建龙铁矿露天转地下过渡期联合开采方案研究

Study on the Combined Mining Scheme for the Period of Transition from Opencasting to Underground Mining at Jianlong Iron Mine

建龙铁矿正处于露天开采、地下一期斜井开采、边角矿平硐开采 ,以及地下二期工程建设共同存在的过渡时期。根据矿山开采现状和稳产过渡要求 ,提出了 5种过渡期联合开采方案。经过技术经济分析比较 ,推荐建龙铁矿采用露天扩圈开采、不改造斜井、主副井分期建设、先期副井提升 2 1

Jianlong Iron Mine is now in a transition period when opencasting,inclined shaft mining,adit cut mining for edge of ore No.1 underground phase and the construction of No.2 underground phase coexist.According to the mining actualities and the requirement of stable transition of production of the mine,five alternatives of combined mining for the transition period were made.Through technical and econimical comparision and analysis,it is recommended that the scheme be used which includes enlarged opencasting,non transformation of the inclined shaft,separate construction of the main and the auxiliary shafts and the lifting of 210m level's ore by the early built auxiliary shaft.