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ANALISIS KAPASITAS TAMPUNGAN DAN PENENTUAN LOKASI KERUSAKAN SUNGAI AIH TRIPE KABUPATEN GAYO LUES Saputra, Maimun; Fatimah, Eldina; Azmeri, Azmeri
JURNAL TEKNIK SIPIL Vol 1, No 4 (2018): Volume 1 Special Issue, Nomor 4, Februari 2018
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jts.v1i4.10053

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Abstract: Aih Tripe River is morphologically a winding river where various forms of sediment and cliff erosion have occurred along the river. The condition of the River Aih Tripe has been damaged both vertically and horizontally. Damage to the strategic areas and the causes of disruption of access roads connected transportation Gayo Lues District with other districts. The purpose of this research is to analyze the capacity of existing river reservoir and to determine the location of river damage and the damage form. The scope of this paper is the analysis of rainfall and flood discharge plan, river capacity analysis and critical location analysis. Based on the calculation of flood discharge by using the HSS Nakayasu method has the highest flood discharge plan for each plan period, while the Hasper Method has the lowest flood discharge plan. From the calculation of rating curve for 1 river cross section based on the measurement of hydrometry, it can be concluded that calculation of flood discharge using Hasper Method is the discharge that has the closest value to the discharge on the curve rating with a 2 year return period (T). The analysis of river bank capacity by using HEC-RAS (Hydrological Engineering Center-River Analysis System) software. The discharge data used in this analysis is from the floodplain discharge of the plan using the Hasper method with period of 1 and 2 years. Based on the river morphology considerations, the damage to the flood and inundation facilities in the area of settlement hence the acquisition of 4 critical locations that need them are Gampong Telpi/bukit, Badak, Kendawi(3) and Kendawi (4). Abstrak: Sungai Aih Tripe secara morfologi merupakan sungai bermeander dimana berbagai bentuk endapan sedimen dan erosi tebing telah terjadi di sepanjang sungai. Kondisi sungai Aih Tripe telah mengalami kerusakan baik kerusakan secara vertikal maupun secara horizonal. Kerusakan terjadi pada daerah-daerah strategis serta menyebabkan terganggunya jalan akses transportasi yang menghubungkan Kabupaten Gayo Lues dengan kabupaten yang lain. Tujuan dari penelitian ini adalah menganalisa kapasitas tampungan eksisting sungai dan menentukan lokasi kerusakan sungai dan bentuk kerusakannya. Lingkup dari penulisan ini adalah analisa curah hujan dan debit banjir rencana, analisa kapasitas tampungan sungai dan analisa lokasi kritis. Berdasarkan hasil perhitungan debit banjir dengan menggunakan metode HSS Nakayasu mempunyai debit banjir rencana tertinggi untuk setiap periode ulang rencana, sedangkan Metode Hasper mempunyai debit banjir rencana terendah. Dari hasil perhitungan rating curve untuk 1 penampang sungai berdasarkan pengukuran hidrometri dapat disimpulkan perhitungan debit dengan menggunakan Metoda Hasper merupakan debit yang memiliki nilai yang paling dekat dengan debit pada rating curve dengan periode ulang (T) 2 tahun. Analisa kapasitas tampungan menggunakan software program HEC-RAS (Hydrological Engineering Centre-River Analysis System). Data debit yang digunakan pada analisa ini adalah dari perhitungan debit banjir rencana menggunakan Metode Hasper dengan periode ulang 1 dan 2 tahun. Berdasarkan pertimbangan morfologi sungai, kerusakan infrastrukur dan perkiraan resiko banjir genangan didaerah pemukiman maka didapat 4 lokasi kritis yang memerlukan penanganan segera yaitu Gampong Telpi/bukit, Badak, Kendawi (3) dan Kendawi (4).
