Abstract:

Segment cracks are commonly seen during shield tunneling, which can influence the tunnel quality and even jeopardize the works acceptance and service life. In order to solve this common problem, the author analyzes the causes for the cracks and proposes some countermeasures. The results of the study have been used in the engineering practice and good effects have been achieved. The paper can provide reference for similar projects in the future.

Key words: shield  , tunnel  , segment  , crack  , smash  , countermeasure