What technique is commonly used for ground control in underground mining?

In underground mining, ground control is essential to ensure the stability and safety of mine workings and to mitigate the risks associated with ground collapse or rock falls. The technique involving mesh and shotcrete applications for rock reinforcement is widely recognized as a critical method for ground control.

This method involves applying a thin layer of shotcrete—concrete that is sprayed onto surfaces—which can be reinforced with steel mesh to enhance the structural integrity of the rock masses. Shotcrete not only provides immediate support to unstable rock surfaces but also helps to bind loose material, creating a cohesive layer that helps to prevent rock failures. This is especially important in areas where fractures or deformations might compromise the mine's safety.

While other techniques, such as draining excess water and implementing ventilation systems, play significant roles in maintaining overall mine safety and operational efficiency, they do not directly address the reinforcement of ground stability in the same way that mesh and shotcrete do. The use of explosives for rock fragmentation, although vital in establishing access to ore bodies, does not contribute to ground stability and can actually create new hazards if not managed carefully.

Overall, the application of mesh and shotcrete is a direct and effective strategy for enhancing rock stability in underground mining environments, making it a key technique in ground control