Analysis slope stability based on physical properties in Cepoko Village, Indonesia

Abstract

Semarang is one of the industrial cities that continues to experience developments that eventually force peri-urban areas such as Gunungpati District to be converted into residential areas. Cepoko is one of the subdistricts in Gunungpati District that has developed into a subservice center along with the development of settlements in this district. The fact that Cepoko is in a sloping area and many landslides that have occurred make the risk of landslides become the reason for the importance of slope stability analysis. Grouting is a soil strengthening method to increase soil particle bonding so that it can be a solution for landslide prevention in sloping areas. The purpose of this study is analyzing the slope stability and simulating the grouting method. This study takes secondary data such as core drilling data, geoelectric data, and laboratory test data (index properties test, direct shear test, and uniaxial compressive test) obtained from Selimut Bumi Adhi Cipta Inc. The slope stability analysis is one of the methods to interpret field subsurface structure using index properties test, direct shear test, and uniaxial compressive test by software of rocscience slide 6.0. After interpreting field subsurface structure then grouting simulation applied into software to compare initial slope stability and after applying grouting. The results of the slope stability analysis showed that the initial slope had a safety factor of 0.847, Agus Setyawan

A Study on the Geo-Environmental and Social Impacts of Koottickal and Kokkayar Landslides

“…Mathematical and numerical models have been developed to identify and assess areas susceptible to rainfall-induced landslides (Liu et al 2006;Ceccatelli et al 2017). Various factors, including rainfall, melting snow, temperature changes, tremors and vibrations on earth, volcanic activity, and anthropoid activity, can affect the stability of slopes (Geertsema et al 2009;Høeg 2013;Setyawan et al 2021; Komadja et al 2021). Geotechnical and numerical studies have been conducted on landslides, and it is evident that unanticipated settlements and unplanned hill cutting at the crest and toe of the hill are responsible for most casualties.…”

A case study of the improvement of an old building’s shallow foundation resting on sandy clay soil using cement slurry grouting technique

“…Compaction grouting is a ground improvement technique that involves injecting low mobility grout into the ground to densify the soil mass, however, throughout liturature review, the compaction grouting has been mainly utilized to lift structures since this grouting technique could induces heaving effects, resulting in threatening the stability of the structural elements of the existing building. Slurry grouting, also known as cement grouting, is a technique that includes injecting neat cement grout in varied amounts into soil or rock to improve the in-situ material's characteristics such as cohesion value [6]. The slurry grouting is widely recognized as one of the most common grouting techniques due to their low cost, diverse raw material sources, and compatibility with the environment [7].…”

“…5. Schematic diagrams for numerical analysisAcorrding to[6] the minimum value of undrained strength of grout should be no less than 42 0 for a better stability of reinforced ground, thus, the value of 42 0 was taken into consideration during finite element analysis. Typical values of stiffness parameters, such as E and poisson's ratio , of grout column were 30 MN/m 2 , and 0.25, respectively.…”