STUDI AWAL: ANALISA KECEPATAN GELOMBANG GESER (Vs) PADA CEKUNGAN TAKENGON DALAM UPAYA MITIGASI GEMPA BUMI Rusydy, Ibnu; Jamaluddin, Khaizal; Fatimah, Eldina; Syafrizal, Syafrizal; Andika, Fauzi
Jurnal Teknik Sipil Vol 6, No 1 (2016): Volume 6, Nomor 1, September 2016
Publisher : Department of Civil Engineering, Syiah Kuala University

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Abstract: MASW survey to determine the shear wave velocity (Vs) had been conducted in Takengon basin, Aceh Tengah district. The survey aims to identify sediment layers based on Vs analysis and its correlation with the amplification factor. The Vs yielded from MASW survey was based on the dispersion of Rayleigh wave generated by 4 kg sledgehammer and recorded on 24 geophones with 10 Hz. There are 3 locations of MASW measurement in Takengon basin, the first one located on the edge of the basin, the second location was in the middle of the basin, and the last one was located in the southern. The results of Vs from MASW then compared with soil type classification from ASCE 2010 and SNI 1726: 2012. The Vs in the first location dominated by a layer of soft soil (SE) with the Vs less than 175 m/sand indicate as the young sediment in the edge of the basin. The amplification factor is estimated to be 1.2 times of bedrock acceleration. On the second location, Vs ranged between 275-283 m/s and categorized as stiff soil (SD). This category concluded that, in the middle of the Takengon basin, the sediment was consolidated, and the amplification factor would be smaller compared to the first location. On the thirst location, in depth of 6.3 meter and constantly down to 30 meter, there is very dense soil or soft rock (SC) with Vs 372 m/sec in the form of sandstone. The Construction of high-rise buildings is possible around this third location as long as the foundation of the building should reach the depth of very dense soil (SC) at 6.3 meters.Keywords : Shear wave velocity, Vs, Takengon Basin, MASWAbstrak: Survei MASW untuk mengetahui kecepatan gelombang geser (Vs) telah dilakukan di Cekungan Takengon Kabupaten Aceh Tengah. Survei tersebut bertujuan untuk mengetahui kondisi tanah berdasarkan analisa Vs dan hubungannya dengan penguatan gelombang gempa bumi (faktor amplifikasi). Nilai Vs yang didapatkan dari MASW dengan cara memanfaatkan dispersi gelombang permukaan rayleigh dari sumber seismik berupa palu 4 kg dan terekam pada 24 geophone vertikal 10 Hz. Terdapat 3 titik pengamatan Vs di Cekungan Takengon, titik pertama di pinggir cekungan dekat perbukitan, kedua di tengah-tengah cekungan dan ke-tiga di sisi selatan. Hasil pengukuran Vs dari MASW akan dibandingkan dengan pengkelasan jenis tanah dari ASCE 2010 dan SNI 1726:2012. Hasil MASW menunjukkan bahwa nilai Vs di titik pertama didominasi oleh lapisan tanah lunak (SE) dengan nilai Vs kurang dari 175 m/det yang mengindikasi lapisannya masih muda. Di titik pertama ini, efek amplifikasi diperkirakan sebesar 1,2 kali dari nilai percepatan batuan dasar. Di titik kedua, nilai Vs antar 275 – 283 m/det dan masuk dalam kategori tanah sedang (SD). Kategori SD menunjukkan bahwa di tengah-tengah Cekungan Takengon endapannya lebih tua dan terkonsolidasi sehingga efek amplifikasi akan lebih kecil dibandingkan dengan titik pertama. Pada titik ketiga, dari kedalaman 6,3 meter sampai menerus ke bawah ditemukan lapisan tanah keras atau batuan lunak (SC) dengan nilai Vs 372 m/det berupa batupasir. Pembangunan gedung bertingkat tinggi dimungkinkan di sekitar titik ke-tiga ini dengan syarat pondasinya mencapai kedalaman tanah keras (SC) di 6,3 meter.Kata kunci : Kecepatan Gelombang Geser,Vs, Cekungan Takengon, MASW
PENILAIAN TINGKAT RISIKO BENCANA TSUNAMI UNTUK KAWASAN KOTA BANDA ACEH BERDASARKAN SKENARIO TSUNAMI DESEMBER 2004 Fauziah, Fauziah; Fatimah, Eldina; Syamsidik, Syamsidik
Jurnal Teknik Sipil Vol 3, No 2 (2014): Volume 3, Nomor 2, Januari 2014
Publisher : Department of Civil Engineering, Syiah Kuala University

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Realignment of Banda Aceh devastated by the tsunami has put forward the concept of disaster mitigation. As the city is aware of the disaster, the availability of disaster risk map is an essential requirement in developing sustainable development and disaster mitigation based. This research aims to generate a map of tsunami risk assessment by loading element of threat,  vulnerability, capacity using spatial data and information in the region of Banda Aceh. Risk analysis is conducted using a  semi-quantitative weighting factors and the index values arebased on the analysis conducted by BNPB and TDMRC-Unsyiah. Mapping analysis is conducted by overlaying layer(overlay) and vector-based GIS grid. Based on the results of the analysis show that the risk areas with low-to-high tsunami consists of 73 villages high with an area of each is 6.05 km2 (10%). 20.66 km2 (35%) and 16.23 km2. The area is not an area of 17.02 km2 risk or 28% of the total area of the city of Banda Aceh.
