Abstract: Accidents occur frequently and can cause great harm during a course of urban underground space exploitation and development. In order to effectively reduce accident occurrences and losses, we identified the main risk factors in project planning and site selection, hydrogeological exploration, engineering design, construction, and late operation and maintenance during the whole life-cycle of the project, and analyzed the potential accidents. We demonstrated the common relationships among the risk factors in the aforementioned areas, established a safety evaluation index system, proposed a comprehensive multi-factor/multi-method safety evaluation model, and carried out feasibility verification through specific examples. On this basis, we developed a “whole life-cycle, whole-system and whole-organization” orientated risk prevention and control technology and management system. We provided in this paper the reasonable ideas and methods for ensuring successful implementation of urban underground space projects.

Key words: underground space, whole life-cycle, risk factor, comprehensive evaluation, prevention and control system