Proceedings of the 3rd International Conference on Science in Engineering and Technology (ICOSIET 2024)

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Excavation Method and Support System Recommendation of Diversion Tunnel at Jatinegara Dam, Tegal District, Central Java

Authors
Raditya Apriliana1, 2, I Gde Budi Indrawan1, *, I Wayan Warmada1
1Department of Geological Engineering, Faculty of Engineering, Universitas Gadjah Mada, Sleman, Special Region of Yogyakarta, Indonesia
2Ministry of Public Works, South Jakarta City, Special Capital Region of Jakarta, Indonesia
*Corresponding author. Email: igbindrawan@ugm.ac.id
Corresponding Author
I Gde Budi Indrawan
Available Online 7 July 2025.
DOI
10.2991/978-94-6463-768-7_6How to use a DOI?
Keywords
Diversion Tunnel; Rock Mass Rating; Excavation Method; Support System
Abstract

The purpose of the Jatinegara Dam is to irrigate agricultural land in the villages of Cacaban dan Rambut. The Jatinegara Dam uses tunnel construction as its diversion tunnel. The objective of this research is to provide recommendations for the tunnel excavation method and support system, as well as to predict the tunnel stand-up time based on an empirical method derived from Rock Mass Rating (RMR). The research method comprises an analysis of geological mapping and an analysis of the rock cores along the tunnel. Engineering geological mapping was carried out with the aim of validating the Rock Mass Rating parameters that had been determined through the evaluation of rock cores. The results show that the diversion tunnel consists of volcanic breccia, sandstone intercalated with siltstone, and interbedded sandstone and siltstone. The RMR value ranges from 32-49 (poor to fair rock masses). For poor to fair rock masses, the suggested excavation methods are heading and bench. Bolts, shotcrete, and steel sets are required for the tunnel’s support systems. Poor rock mass is expected to have stand-up time in 10-50 hours, while fair rock has stand-up time in 80 hours.

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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Volume Title
Proceedings of the 3rd International Conference on Science in Engineering and Technology (ICOSIET 2024)
Series
Advances in Engineering Research
Publication Date
7 July 2025
ISBN
978-94-6463-768-7
ISSN
2352-5401
DOI
10.2991/978-94-6463-768-7_6How to use a DOI?
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.

Cite this article

risenwbib
TY  - CONF
AU  - Raditya Apriliana
AU  - I Gde Budi Indrawan
AU  - I Wayan Warmada
PY  - 2025
DA  - 2025/07/07
TI  - Excavation Method and Support System Recommendation of Diversion Tunnel at Jatinegara Dam, Tegal District, Central Java
BT  - Proceedings of the 3rd International Conference on Science in Engineering and Technology (ICOSIET 2024)
PB  - Atlantis Press
SP  - 43
EP  - 52
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-768-7_6
DO  - 10.2991/978-94-6463-768-7_6
ID  - Apriliana2025
ER  -