KALIBRASI METODE USLE DALAM ESTIMASI EROSI AKIBAT KEHADIRAN ALUR (RILL) PADA SUATU LAHAN YANG DITANAMI RUMPUT GAJAH (PENISETUM PURPUREUM) Rizalihadi, Maimun; Fatimah, Eldina; Nazia, Lia
Jurnal Teknik Sipil Vol 1, No 2 (2012): Volume 1, Nomor 2, Januari 2012
Publisher : Department of Civil Engineering, Syiah Kuala University

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Abstract: Land and water is one of the major natural resource which has an important role for human life. Exploitation of Land use in catchment areas that do not correspond to its carrying capacity or ignore the rules of conservation of soil and water will cause the damage of the land. One of these is degradation due to erosion processes. Erosion can lead to loss of topsoil (top soil) and nutrient elements essential for plant growth. Continuous erosion will also lead to increased sediment transport in rivers or reservoirs that disrupt the capacity of land and water balance of river or reservoir.  At present, land erosion is estimated using USLE method. This method is only limited to the erosion in the form of sheet erosion. The purpose of this study is to determine the influence of rill density on the rate of soil erosion. The research was conducted at the Laboratory of Hidrotechnics, Faculty of Engineering, University of Syiah Kuala,  using test plots of 150 cm length, 80 cm width and 20 cm height planted with elephant grass (Penisetum purpureum). The intensity of the artificial rain was made using a rainfall simulator. Soil erosion is measured at each treatment slope (0o, 10o and 20o), the intensity of rainfall (37.5, 50 and 62.5 mm per 5 minute durations) and rill density (0; 1; 2; and 3 m/m2). The results indicate that increasing rill density can increase the soil erosion compare to USLE method. Therefore, it is necessary to enter the rill density coefficient in the equation when estimating erosion using USLE equation.Keywords : soil erosion, sheet erosion, rill density, USLE, MUSLE, Penisetum purpureum, Rainfall Simulator.Abstrak: Salah satu sumberdaya alam  yang mempunyai peranan penting bagi kehidupan manusia adalah tanah dan air. Penggunaan lahan di daerah tangkapan yang tidak sesuai dengan daya dukungnya atau mengabaikan kaidah-kaidah konservasi tanah dan air akan menyebabkan kerusakan dari lahan tersebut. Salah satu akibat yang ditimbulkan adalah degradasi lahan akibat proses erosi oleh air. Erosi dapat menyebabkan hilangnya tanah lapisan atas (top soil) dan unsur-unsur hara yang sangat penting bagi pertumbuhan tanaman. Erosi secara kontinyu juga akan menyebabkan peningkatan angkutan sedimen pada sungai atau waduk sehingga mengganggu daya dukung tanah dan keseimbangan air disungai atau waduk. Selama ini untuk memperkirakan erosi lahan digunakan metode USLE. Metoda ini hanya terbatas pada erosi dalam bentuk lembar (sheet erosion). Tujuan dari penelitian ini adalah untuk mengetahui sejauh mana pengaruh kehadiran alur (rill) terhadap laju erosi lahan. Penelitian ini dilakukan di Laboratorium Hidroteknik, Fakultas Teknik Universitas Syiah Kuala dengan menggunakan plot uji dengan ukuran: panjang 150 cm x lebar 80 cm x tinggi 20 cm yang ditanami rumput gajah (Penisetum purpureum). Intensitas hujan buatan dibuat dengan menggunakan alat rainfall simulator. Erosi lahan diukur pada setiap perlakuan kemiringan lahan (00, 10o dan 20o), intensitas hujan (37,5; 50; dan 62,5 mm dengan durasi hujan selama 5 menit) dan kerapatan alur (0; 1; 2; dan 3 m/m2). Hasil penelitian menunjukkan bahwa erosi lahan mengalami peningkatan dengan meningkatnya kerapatan alur jika dibandingkan dengan estimasi USLE. Untuk itu, maka diperlukan untuk memasukkan koefisien kerapatan alur pada saat mengestimasi erosi dengan persamaan USLE.Kata kunci : erosi lahan, sheet erossion, rill, USLE, Penisetum purpureum, Rainfall Simulator.
STUDI KEDALAMAN GERUSAN LOKAL PADA PILAR JEMBATAN SIMPANG SURABAYA KRUENG ACEH, BANDA ACEH Fatimah, Eldina
