The characteristics of the upward stratified filling mining method are: dividing the ore into two steps of mining and mining, mining from the bottom to the top, and filling the goaf with fillings to support the goaf. Two gangs of surrounding rock and as a working platform for continued upward recovery. The filling method when returning to the mining room mainly includes hydraulic filling and cement filling.
The characteristics of the downward stratified filling mining method are: stratified mining from top to bottom and layer-by-layer cementing filling in the stage, generally adopting the approach type to carry out the mining operation under the protection of the upper layer artificial false roof. This filling mining method does not divide the mining room and the pillar, and the whole ore is recovered in one step.
The characteristics of the downward stratified filling mining method are: stratified mining from top to bottom and layer-by-layer cementing filling in the stage, generally adopting the approach type to carry out the mining operation under the protection of the upper layer artificial false roof. This filling mining method does not divide the mining room and the pillar, and the whole ore is recovered in one step.
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