| 摘要 |
<p>The rock anchor is a solid- (3) or bored for injection-,profiled rod (3'), glued locally, or over its full length, to the rock (35); with an end tensioner (9), having a socket for a pressurising pump. Over part of the external length of the rod (3,3'), a casing (12) is applied, enabling sliding. Over a section (13) of the length, the casing (12) is of hardening, foaming or compound-filled plastic. This tightly encases the rod surface (15), in an externally (17) smooth, even coating.</p> |
