Rock bolting practice and the geotechnical management system at Darlot Gold Mine

Ground support is critical for mine safety. A number of geotechnical factors should be considered in the determination of a ground support system. The ground support design must be adjusted to cope with different ground conditions. Due to limits of other rock bolt systems a resin bolt system has been adopted to improve the ground support at Darlot Gold Mine. Currently the Secura resin bolting system is being utilised as the primary ground support. This bolt system has a higher load transfer capability, is relatively simple to install and has a relatively low cost. Based on the geotechnical conditions the ground support regimes have been defined. The ground support requirements are determined based on geotechnical inputs such as a rock mass rating, purpose and life of excavation. Other geotechnical measures have also been taken to maintain a good ground support practice. These include continuous monitoring of the performance of rock bolting systems, strict quality assurance, promotion of a geotechnical-sensitive culture and training of all underground personnel.