Bulletin of Geology
Vol 6 No 2 (2022): Bulletin of Geology Special Issue: International Seminar on Earth Sciences and Te

The Evaluation of Prefabricated Vertical Drain as the increasing of Consolidation Process in Residual Soil of Talanggulo Sanitary Landfill, Jambi

Muhammad Zelandi (Institut Teknologi Bandung)



Article Info

Publish Date
15 Jul 2022

Abstract

The consolidation process in the residual soil layer that has not yet reached primary consolidation equilibrium (pore pressure 1 kN/m2) could increase its potential to have land subsidence. It is necessary to deal its problem with hustling the consolidation process of the soil layer, so the soil consolidation equilibrium states can be achieved, and the soil will withstand the load from the overburden on it. The sanitary landfill in Talanggulo, Jambi, resides on residual soil with a lithological condition dominated by clay, which the consolidation process occurs longer. Thus, it needs to accelerate the settlement of the soil that can be used as the base for landfill. The method used in this study are analytical method and the finite element method, which is looking at vertical settlement of the soil and decreased of pore water pressure (PWP) in sanitary landfill conditions without PVD, and with PVD at the spacing of 1.5 m, 2 m and 3 m, at the residual soil layer. Based on the measurement results when the disposal thickness at 15 m, it is observed that in landfill conditions without PVD, the vertical change that occurs is 1.75 m, while in landfill conditions with PVD 3 m spacing noted as 2.02 m, and at landfills with PVD 2 m spacing it occurs the vertical change of 2.12 m. Meanwhile the PWP process. the velocity of landfills with PVD to reaches the minimum pore pressure faster than landfills without PVD, with PVD 2 m spacing has the greater effect than PVD with 3 m spacing. It can be identify the PVD usage in Talanggulo sanitary landfill could be effective to accelerate the settlement process.

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Journal Info

Abbrev

buletin-geologi

Publisher

Subject

Earth & Planetary Sciences Energy Engineering

Description

Bulletin of Geology is a research-based periodical scientific open access journal published by Faculty of Earth Sciences and Technology, Institut Teknologi Bandung (ITB). The published article in Bulletin of Geology covers all geoscience and technology fields including Geology, Geophysics, Geodesy, ...