IMPROVED BOLT ANCHORAGE DEVICE FOR PROVIDING GROUND SUPPORR IN MINES TUNNELS ROCK SLOPES AND OTHER CIVIL CONSTRUCTION WORKS

摘要

An improved bolt anchorage device for providing ground support in mines, tunnels, rock slopes and other civil construction works wherein soft strata conditions are encountered, as in coal miens roof and the like structure which comprises, a bolt adopted to be pushed in a hole of desired size drilled in the structure, and a resin capsule containing resinous bond material adapted to hold the bolt by resin bond on the capsule being broken and tensioned against the structure using a bearing plate and a nut.