(1)     Wooden rock bolt. There are two kins of wooden rock bolt used in China, namely ordinary wood rock bolt and compressed wood rock bolt.

(2)     Steel or wire rope mortar rock bolt. Cement mortar as binder for anchor and surrounding rock.

(3)     Inverted wedge metal anchor. This bolt was once one of the most widely used forms of bolts. Because it is easy to process, easy to install, and has a certain anchoring force, this kind of anchor is still in use within a certain range.

(4)     Friction bolt. It is a full length friction anchored rock bolt. The bolt has the characteristics of simple installation, reliable anchoring, large initial anchoring force and long-term anchoring force inceraseing with the movement of surrounding rock.

(5)     Resin rock bolt. Resin as a binder for rock bolt, higher cost.

(6)     Fast hard expansion cemnet anchor. It is made of ordinary Portland cement or slag Portland cement with admixture, which has the characteristics of quick setting, early strength, water reduction and expansion.

(7)     Double fast cement anchor. It is made up of a mixture of finished early strength cement and double fast cement in a certain proportion. Fast and hard, fast and strong.

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