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PENGARUH ALIRAN REMBESAN DAN KEMIRINGAN LERENG TERHADAP PRILAKU KEGAGALAN LERENG Nofrizal Nofrizal; Amelia Sulastri; Febi Silvia Deni
Ensiklopedia of Journal Vol 3, No 1 (2020): Vol 3 No 1 Edisi 1 Oktober 2020
Publisher : Lembaga Penelitian dan Penerbitan Hasil Penelitian Ensiklopedia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (312.766 KB) | DOI: 10.33559/eoj.v2i5.558

Abstract

The effect of water flow or seepage into the soil will affect the stability of the slope. For this reason, it is necessary to study the slope collapse with variations in the slope. The 3-dimensional spring model is made in the form of a frame with a size of 100 cm long x 70 cm high x 7 cm wide. The slope model is made from sand with a slope of 30o, 40o and 60o. The soil shear strength test is also carried out on samples of soil that has collapsed with different water content. In general, the shear strength of the soil has decreased due to water seepage. Slope failure with a slope of less than 40o only occurs at the foot of the slope, while slopes with a slope greater than or equal to 40o experience collapse along the slope height to the top of the slope.
ANALISIS PENGARUH KARAKTERISTIK CURAH HUJAN TERHADAP KERUNTUHAN LERENG DENGAN MENGGUNAKAN APLIKASI GEO SLOPE (Studi Kasus : Jalan Simalaka (Sicincin-Malalak-Balingka) Nofrizal Nofrizal; Amelia Yulastri; Febi Silvia Deni
Ensiklopedia of Journal Vol 3, No 2 (2021): Vol 3 No 2 Edisi 1 Januari 2021
Publisher : Lembaga Penelitian dan Penerbitan Hasil Penelitian Ensiklopedia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (639.488 KB) | DOI: 10.33559/eoj.v3i2.610

Abstract

Avalanches are a frequent event on a slope. One of the important factors that causes landslides in addition to the load that is on the slopes is the infiltration of rainwater. In the rainfall data in malalak road area also has the intensity of rain with heavy rainfall conditions. Not closing is likely to be a avalanche. This research was conducted to analyze the amount of safety figures on Malalak Road. This study is classified into applied research. Kajian will use soil parameter data and rainfall data,, as compare the safe factors obtained using fellenius medote and Geo-studio V Software, due to disturbed soil stability or slope building rocks. Analysis of the use of the Geo-Studio program and using the Fellenius method showed the safety factor value of the slopes in the Malalak area was0.80. Therefore the result itu means the slopesin kalert are inunstable condition because it has a safety factoran < 1,5 . The analysis of calculations from research conducted on malalak road section KM 28 shows that the value of safety factors obtained is still said to be labil, where the value of FK is less than 1.5 can be concluded that the infiltration of rain and slope slope is very influential to the stability of the slope. Dimana safety factor or FK (Safety Factor) slope decreases along with the length of rainwater infiltration that occurs in malalak area.