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Application of upward horizontal approach filling mining method in Songxian Gold Mine

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  • Songxian Shandong Gold Mining Industry Co.,Ltd.|Songxian Shandong Gold Mining Industry Co.,Ltd.|Songxian Shandong Gold Mining Industry Co.,Ltd.|Songxian Shandong Gold Mining Industry Co.,Ltd.|Songxian Shandong Gold Mining Industry Co.,Ltd.
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Abstract:

The main orebody of Songxian Gold Mine occurs in structural alteration zone.The previously used short-hole shrinkage mining method has poor safety and high mining loss and dilution.In light of those problems,in order for the safety of stope operation,stable ore rock ground pressure,lower mining loss and dilution,and to ensure stope production capacity,the study proposes upward horizontal approach filling mining method and in detail describes the mining preparation and extraction process.Field application shows that upward horizontal approach filling mining method has low mining loss and dilution with the mining loss rate only 8 % and ore dilution rate 12 %.The operation safety is greatly improved compared to the previous one.The comprehensive production capacity reaches 130 t/d.The technical and economic index can meet production requirement.The total revenue of the mine is improved.The method is a safe,viable and economically effective.

Keywords:

structural alteration zone;upward approach;filling mining method;stope ground pressure;mining loss rate;ore dilution rate