LAND ARRANGEMENT PLANNING ON RECLAMATION LAND OF PT. MEGA MULTI ENERGY, NORTH BARITO, CENTRAL KALIMANTAN

PERENCANAAN PENATAAN LAHAN PADA LAHAN REKLAMASI PT. MEGA MULTI ENERGI, BARITO UTARA, KALIMANTAN TENGAH

Abstract

PT. Mega Multi Energi (PT MME) operates in the coal mining industry which causes land changes, so planning for land reclamation is carried out. This research aims to determine the slope, landform management, and reclamation planning. Results of slope stability analysis to design single slope and overall slope dimensions. A detailed topographic survey has been carried out by PT. MME uses LiDAR mapping with a total work area of ± 5000 Ha. This technology uses the latest advanced LiDAR or Light Detection and Ranging sensor which is designed for activities in the form of topographic surveys and 3-dimensional imaging, operated by plotting millions of laser beam points on objects at one time and then modeling them in the form of a 3-dimensional point cloud. The rocks that make up the slopes in the mining area of PT. MME is dominated by claystone and sandstone. An individual slope design with a height of 10 meters and a slope of 60° shows a safety factor (FK) value of > 1.5. Landform regulation is intended to reduce the speed of runoff, erosion sedimentation, and landslides, the shape and design of the slope must be gentle. Implementation of the reclamation plan starts with land preparation, erosion and sedimentation control, topsoil management, and revegetation.