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General risks for tunnelling projects: an overview

Lee, Yong Siang and Mohamed Ghazali, Farid Ezanee and Zainun, Noor Yasmin and Ali, Roslinda (2017) General risks for tunnelling projects: an overview. In: Proceedings of the International Conference of Global Network for Innovative Technology and AWAM International Conference in Civil Engineering.


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Tunnels are indispensable when installing new infrastructure as well as when enhancing the quality of existing urban living due to their unique characteristics and potential applications. Over the past few decades, there has been a significant increase in the building of tunnels, world-wide. Tunnelling projects are complex endeavors, and risk assessment for tunnelling projects is likewise a complex process. Risk events are often interrelated. Occurrence of a technical risk usually carries cost and schedule consequences. Schedule risks typically impact cost escalation and project overhead. One must carefully consider the likelihood of a risk’s occurrence and its impact in the context of a specific set of project conditions and circumstances. A project’s goals, organization, and environment impacts in the context of a specific set of project conditions and circumstances. Some projects are primarily schedule driven; other projects are primarily cost or quality driven. Whether a specific risk event is perceived fundamentally as a cost risk or a schedule risk is governed by the project-specific context. Many researchers have pointed out the significance of recognition and control of the complexity, and risks of tunnelling projects. Although all general information on a project such as estimated duration, estimated cost, and stakeholders can be obtained, it is still quite difficult to accurately understand, predict and control the overall situation and development trends of the project, leading to the risks of tunnelling projects. This paper reviews all the key risks for tunnelling projects from several case studies that have been carried out by other researchers. These risks have been identified and reviewed in this paper. As a result, the current risk management plan in tunnelling projects can be enhanced by including all these reviewed risks as key information.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA800-820 Tunneling. Tunnels
Depositing User: Pelajar Praktikal UiTM
Date Deposited: 13 Aug 2018 03:28
Last Modified: 13 Aug 2018 03:28
URI: http://eprints.uthm.edu.my/id/eprint/10093
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