Jurnal Teknik Sipil Vol 3, No 1 (2013): Jurnal Teknik Sipil Volume 3, Nomor 1, September 2013
Publisher : Department of Civil Engineering, Syiah Kuala University

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Simpang Surabaya Bridge positioned at coordinates 503338” LU and 950194,1 BT is located at Kuta Alam sub-district of Banda AcehMunicipality. The bridge was built across the river Krueng Aceh with ± 100 meters long with pillars to support the bridge. Pillars were in the river, resulting in narrowing the river cross section that led to disturbing river flow. Changes in flow velocity caused a scour around the pillars, so it is necessary to study local scour depth on the pillars. There are two types of pillars that existed. One type is located at the upstream side with Cylinder Group-shaped pillars (circular combination type) having the width of one meter and four meters long, while at the downstream part, the pillar type is round pillar-shaped nose with the width and length of one meter and three meters respectively. The aim of this research is to determine the scouring effect on the pillars based on data taken in 2008 and data from current measurement. While theactual local scour depth around the pillars were measured using instrument Qliner where the river was divided into two meters wide per section.Measurement data then is shown in the form of contour and cross section. From field measurement, it is found that the scouring depth at the upstream of the pillar is 0.88m whereas sedimentation occurred at the downstream part of the pillar. By using the measurement data on 2008 and compared with the meassured data, it is found that the Simpang Surabaya pillars were scoured noticeably and need to be protected. From the calculation, the pillars should be protected using riprap with a diameter of 0.945 meters.
Estimation of Site Amplifications from Shear-Wave Velocity at Pyroclastic Deposits and Basins in Aceh Tengah and Bener Meriah District, Aceh Province, Indonesia Rusydy, Ibnu; Jamaluddin, Khaizal; Fatimah, Eldina; Syafrizal, Syafrizal; Andika, Fauzi; Furumoto, Yoshinori
International Journal of Disaster Management Vol 1, No 1 (2017): International Journal of Disaster Management
Publisher : TDMRC Syiah Kuala University

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Earthquake on July 2, 2013, destroyed several buildings in Aceh Tengah district and Bener Meriah district of Aceh Province. This earthquake gives Aceh government a clue that the seismic hazard map must become the reference in development plan in future. To respond this idea, we conduct the research and try to estimate the amplification factor for developing seismic hazard maps of those districts. This study aims to determine the average shear wave velocity up to the depth of 30 meters (Vs30) and the amplification factor of Aceh Tengah district and Bener Meriah district, to build the seismic hazard map of both districts. In this study, we use the MASW (Multi-Channel Analysis of Surface Waves) with 24 geophones in the frequency of 10 Hz at 10 locations to determine the Vs30 beneath the surface. The soil and rock classification from ASCE 2010 and SNI 1726:2012 used to classify the soil/rock based on Vs30 and calculate the predicted amplification factor using the Borcherdt & Eeri equation. The result of this study reveals that the range of Vs30 in the study area is 76 m/s – 308 m/s. The loosest sediment has 76 m/s located at point 2 in Aceh Tengah district. The shear wave velocity of 76 m/s classifies as soft soil (SE). Based on the calculation, the pyroclastic deposit and sediment in the basin of the study area will be amplified the seismic wave in the range of 2.9 to 3.3 times. In the future, we suggest conducting another geophysical survey to determine the correct amplification factor to improve the quality of seismic hazard map.
