Managing structure related risks for highway tunnelling project in malaysia a contingency plan for menora tunnel
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Date
2018-06
Authors
Nur Aini Kamaruzaman
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Abstract
Nowadays, tunnel is widely constructed and being utilised as an infrastructure
due of their potential applications and their unique characteristics. Generally, tunnelling
and underground structure works are usually easy to be exposed to possible risks
especially in terms of the tunnel structure itself. These kinds of infrastructure have
numerous tunnel related risks that need to be identified in order to improve the operation
and maintenance for tunnelling project according to their potential risks. Therefore, the
aim of this study is to identify the potential tunnel structure related risks and their
priority-importance ranking towards successful delivery of highway tunnelling projects
in term of operation and maintenance. The tunnel structure related risks for this research
has been gathered from pilot study based on case study. Furthermore, an extensive
interviews were conducted with a number of key personnel who involved in operation
and maintenance stage for selected case study project in Menora Tunnel including OPUS
and PLUS in order to obtain further information and justification for the identified risk.
Thus, the results of these interview were used to determine their risk ranking through
Analytical Hierarchy Process (AHP) analysis. Based on the results gathered from AHP
analysis, the top three (3) listed risk on top can be categorized as predominant risk factors
which are tunnel structure failure, contingency maintenance works due to tunnel risk,
and cost overrun in operation due to tunnel risk. Thus, by identifying potential risk and
be ranked accordingly to its prioritize, it will eventually facilitate the operator and
authorities that in charge further revise the operation procedure and maintenance plan by
including all this information. As a result, the current risk management plan in tunnelling
projects can enhance the operation and maintenance of tunnelling projects in present and
future by tackling unforeseen tunnel structure related risks.