| 摘要 |
<p>1. A joint sealing ring between a shield skirt (1) and a tubbing extension (2), - with an elastic inner seal (7) processable against the outer surface of the tubbing extension (2), characterized in that the joint sealing ring is flexibly braced relatively to the shield skirt (1) and tubbing extension (2) and freely movable in the direction of advance by adjustable support assemblies and is provided on one hand with injection material supply openings (5) and on the other hand with an elastic outer seal (6) consisting of a radially-adjustable rubber or plastics ring that can be applied to the inner surface of the shield skirt (1).</p> |
