Analisis Penanganan Tanah Longsor pada Lereng dengan Metode Soil Nailing pada Proyek Jalur Lintas Selatan Lot 3 Blitar, Jawa Timur

Suhaimah, Sofi (2025) Analisis Penanganan Tanah Longsor pada Lereng dengan Metode Soil Nailing pada Proyek Jalur Lintas Selatan Lot 3 Blitar, Jawa Timur. Undergraduate thesis, UPN Veteran Jawa Timur.

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Abstract

In the construction project of the Jalur Lintas Selatan (JLS) Lot 3, segment Pantai Serang – Sumbersih, Blitar, a cut slope is found at STA 1+050 – 1+150 with a height of 25 meters. The slope consists of slightly clayey limestone with an SPT-N value of 60, which theoretically indicates a stable condition. However, a translational landslide occurred after heavy rainfall. Therefore, a slope stability analysis was conducted to determine the cause of the landslide and to design reinforcement using the soil nailing method. The stability analysis of the existing slope was performed using the Fellenius method and the Finite Element Method (FEM) with the aid of Plaxis 2D. The analysis included the effect of rising groundwater levels and the assumption of cracks that reduced the cohesion parameter. Subsequently, a reinforced slope analysis using the soil nailing method was conducted, employing both the wedge method and the Finite Element Method (FEM) with Plaxis 2D. The analysis results showed that the safety factor (SF) of the existing slope was 6.0 using the Fellenius method and 2.6 using FEM in Plaxis 2D. When the groundwater level was raised and cohesion was reduced due to cracking, the SF dropped to 0.9. The slope was then stabilized using soil nailing, resulting in a global safety factor of 1.6 (wedge method) and 1.5 (Plaxis 2D). The design of the soil nails included a length of 20 meters, inclination angle of 15°, diameter of 32 mm, and spacing of 1 meter.

Item Type:

Thesis (Undergraduate)

Contributors:

Contribution	Contributors	NIDN/NIDK	Email
UNSPECIFIED	Firmansyah, Yerry Kahaditu	NIDN0029018601	yerry.kahaditu.ts@upnjatim.ac.id
UNSPECIFIED	Farichah, Himatul	NIDN0726129301	himatul_farichah.ts@upnjatim.ac.id

Subjects:

T Technology > TA Engineering (General). Civil engineering (General)

Divisions:

Faculty of Engineering > Departement of Civil Engineering

Depositing User:

SOFI SUHAIMAH

Date Deposited:

15 Sep 2025 02:38

Last Modified:

15 Sep 2025 02:38

URI:

https://repository.upnjatim.ac.id/id/eprint/43445