hasan Kamal Hasan Iskandar M Yanuar J. Purwanto M. Hariansyah M. Yanuar J Purwanto M. Yanuar J. Purwanto M. Yanuar J. Purwanto M. Yanuar J. Purwanto Made D.S Maulana Ibrahim Rau Meiske Widyarti Meiske Widyarti Melvin Classy Alexander Tarigan Muhammad Fauzan Muhammad Hasjim Bintoro Djoefrie Hasjim Bintoro Djoefrie Muzhaffar Harits Namaken Sembiring Nicolaus Noywuli Niels vuegen Niels vuegen Nora H. Pandjaitan R. P.A, Setiawan Radite Pas Reni Nuraeni Reni Nuraeni, Reni Ridwan Adi Surya Said Karim Saputri, Utamy Sukmayu Sayed Ahmad Fauzan Sayed Ahmad Fauzan Sayed Ahmad Fauzan, Sayed Ahmad Setiawan R. P.A Soeharsono - Sutoyo Tarigan, Melvin Classy Alexander Tieneke Mandang Utami, Nurya Wawan Hermawan Widiatmaka Yazid Ismi Intara Yuli Suharnoto Zuzy Anna