ABSTRACT
Strainburst is the most frequently encountered rockburst in underground mines. Conventional method to support strainburst-prone grounds is to install rock reinforcement system using rebar and mesh first and then install yielding support system using dynamic rockbolts at a later stage. This two-stage rock support installation process is not safe and effective because it can adversely impact worker’s safety and mine production schedule. Two new dynamic rockbolts, which are called Superbolts, are developed for rapid rock support in burst-prone grounds. Laboratory testing confirmed that the new rockbolts have superb capacities to achieve the goal of reinforcing and holding rock masses at the same time. Detailed test results of the MCB-Superbolts are presented in this paper. The new rockbolts are quick to install and can be used in a one-pass rock support system to facilitate safe and rapid drift development in underground mines.
