GASKETED WATERTIGHT SEGMENTED TUNNEL LININGS

摘要

A segmented primary tunnel lining is provided having longitudinal and circumferential bolted joints in which an elastic gasket is placed between corresponding jointed flanges of the circumferential joints and between the corresponding jointed end plates of the longitudinal joints. The flanges and end plates are deformed by high strength bolts to exhibit metal-to-metal contact in the area of the bolts for joint stiffness. The gaskets are positioned to the outside of the bolts for prevention of leaks.