Caving Method

Caving method is the ore mining method of filling the goaf with forced or natural caving wall rock to manage the ground pressure with the advance of the work face, without regard to the stope room and ore pillar. Its basic feature is to cave wall rock, collapsing and releasing ore under overlaying rock. It is applicable to the ore body where the wall rock is easy to collapse and the surface is allowed to collapse. The caving method can be divided into the longwall caving method, stratified caving method, sublevel caving mining method, and block caving mining method.

Both longwall caving method and stratified caving method adopt short hole mining, and the volume of caving ore is small per time. During ore extraction, the working space needs support, the mining process is complex, and the production capacity is low, but the ore loss and dilution are small. The longwall caving method is mainly used for mining flatly dip** layer-like thin ore body and is widely used in clay deposits. The...