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PEMODELAN SEDIMENTASI PADA TAMPUNGAN BENDUNG TIBUN KABUPATEN KAMPAR Bambang Sujatmoko; Mudjiatko Mudjiatko; Mathias Robianto
Jurnal Sains dan Teknologi Vol 11, No 2 (2012): Jurnal Sains dan Teknologi
Publisher : Fakultas Teknik Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1126.29 KB) | DOI: 10.31258/jst.v11.n2.p%p

Abstract

Pemodelan sedimentasi pada suatu tampungan bendung diperlukan untuk mengetahui pergerakan sedimen yang terjadi dan berapa besar perubahan dasarnya. Untuk memudahkan proses pemodelan dapat digunakan bantuan teknologi yaitu dengan menggunakan software Surface-water Modelling System. Program ini dapat memodelkan arus dan sedimentasi dalam tampungan bendung, dimana hasil pemodelan dari program ini berguna untuk mengetahui pola aliran dan distribusi kecepatan aliran serta distribusi sedimen yang terjadi pada tampungan bendung. Penelitian ini bertujuan untuk memperlihatkan pergerakan arus dan sedimen pada tampungan bendung Tibun dengan menggunakan software Surface-water Modelling System. Pada pemodelan ini, data topografi, debit banjir, dan elevasi muka air diolah dengan menggunakan Resources Management Associates-2 dan Geometri File Generation yang menghasilkan bentuk aliran yang terjadi dan SED2D mengolah parameter-parameter sedimen dengan hasil berupa pergerakan sedimen yang terjadi pada tampungan bendung. Hasil pemodelan sedimentasi pada tampungan bendung Tibun, menunjukkan bahwa kecepatan aliran yang terjadi pada tampungan bendung sangat kecil nilainya. Kecepatan aliran pada periode ulang 10 tahun lebih besar nilainya dibandingkan periode ulang 5 tahun pada titik dan lokasi yang sama. Sebaliknya, perubahan dasar tampungan pada periode ulang 10 tahun lebih kecil nilainya dibandingkan dengan periode ulang 5 tahun pada titik dan lokasi yang sama.Kata Kunci : pemodelan sedimentasi, tampungan bendung, pola aliran, perubahan dasar
Model Laboratorium Gerusan Lokal Pada Pilar Jembatan Tipe Grouped Cylinder Arie Perdana Putra; Mudjiatko Mudjiatko; Siswanto Siswanto
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Local scour at bridge pillars that occurs continuously will cause damage to the bridge structure. Many forms of pillar have been developed to minimize local scouring, but yet provide maximum results. Laboratory model has been developed to identify the local scour phenomena on the grouped cylinder pillar by looking at the phenomena with and without pillar protector. The bed of model is using Kampar sand with grain size d35 = 0,285 mm, d50 = 0,330 mm and d65 = 0,380 mm and Gs = 2,63. Three variations of the flow used in this research is classified on the type of subcritical flow with Froude number ranged from 0,46354 – 0,76903. Reynolds number in Fr1 scored 1658,416 then included in the transitional flow and turbulent flow occur in Fr2 scored 3081,683 and Fr3 scored 4381,188. Hjulstorm graphic shows that the granules of gradation used in this research in moving zone. Hydrodynamic flow in pillar causes downflow on the front pillar and wake vortices are formed on the back, so that the presence of these forces will create a horseshoe vortex at the bottom of the pillar. The equilibrium of scour depth against time function occurred at minute 75. The maximum ratio of scour depth (ds/b)  is 2,9 which occurs in Q3P. Pillar protector of curtain type can reduce scour depths  of up to 62,07 %. Sediment transport analysis result prove that the higher Froude number is used the bigger the granules are transported.  Key word  : local scouring, laboratory model, grouped cylinder pillar, hydrodynamic flow, depth ratio.
Simulasi Kolam Retensi Untuk Mengatasi Banjir Genangan Di Kota Bangkinang Bagian Barat Bangun Aldilla Rachman; Mudjiatko Mudjiatko; Trimaijon Trimaijon
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Most of the surface run off water in rainy season in Bangkinang flow to Petai I river, and this condition makes the Petai I river unable to deliver it anymore to Kampar river, it will flood some region in Bangkinang. A concept has been developed according to this condition it devides the raining region into two parts for the Jendral Ahmad Yani street, the east region to Petai I river and the west to Polsek Bangkinang channel. Soil permeability is determined to get a rate of infiltration in the retention pond. Soil samples were taken in the location of research using hand auger and then taken to the laboratory for testing permeability values with permeameter. From the test results obtained by the value of the infiltration is 7.44 x10-7 cm/sec. The retention pond is simulated to reduce debit of surface run off, and at the end it will reduce planned channel dimension, also the lands for drainage channel can be reduced. Retention pond are planned about six retention ponds then simulated by reducing the surface run off water approximately20%, but the retention pond size needed is too big ie between 28,7-5000 hectare, that’s why the retention pond size must be suited with the size of the land. After the making of this retention pond, the debit surface run off so small, and it makes the channel dimension stable. So the making of retention pond in west Bangkinang cant be made as alternetive to reduce the surface run off water. Key words :channel dimension, retention pond, surface run off.
