scholarly journals ANALYSIS AND EVALUATION OF THE DRAINAGE NETWORK SYSTEM IN THE HOUSING AREA OF VILA RIZKI ILHAMI 2 SAWANGAN, DEPOK-WEST JAVA

ASTONJADRO ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 1
Author(s):  
Ridwan Jamaludin Ashari ◽  
Arien Heryansyah
Keyword(s):  
Water Flow ◽  
Flood Control ◽  
Water Discharge ◽  
Residential Area ◽  
National Standard ◽  
Drainage Network ◽  
Flood Discharge ◽  
Excess Water ◽  
Discharge Plan ◽  
The Impact

<p>The impact that occurs from the rampant development of residential areas will certainly make the volume of surface water flow or run off become large. Drainage is a system created to deal with the problem of excess water flow that is above the surface of the earth, some of the things that cause excess water are caused by high water intensity and the long duration of rain. In this study, the problem that occurred was in the drainage network in the residential area of Vila Rizki Ilhami 2 Sawangan, which was a transfer of land functions from infiltration land into a residential area. Evaluation that must be done is covering hydrological analysis and hydraulics analysis to get the amount of flood discharge plan that will be used to analyze the capacity of the planned channel so that no flooding occurs at the location of the settlement area when the settlement is built, recommendations for drainage system design and determine the size of the river dimension / size / times that should be made when accommodating water discharge during maximum rain so that the flood control system can be well integrated. With 3 methods of calculating rainfall, the method of calculation is selected using the gumbel method which is SNI (Indonesian National Standard) with a return period of 2 years, 5 years and 10 years. From the evaluation obtained is to add height height or free board to accommodate flood discharge plan.</p>

scholarly journals Drainage Capacity Analysis in The Area of Angke Jaya Tambora West Jakarta

2020 ◽  
Vol 2 (3) ◽  
Author(s):  
Naufal Alfathan Bagas
Keyword(s):  
Residential Area ◽  
Rational Method ◽  
Capacity Analysis ◽  
Flood Discharge ◽  
Excess Water ◽  
Discharge Plan ◽  
Housing Area ◽  
Drainage Channels ◽  
Drainage Capacity

Drainage is used to reduce and remove excess water in an area so that the area can be optimally enabled. This research aims to analyze and examine the drainage problems in the Angke Jaya Tambora West Jakarta Housing area, the drain channels are poorly maintained and often flooding. The data used in this study are primary and secondary, in the planning of flood debt calculations used 2nd anniversary. For the calculation of flood discharge plan to use rational method and coupled with the discharge of flood household, and the result will be compared with existing conditions of drainage channels in the residential area Angke Jaya Tambora West Jakarta. Obtained flood discharge plan of 13.225 m3/sec, for the existing condition of drainage channels 5 channels enter the category is not safe because the condition of existing capacity of channels is less than flood discharge plan, namely channels A4, D5, D6, D8, and D9. The planning of the wells to accommodate the excess discharge flooding, and it takes 19 pieces of replacement wells on the A4 channel, 1 on the D5, D, D8, and D9 channels.

scholarly journals KAJIAN POTENSI HIDROLOGI EMBUNG IRIGASI WAE ROBANG DI KABUPATEN ROTE NDAO

2016 ◽  
Vol 13 (2) ◽  
Author(s):  
Siti Nurasiyah
Keyword(s):  
Return Period ◽  
Rainy Season ◽  
Irrigation Area ◽  
Design Capacity ◽  
Flood Discharge ◽  
Excess Water ◽  
Discharge Plan ◽  
Reservoir Design ◽  
Retention Basin ◽  
Basin Area

