ANALISIS STABILITAS LERENG DENGAN MENGGUNAKAN DINDING PENAHAN TANAH (Studi Kasus : Proyek Perbaikan Lereng Di Sumbawa Barat - Nusa Tenggara Barat)

MUTHI AH, MUTHI AH (2024) ANALISIS STABILITAS LERENG DENGAN MENGGUNAKAN DINDING PENAHAN TANAH (Studi Kasus : Proyek Perbaikan Lereng Di Sumbawa Barat - Nusa Tenggara Barat). S1 thesis, Universitas Mercu Buana Jakarta.

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Abstract

A landslide occurred on the slope of a road in West Sumbawa, West Nusa Tenggara. This road is one of the roads leading to the site of a mining company and is also a provincial road. The mining company wants to make a new access road next to the discharge pipe located at the foot of the slope, so the dimensions of the slope must be changed. Therefore, the dimensions of the slope should be reinforced and the stability of the slope against landslides ascertained. One of the methods is by using the Fellenius method and Plaxis 2D Advanced 2024 application. The slopes were analyzed under existing conditions, during excavation, with Retaining Walls reinforcement, with DPT and Geotextile reinforcement, and with Retaining Walls plus Geotextile and anchor reinforcement. The changing dimensions of the slope will also require handling of the structure on the slope. The structure on the slope used is the retaining wall structure. The retaining wall must be analyzed based on its stability against shear, overturning, and bearing capacity. The results of the analysis with slope stability with the Plaxis 2D Advanced 2024 application show that the safety factor value of slope stability with retaining wall reinforcement has not yet reached a stable value of 1.252 ≤ 1.5. So that the addition of reinforcement with Geotextiles and Additional Anchors is carried out and a safety factor value of 1.521 is obtained. For the results of the analysis with the Fellenius method, the value of the slope safety factor in the retaining wall reinforcement condition has not reached a stable value, which is 1.387 ≤ 1.5. For the results of the stability analysis of the retaining wall against shifting, overturning and soil bearing capacity reached more than the stable limit. So that the retaining wall can be used. Thus, it can be concluded that the slope can be stabilized if it has been given reinforcement in the form of retaining walls and additional reinforcement in the form of geotextiles and anchors. Keywords : Slope, Slope Stability, Fellenius Method, Plaxis 2D, Retaining Walls Terjadi longsoran pada lereng suatu jalan di Sumbawa Barat, Nusa Tenggara Barat. Jalan ini merupakan salah satu jalan menuju lokasi perusahaan tambang dan juga merupakan jalan provinsi. Perusahaan tambang ingin membuat jalan akses baru di sebelah pipa pembuangan yang terletak di kaki lereng, sehingga dimensi lereng harus diubah. Oleh karena itu, dimensi lereng yang akan diubah harus diberi perkuatan terhadap lereng dan diketahui stabilitasnya terhadap longsoran. Salah satu metodenya dengan menggunakan metode Fellenius dan bantuan aplikasi Plaxis 2D Advanced 2024. Lereng dianalisis pada saat kondisi eksisting, saat penggalian, dengan perkuatan DPT, dengan perkuatan DPT dan Geotekstil, serta dengan perkuatan DPT ditambah Geotekstil dan Angkur. Dimensi lereng yang berubah juga akan membutuhkan penanganan pada struktur pada lereng. Struktur pada lereng yang digunakan ialah struktur Dinding Penahan Tanah. Dinding penahan tanah harus dianalisis berdasarkan kestabilannya terhadap geser, guling, dan daya dukungnya. Hasil analisis dengan stabilitas lereng dengan aplikasi Plaxis 2D Advanced 2024 menunjukan bahwa nilai faktor keamanan stabilitas lereng dengan perkuatan Dinding Penahan Tanah belum mencapai nilai stabil yaitu sebesar 1,252 ≤ 1,5. Sehingga dilakukan penambahan perkuatan dengan Geotekstil dan Angkur Tambahan dan didapatkan nilai faktor keamanan sebesar 1,521. Untuk hasil analisis dengan metode fellenius, didapatkan nilai faktor keamanan lereng pada kondisi perkuatan DPT belum mencapai nilai stabil, yaitu sebesar 1,387 ≤ 1,5. Untuk hasil analisis stabilitas dinding penahan tanah terhadap pergeseran, penggulingan dan daya dukung tanah mencapai lebih dari batas stabil. Sehingga dinding penahan tanah dapat digunakan. Dengan demikian, dapat disimpulkan bahwa lereng dapat stabil jika tela diberi perkuatan berupa dinding penahan tanah dan perkuatan tambahan berupa geotekstil dan angkur. Kata Kunci : Lereng, Stabilitas Lereng, Metode Fellenius, Plaxis 2D, Dinding Penahan Tanah

Item Type: Thesis (S1)
Call Number CD: FT/SIP. 24 127
NIM/NIDN Creators: 41120010015
Uncontrolled Keywords: Lereng, Stabilitas Lereng, Metode Fellenius, Plaxis 2D, Dinding Penahan Tanah
Subjects: 600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 624 Civil Engineering/Teknik Sipil
700 Arts/Seni, Seni Rupa, Kesenian > 720 Architecture/Arsitektur > 725 Public Structures Architecture/Arsitektur Struktur Umum > 725.9 Other Public Structures Architecture/Arsitektur Struktur Umum Lainnya > 725.96 Arches, Gateways, Wall/Lengkungan, Pintu Gerbang, Dinding
Divisions: Fakultas Teknik > Teknik Sipil
Depositing User: khalimah
Date Deposited: 21 Sep 2024 08:18
Last Modified: 21 Sep 2024 08:18
URI: http://repository.mercubuana.ac.id/id/eprint/91676

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