Proceedings of the International Conference on Sustainable Engineering, Infrastructure and Development, ICO-SEID 2022, 23-24 November 2022, Jakarta, Indonesia

Research Article

Geotechnical Design of Diversion Tunnel Using 2 Dimension Models

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  • @INPROCEEDINGS{10.4108/eai.23-11-2022.2341600,
        author={Nurul Habibah Lubis and Wirman  Hidayat},
        title={Geotechnical Design of Diversion Tunnel Using 2 Dimension Models},
        proceedings={Proceedings of the International Conference on Sustainable Engineering, Infrastructure and Development, ICO-SEID 2022, 23-24 November 2022, Jakarta, Indonesia},
        publisher={EAI},
        proceedings_a={ICO-SEID},
        year={2023},
        month={12},
        keywords={diversion tunnel rock mass strength deformation stability numerical modelling},
        doi={10.4108/eai.23-11-2022.2341600}
    }
    
  • Nurul Habibah Lubis
    Wirman Hidayat
    Year: 2023
    Geotechnical Design of Diversion Tunnel Using 2 Dimension Models
    ICO-SEID
    EAI
    DOI: 10.4108/eai.23-11-2022.2341600
Nurul Habibah Lubis1,*, Wirman Hidayat1
  • 1: Civil Engineering Department, Universitas Pertamina
*Contact email: Nhabibahlubis@gmail.com

Abstract

Diversion Tunnel plays the important roles to divert flowing water around a construction site. It is required design and analysis of stability and deformation that meets the criteria so that the tunnel can be constructed and operate safely. Sta-bility and deformation analysis was carried out based rock mass strength using Mohr Coulomb and Hoek Brown criteria model. The analysis was conducted using analytical calculations and finite element method software in 2 dimensions (2D) to obtain the required geometry and supports. The results of 2D analysis were compared to analyze the effect ge-ometry modeling. Analysis was also based on several cross sections in the tunnel to investigate design variations for each geotechnical condition according to site-specific environment. The study shows that the design method analytically and numerically fulfills the safety criteria, and the installation of support system indicate the significant reduction of tun-nel displacement