Studi pengaruh variasi jumlah dan tinggi benching terhadap stabilitas lereng dengan perkuatan geotekstil menggunakan geostudio

Abstract

Failure of slope constructions might cause substantial consequences for the environment and the surrounding communities. Therefore, accurate analysis is required to identify factors that affect slope stability. Terracing is suitable for hilly areas with limited access, while geotextiles function to reinforce soil and reduce the risk of slope failure. Geotextiles have advantages in terms of workability and economic aspects. The aim of this study is to analyze the influence of terracing variations and the use of geotextiles on slope stability, as well as to compare the results of slope geometry design analysis using numerical calculations with the GeoStudio program. The research result shows that the increase in the safety factor (SF) due to the addition in the number of terraces from 2 terraces to 3 is 13.95%; from 3 terraces to 4 is 11.26%; from 4 terraces to 5 is 10.12%. The increase in SF value due to the use of geotextiles on a slope with 2, 3, 4, and 5 terraces are 77.29%, 56.12%, 41.37%, and 32.17%, respectively. The increase in SF value due to the addition in the number of terraces and the use of geotextiles from 2 terraces to 3 is 0.34%; from 3 terraces to 4 is 0.74%; and from 4 terraces to 5 is 2.95%