Optimization of Mining Methods for Deep Orebody in a Gold Mine
The upward horizontal waste rock filling mining method originally is adopted for the 2#orebody of a gold mine,a large number of top and intercolumn are reserved in the mining process,resulting in a waste of resources.In order to improve the recovery rate of mineral resources,the upward horizontal point column unconsolidated filling method,the upward horizontal stratification combined filling method with approach consolidation and the pre-controlled roof sublevel subsequent filling method are proposed.The economic and technical indexes of different mining methods are compared,and the pre-controlled roof sublevel subsequent filling method is obviously superior to the other two schemes.In the practical applica-tion of the mine,the test stope can bring economic benefits of 28712700 yuan to the mine,and the value of additional resources recovered from the deep ore of the 2#orebody is up to 367 million yuan,which provides a reference for the mining of deep well deposits under similar conditions.
deep miningoptimization of mining methodspre-controlled roof sublevel subsequent filling method
NETL
NSTL
万方数据
