THE DEWATERING EFFECT TO MINING (LOW WALL) SLOPE STABILITY IMPROVEMENT AT BLOKS 18 AND 21 PIT ASAMASAM MINE PT ARUTMIN INDONESIA, SOUTH KALIMANTAN

• Main Author: ALLISHA (NIM : 12113088), FIDKYA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/27315
• Institution: Institut Teknologi Bandung

Blocks 18 and 21 in Pit 4 Asamasam mine of PT Arutmin Indonesia, South <br /> <br /> Kalimantan, have a weak material that can affect the stability of the low wall. It is <br /> <br /> therefore a necessary to continuously evaluate the stability of the low wall. <br /> <br /> PT Arutmin Indonesia Site Asamasam had done one of preventive action through <br /> <br /> dewatering as an alternative to reduce the driving force on the mining slope (low <br /> <br /> wall) at Blocks 18 and 21. The significance of dewatering action was then tested <br /> <br /> by doing a slope modeling with GeoStudio SLOPE/W GEO-STUDIO International <br /> <br /> Ltd. software with limit-equilibrium slicing method type Morgenstern-Price. <br /> <br /> Groundwater elevation was being measured by Piezometer. <br /> <br /> The slope modelling revealed that lowering the groundwater level can improve the <br /> <br /> stability of the low wall. A higher improvement is expected at Block 21 in <br /> <br /> comparison to Block 18. <br />