KAJIAN POTENSI HIDROLOGI EMBUNG IRIGASI WAE ROBANG DI KABUPATEN ROTE NDAOStudy The Potential Of Hidrology Wae Robang Irrigation Retention Basin In Rote Ndao DisrtrictSiti NurasiyahDepartemen Pendidikan Teknik Sipil, Universitas Pendidikan Indonesiaemail: [email protected] Ndao District is one of the districts in the province of NTT, which has a fairly extensive irrigation areas and potential but less discharge to irrigate the irrigation area. Rote Ndao District has topography is hilly and much of the basin area can hold water, so one way to solve this problem is to build retention basin to hold excess water during the rainy season. Wae Robang retention basin is one of the retention basin will be built in Rote Ndao District. One aspect that must be examined in the planning of retention basin is hydrological analysis. The purpose of the analysis of hydrology at the location of Robang Wae retention basin is to assess the potential of existing hydrological includes inflows fill retention basin, retention basin reservoirs, and flood discharge plan. From the results of the hydrological analysis showed that the volume of water that can fill an Wae Robang retention basin during the rainy season amounted to 1,774,029 m3, retention basin reservoir design capacity Wae Robang retention basin amounted to 1,348,859 m3, and the flood discharge plan with a return period of 50 years for the spillway Wae Robang retention basin amounted to 21.71 m3/ sec.Keywords: Wae Robang, retention basin, hydrologi AbstrakKabupaten Rote Ndao merupakan salah satu kabupaten di provinsi NTT yang memiliki areal irigasi yang cukup luas dan cukup potensial tetapi kekurangan debit air untuk mengairi areal irigasi tersebut. Kabupaten Rote Ndao ini memiliki kondisi topografi yang berbukit-bukit dan banyak daerah cekungan yang dapat menampung air, maka salah satu cara untuk menanggulangi masalah ini adalah dengan membangun embung yang berguna untuk menampung air yang berlebihan pada waktu musim hujan. Embung Wae Robang merupakan salah satu embung yang akan dibangun di Kabupaten Rote Ndao. Salah satu aspek yang harus ditelaah dalam perencanaan embung adalah analisis hidrologi. Tujuan dari analisis hidrologi di lokasi embung Wae Robang ini adalah untuk mengkaji potensi hidrologi yang ada meliputi aliran masuk yang mengisi embung, tampungan embung, dan debit banjir rencana. Dari hasil analisis hidrologi didapatkan bahwa volume air yang dapat mengisi kolam Embung Wae Robang selama musim hujan adalah sebesar 1.774.029 m3, kapasitas tampung desain embung Wae Robang adalah sebesar 1.348.859 m3, dan debit banjir rencana dengan kala ulang 50 tahun untuk pelimpah embung Wae Robang adalah sebesar 21,71 m3/det.Kata kunci : Wae Robang, embung, hidrologi

scholarly journals Studi Ketercukupan Kapasitas Saluran Jalan Pada Jalan Dengan Kelandaian Cukup Tinggi (Studi Kasus Jalan Kawah Ijen, Bondowoso)

2021 ◽  
Vol 9 (2) ◽  
pp. 109-115
Author(s):  
Noor Salim
Keyword(s):  
Water Discharge ◽  
Rectangular Channel ◽  
Daily Rainfall ◽  
Design Flood ◽  
The Road ◽  
Smooth Flow ◽  
Flood Discharge ◽  
Discharge Plan ◽  
Drainage Design ◽  
Comprehensive Study

Stagnant water in the highway area is the cause of disruption of the smooth flow of vehicle traffic. Even the overflowing of air from the road creates a large flood supply in the road area. The problem of flooding in the Ijen Bondowoso crater road area was also triggered by the inability of the channel that functions to fill the flood water discharge that occurs in this road area. From this problem, it is necessary to study regarding the adequacy of the capacity of the road channel on roads with a fairly high slope such as what happened in the area of Ijen Crater road, Bondowoso From the results of this study it can be seen that the average daily rainfall is the result of 100,461 mm and the relative average rainfall intensity of each channel for the 10 year return period is 63,301 mm / hour. The flood discharge plan is calculated from 2 to 100 years. In this drainage design analysis, the design flood discharge is calculated for only 10 years, and a planned flood discharge is obtained of 0.423 m3 / second. The channel required to fill the flood discharge is a rectangular channel with the size B = H = 0.6 m. It is recommended to always carry out a comprehensive study with regard to changes in the road body of the road along with the increase in existing traffic. As well as the infrastructure of the existing channel and feeding the community around the road, it will be clean and not littering, especially in the road channel

scholarly journals Investigation of Flood Distribution and Feeding Performance of Artificial RED Garden in Shahr-E-Reza on Quantity and Quality of Groundwater Table, Isfahan, Iran

