Xiaotieshan Mine is a large and medium-sized mine containing many metals such as Cu,Pb,Zn,Au and Ag.The mining method of upward drift tailing sand consolidation and filling is adopted.In the process of mining transition,the ore amount in the last layer under the bottom pillar of the stage accounts for more than 30％of the ore amount in the stage,and it belongs to the difficult mining body.In the mining work,there are many problems such as difficult construction,high safety risk,depletion and loss rate.In order to solve the problem,according to the production experience of Xiaotieshan for many years and referring to the similar mines in China,put forward the proposed stoping scheme of small section under the stage bottom pillar.Practice has proved that this method is practical,feasible,and has obtained good economic benefits,and has certain reference significance for similar mines.
维普
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