The brush seal for the tail of the shielded tunnelling machine and uses that the dead water manner

摘要

PURPOSE:To improve the water stopping property by pinching a bundle of elastic wire rods with an inner periphery side protective plate made of a fabric and an outer periphery side protective plate made of a steel plate, integrally molding them, and fitting it inside the tail section of a shield excavator in a ring shape. CONSTITUTION:A bundle 2 of elastic wire rods such as steel wires or synthetic fibers is pinched with an inner periphery side protective plate 3 and an outer periphery side protective plate 4 made of a steel plate, and they are integrally molded to form a brush 1. The inner periphery side protective plate 3 is made of a fabric, synthetic fibers or Aramid fibers are used for the material, abrasion is prevented by the segment entry, and bending deformation due to eccentricity is suppressed. The brush 1 is fitted on the inside of the tail section of a shield excavator in the ring shape, and grease mixed with inorganic or organic powder and an adhesive is filled between brush lines. The pump pressure feeding property of a filler material is improved, an initial water leakage is prevented by a small quantity used, and the abrasion and breakage of the protective plates 3, 4 can be prevented.