2018 ◽  
Vol 1 (4) ◽  
Author(s):  
Saeid Eslamian1 ◽  
Ahmad Godarzi1 ◽  
Kaveh Ostad-Ali-Askari2 ◽  
Hossein Gholami2 ◽  
Morteza Soltani3 ◽  
...  
Keyword(s):  
Water Consumption ◽  
Flood Control ◽  
Groundwater Resources ◽  
Groundwater Table ◽  
Artificial Feeding ◽  
Feeding System ◽  
Excess Water ◽  
Observation Wells ◽  
The Impact

Increasing water consumption has increased using of synthetic nutritional methods for enriching groundwater resources. Artificial feeding is a method that can save excess water for using in low level water time in underground. The purpose of this study is to evaluate the performance of the flood dispersal and artificial feeding system in the Red Garden of Shahr-e-Daghshan and improving, saving    quality of the groundwater table in the area. In order to investigate the performance of these plans, an area of 1570 km2 was considered in the Southern of Shah-Reza. The statistics data from 5 years before the design of the plans (1986-2002) related to flood control fluctuations in 20 observation wells and many indicator Qanat were surveyed in this area. The annual fluctuations in the level of the station show a rise in the level of the station after the depletion of the plan. Dewatering of the first and second turns, with an increase of more than one meter above groundwater level, has had the highest impact on the level of groundwater table in the region. Reduced permeability at sediment levels, wasted flood through evaporation and wasteful exploitation of groundwater resources, cause to loss of the impact on the increase in the level and quality of groundwater in the area, especially in the dry, drought season and recent high droughts.

Analysis on Hydrodynamic Load that Induces High Dam Body Vibration

2014 ◽  
Vol 580-583 ◽  
pp. 1812-1815
Author(s):  
Chun Tao Wang ◽  
Hong Xia Ding ◽  
Hui Lv
Keyword(s):  
Water Flow ◽  
Back Analysis ◽  
Wall Pressure ◽  
Arch Dam ◽  
Shock Load ◽  
Flow Induced Vibration ◽  
Discharge Flow ◽  
Plunge Pool ◽  
Flood Discharge ◽  
The Impact

It is difficult to get a theoretic answer to the water flow load features of high dam flood discharge. Through direct measurement of water flow load features by arranging a surface pressure cell, the complicated point-surface conversion was avoided, and the shock load and surge load features were obtained. For the dam body outlet wall pressure, isolated the fluctuating load applied to the plunge pool floor and the downstream dam surface, the impact of the fluctuating load to the arch dam dynamic response at the flood discharge flow outlet was obtained, and then the equivalent fluctuating load on each discharge flow outlet was obtained by using flow-induced vibration back analysis. The test shows that the energy of the shock load and the surge load mainly centers in a frequency range between 0~1Hz, the shock load is about 2.5-6 times that of the surge load, and the surge load is about 4 times that of the outlet wall pressure.

scholarly journals KAJIAN PERENCANAAN CHECKDAM KALI NGASINAN KANAN DESA NOTOREJO KECAMATAN GONDANG KABUPATEN TULUNGAGUNG

2018 ◽  
Vol 1 (2) ◽  
Author(s):  
Ahmad Nasirudin ◽  
Sigit Winarto ◽  
Sudjati Sudjati
Keyword(s):  
Flood Control ◽  
River Flow ◽  
Sediment Concentration ◽  
Flood Discharge ◽  
Discharge Plan ◽  
Pearson Type ◽  
Bridge Structures ◽  
Upstream Part ◽  
Agricultural Areas ◽  
The Village

ABSTRACT Checkdam is a controlling building created because of the flow of water with a large enough sediment concentration, where the sediment comes from soil erosion in the upstream part of the river, to find out the analysis of hydrology, regarding its rainfall, analyze the flood discharge. With the form of a checkpoint in the village of Notorejo, it can prevent and reduce disasters due to the flow of sediments that are formulated in such a way that the river concerned can function normally and effectively in terms of two angles, namely flood control and river development. Rainfall based on calculation of log pearson type III on R20 is 100mm, and Flood Debit Plan 167 m3 / dt. The ability of the sediment capacity of 700,692 m3 / dt and the capacity of sediment capacity to remain 525,519. and able to withstand shear force and rolling stability, this discharge plan is useful for reducing sediment that enters the river salts and provides safety of surrounding agricultural areas due to erosion, stabilizes the riverbed, directs river flow and reduces the occurrence of breakdowns in bridge structures along the river flow mate. Keywords: checkdam, hydrology, sediment, flood discharge, stability. 

