2008•Mining Safety & Environmental ProtectionRequires access

Numerical Simulation of Weakening of Hard Top Coal by Pre-splitting Blast

Bi Zhu

Abstract

The caving of hard top coal of 4-2# coal seam in Tongchuan Jiaoping Coal Mining Area seriously impacts the production efficiency of the mine.Based on the analysis of the blasting factors,this paper analyzed the effect of different hole spacing upon the hard top coal by pre-splitting blast and thus obtained reasonable blasting.

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Key concepts: Rock blasting, Coal, Coal mining, Mining engineering, Hard coal, Engineering, Computer simulation, Geotechnical engineering