Open AccessRisk Analysis of Slope Stability Open Mine With Probability Method PT. Timah (Persero) TBK Batubesi Area, Damar, East Belitung
Author(s) -
Teguh Samudera Paramesywara,
Budhi Setiawan
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1363/1/012046
Subject(s) - open pit mining , drill , stability (learning theory) , mining engineering , tin , slope stability , slope stability analysis , safety factor , environmental science , mathematics , geotechnical engineering , geology , soil science , engineering , computer science , chemistry , mechanical engineering , machine learning , organic chemistry
The stability of mining slopes, especially on tin minerals, has different criteria than other minerals. The safety factor that becomes the reference value of the stable slope of the mine can also reflect the movement of the land (Lubis, 2012 in Wijayanti, 2015). In processing these FK values often do not take into account that all parameters have equal oppurtunity to represent those parameters (Azizi, 2012). The probability method is a way of anlyzing the risk of mining slopes by including several parameters including wet density, dry density, cohesi and friction angle. The research aims to get FK and PK values that are stable and efficient to be mined because the smaller than the slope is opened, the smaller the tin mineral recovery and the higher the stability of the slope and vice versa. To get the value of FK and PK need to do slope analysis with limit equilibrium method and probability method then modeled with Slide V.6.0 software and calculation with Excel program. Data processing is from 4 drill points found that GT_01 with value FK > 1,3 indicating that the slope safe and movement of soil can occur and get value PK 0,5 – 0,6 %. For GT_02, GT_03 and GT_04 obtained unsafe slope results so optimization is necessary.