STRATEGI PENERAPAN EKO-DRAINASE DI KAWASAN GAMPOENG KEURAMAT BANDA ACEH Habibi, Munzirwan; Fatimah, Eldina; Azmeri, Azmeri
Jurnal Teknik Sipil Vol 6, No 3 (2017): Volume 6, Nomor 3, Mei 2017
Publisher : Department of Civil Engineering, Syiah Kuala University

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Abstract: Generally in Gampong Keuramat region still uses the conventional drainage concept. Along with the rapid development that occurred in Banda Aceh, especially at Gampong Keuramat  after the Tsunami in 2004, resulting in the decrease of vacant land that could be used to absorb water into the soil. This matter causes the water system distruption and take affect toward urban flood control. Concerns with these problems it is required to control the peak flows through the structural efforts and to apply environment drainage (eco-drainage). The purpose of this study is to analyze flow rates (Qpasca) drainage system by using the concept of system eco-drainage and formulate strategies to implement the concept of system eco-drainase by using SWOT analysis. The method of data collection is by using secondary data and primary data. The data were processed statistically descriptive and SWOT analysis. From the observations, the existing condition and the road condition and channels in Gampoeng Kueramat need to be maintained and improved. The calculations show that, th service zone I until V occurred the reduction of average  discharge 48.948%, 58.412%, 43.468%, 72.034% and 72.919%. The result from SWOT analysis is obtained some strategies: (1) use the support of society in an effort to overcome the problems of drainage as a puddle with drainage planning sustainable or eco-drainage, (2) to convince the provincial government to support programs / activities of eco-drainage with the allocation of appropriate funds targeted to address the flooding problems, to maintain the continuity of the water and drainage system in Gampoeng Keuramat, (3) use the support of society in land use to make infiltration wells and expand land infiltration in the society environment, and (4) to disseminate to the public for a change paradigm in dealing with the flood of effort to keep the water from settlements with trying to keep the water as long as possible and utilize as much water as possible is called the concept of "eco-drainage". Abstrak: Secara umum di kawasan Gampong Keuramat masih menggunakan konsep drainase konvensional. Seiring dengan pesatnya pembangunan yang terjadi di Kota Banda Aceh khususnya kawasan Gampong Keuramat pasca Tsunami 2004, mengakibatkan semakin berkurangnya lahan kosong  yang bisa digunakan untuk meresapkan air ke dalam tanah. Hal ini menyebabkan terganggunya sistem tata air dan berpengaruh terhadap pengendalian banjir perkotaan. Menyangkut dengan permasalahan tersebut diperlukan pengendalian debit puncak melalui upaya-upaya struktural dan penerapan drainase berwawasan lingkungan (eko-drainase). Tujuan dari penelitian ini adalah melakukan analisis debit aliran (Qpasca) sistem drainase dengan menggunakan konsep sistem eko-drainase dan merumuskan strategi untuk menerapkan konsep sistem eko-drainase dengan menggunakan analisis SWOT. Metode pengumpulan data yaitu menggunakan data sekunder dan data primer. Data diolah secara statistik diskriptif dan analisis SWOT. Dari hasil observasi, kondisi eksisting kondisi jalan dan saluran di Gampoeng Kueramat perlu dipelihara dan ditingkatkan. Hasil analisis SWOT diperoleh strategi-strategi yaitu (1) memanfaatkan dukungan masyarakat dalam upaya mengatasi permasalahan drainase seperti genangan dengan perencanaan drainase berkelanjutan atau eko-drainase, (2) meyakinkan Pemerintah Daerah agar dapat mendukung program/kegiatan eko-drainase dengan pengalokasian dana yang sesuai tepat sasaran untuk mengatasi permasalahan-permasalahan banjir, menjaga kelangsungan air dan saluran drainase di Gampoeng Keuramat, (3) memanfaatkan dukungan masyarakat dalam pemanfaatan lahan untuk membuat sumur resapan dan memperbanyak lahan resapan di lingkungan penduduk, dan (4) melakukan sosialisasi kepada masyarakat untuk merubah paradigma dalam mengatasi banjir dari usaha menjauhkan air dari pemukiman dengan berusaha menyimpan air selama mungkin dan memanfaatkan air sebanyak mungkin yang disebut dengan konsep “eko-drainase”.
