Abstract
In recent years, demand for utility tunnels in urban underground areas, which accommodate various lifelines such as electric power, communication, water supply, heating, gas, and so on, is increasing. However, unlike domestic manuals that are focused on utility tunnelmaintenance, disaster prevention measures implemented during the construction stage have been institutionalized overseas. In view of this, in order to secure safety related to the construction of utility tunnels in Korea, it is necessary to mitigate large-scale construction disasters that reflect the characteristics of underground urban utility tunnels. In this study, activity diagrams based on crisis warning phases of fire, inundation, and earthquake disasters were created to reduce the damage caused by each disaster. The activity diagrams are expected to contribute to the safety assurance in the event of a large-scale construction disaster during the construction of utility tunnels by effectively and promptly responding to each phase of the disaster.
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