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

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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Author Biography

Muhammad Zelandi, Institut Teknologi Bandung

Student, Master Program of Geological Engineering, Faculty of Earth Science and Technology, Institut Teknologi Bandung (ITB), Jl. Ganesha No.10, Bandung, West Java, Indonesia.

Published
2022-07-15
How to Cite
ZELANDI, Muhammad. The Evaluation of Prefabricated Vertical Drain as the increasing of Consolidation Process in Residual Soil of Talanggulo Sanitary Landfill, Jambi. Bulletin of Geology, [S.l.], v. 6, n. 2, p. 1010-1018, july 2022. ISSN 2580-0752. Available at: <https://buletingeologi.com/index.php/buletin-geologi/article/view/207>. Date accessed: 07 aug. 2022.