FAKTOR PENGEMBANGAN SARANA DAN PRASARANA PELABUHAN PENYEBERANGAN ULEE LHEUE Oktaparizi, Rio; Fatimah, Eldina; Azmeri, Azmeri
JURNAL TEKNIK SIPIL Vol 1, No 4 (2018): Volume 1 Special Issue, Nomor 4, Februari 2018
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jts.v1i4.10057

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Abstract: Located in Meuraxa district, Banda Aceh, Ulee Lheue is the only port that serves the water mode transportation from Banda Aceh to Sabangservices crossing crossing to the city of Sabang and vice versa. The number of tourists visited Sabang increasing very year. The increasing of tourists visited Sabang every year cause port no longer able to accommodate the surge of passengers. Because of that Ulee Lheue port need to develop. The port planned to developed in stages from year 2015 to 2035. Development of Facilities and infrastructure Ulee Lheue ferry port covers an land and sea area. This study aims to determine factors of facilities and infrastructure Ulee Lheue ferry ports. This study used a questionnaire addressed to user and port management, interviews with Ulee Lheue port stakeholders. Obtained 100 sample using the Slovin equations. Questionnaire tested for validity and reliability using SPSS. Data analysis using Likert Scale analysis and USG methods (urgency, seriuosness and growth). The results of this research is a  determine the most dominant factor in the development of Ulee Lheue port, and the suitability of development stages that has been planned in the master plan to the needs of users and port managers. Abstrak: Pelabuhan penyeberangan Ulee Lheue berada di Kota Banda Aceh tepatnya di Kecamatan Meuraxa merupakan satu-satunya pelabuhan penyeberangan yang melayani jasa penyeberangan menuju Kota Sabang. Jumlah wisatawan yang mengunjungi Kota Sabang melalui pelabuhan penyeberangan Ulee Lheue terus meningkat setiap tahunnya, pelabuhan penyeberangan Ulee Lheue direncanakan untuk dikembangkan secara bertahap dari tahun 2015-2035. Pengembangan sarana dan prasarana pelabuhan penyeberangan Ulee Lheue meliputi area darat dan area laut. Penelitian ini bertujuan untuk mengetahui faktor-faktor pengembangan sarana dan prasarana pelabuhan penyeberangan Ulee Lheue. Penelitian ini menggunakan kuesioner yang ditujukan kepada pengguna dan pengelola pelabuhan serta wawancara kepada pemangku kebijakan pada pelabuhan penyeberangan Ulee Lheue, dengan menggunakan rumus persamaan Slovin maka diperoleh sebanyak 100 sampel kuesioner, kemudian sampel diuji validitas dan reliabilitas menggunakan program SPSS. Metode yang digunakan untuk meyelesaikan penelitian ini mengunakan metode analisis Skala Likert dan metode USG (urgency, seriuosness, dan growth) serta penyatuan kedua analisis tersebut. Hasil dari penelitian ini berupa persentase dari persepsi pengguna terhadap pengembangan sarana dan prasarana pelabuhan, mengetahui faktor-faktor yang paling dominan pada pengembangan pelabuhan penyeberangan Ulee Lheue, serta kesesuaian tahapan pembangunan yang telah direncanakan pada masterplan sesuai dengan kebutuhan yang paling dibutuhkan oleh pengguna dan pengelola pelabuhan pelabuhan Ulee Lheue.
