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Selection and application of technical schemes for raise construction in underground mines

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  • Yunnan Gold Mining Group Co.,Ltd.|Yunnan Gold Mining Group Co.,Ltd.|BGRIMM Technology Group
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Abstract:

According to the occurrence conditions of the ore body in Baoshan Jinchanghe Lead-Zinc Mine,the technical scheme of raise construction is selected.The applicability of general drilling and blasting method,shaft sinking in single time blasting,shaft sinking by VCR method and raise drilling rig method is analyzed.Based on the com-bination of qualitative and quantitative evaluation methods,each shaft sinking method is evaluated,and the comprehensive score is obtained according to economic comparison,quality comparison,progress comparison and safety comparison,finally the optimal scheme is determined.The main ore pass,ore passes in mining districts and stopes adopt shaft sinking by raise drilling rig method,the stope cutting shaft is blasted by VCR method,and the air return shaft is blasted by general drilling and blasting.According to the use of different vertical shafts,different shaft sinking techniques are flexibly adopted,so that the engineering application effect is relatively good.

Keywords:

raise;shaft sinking in single time;general drilling and blasting method;shaft sinking by VCR method;raise drilling rig