Analysis of Tunnel Stability: Effect of Tunnel Shape on the Tunnel Deformation of Riam Kiwa Dam

DOI

10.2991/978-94-6463-768-7_26How to use a DOI?

Keywords

Diversion Tunnel; Finite Element; Tunnel Shape

Abstract

The diversion tunnel for the Riam Kiwa dam has a D-shaped design. Structural stability analysis is crucial for ensuring the safety of tunnel construction. The purpose of this study is to look into what happens to the Riam Kiwa Dam’s diversion tunnel when the shape of the tunnel changes, including how it was set up in the first place. This study examines circular and D-shaped tunnels subjected to dead load, maintaining uniform parameters such as soil/rock characteristics, dimensions, and reinforcement systems. The necessary data include surface geological measurements, core drilling observations, and tunnel geometry data. We acquired the data sources through field observations, laboratory analyses, and BWS Kalimantan III Banjarmasin. For computations in this study, the finite element approach, facilitated by Phase2 software, was used. The geological characteristics at the research location are predominantly rock, hence the numerical analysis will employ the Generalized Hoek-Brown failure criterion. The analytical findings will provide a comparison of tunnel geometries that present the most favorable deformation values for tunnel building. The research findings demonstrate that the deformation in circular tunnels is merely 39.1% of the deformation observed in D-shaped tunnels. Therefore, we can deduce that circular tunnels demonstrate greater stability compared to D-shaped tunnels. The tunnel’s shape can substantially influence the extent of deformation.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Madania Madania
AU  - Hendy Setiawan
AU  - Gayatri Indah Marliyani
PY  - 2025
DA  - 2025/07/07
TI  - Analysis of Tunnel Stability: Effect of Tunnel Shape on the Tunnel Deformation of Riam Kiwa Dam
BT  - Proceedings of the 3rd International Conference on Science in Engineering and Technology (ICOSIET 2024)
PB  - Atlantis Press
SP  - 235
EP  - 242
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-768-7_26
DO  - 10.2991/978-94-6463-768-7_26
ID  - Madania2025
ER  -