Characteristics of Tunnel Explosion Accident and Its Emergency Disposal Process

Abstract

In this paper, recent typical tunnel explosive accidents in China, such as Bamianshan tunnel explosion accident, No. 5 Futuyu tunnel explosion accident, Yanhou tunnel explosion accident, Qidaoliang tunnel explosion accident and so on, have been collected and reviewed. Particular attention has been paid to these direct and indirect causes of explosive accidents, accident tunnel structure, accident process and loss, and subsequent emergency disposal measures. Based on details and information about these accidents, characteristic of various types of explosive accidents, including non-large tunnel explosion accident and large tunnel explosion accident in tunnel has been analyzed and their basic reason has been proposed. It shows that the leakage of mashgas and improper loading of explosives during construction, inflammable and explosive chemicals and materials transportation, vehicle crash and tire spontaneous combustion during operation could cause of explosion accidents in tunnel, while the combination among these causes could finally lead to a series of explosions, large-scale burning, a large number of casualties and massive economic losses. And emergency disposal process for these explosive accidents has been also summarized here. All of these aim to provide reference for the prevention of explosive accidents in tunnel and the formulation of emergency disposal plans in future, which could finally improve the operational safety of the highway tunnel.