Abstract:

Shield tunneling has become one of the dominant tunnel construction methods for modern urban Metro works and sewage works. The waterproofing of the shielddriven tunnels is very important and complicated. Due to various construction factors, the water seepage/leakage of shielddriven tunnels is much serious and has a rising tendency in recent years. The water seepage/leakage of some shielddriven Metro tunnels in some cities is so serious that the operation of the trains is impacted. Based on the field experience in shielddriven tunnel construction, the author introduces the waterproofing of shielddriven tunnels.