Investigation of the influence of the flow structure on the accuracy of flow measurement before a hydrometric structure in an open channel

2020 ◽  
pp. 41-44
Author(s):  
Anatoly Kusher
Keyword(s):  
Velocity Profile ◽  
Flow Velocity ◽  
Water Flow ◽  
Flow Measurement ◽  
Water Discharge ◽  
Critical Depth ◽  
Flow Measurements ◽  
Study Results ◽  
Flow Velocity Profile ◽  
Upstream Flow

The reliability of water flow measurement in irrigational canals depends on the measurement method and design features of the flow-measuring structure and the upstream flow velocity profile. The flow velocity profile is a function of the channel geometry and wall roughness. The article presents the study results of the influence of the upstream flow velocity profile on the discharge measurement accuracy. For this, the physical and numerical modeling of two structures was carried out: a critical depth flume and a hydrometric overfall in a rectangular channel. According to the data of numerical simulation of the critical depth flume with a uniform and parabolic (1/7) velocity profile in the upstream channel, the values of water discharge differ very little from the experimental values in the laboratory model with a similar geometry (δ < 2 %). In contrast to the critical depth flume, a change in the velocity profile only due to an increase in the height of the bottom roughness by 3 mm causes a decrease of the overfall discharge coefficient by 4…5 %. According to the results of the numerical and physical modeling, it was found that an increase of backwater by hydrometric structure reduces the influence of the upstream flow velocity profile and increases the reliability of water flow measurements.

Metal Contamination of Stream Waters under the Impact of Tanneries

2006 ◽  
Vol 33 (2) ◽  
pp. 55 ◽  
Author(s):  
MARIA LUCIA KOLOWSKI RODRIGUES ◽  
MILTON LUIZ LAQUINTINIE FORMOSO
Keyword(s):  
Water Quality ◽  
Water Discharge ◽  
Solid Material ◽  
Total Variance ◽  
Oxygen Conductivity ◽  
Contamination Degree ◽  
Iron Aluminum ◽  
Relevant Variables ◽  
Stream Waters ◽  
The Impact

This study evaluated the contamination of water samples from Cadeia and Feitoria rivers (Rio Grande do Sul State, Brazil), affected by tannery activities. From July 1999 to April 2000, four sampling campaigns were performed at ten sites in order to evaluate selected metals and ancillary physicochemical variables. Sample preservation and analyses followed recommendations of the Standard Methods. Factor analysis was used to obtain statistical indexes representing the contamination degree of waters evaluated. The information was summarized in two principal components. The first, which accounted for 50% of the total variance, was associated to a tannery contribution and generated a contamination index. Total, Suspended and Dissolved Solids, Dissolved Oxygen, Conductivity, Chromium, Manganese, Copper, Nickel, Sodium, Calcium, Potassium, and Magnesium were the well-correlated variables with this first component. The water quality decreased from headwaters up to mouth along both streams, but the most contaminated sites were located at the lower reach of Feitoria river (Ivoti and Lindolfo Collor cities), where tanneries are concentrated. After the entrainment of Feitoria waters (São Sebastião do Caí municipality), Cadeia river also presented an increased contamination degree. The application of statistical randomization tests highlighted these same sites as significantly distinct from the others. Water contamination also showed association to flow variations, and a poorer water quality was observed during the dry period (January). The second component, in which Iron, Aluminum, and Suspended Solids were the relevant variables, was loaded with 15% of the total variance. It was linked to natural events, since higher factor scores in this component were obtained during a period of increased water discharge (October), which caused resuspension and entrainment of solid material to the rivers bed. As a final result of the study, sampling stations were classified according to the contamination degree, and graphically represented on a basin map, which synthesized the environmental diagnosis.

