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Application of the bolt-rope support technology at the roadway intersection of Jinfeng Gold Mine

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  • Changchun Gold Research Institute Co.,Ltd.|China Gold Group Guizhou Co.,Ltd.|Changchun Gold Research Institute Co.,Ltd.|Changchun Gold Research Institute Co.,Ltd.|Guizhou Jinfeng Mining Co.,Ltd.
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Abstract:

The rocks in Jinfeng Gold Mine are fragmented on the whole and joints and fissures develop.When the rocks are mined by mechanized upward approach cementation filling mining method,the problems occur including excessive roadway engineering,large section area and large exposed area of roadway intersection.In light of the support problems of cracking,collapsing and caving which often occur on the roof and corners at large-sized engineered structures like roadway intersections,the paper proposes bolt-rope support technology,effectively enhancing support strength and solving the problem of destabilized rock mass at the roadway intersection due to excavation.The rock mass after the support has been long without cracking and deformation,keeping stability,and the safe and efficient production is ensured.The research bears guiding significance for bolt-rope support at roadway intersections of mines with similar rock conditions.

Keywords:

fragmented rock mass;mechanized;big section;roadway intersection;deformation and destruction;bolt-rope support