Abstract:

The paper gives a detailed analysis on the causes for the cracks of the concrete linings of a railway tunnel located in Northwest of China and presents the critical aspects and results of the repairing of the cracks by means of automatic lowpressure grouting of modified epoxy resin, which provides a new construction method for the repairing of the cracks of the tunnel linings in the future.

Key words: crack of concrete lining  , cause analysis  , automatic lowpressure grouting technology  , crack repairing