Repository Universitas Negeri PadangAnalisis Kestabilan Lereng Jalan Tambang di Area Zona 4 PT. Bintang Sumatera Pasifik di Koto Alam Kabupaten 50 KotoAhmat TorkisZudriauthorPerusahaan belum melakukan perencanaan geoteknik mengenai kestabilan lereng di area penambangan.Perencanaan geometri lereng nantinya akan digunakan metode Bishop Simplified dan Janbu Simplified. Data awal Clay: Unit Wight (γ) = 19,67 kN/m3, Cohesion (c') = 30,1 kN/m2 dan sudut geser dalam (ϕ') = 38,06°. Tinggi lereng awal 11 meter serta sudut overall lereng 59°. Geometri lereng rekomendasi: 1. Metode Bishop Simplifiedkondisi jenuh FK 0,996 lereng tidak aman, pengurangan sudut lereng dari 59° menjadi 46° ketinggian11 meter, FK 1,339 lereng aman. 2. Metode Janbu Simplified kondisi jenuh FK 0,955 lereng tidak aman, sudut lereng dari 59° menjadi 44° dengan ketinggian 11 meter, maka FK 1,34 lereng dalam kondisi amanTN Mining engineering. Metallurgy2019-10Universitas Negeri Padang;Teknik Pertambangan FT UNPThesis

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