shi - ru structure null of adit for shi - rudomashin takeoff

摘要

PURPOSE: To prevent leakage of water between an embedded ring provided at the connection of an adit and a shield machine or a segment by securing a seal member to the inside of an embedded ring. ;CONSTITUTION: At least one seal member A, A is fixed to the inside of an embedded ring 4 provided at the connection of an adit extending from a vertical shaft. The seal member A is so designed that each rubber sheet 1, 1 made endless has one end secured to the inner surface of the embedded ring 4 and has the other end folded back to enclose a fixed part and then secured to the inner surface of the embedded ring 4 to form a closed space, into which a member crosslinked inside so as to have elasticity is packed. As the material packed into the closed space, a thermosetting urethane resin that has elasticity after setting, or an urethane foam resin, etc., is used.;COPYRIGHT: (C)1996,JPO