The creation of any mine excavation disturbs the virgin state of stress in the Earth's crust. This results in stress concentrations that interfere with the stability of the rock mass surrounding the excavation. It is essential to modify the internal behaviour of the rock mass surrounding excavations in order to reinforce the ground and stabilize excavations. Resin-grouted rockbolts are extensively used for this purpose. Esterhuizen (2014) stated that when effectively installed, the rockbolt exerts a clamping force and a bonding strength that keeps the rock mass together. This increases the cohesive strength of all discontinuities in the rock mass and enhances the stability of the excavation. Poorly designed and installed ground support is ineffective and constitutes a safety hazard. It is therefore crucial for every mine to ensure that any form of ground support is designed and installed correctly. This research evaluates the installation of resign-grouted rockbolts and identifies challenges and solutions for improved safety as observed at an operating hard rock mine. The support design used at the mine was reviewed and the design parameters optimized. The outcomes will enhance the efficiency of support and minimize the costs associated with the installation of resingrouted rockbolts.The studied mine is situated in the Bushveld Complex of South Africa. It comprises two zones-a shallow more ductile zone and a deeper less ductile zone which is more stable. At full production, a combination of conventional breast mining, room and pillar, and area-specific mining methods will be used to extract the orebody.Inspection of loose, exposed rockbolts during the support audits indicated that around 250 mm of the bolts had not been covered with resin. Furthermore, a review of the monthly record of the number of resingrouted rockbolts installed at the mine indicated that a significant proportion of the bolts are installed incorrectly. The numbers of resin-grouted rockbolts installed at the mine in the last quarter of 2015 are presented in Table I.Installation of resin-grouted rockbolts in hard rock mining:challenges and solutions for improved safety by T.G. Maepa, and T. ZvarivadzaPaper written on project work carried out in partial fulfilment of BSC Honours (Mining Engineering) degreeThe creation of mine excavations alters the stress distribution in the surrounding rock mass. In modern mining, resin-grouted rockbolts are used as a means of support in order to redistribute stresses and reestablish equilibrium in the rock mass. The success of resin-grouted rockbolting depends on the design of the system and the correct installation of the support units.The support design and rockbolt installation procedure at a platinum mine in the Bushveld Complex were investigated. A number of issues that resulted in poor installation were identified, including resin admixture, incorrect length and orientation of support holes, over-or under-spinning of the resin, and incorrect rockbolt tensioning. The support design used at the mine was re...
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