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All Journal Syntax Literate: Jurnal Ilmiah Indonesia
Satria, Trihanyndio Rendy
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Humanities Education Environmental Science Law, Crime, Criminology & Criminal Justice Social Sciences Other

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Metode Penanggulangan Masalah Kelongsoran Dinding Penahan Tanah Basement Pada Gedung Geodiversity Brin Karangsambung – Kabupaten Kebumen, Jawa Tengah Utomo, Puji Nur; Satria, Trihanyndio Rendy; Soemitro, Ria Asih Aryani
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36418/syntax-literate.v10i7.60974

Abstract

The development of the BRIN Geodiversity Area in Karangsambung experienced landslides on the Retaining Wall (DPT) in the form of secant piles with a diameter of 60 cm and a depth of 20 m. This study aims to analyze the causes of landslides and provide alternative repair solutions. The research method uses soil data analysis, back analysis of cracked soil conditions, and numerical modeling with Plaxis 2D software. The analysis results show that the cause of the landslide is the formation of cracked soil which results in increased pore water pressure and cohesive soil becoming behaving like sand (loss of cohesion value). This condition causes active soil pressure to increase significantly from normal conditions. Stability analysis shows that the existing secant pile requires a minimum depth of 29.68 m under cracked soil conditions, while the installed depth is only 13 m. Two alternative solutions are recommended: soldier pile with diameter 1 m and depth 45.58 m (SF=1.665) and soldier pile with diameter 0.8 m and depth 22 m reinforced with ground anchor (SF=1.643). Cost analysis shows that soldier pile with ground anchor is more efficient with material cost of Rp 1.36 billion compared to single soldier pile of Rp 3.49 billion. This research contributes to understanding the behavior of cracked soil on slope stability and practical recommendations for handling similar landslides.
Co-Authors Ria Asih Aryani Soemitro Utomo, Puji Nur