Types and Characteristics of Safety Accidents Induced by Metro Construction

摘要

Due to the special geological conditions and the surrounding environmental conditions, the urban metro constructions are faced with greater technical difficulty and higher safety risk, which cause many kinds of safety accidents. Taking Beijing metro as the background, the characteristics of the metro project and the main safety risks have been analyzed, and a statistical analysis of accident cases caused by Beijing metro construction has also been made. According to the inducements, the accidents will be divided into 5 categories: accidents caused by pipeline leakage or rupture, bad geology-induced accidents, overmuch deformation of strata-induced accidents, management defects and unexpected accidents, of which management defects are the biggest contributor, and the most serious accidents are caused by pipeline leakage or rupture and bad geology. At last, combined with typical cases, the characteristics and dangers of accidents caused by pipeline rupture and unfavorable geology are analyzed. In addition, countermeasures to prevent and control accidents are proposed.