Abstract:

Based on penet rate into study and practice, the paper systematically analyzed and summarized the application of horizontal sub-level mining method and perpendicular sub-streak mining method in the mining of gentle dip thin ore-body on the principles of safety, high benefit, low cost, low loss rate. and low poverty rate. According to compare proof by arranged mining and incise engineering, mining ground produced capability, consumed material, the target of loss rate and poverty rate, we draw the conclusion that perpendicular sub-streak mining have a series of advantage, such as smaller the worker labor intensity, high safe coefficient, bigger the mining ground capability, higher mining efficiency, smaller the mining and incise engineering amount, very remarkable economic benefit, lower the loss rate and poverty rate etc. Thereby, it is verified that the method is a efficacious mining with obvious superiority for the gentle dip thin ore-body in the stable wall rocks.

Key words: gentle dip thin ore-body, perpendicular sub-streak, horizontal sub-level, upward incise, barricade