| 摘要 |
<p>The present invention provides an improved method for repairing in-ground tunnel structures (6). The method involves applying a first curable resin over a cementitious liner (18) which lines the interior wall surfaces (14) of the tunnel (6), drilling drainage holes (30) in the cementitious liner (18), and filling the drainage holes (30) with a second curable resin. The resins are allowed to cure and harden. The cured resins seal the wall surfaces (20) and drainage holes (30) to provide a composite tunnel structure (6) having high mechanical strength and resistance to fluid leaks.</p> |
