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JURNAL TEKNIK HIDRAULIK
Published by Puslitbang Sumber Daya Air
ISSN : 20873611     EISSN : 25808087     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Engineering
The Hydraulic Engineering Journal covers a variety of scientific fields including Irrigation Engineering, Environmental quality and water management Engineering, Swamp Engineering, Beach Engineering, Water building Engineering, Harvesting Engineering, Water hydraulics and geotechnical Engineering, Hydrology and water management Engineering, Water environmental engineering, Beach Engineering, Harvesting Engineering, Sabo Engineering.
Arjuna Subject : -
Articles 186 Documents
 12   13   14   15   16 
WAVE FORCE OF THE 1883 KRAKATAU TSUNAMI ON THEOUTER SEA DIKE IN JAKARTA BAY Eduardo Meyrianso Simanjuntak; Juventus Welly Radianta Ginting; Ida Ayu Irawati Diah Ratna Putra
JURNAL TEKNIK HIDRAULIK Vol 11, No 2 (2020): Jurnal Teknik Hidraulik
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jth.v11i2.639

Abstract

The increased volcanic activity of Mount Anak Krakatau has raised the awareness of the potential tsunami impact for the construction of National Capital Integrated Coastal Development (NCICD) Project. This research is aimed to evaluate the tsunami impact on the outer sea dike of NCICD. The 1883 Krakatau tsunami was used as reference to evaluate the coastal infrastructure. Time series data from the 1883 Krakatau tsunami is extracted as an input to calculate the wave force. There are three different methods used such as Rule of Thumb (wave force is twice that of hydrostatic force), Linear Theory, Sainflou method. The results show that the tsunami will hit the outer sea dike with at least force about 70 kN. The outer sea dike OSD-1A is the least impacted sea dike while OSD-3A is the most impacted. For OSD-1A, Rule of Thumb and Linear Theory estimate 303.30 kN of wave force while Sainflou method predicts only 73.45 kN. On the other hand, OSD-3A endured wave force of 131.91 kN (Sainflou method) or 531.91 kN (Rule of Thumb and Linear Theory). Sainflou method is for efficient design while the other methods have the benefit of safety factor
Potensi Air Tanah Di Wilayah Pengungsian Erupsi Gunung Agung Bali Yan Adhitya Wesda Wardhana; Isnan Fauzan; Heni Rengganis
JURNAL TEKNIK HIDRAULIK Vol 10, No 2 (2019): JURNAL TEKNIK HIDRAULIK
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jth.v10i2.602

Abstract

Gunung Agung is a stratovolcano type of volcano which has a height of 3,142 masl and is located in Karangasem Regency, Bali Province. At the end of 2017, Mount Agung's volcanic activity increased until it finally erupted several times in October to December. The government has prepared refuge pockets at the foot of Mount Agung, in areas that are not directly affected by eruption. There are 19 drilling plan points that will be carried out to meet the raw water needs at the evacuation site. This paper presents the groundwater recharge potential including the distribution of water sources, Hydrogeological conditions and the magnitude of groundwater recharge potential at hillside of Mount Agung and the surrounding area. The method used in this study is a field survey, calculation of potential recharge, analysis and evaluation of hydrogeological conditions, distribution of water sources and calculation of potential groundwater recharge. Groundwater at the foot of Mount Agung has the potential to be utilized and developed mainly to cover raw water needs in several refugee locations, namely in the Districts of Sidemen, Abang and Karangasem. The result of the analysis is that the largest groundwater potential is in Kubu Sub-District, namely 97,560,207 m3 / year, with a position that is relatively susceptible to primary hazards and secondary to Mount Agung eruption. For locations that are relatively safe and reachable in the area, they are in Tianyar, Sukadana, Baturinggit, Kubu, and Tulamben Villages, all of which are on the coast of the sea. These results are expected to be used by local governments in an effort to deal with the provision of water from the impact of the eruption of Mount Agung.
STUDI KELAYAKAN WADUK CIKAWARI 2A DAN 5A DALAM RANGKA PEMENUHAN KEBUTUHAN AIR KOTA BANDUNG Cleon Christopher; Doddi Yudianto; Albert Wicaksono
JURNAL TEKNIK HIDRAULIK Vol 12, No 1 (2021): JURNAL TEKNIK HIDRAULIK
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jth.v12i1.654