EVALUASI KINERJA JARINGAN DRAINASE GAMPONG KUTA ATEUH BERDASARKAN KAPASITAS SALURAN TERHADAP PENATAAN RUANG KOTA SABANG Zulaini, Liza; Yulianur, Alfiansyah; Fatimah, Eldina
JURNAL TEKNIK SIPIL Vol 1, No 4 (2018): Volume 1 Special Issue, Nomor 4, Februari 2018
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jts.v1i4.10067

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Abstract: Gampong Kuta Ateuh is the center of settlement and government office areas concerned to guard its territory against flooding inundation, so it is necessary a representative drainage handling. The purpose of this research is to evaluate the performance of drainage network of Gampong Kuta Ateuh based on channel capacity on existing spatial condition, and to evaluate the performance of drainage network based on channel capacity on Sabang City Spatial Condition. Based on the result of performance evaluation of drainage network at Gampong Kuta Ateuh on existing spatial condition based on channel capacity obtained 2 (two) unsafe channel segment which yield minus value (-) for Qs-QT. Based on spatial arrangement that is at least the proportion of 30% RTH (Green Open Space) of each DTH produces 5 (five) unsecured channel segments, this shows current RTH Kota Sabang> 30%. A value of the runoff coefficient (C) has a range between 0,5453 and 0,5025. Spatial arrangement of this research has resulted in many channels damaged by the arrangement of road landscapes that do not follow the Ministerial Decree No.05 / PRT / M / 2012 on Tree Planting Guidance on Road Network Systems. The path of plant on the road should be placed on the edge of traffic lane and pedestrian path, after the pedestrian path then the channel. Abstrak: Gampong Kuta Ateuh merupakan pusat permukiman dan kawasan perkantoran pemerintah yang berkepentingan untuk menjaga wilayahnya terhadap banjir genangan sehingga perlu penanganan drainase yang representatif. Tujuan dari penelitian ini adalah mengevaluasi kinerja jaringan drainase Gampong Kuta Ateuh berdasarkan kapasitas saluran terhadap kondisi tata ruang existing, dan mengevaluasi kinerja jaringan drainase berdasarkan kapasitas saluran terhadap kondisi Penataan Ruang Kota Sabang. Berdasarkan hasil evaluasi kinerja jaringan drainase Gampong Kuta Ateuh pada kondisi tata ruang existing berdasarkan kapasitas saluran diperoleh 2 (dua) ruas saluran yang tidak aman dimana menghasilkan nilai minus (-) untuk Qs-QT. Berdasarkan penataan ruang yaitu minimal proporsi 30% RTH (Ruang Terbuka Hijau) dari tiap DTH menghasilkan 5 (lima) ruas saluran yang tidak aman, hal ini menunjukkan saat ini RTH Kota Sabang > 30%. Nilai Koefisien aliran (C) berdasarkan penataan ruang saat ini adalah paling tinggi 0,5453 sedangkan berdasarkan penataan ruang dengan proporsi minimal RTH 30% adalah 0,5025. Penataan ruang dari penelitian ini menghasilkan bahwa banyak saluran yang rusak akibat penataan lanskap jalan yang tidak mengikuti Permen PU No.05/PRT/M/2012 tentang Pedoman Penanaman Pohon pada Sistem Jaringan Jalan. Jalur tanaman pada jalan sebaiknya diletakkan ditepi jalur lalu lintas, yaitu diantara jalur lalu lintas kendaraan dan jalur pejalan kaki. Setelah jalur pejalan kaki kemudian saluran.
