Analisis Pengaruh Daya Dukung Tanah Terhadap Pemilihan Alat Mekanis Pada Penambangan Batubara Di Area Alam 8-9 PT Muara Alam Sejahtera

Abstract

ABSTRACT: This study aims to analyze the soil bearing capacity and its effect on the selection of mechanical equipment in coal mining at Area Alam 8-9 PT Muara Alam Sejahtera. The dynamic cone penetrometer (DCP) test was applied to obtain the california bearing ratio (CBR), which was then converted into soil bearing capacity. In addition, ground pressure (GP) analysis of the mechanical equipment was conducted. The results show that the average soil bearing capacity values for the three segments were 7,61 kg/cm² (pit road), 5,26 kg/cm² (disposal area), and 5,13 kg/cm² (original soil). The highest GP value was recorded for the heavy dump truck CMT 106 at 6,54 kg/cm². The comparison between DDT and GP indicates that the pit road segment was adequate to support all equipment, while the disposal and original soil segments are not recommended for HD CMT 106 and CMT 96 due to potential failure. This study highlights the need for road improvement in low bearing capacity areas to ensure safer and more efficient operations.

Keywords: soil bearing capacity, CBR, ground pressure, mechanical equipment, coal mining.