The Performance Analysis of Calcium Silicate Composited Wall's Impact Resistance

2013 ◽  
Vol 671-674 ◽  
pp. 596-601
Author(s):  
Ming Ming Chen ◽  
Zhong Tao ◽  
Hen Min Zhang ◽  
Wen Zheng Yu
Keyword(s):  
Performance Analysis ◽  
Calcium Silicate ◽  
Impact Resistance ◽  
Engineering Application ◽  
National Standard ◽  
Minimum Standard ◽  
Impact Experiment ◽  
Interior Walls ◽  
The Impact

This paper introduces the impact experiment and an engineering application of the new composited wall which composed of calcium silicate composited board. Clearly defines the impact resistance of the wall in different connection as interior walls and exterior walls through observing the wall’s changes in the number of 5 times or even up to 50 times impact (10 times of the national standard). It can be known from the experiment that long wall has large vibration but good integrity. The window wall may fracture easily and is not able to meet the minimum standard requirements of impact resistance when the width is small. It needs to take reinforce measures.

Middle Holocene environmental reconstruction and climatic inferences through multi-proxy records from Seymareh lake sediments (Zagros Mts., Iran)

2021 ◽  
Author(s):  
Michele Delchiaro ◽  
Giulia Iacobucci ◽  
Francesco Troiani ◽  
Marta Della Seta ◽  
Paolo Ballato ◽  
...  
Keyword(s):  
Sedimentation Rate ◽  
Water Discharge ◽  
Sediment Supply ◽  
Grain Size Analysis ◽  
Size Analysis ◽  
The Holocene ◽  
Middle Holocene ◽  
Lake System ◽  
Proxy Records ◽  
The Impact

&lt;p&gt;The Seymareh landslide is the largest rock slope failure (44&amp;#8201;Gm&lt;sup&gt;3&lt;/sup&gt;) ever recorded on the exposed Earth surface. It detached &amp;#8764;10&amp;#8201;ka BP from the northeastern flank of the Kabir-Kuh anticline (Zagros Mts., Iran) originating the natural dam responsible for the formation of a three-lake system (Seymareh, Jaidar, and Balmak lakes, with an area of 259, 46, and 5 km&lt;sup&gt;2&lt;/sup&gt;, respectively). The lake system persisted for &amp;#8764;3000 yr during the Holocene before its emptying phase due to overflow. A sedimentation rate of 21&amp;#8201;mm&amp;#8201;yr&lt;sup&gt;&amp;#8722;1&lt;/sup&gt; was estimated for the Seymareh lacustrine deposits, which increased during the early stage of lake emptying because of enhanced sediment yield from the lake tributaries.&amp;#160;&lt;/p&gt;&lt;p&gt;To reconstruct the climatic and environmental impact on the lake infilling, we reviewed the geomorphology of the basins and combined the results with multi-proxy records from a 30 m thick lacustrine sequence in Seymareh Lake. Major analyses comprise grain size analysis, carbon and oxygen stable isotopes of carbonate-bearing sediments, and X-ray diffraction analysis of clay minerals.&lt;/p&gt;&lt;p&gt;Lake overflowing is largely accepted as the main response to variations in water discharge and sediment supply since the alternation from dry to wet phases enhances sediment mobilization along hillslopes decreasing the accommodation space in the downstream sedimentary basins. In this regard, during the early-middle Holocene, the Seymareh area, as well as the entire Middle East, was affected by short-term climate changes at the millennial-scale, as testified by both paleoecological and archaeological evidence. Indeed, several records from Iranian lakes (i.e., Mirabad, Zeribar, Urmia) well documented the temperature and the moisture conditions of the western Zagros Mountains during the Holocene. During the early Holocene, the precipitation remained low up to 6 ka BP, reaching the driest condition around 8-8.2 ka BP. The impact of this abrupt climate change is evident across West Asia, where the first large villages with domesticated cereals and sheeps disappeared, converting to small hamlets and starting habitat-tracking. As regards the Seymareh area, a more irregular distribution of rainfalls and their increasing seasonality may support rhexistasy conditions, during which the scarce vegetation cover enhances both the hillslope erosion and sedimentation rate in the basins, most likely contributing to the overflow of Seymareh Lake.&amp;#160;&lt;/p&gt;

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