Abstract

The water need in the Northern area of Bandung City was predicted to be 2.49 m3/s in 2040. The government responded to this issue by planning the construction of several reservoirs in the Cikapundung watershed. A previous study suggested three potential locations, i.e., Cikukang 2, Cikawari 2A, and Cikawari 5A reservoir. Since Cikawari 2A and Cikawari 5A are located on the same Cikawari river, three construction alternatives, i.e., a single reservoir of Cikawari 2A, a single reservoir of Cikawari 5A, and cascade reservoir Cikawari 2A+5A are proposed. Each alternative has its own advantages and limitations, thus evaluation of the best construction alternative needs to be carried out. The evaluation was conducted based on their reliable service in supplying water to Bandung City. This evaluation was analyzed by comparing the projected water demand following population growth and water availability derived from the rainfall-runoff model, NRECA. The analysis was conducted using two variations of dam height and reservoir capacity for each alternative. Based on the analysis results, the single reservoir of Cikawari 2A with 45 m of dam’s height was chosen as the most suitable alternative. It can supply 0.56 m3/s of water and provide water for 30.4% of the citizens in 2020, and decrease to 30.15% in 2040. However, it was also found that the reservoir could only supply 0.44 m3/s of water during the dry period. These results showed that the construction of the reservoir itself could not meet the total water demand. Therefore, another alternative is required to closing the gap in water demand.Keywords: Cikapundung watershed, water supply, Cikawari reservoir, reservoir simulation, service reliability
UJI MODEL HIDROLIKA KINERJA PEMECAH GELOMBANG APUNG BETON DENGAN KONFIGURASI GANDA Irham Adrie Hakiki; Leo Eliasta Sembiring
JURNAL TEKNIK HIDRAULIK Vol 11, No 2 (2020): Jurnal Teknik Hidraulik
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jth.v11i2.629

Abstract

Development of floating breakwater technology is increasing along with the rising interest of floating infrastructure. Different kind of materials and shapes were researched for optimizing the performance of floating breakwater. In comparison of structure with a similar dimension, the more rigid one gave a better performance. Large and rigid structure are possible to construct with the usage of concrete. However, when there is a limit to the structure dimension, whether it is caused by construction or transportation method, the alternatives for improving performance are needed. This research proposed a double configuration setup to cope with the said limitation. The breakwater performance is tested with physical model in laboratory by comparing performance of single pontoon with double pontoon for various structure spacing. Pontoon size are 1.2 m in length, 0.3 m in width, and 0.15 m in height and tested with many combinations of irregular waves. For double configurations model, the spacing of 30 cm, 60 cm, and 90 cm are used. Based on tested result, there are improvement up to 20% by using the double configuration. The improvement determined by ratio of structure spacing with wavelength. Larger ratio resulted a better performance in condition where the spacing did not exceed 0,65 length of wavelength.
PEMODELAN POTENSI EROSI DAN SEDIMENTASI HULU DANAU LIMBOTO DENGAN WATEM/SEDEM Ardian Alfianto; Shandy Cecilia
JURNAL TEKNIK HIDRAULIK Vol 11, No 2 (2020): Jurnal Teknik Hidraulik
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jth.v11i2.613

Abstract

Erosion and sedimentation caused 4,000-hectare siltation in Limboto. Experts predicted that Limboto will be extinct in 2031. Revitalization program ‘Limboto Lake Revitalization’ has been carried out since 2017, with sabo technology as the action carried out to restrain sedimentation rate and to save the lake from extinction. This study aims to measure erosion and sedimentation potential in upstream of Limboto including 12 rivers (sub-DAS), using WaTEM/SEDEM model Two outputs resulted through this study are total sedimentation potential and identification of sedimentation zoning on each river. Based on soil type and other triggering factors, 5 of 20 rivers have the biggest sedimentation potential to deliver to Limboto, namely Batulayar 193.662 m3, Biyonga Baluta 123.095 m3, Alo1 120.273 m3, Alo 115.204 m3 and Molamahu 73.058 m3. The model was visually calibrated by considering the rivers’ sedimentation volume collected by JICA and BWS Sulawesi II. The result shows different score depending on the soil type, slope, land cover and other parameters. Sabo dam has to be reviewed regularly and on-schedule, since its current data is not actual and upstream rivers have highly dynamic and fluctuative sediment as well.
STUDI KARAKTERISKTIK GELOMBANG PADA FLOATING BREAKWATER TIPE TERPANCANG DAN TAMBAT Sujantoko Sujantoko; Wisnu Wardhana; Eko Budi Djatmiko; Haryo Dwito Armono; Wahyu Suryo Putro; Rizki Haryono A.
JURNAL TEKNIK HIDRAULIK Vol 12, No 1 (2021): JURNAL TEKNIK HIDRAULIK
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jth.v12i1.650

