Analysis Stability Of Slope in Pit B Miyor Pratama Coal Accompany, Kumanis Atas Village, Talawi Regency, Sawahlunto, West Sumatera | Zendy

Refky Adi Nata | Zendy; Alexander Alexander | Zendy

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Analysis Stability Of Slope in Pit B Miyor Pratama Coal Accompany, Kumanis Atas Village, Talawi Regency, Sawahlunto, West Sumatera

Author(s) -

Refky Adi Nata,

Alexander Alexander

Publication year - 2019

Publication title -

promine

Language(s) - English

Resource type - Journals

eISSN - 2620-7737

pISSN - 2354-7316

DOI - 10.33019/promine.v7i1.1056

Subject(s) - cohesion (chemistry) , rock mass classification , geotechnical engineering , safety factor , coal , friction angle , factor of safety , slope stability analysis , slope stability , mining engineering , geology , mathematics , engineering , physics , waste management , quantum mechanics

The purpose of this research is a classification of rock from slopes and analyzes safety factor of slope by fellenius and janbu method. This type of research classified as descriptive. For class of rock mass based on bieniawski 1989 and for processing helped with software slide v. 6.0. Research results explain the total weights of Rock Mass Rating (RMR) from the results of the data from field, the total weights is = 46 so the rocks are at class III (moderate), with cohesion value 250 kPa and the friction angle is 30 o . The value of the slope safety factor pit B PT. Miyor Pratama Coal after using the slide programme V. 6.0 with method of Bishop has Safety factor = 2,093, and with Janbu method has safety factor = 2,180. From two methods include safe condition > 1.

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