are at the top arch of the tunnel, and invert the slope at the side wall, a mean of deep foundation supporting , such as the installation of the side wall. This kind of anchor and shotcrete work together to form a ring bearer arch, soil nail wall, micro piles, rock anchors, generating carrying capacity.

It is suitable for fault, weathered rock, backfill layer, with stone and other hard sediment pore complex formation. In slope, deep excavation, tunnel support systems and advanced high ground stress, large deformation of roadway deformation control and other projects with excellent results, with its easy construction, repair of whirl, whirl speed project is the preferred anchoring material.

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