Analisis Sedimentasi Lahan DAS Embung Uwai Kabupaten Kampar Menggunakan Metode Usle Berbasis Sistem Imformasi Geografis (SIG) Muhammad Hadi Hasibuan; Bambang Sujatmoko; Mudjiatko Mudjiatko
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Landuse change at Uwai watershed is causing increase on the amount of erotion. analisys of the potential of erotion on Uwai Watershed involves the sedimentation that occured on the watershed and also that enter the reservoir. The estimation method used to determine the magnitude of erotion occured is Universal Soil Loss Equation (USLE) by utilizing the Geographic Information System (GIS). The capacity of sediment transport is calculated based on equation by Verstraten. The result of the research showed that the watershed for Uwail is consisted of 44 subbasin, the highest sedimentation occured on subbasin 17 with the magnitude of 55,113.75 ton/year. Meanwhile the lowest sedimentation occcured on subbasin 33 with the magnitude of 123.03 ton/year. The erotion that enters the retention pool of Uwai which will be the sedimentation on the retention pool is 6199.9 ton/year. Hence the shallowing that will occur is 14,2 mm/year.Keywords: sedimentation, USLE, GIS,
Kalibrasi Model Hidorologi Perubahan Tata Guna Pada Sub DAS Kampar Kanan Dalam Program HEC-HMS Ferry Virgiawan; Bambang Sujatmoko; Mudjiatko Mudjiatko
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Kampar Kanan watershed has experienced landuse changes in the recent years. It is important to be able to study about the magnitude of runoff changes due to landuse changes in Kampar Kanan watershed. Hidrologic model was extracted from HEC-GeoHMS in GIS environment to model Kampar Kanan Watershed and the effect of landuse changes on the watershed.Analysis and calibration using HEC-HMS was conducted on hydrologic model. Calibration was conducted based on observed streamflow of AWLR Danau Bingkuang and gave the value of optimized parameters which are, 120% of the initial estimated value for curve number and 150% of the initial estimated value for initial abstraction. Runoff simulation using optimized parameters and inputs of frequency storm with exceedence probability of 2% yields the streamflow magnitude of 641 cms and 617 cms for landuse simulation of 2008 and 2014 respectively. The results of HEC-HMS calculation showed a 3.7% decrease in runoff streamflow on Kampar Kanan watershed.Keywords : Calibration, hydrologic model, landuse changes, watershed, HEC-HMS,
Simulasi Pola Aliran Dan Pola Sedimentasi Pada Danau Cipogas Kecamatan Rambah Kabupaten Rokan Hulu Fahrul Rozi; Mudjiatko Mudjiatko; Rinaldi Rinaldi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Cipogas lake has a non-uniform topography, that non-uniform topography caused flow patterns. Which results in a non-uniform of velocity and sediment distribution and then influences the changing trend of the reservoir bed configuration. Hydraulic simulation has used a RMA-2 model to determine flow patterns and velocity distribution. Topographic data, flood discharge, and surface water elevation are used as basic data for RMA-2 processing. Sediment transport simulation has used a SED2D module to generate sediment movements. The grain size and sediment concentration are used as a basis for SED2D processing. The simulation results showed that the flow pattern affects the velocity distribution and sediment distribution at certain times in the lake so that there is a change in the lake bed configuration. The bed configuration of the cipogas lake based on simulation results is classified in the Transition and Dunes. Keyword: flow patterns, sediment distribution, bed configurations
Kajian Kapasitas Saluran Pada Sistem Jaringan Drainase Untuk Mengatasi Genangan Pada Wilayah Telkom Dan Pasar Buah (Jalan Sudirman Pekanbaru) Fahrul Iswar; Mudjiatko Mudjiatko; Trimaijon Trimaijon
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

This study analyzed drainage capacity, conducting drainage  flow patterns  that affect  the Sago River,  to  cope with  floodwaters  in the  area of  the intersection of  Jalan  Sudirman-Jalan Hang Tuah (Office Telkom) and Pasar Buah, Pekanbaru, and calculate the flow rate when the  rainfall  intensity  high. The data  required  in  this study  conducted  in two ways, namely  field surveys  and  institutional  surveys.  Hydrological  analysis  was conducted to determine  the intensity of  the rain,  in the form of daily rainfall data  for 15 years  (1997-2011).  From the analysis of  the plan  obtained  daily  rainfall  (R24)  for the  5-year anniversary  when  the  study  area  is  126.798  mm.  Tackle the problem  at the point of flooding Pasar Buah can be done by adding dimension to channel SD SG KR2 with added height channel (H) between 5-50 cm. Tackle the problem of flooding at the point of Telkom can be done by adding dimension  to channel SD SG KR5 with added height channel  (H) between 15-50 cm and channel SG AS KR1 with added height channel (H) between 15-50 cm. Keywords: drainage, flow pattern, flow, flood
