Analisis Stabilitas Lereng Menggunakan Model Numerik 3 Dimensi Studi Kasus Lereng Sekolah Terpadu di Kecamatan Jonggol Bogor

D. Pratiwi, Nirpan Lesmana, Indra Noer Hamdhan
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引用次数: 1

Abstract

Slope is the surface of the earth that forms an inclination angle, that it has the potential for landslides. Landslide will be occurred by several factors, such as steep slopes, large loads, high rain intensity, poor drainage systems, high ground water levels and others. Therefore, slope stability analysis is needed to ensured that the slopes are safe from landslides potential which injured many people. As for the prevention and handling of landslides that can be done, such as changing the geometry of the slopes, improving the drainage system, providing slope reinforcement such as gabions, retaining walls, poles and others. This study aims to determine the effect of water level on the stability of the existing slope and which has been reinforced by bored piles using a 3-dimensional numerical model. The case study reviewed is the slope in the Integrated School in Bendungan Village, Jonggol District, Bogor Regency. The results of the analysis show that in the existing conditions with a normal water level, the value of the safety factor (SF) is 1.16, and when the water level is critical, the SF value is 1.14. Whereas in slope conditions with the reinforcement of the bored pile, the analysis results show that the SF value with normal water level is 2.33 and when the water level is critical is 1.58. The results of the analysis with the reinforcement of the drill pile show that the SF value is more than 1.5 so that the slope is safe from landslide based on SNI 8460 of 2017.
坡稳定性分析采用三维数值模型整合学校山坡研究
斜坡是地球表面形成倾斜角度的地方,它有发生滑坡的可能。滑坡的发生有多种因素,如陡坡、大荷载、暴雨强度大、排水系统差、地下水位高等。因此,需要对边坡进行稳定性分析,以确保边坡不受潜在滑坡的影响。至于预防及处理山泥倾泻,可采取的措施包括改变斜坡的几何形状、改善排水系统、架设石笼、挡土墙、撑杆等加固斜坡。本研究旨在利用三维数值模型确定水位对钻孔灌注桩加固既有边坡稳定性的影响。所审查的案例研究是茂物县Jonggol区Bendungan村综合学校的斜坡。分析结果表明,在现有正常水位条件下,安全系数(SF)为1.16,水位达到临界时,安全系数(SF)为1.14。而在钻孔灌注桩加固的边坡条件下,分析结果表明,正常水位时SF值为2.33,临界水位时SF值为1.58。钻孔桩加固后的分析结果表明,基于2017年SNI 8460的SF值大于1.5,边坡是安全的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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