DESIGN OF SHEET PILE AS AN ALTERNATIVE FOR HANDLING LANDSLIDE SLOPES ON JATI BARU ROAD, ASTAMBUL DISTRICT, BANJAR REGENCY

Abstract

Road conditions on the banks of river bends are certainly very potential to experience landslides or declines caused by changes in soil properties due to the influence of water flow velocity. Therefore, a retaining wall is needed to prevent landslides and subsidence, but in the case that is currently being reviewed the soil still experiences landslides and subsidence even though a retaining wall has been built. Therefore it is necessary to evaluate in this case to find the cause of landslides and subsidence.

Evaluations were carried out using sondir data and NSpt data, which of the data will be made a correlation to determine the type and parameters of the soil. Then the slope stability evaluation was carried out using the GEO-SLOPE 2018 software, calculating soil bearing capacity, soil settlement and analysis of existing retaining walls.

From the evaluation results, it was found that several aspects of the existing condition were stated to have safety numbers that did not meet the safe requirements. So that the cantilever sheet pile type retaining wall is made as an alternative handling. From the results of the stability analysis using Geoslope/W 2018 obtained a safety rate of 2,646 at low tide conditions and 4,234 at high tide conditions, so that the design of the cantilever sheet pile type retaining wall used in the design is safe against landslides.

Keywords: retaining wall, stability, landslide, subsidence