Gerusan Lokal Di Sekitar Pilar Jembatan Bentuk Oblong Dengan Material Dasar Sungai Kampar Imam Syafni L; Mudjiatko Mudjiatko; Trimaijon Trimaijon
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Local scours that occur continuously will cause damage to the pillars of the bridge that can endanger the stability of the bridge structure. Laboratory model has been developed to identify the phenomena of local scour on the oblong pillar with and without pillar protector. Kampar sand with grain size d35 = 0,285 mm, d50 = 0,330 mm and d65 = 0,380 mm and Gs = 2,63 is used in the bed of flume model. Three variations of  flow used in this research is classified on the type of subcritical flow with Froude number ranged from 0,46354 – 0,76903. Reynolds number in Fr1 scored 1658,416 (transitional flow), Fr2 scored 3081,683 and Fr3 scored 4381,188 then included in the turbulent flow. The results of the data analysis showed base granular moves in each test Froude value shown in the diagram Shields. Hjulstorm graphic also shows that the granules of gradation used in this research in moving zone. Hydrodynamic flow on the pillars of the downflow lead and create horsehoe vortex at the base of the pillar which eroded material around the pillar . Scour that occurs started having equilibrium at minute 75 . The maximum ratio of scour depth (ds/b)  is 0,44 which occurs in Q3PL .Pillar protector of curtain type can reduce scour depths up to 28,57%. Sediment transport analysis results proved that the higher the Froude number is used, the bigger the granules are transported.  Key Word : local scouring, laboratory model, oblong pillar, hydrodynamic flow,  depth ratio
Analisis Kapasitas Drainase Jalan BTN Lago Permai Kota Pangkalan Kerinci Kabupaten Pelalawan Lessy Maretha; Rinaldi Rinaldi; Mudjiatko Mudjiatko
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The effect of residential areas development in the city of Pangkalan Kerinci causing a land conversion thus, increasing of surface waters flow due to rain. Surface runoff caused a flood inundation in Jalan Permai BTN Lago. Therefore we need an analyz to reduce flood inundation by analyzing the capacity of drainage channels ranging from the most upstream channel to the final disposal site gas pipeline passing through the country. The existing drainage channels compared with the discharge channel plan with return period of 5 years. Results of comparative analysis is 17.48% drainage channel had width modified (b), 35.92% had modified the width (b) and height (h), 44.66% of drainage channels are not modified, and 1.94% are the new channel. The most downstream channel passes through a gas pipeline that takes cross-sectional modification into reservoir. It required help of a pump for pumping water from the reservoir into the exhaust channel / outlet. reservoir accept 5.63 m3 / sec discharge for the return period of 5 years. Modified existing drainage channels into reservoir withsize (2m x 5m x 230m) using a pump with a capacity of 5 m3 / sec.Keywords: drainage systems, capacity, dimensions
Analisis Potensi Erosi DAS Petapahan Pada Embung Petapahan Lukman Nul Hakim; Mudjiatko Mudjiatko; Trimaijon Trimaijon
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Land use change in the Petapahan Watershed will increase the flow of the surface. The surface flow will increase the amount of soil erosion and sediment transport capacity. Sediment transport will enter the Petapahan Reservoir, so that will lead to silting on thePetapahan Reservoir. It will have an impact on the function and effective life of the reservoir. The USLE method was used to estimate erosion in the Petapahan watershed. GIS was used to predict the value of USLE parameters. The result of analysis shows thatErosion occurring in Petapahan Watershed is in low grade (15 - 60 ton/ha/year) and the potential of erosion that goes to Petapahan Reservoir is 294,8287 ton/year.Keywords: land use, erosion potential, USLE, GIS
Co-Authors Ahmad Fauzi Andika Satria Agus Arie Perdana Putra Bambang Sujatmoko Bangun Aldilla Rachman Bima Saputra Fahrul Iswar Fahrul Rozi Ferry Virgiawan Hardi Daim Hendra Mulyadi Muslim Imam Syafni L Lessy Maretha Lukman Nul Hakim M Tony Iskandar Mathias Robianto Michael Chrisyie Daniel Bintang Muhammad Hadi Hasibuan Rinaldi Rinaldi Siswanto Siswanto Sudarmanto Sudarmanto Sutikno, Sigit Trimaijon Trimaijon Wikrine Teriyoko