Abstract

Floating breakwater (PGT) is designed to be applied as a wave barrier to reduce beach abrasion and wave energy so that waves coming to the beach have their energy reduced. Compared to conventional breakwater structures, PGT structures are more advantageous if the area to be protected from impact waves has a large enough depth. This structure is more flexible because the elevation follows the tides, so this structure can be used as a wharf at the same time. It is also free from the scouring and sedimentation that often occurs on the feet of conventional breakwater structures. This study aims to attenuate and reflect waves from various PGT configurations of piling and mooring types, by testing the physical model of PGT in the wave flume laboratory of the Department of Ocean Engineering ITS, at a water depth of 80 cm, a wave height of 3.5-5.5 cm, a wave period of 0.5-2 seconds, and the angle of the mooring rope (45o, 60o, 90o). PGT is arranged in a variety of longitudinal and transverse directions to the coast. Based on the experiment, it is known that the effect of configuration and width on the PGT structure on wave transmission and reflection is influenced by the mooring angle. Configuration 3 with the largest width can give the best transmission coefficient Kt = 0.797 at 45o mooring angle and reflection coefficient Kr = 0.572 at 90o mooring angle. In type 3 fixed-configuration gives the greatest value Kt = 0.431-0.623 and Kr = 0.053-0.997 compared to other configurations. Because in configurations 1 and 2 the back of the structure is not supported by piles, so a swing occurs which generates waves. While the effect of the slope of the wave, Kt will increase as the number of waves slopes decreases, conversely the value of Kt decreases with the increase in the slope of the wave.Keywords: Floating breakwater, piling, tethered,  mooring 
PENILAIAN RISIKO KEAMANAN BENDUNGAN DI JAWA TIMUR Maria Asunta Hana Pramudawati; Mahdi Ibrahim Tanjung; Ranisa Ghafara
JURNAL TEKNIK HIDRAULIK Vol 11, No 2 (2020): Jurnal Teknik Hidraulik
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jth.v11i2.631

Abstract

Dam risk assessment is basically a additional to a standard-based approach, which is a conservative approach to dam engineering. For existing and new dams, dam risk assessment aims to determine whether existing hazard risks can be tolerated, and if hazard risks cannot be tolerated, actions to reduce risk are planned. Risk assessments for existing dams can also be used as a basis for determining priorities in carrying out the required repair or rehabilitation work. This paper discusses the dam risk assessment at Sengguruh Dam, Sutami Dam, Lahor Dam, Wlingi Dam, Bening Dam, Wonorejo Dam and Selorejo Dam. The methods used in risk assessment include the preparation of risk assessments, risk analysis, risk evaluation, risk reduction and management. These seven dams are managed by one manager, namely PJT I and are considered to be representative of this method that can be used to determine the priority value of dam handling. Based on the results of the assessment, the 7 dams fulfill the risk criteria. The next action that can be taken for these dams is to monitor the dam's behavior on a regular basis and in the aftermath of the earthquake, renew and socialize the RTD. 
Beban Gelombang Pada Tiang Pancang Penahan Ponton Yang Diletakan Di Depan Dinding Vertikal Irham Adrie Hakiki; Vilda Ariviana; Ika Nur Afifah; Leo Eliasta Sembiring
JURNAL TEKNIK HIDRAULIK Vol 10, No 2 (2019): JURNAL TEKNIK HIDRAULIK
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jth.v10i2.615

