Abstract: Potential for collapse, both small and large, are inevitable in urban metro construction. However, the consequence of metro collapse in urban areas could be far greater than the consequence of tunnel collapse in remote areas and might have a significant adverse effect of on urban residents. Therefore, fast and effective remediation after an accident should focus on resuming the traffic and ensuring the safety of the adjacent structures and facilities. If the collapse resulted from water leakage, the water removal measures should be the first priority over other remediation measures. Fill materials over the collapsed zone should be lightweight and high strength. Overall monitoring and survey measures should be accurate and on time so that the feedback from the site can be provided to facilitate the decision make process.

Key words: Metro Construction, Collapse Hazard, Remediation Alternates, Monitoring and Survey