2006•Opencast Mining TechnologyRequires access
Technology measures of lowing blasting boulder yield in Shuiyueyan surface limestone mine
Tan Hai-wen
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Abstract
The blasting boulder yield is an important quality indicators in the step long-hole blasting of surface mine.Based on the analysis of causes on which the blasting boulder occurs in borehole blasting of surface mine,the paper determined some measures of lowering boulder yield of borehole blasting operation in mining surface mine by borehole parameters,taking explosive specific charge,charge structure,millisecond interval and detonating into design of blasting program,the blasting with the controlling measures resulted in very satisfied effects in practice.