Abstract

Experimental Station for Coastal  developed a pilot project of modular concrete floating structure that served as a quay at Kalibaru in North Jakarta. The structure guided by piles and placed in front of Jakarta Coastal Dyke which is a vertical wall structure. From evaluating the structure performance, it is found that the strength of the pile is an important factor for service life of the structure. To provide this, a physical model test of the floating pontoon module guided by piles was conducted at the Laboratory of Balai Litbang Pantai. The model used to determine the behavior of the structure and loads that must be hold by the pile as a seakeeping mechanism. It is done by measuring force acting on piles that caused by pontoon impact by using load cells. The pontoon loaded by regular and irregular waves. From the tests result, the recorded forces has an impuls pattern which have maximum value of 112.67 N. The load that occurs on the pile was not spread evenly on the four piles that hold the floating module. The disrepancy are around 2 – 40%.   The forces acting on piles depends on the ponton distance to the vertical wall. The forces increases along with the increases of relative distances of structure to vertical wall  to the wavelength. The presence of vertical vall caused this increase because it amplify the waves acting on the structure. The amplification effect are the greatest when the structure distrance from the wall is the multiplication factor of halves of wavelength.Keywords : physical model test, pontoon, floating quay, pile guide, impact force
Hubungan Antara Elevasi Muka Air Waduk Dan Panjang Lintasan Rembesan Terhadap Debit Rembesan Pada Bendungan Urugan Batu Inti Tegak (Studi Kasus Bendungan Jatibarang) Siswanto Siswanto; Suprapto Suprapto; Sri Sangkawati Sachro
JURNAL TEKNIK HIDRAULIK Vol 10, No 2 (2019): JURNAL TEKNIK HIDRAULIK
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jth.v10i2.628

Abstract

Rockfill dams have better stability than homogeneous soil dams. It allows to design the dam more slim with a higher slope. The disadvantage of rockfill dam is in the core zone as an impermeable zone. Zoned vertical core rockfill dam is a combination of various material properties. Geometry and drainage design will affect the seepage and phreatic line properties that occur. Numerical modeling and calculations are used to calculate the seepage profile more accurately. The combination of the parameters of the permeability coefficient (K), reservoir water level (Δh) and the length of the seepage path (L) can be used to determine the relationship between parameters with the same unit. 2D modeling take into account saturated/unsaturated conditions with steady state on each parameter. This study uses the Jatibarang-Indonesia dam as a basic model. The seepage profile at condition K1 (k = 1x10-5cm/sec) is q/k = -0.0018 (h2/L)2 + 1.3496h2/L + 53.241 and the seepage profile K2 (k=1x10-7cm/s) is q/k = -0.1521 (h2/L)2 + 90.402h2/L + 5480.2. This equations can be used to estimate seepage that occurs in a dam of other rock fill zoned vertical core dam based on the permeability coefficient value (K) more practically for all values of Δh and L reviewed.Keywords: Seepage, Rockfill Dam, Permeability, FEM, Numerical Analysis
ANALISIS PENGARUH NILAI KONDUKTIVITAS HIDRAULIK DAN DISPERSIVITAS DINAMIK TERHADAP REMEDIASI AIR TANAH MENGGUNAKAN SIMULASI NUMERIK Agus Mochamad Ramdhan; Arifin Arifin; Erik Hermawan; Lambok M. Hutasoit
JURNAL TEKNIK HIDRAULIK Vol 12, No 2 (2021): JURNAL TEKNIK HIDRAULIK
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jth.v12i2.658

Abstract

Groundwater remediation is one of the solutions to restore the contaminated groundwater. This study was conducted to determine the effect of hydraulic conductivity and dynamic dispersivity on the groundwater remediation effectiveness. As a case study, in 2020, in an area located in Balikpapan, groundwater remediation will be carried out by injecting water containing NaOH through five wells and pumping it back through five wells to form a cycle. The method used is a numerical simulation consisting of groundwater flow simulation, mass transport, and sensitivity analysis. The results show that it takes 124 to 300 days for the injected NaOH to arrive at the pumping wells. The sensitivity analysis results show that when the hydraulic conductivity value is ten times greater, the time required is reduced to 84 to 172 days. Meanwhile, when the dynamic dispersivity is twice larger, the time required is reduced to 75 to 189 days. These results indicate that the groundwater remediation method will be effective for aquifers with high hydraulic conductivity and dynamic dispersivity values. For the study area, the groundwater remediation is suggested to be carried out by increasing the number of injection and pumping wells with a relatively close distance, i.e., around 10 meters, so that NaOH arrives at the pumping wells more quickly.Keywords: groundwater, remediation, hydraulic conductivity, dynamic dispersivity, numerical simulation

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