Abstract:

Wansongling Tunnel is a newlybuilt bidirectional fourroadway highway tunnel, which connects Xihu scenic resort and the south area. The tunnel crosses underneath an existing highway in scenic resort and the naval ranking rest home. The tunnel has such features as shallow overburden, large span, high ground water level, busy traffics of the existing highway and strict restrictions on the settlement of the ground surface and road surface. By means of improving the construction method and strengthening the monitoring and measurement, the settlement of the ground surface is effectively controlled and the operation safety of the highway is guaranteed. This paper introduces the construction method and the monitoring and measurement technologies of the tunnel.

Key words: large span tunnel highway in scenic resort, construction method monitoring and measurement