The electrical codes for mining in Canada (CSA M421) and in the USA (MSHA) both require the use of high-resistance grounding. High-resistance grounding is also becoming widely applied outside of.. Ground support is widely implemented to mitigate dynamic rock failures in underground mines. This paper investigated the ground support requirements in burst-prone mines to mitigate the catastrophic dynamic rock failures of rock and/or coal bursts. First, the ground support principles and considerations in burst-prone conditions are identified. The objective of a ground support system is to.
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Rock blasting is one of the most common and cost-efficient rock excavation techniques in mining and civil engineering projects 3,4.Rock blasting is a prominent mining technique for metal and non.. Heat stress is a major concern for the health, safety and productivity of miners working in hot and humid underground mines. At greater depth, heat inside underground mines increases due to geothermal gradient, heat released from high-capacity machinery, exposed rock surface, auto-compression of air, human metabolism, etc. Prolonged physical work in thermal environments severely affects the.
