Abstract: The traditional mining methods for extraction of the slightly inclined, multi-layers deposits, such as overall mining, bottom-chuting with medium-length holes and ore overthrowing mining by blasting, have low productivities, high labor intensity and costs, and/or poor safety. A new mining method——continuous mixing mining applied underground ore-waste separating, was put forward for this kind of deposit. An application of it was made to Da Malu deposit in Songshujiao Tin Mine of Yunnan Tin Corporation according to the mining conditions there. By the method, the ore and rock all together are first blasted, then separated underground. The mining process can be conducted continuously. The method is a new mining technique possessing high efficiency, low material consume and high safety for the mining of this kind of deposit.
A new mining technology for slightly inclined multi-layer ore bodies
Abstract:
The traditional mining methods for extraction of the slightly inclined, multi-layers deposits, such as overall mining, bottom-chuting with medium-length holes and ore overthrowing mining by blasting, have low productivities, high labor intensity and costs, and/or poor safety. A new mining method--continuous mixing mining applied underground ore-waste separating, was put forward for this kind of deposit. An application of it was made to Da Malu deposit in Songshujiao Tin Mine of Yunnan Tin Corporation according to the mining conditions there. By the method, the ore and rock all together are first blasted, then separated underground. The mining process can be conducted continuously. The method is a new mining technique possessing high efficiency, low material consume and high safety for the mining of this kind of deposit.