Pengaruh Hujan Pada Stabilitas Lereng Di Jalan Tol Gempol – Pandaan

Atikah, Dewi; Juwono, Pitojo Tri; Hendrawan, Andre Primantyo

doi:10.21776/ub.jtp.2017.008.01.08

Cited by 5 publications

(6 citation statements)

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“…The method used to calculate the seepage is a 2D finite element at steady-state conditions. The Finite Element Method (FEM) is used because it is more reliable than the limit equilibrium method [10][11][12][13].…”

Section: Methodsmentioning

confidence: 99%

Seepage Modeling in Embankment Dams With Various Sub Soil Characteristics

Iswanto

Wardoyo²,

Satrya³

2022

Journal of Civil Engineering

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The earthfill dam might be built for all subsoils condition, however the common problems are the seepage flow and dam stability. This study uses numerical simulation model for seepage discharge and slope stability analysis. The characteristic of the dam is obtained from Tugu Dam, Trenggalek, while the subsoil data is varied for five soil types which are clay, silty clay, silt, silty sand, and sand. The first simulation analyze certain subsoil type during various water levels, while the second simulation analyze certain water level elevation during various soil types. Each simulation will be analyzed for seepage discharge and slope stability. The first simulation results show that seepage discharge and water level elevation have a logarithmic correlation with R 2 > 0.75. The largest seepage discharge at 1.90 x 10 -3 m 3 /s is sand soil, while the smallest is clay soil at 1.47 x 10 -9 m 3 /s. The results of the second simulation show that the seepage discharge and saturated volumetric water content also have a logarithmic correlation. Based on these two simulations, the seepage discharge still meets the requirement since plotted below the average annual runoff, which is 1% of the 10-year re-flood discharge. The amount of reflood discharge is calculated using the Nakayasu Synthetic Unit Hydrograph (SUH) which is 5.99 m 3 /s. The safety factor of slope stability is more than 1.2 which is considered as stable dam.

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Section: Methodsmentioning

confidence: 99%

Seepage Modeling in Embankment Dams With Various Sub Soil Characteristics

Iswanto

Wardoyo²,

Satrya³

2022

Journal of Civil Engineering

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“…The daily rainfall data obtained will first be converted into hourly rainfall data using the Mononobe formula (Atikah et al, 2017), as follows:…”

Section: Rain Instesitymentioning

confidence: 99%

Slope Stability Analysis for Landslide in Road Preservation Working Packages Ende - Wolowaru and Junction – Kelimutu Sta 10+475

Akbar,

Lastiasih,

Wahyudi

et al. 2024

Journal of Infrastructure &Amp; Facility Asset Management

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The National Road Construction Agency (BPJN) in East Nusa Tenggara Province through the Satuan Kerja IV (Satker) has repaired some landslide points in the Ende -Wolowaru and Junction -Kelimutu Road Preservation working package. One of the landslide points that need treatment is at STA. 10+475. Based on survey and planning results from the Satker P2JN BPJN NTT, the most dominant factors that trigger landslides are geological conditions and high rainfall. Data from soil investigations at the landslide location at STA 10+475 after the landslide occurred showed that the soil was dominated by sandy clay. However, in their planning report, rainfall data was not found, therefore, it is needed to see whether there is an influence of rainwater infiltration at the location for causing landslides. This research aims to determine the causes of landslides including whether there is an influence of rainwater infiltration at the research location and the simulation results with the SLOPE/W and SEEP/W porgrams are proven to be correct. After simulating with the SEEP/W program, the slope safety factor which was 1.586 before the landslide occurred dropped to 0.883.

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“…Tipe hujan normal adalah hujan yang intensitasnya kurang dari 20 mm hari -1 . Tipe hujan normal apabila berlangsung selama beberapa minggu hingga beberapa bulan dapat efektif memicu longsoran (Atikah et al, 2017). Intensitas hujan yang tinggi dapat memengaruhi kecepatan waktu terjadinya longsor.…”

Section: Sig (2-tailed)unclassified

Simulasi Pendugaan Longsor: Pengaruh Intensitas Hujan Pada Tanah Dengan Tekstur Dan Kandungan Bahan Organik Yang Berbeda

Rofiq

Utami

Agustina

2022

JTSL

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Natural factors and human actions can cause landslides. Natural factors include high rainfall intensity and mountainous areas or hills with steep slopes. Human actions that can cause landslides are land conversion and inappropriate land management. This study aimed to explore the effect of rain intensity on soils with different textures and organic matter content. The landslide simulation study was conducted at the Agro Techno Park and Experimental Field, Faculty of Agriculture, Brawijaya University. This study used an acrylic box (size 100 cm x 50 cm x 75 cm) and aluminium plate as a base, which was adjusted to a slope of 50. There were eight treatment combinations consisting of three factors: soil texture (silty and clayey), rainfall intensity (70 mm hour-1 and 120 mm hour-1 ), and organic matter application (without and with organic matter application). The variables measured were landslide duration and volume. The results showed that the duration and volume of landslide materials are largerly influenced by rainfall intensity. Adding organic matter to the soil at any rainfall intensity may decrease landslide duration and volume by half compared to without organic matter application. Among the three factors examined (soil texture, organic matter application and rainfall intensity), rainfall intensity seems to be the most determining factor in landslide duration and volume.

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Pengaruh Hujan Pada Stabilitas Lereng Di Jalan Tol Gempol – Pandaan

Cited by 5 publications

References 0 publications

Seepage Modeling in Embankment Dams With Various Sub Soil Characteristics

Seepage Modeling in Embankment Dams With Various Sub Soil Characteristics

Slope Stability Analysis for Landslide in Road Preservation Working Packages Ende - Wolowaru and Junction – Kelimutu Sta 10+475

Simulasi Pendugaan Longsor: Pengaruh Intensitas Hujan Pada Tanah Dengan Tekstur Dan Kandungan Bahan Organik Yang Berbeda

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