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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 5 Documents
 1 
Search results for , issue "Vol 10, No 1 (2019): JURNAL TEKNIK HIDRAULIK" : 5 Documents clear
Pemodelan Intrusi Air Asin Pada Akuifer Pantai (Studi Kasus: DKI Jakarta) Alan Wijaya; Arno Adi Kuntoro; Edy Anto Soentoro Gondodinoto
JURNAL TEKNIK HIDRAULIK Vol 10, No 1 (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 | Full PDF (1508.061 KB) | DOI: 10.32679/jth.v10i1.583

Abstract

Main issues frequently faced by communities living in the city of Jakarta is salt water intrusion. This paper analyzes the extent of the distribution of saltwater contamination to coastal aquifers in Jakarta, the method used is the open source program FREEWAT. modeling is carried out in five scenarios, namely (1) reduction of 50% of groundwater use, (2) reduction of 25% of groundwater use, (3) existing groundwater use in 2012, (4) increase of 25% of groundwater use, and (5) increase of 50% of groundwater use. From the modeling results, the distribution of saltwater contamination on each layer of the aquifer of Jakarta. In unconfined aquifer the existing condition is scenario 3 intrusion as far as 1.604 m, on scenario 1 there is an intrusion decrease of 38%, in scenario 2 there is an intrusion decrease of 13%, in scenario 4 there is an increase in intrusion by 17% and on scenario 5 increase intrusion by 25%. In upper confined aquifer, the existing condition, namely scenario 3, has occurred as much as 1.809 m intrusion, in scenario 1 there is an intrusion decrease of 23%, in scenario 2 there is an intrusion decrease of 8%, in scenario 4 there is an increase in intrusion by 19% and in scenario 5 increase intrusion by 26%. In middle confined aquifer, the existing condition is scenario 3, 1.927 m intrusion occurs, on the scenario 1 there is an intrusion decrease of 23%, in scenario 2 there is an intrusion decrease of 9%, in scenario 4 there is an increase in intrusion by 16% and in the scenario 5 increase intrusion by 22%.
Respon Hidraulik Dan Stabilitas Lapis Armor Pada Desain Awal Tanggul Laut Lepas Pantai NCICD Rian Mohammad Azhar; Agustia Larasari; Semeidi Husrin; Huda Bachtiar
JURNAL TEKNIK HIDRAULIK Vol 10, No 1 (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 | Full PDF (1121.472 KB) | DOI: 10.32679/jth.v10i1.603

Abstract

Main issues frequently faced by communities living in the city of Jakarta is salt water intrusion. This paper analyzes the extent of the distribution of saltwater contamination to coastal aquifers in Jakarta, the method used is the open source program FREEWAT. modeling is carried out in five scenarios, namely (1) reduction of 50% of groundwater use, (2) reduction of 25% of groundwater use, (3) existing groundwater use in 2012, (4) increase of 25% of groundwater use, and (5) increase of 50% of groundwater use. From the modeling results, the distribution of saltwater contamination on each layer of the aquifer of Jakarta. In unconfined aquifer the existing condition is scenario 3 intrusion as far as 1.604 m, on scenario 1 there is an intrusion decrease of 38%, in scenario 2 there is an intrusion decrease of 13%, in scenario 4 there is an increase in intrusion by 17% and on scenario 5 increase intrusion by 25%. In upper confined aquifer, the existing condition, namely scenario 3, has occurred as much as 1.809 m intrusion, in scenario 1 there is an intrusion decrease of 23%, in scenario 2 there is an intrusion decrease of 8%, in scenario 4 there is an increase in intrusion by 19% and in scenario 5 increase intrusion by 26%. In middle confined aquifer, the existing condition is scenario 3, 1.927 m intrusion occurs, on the scenario 1 there is an intrusion decrease of 23%, in scenario 2 there is an intrusion decrease of 9%, in scenario 4 there is an increase in intrusion by 16% and in the scenario 5 increase intrusion by 22%.
Analisa Perhitungan Muka Air Rata-Rata Di Lahan Gambut Dengan Tanggul Keliling Dalam Rangka Mengurangi Kebakaran Indra Setya Putra; Yudi Lasmana
JURNAL TEKNIK HIDRAULIK Vol 10, No 1 (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.v10i1.601

