Waterproofing of Shield-driven Tunnels

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.