ABSTRACT
With the rapid development of infrastructure construction, the number and scale of large tunnels and underground space projects are growing rapidly. But in our country in the tunnel that has been built and operated under construction, various diseases of tunnel occurred frequently and constituted a great safety hazard during the tunnel construction and operation period, so it is of great significance to carry out an in-depth investigation of the various diseases of tunnels. Among all kinds of lining diseases, lining cracking is the most common and the most harmful. Therefore, in this paper, a large number of lining cracks appearing on one side of the Dabuzi double-arch tunnel in Yunnan Province during the construction period and after the completion of the tunnel are taken as the research object, and the distribution characteristics of lining cracks and the causes of cracking are studied.