Abstract

Peatland fires encourage the government to restore peat function as natural water storage. One of the measures taken is to build a circumference dike to hold water to reduce excessive drainage. However, there is no study yet of the planned average water level that has to be maintained from the construction of circumference dike. Therefore, the aim of this study is to calculate the average water level on peatlands inside the circumference dike. The methods used consist of hydrological analysis, spatial analysis, and water level analysis. The results of the analysis shows that the average water level in normal years tends to be above the surface, except in the second half of August to the first half of November. In the second half of September to the second half of October, the peat has the potential to be burned. In a dry season the water tends to fall decline to the drainage boundary of peatland which is at -1.5 m which occurs in the second half of March to December. In the second half of February until December peatland has potential to be burned. From this research, it can be concluded that the calculations using this method is similar with in-situ observation data and can be used to calculate the average water level of peat with the same conditions in other locations.
Model Fisik Redaman Energi Gelombang Dengan Breakwater Tiang Juventus Welly Ginting; Ida Ayu Irawati Diah Ratna Putra; Eduardo Meyrianso Simanjuntak
JURNAL TEKNIK HIDRAULIK Vol 10, No 1 (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 | Full PDF (1892.234 KB) | DOI: 10.32679/jth.v10i1.606

Abstract

Breakwaters is one of type coastal structure that is mainly used as part for coastal protection purposes. Among the various types of breakwaters, likely rigid and hollow vertical pole types are one of the alternative structures for coastal protection. The utilization of this structure usually in the port area or in marina which protrudes into the sea. The pile breakwater test was carried out at laboratory experimental station for coastal engineering Buleleng Bali, on a scale of 1:10. This trial was carried out using pile materials using PVC pipes with a diameter of 6 cm. Scaling of this model is based on the piles used in the project sea dike stage A-NCICD. In testing this physical model several variations were carried out such as tata letak variation (N), wave height (h), wave period (t), distance between piles (columns) relative to diameter (B/D), and distance between piles (row) relative to diameter (b / D). Based on the test results obtained the optimal stacking configuration to reduce wave energy is a configuration with pole configuration B / D = 1; b / D = 0.5
Modelling Wave Dissipation on Pile Breakwater Using Xbeach Eduardo Meyrianso Simanjuntak; Leo Eliasta; Juventus Welly Ginting; Ida Ayu Irawati Diah Ratna Putra
JURNAL TEKNIK HIDRAULIK Vol 10, No 1 (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 | Full PDF (721.091 KB) | DOI: 10.32679/jth.v10i1.605

Abstract

Pile breakwater is an alternative coastal structure to prevent coastal erosion considering the economic and technical aspect. An improved design for pile breakwater is proposed here. Our goal is to develop an assessment tool in planning the implementation of pile breakwater. This tool is based on numerical model that has been verified with physical model result. The wave spectrum show that the numerical model is able to simulate the wave as same as the physical model with overestimation. It also points out that the simulation with wave period (T) = 2.5 s has more significant noise than the simulation with wave period (T) = 2 s. In general, the numerical model has high accuracy for predicting incident wave height (Hi), transmitted wave height (Ht) and transmission coefficient (KT) with error below 1 % RMSE. Xbeach is also able to simulate pile breakwater with high accuracy especially for two or three row arrangement with width gap 0.3 m. Even so, the numerical model have limitation regarding wave phase and wave through irregularity. Pile breakwater is an alternative coastal structure to prevent coastal erosion considering the economic and technical aspect. An improved design for pile breakwater is proposed here. Our goal is to develop an assessment tool in planning the implementation of pile breakwater. This tool is based on numerical model that has been verified with physical model result. The wave spectrum show that the numerical model is able to simulate the wave as same as the physical model with overestimation. It also points out that the simulation with wave period (T) = 2.5 s has more significant noise than the simulation with wave period (T) = 2 s. In general, the numerical model has high accuracy for predicting incident wave height (Hi), transmitted wave height (Ht) and transmission coefficient (KT) with error below 1 % RMSE. Xbeach is also able to simulate pile breakwater with high accuracy especially for two or three row arrangement with width gap 0.3 m. Even so, the numerical model have limitation regarding wave phase and wave through irregularity. 

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