A Comprehensive Literature Review on Geotechnical Stabilization Techniques for Soft Soil in Swampy Areas of South Kalimantan.

Abstrak

Abstract

South Kalimantan is a province in Indonesia with unique geographical characteristics dominated by extensive swamplands. According to data from the Central Statistics Agency (2023), the area of ​​swampland in South Kalimantan reaches approximately 2.5 million hectares or approximately 66% of the total area of ​​the province. This condition also presents its own challenges in planning and implementation of construction. Kalimantan has peat characteristics that are prone to land subsidence and have very low bearing capacity, indicating that the NSPT and sondir values ​​on the ground surface are relatively small, with an average value of 5. This study analyzes geotechnical engineering techniques in swamplands in South Kalimantan through a systematic literature review of 22 selected publications from various databases. Qualitative analysis focused on soil improvement techniques, soil stabilization, and improvement methods. The results of the analysis indicate that preloading technology with Prefabricated Vertical Drain (PVD) and Vacuum Preloading can reduce land subsidence and accelerate consolidation. The geotechnical characteristics of swamplands show high complexity. The preloading method with PVD proved to be the most effective (67% adoption), capable of reducing settlement by 60% and accelerating consolidation by 4.2 times. Based on the literature review obtained regarding geotechnical engineering techniques, the analysis results show that suitable improvements to swampy soil are using Preloading Vertical Drain (PVD) and vacuum preloading to accelerate soil consolidation.

Keywords: Swamp Land, Soil Improvement, Prefabricated Vertical Drain (PVD).