PEMODELAN TIGA DIMENSI DAERAH RAWAN LONGSOR DALAM MEMBANTU PERENCANAAN DINDING PENAHAN TANAH

Abstract

Natural disaster-prone areas are areas that are included in the list of areas where disasters often occur, such as volcanic eruptions, landslides, floods, and tsunami waves that can cause general environmental damage. To anticipate disasters that can occur at any time, alertness is needed in efforts to detect earthquakes, preserve protected areas, and carry out disaster management activities from an early age. One of the areas that are prone to disasters, especially landslides in Jember Regency, is Kemuning Lor Village, Arjasa Subdistrict. By using contour mapping technology and 3-dimensional modeling, the resulting map is more communicative and facilitates infrastructure planning. Based on the results of the study, it is known that the slope of the land exceeds 60 degrees and the elevation value between the top and bottom surfaces is between 20 to 30 meters which has the potential to be prone to landslides in the local soil structure. Long - cross section modeling and 3 (three) dimensional visualization can give priority to critical land in the design of retaining walls.