KAJIAN PERLETAKAN KRIB PADA ALIRAN SUNGAI KRUENG ACEH Tanjung, Muhammad Sahriat; Fatimah, Eldina; Masimin, Masimin
Jurnal Teknik Sipil Vol 6, No 2 (2017): Volume 6, Nomor 2, Januari 2017
Publisher : Department of Civil Engineering, Syiah Kuala University

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Abstract: The riverbank damage (erosion) which iscaused by the river scouring in Krueng Aceh River Section in Lamsie Village is dominated by behavior changes of the river due to flood discharge and flow direction.A river geometric changes process is accelerated and enhanced by the human activities which are carried out continuously such as the sand and stone mining in the river zone unpermitted. From the investigation carried out in the review location, it is found that the riverbank protection has ever been constructed by using gabion construction along the riverbank eroded, but the construction cannot restrain river water scouring so that the construction has been collapsed. To prevent the continuing erosion, the other alternative chosen is by constructing the groynes. The groynes are constructed to deflect the river current toward in turn, so that the erosion effect of the riverbank in the out turn can be reduced. This Study aims to obtain the flow pattern and flow velocity in the existing condition and the conditions of 3 (three) scenarios of groynes location in 2 (two) review locations, the first scenario mentioned that the groynes position is perpendicular to the river flow, the second mentioned that the groynes position is leaning to the upstream and the third one mentioned that the groynes position is leaning to the downstream. This study is carried out by identifying existing river condition first and then analyzed the modeling simulation using software of Surface Modeling System (SMS) running RMA2. The lengths are between 8 – 10 meter with the interval of each groynes is 15 meter. The flood discharge used in the simulation is 5 years which is 1067.00 m³/second. The result of the modeling simulation of the groynes location position found is the position which is perpendicular to the river flow (00 – 50)or scenario 1st (first) and it becomes the most effective position. This result is expected can be used as the reference for the policy maker in making the decisions in protecting the riverbank protection and controlling the water destructive power in the watershed.Keywords : Groynes, Flow Pattern, Flow Velocity, Flow DirectionAbstrak: Kerusakan tebing (Erosi) yang terjadi disebabkan oleh gerusan pada pias sungai Krueng Aceh di desa Lamsie karena didominasi oleh perubahan perilaku sungai akibat debit banjir dan arah aliran. Proses perubahan geometri suatu sungai ini menjadi dipercepat atau diperparah oleh kegiatan manusia yang secara terus menerus melakukan aktifitas penambangan pasir serta batu di zona sungai yang tidak dibenarkan. Dari investigasi di lokasi tinjauan upaya perlindungan tebing menggunakan konstruksi bronjong sudah pernah dibangun disepanjang tebing sungai yang tererosi, namun bangunan tersebut belum mampu menahan gerusan air sungai, sehingga konstruksinya kini runtuh. Untuk mencegah terjadinya erosi yang berkelanjutan, alternatif lain adalah membuat bangunan krib. Perletakan konstruksi krib dilakukan untuk membelokkan arus sungai ke arah belokan dalam, sehingga efek erosi tebing dibelokan luar dapat tereduksi. Penelitian bertujuan untuk mengetahui bentuk pola aliran dan kecepatan aliran pada kondisi existing dan 3 (tiga) skenario perletakan konstruksi krib pada 2 (dua) lokasi tinjauan, skenario pertama posisi krib tegak lurus aliran, skenario kedua krib condong ke hulu dan skenario ketiga krib condong ke hilir. Kajian ini dilakukan dengan mengidentifikasi kondisi sungai eksisting kemudian dianalisis secara simulasi pemodelan menggunakan software Surface Modeling System (SMS) running RMA2. Panjang konstuksi krib antara (8 – 10 meter) dengan jarak antara (interval) krib per (15 meter). Debit banjir 5 tahunan digunakan dalam simulasi, yang besarnya adalah 1067.00 m³/detik. Hasil simulasi menunjukan posisi perletakan konstruksi krib tegak lurus terhadap aliran (00 – 50) atau skenario 1 (satu) memberikan hasil yang efektif untuk diterapkan. Hasil ini diharapkan dapat menjadi acuan dalam rangka membuat kebijakan tentang pelaksanaan pengamanan tebing dan pengendalian daya rusak air di daerah Lamsie.