Which method is acceptable for installing high-voltage mine power cables along haulage ways?

Installing high-voltage mine power cables buried or covered is the safest and most appropriate method when running cables along haulage ways. This approach protects the cables from physical damage that could occur due to equipment, foot traffic, or environmental factors while also reducing the risk of accidental contact with the cables.

Buried or covered cables are less exposed to external elements and operational activities in the mine, which helps maintain safety standards and reduces the likelihood of electrical hazards. Additionally, covering cables can also minimize the risk of electrical discharge or interference, enhancing the overall safety of the mining environment.

The other methods, such as running cables above ground without protection or laying them out freely, do not provide adequate safety measures. These practices expose the cables to potential damage and hazards, which can lead to costly outages or dangers for miners. Thus, installing the cables buried or covered aligns with regulatory compliance and promotes safe mining operations.