Abstract:

Yangtze River crossing tunnel in Wuhan, China is the first highway tunnel in China that has been constructed by shield method. The critical control points of the works are determined on basis of analysis on the critical and fundamental items of the works. The construction technology for tunnels constructed by slurry shields under particular ground conditions and high ground water pressures and the countermeasures for specific conditions are summarized on basis of the engineering practice of shield launching, shield boring in different ground conditions and shield arriving. Therefore, valuable experience is accumulated for the construction of slurry shields in the paper.