Main features of the mining method in the staged rock drilling stage
Expanded Metal Mesh,Expanding Metal,Expanded Wire Mesh,Expanded Steel Mesh glorybest industry co.,ltd , https://www.glorybestfilter.com
January 20 07:08:30, 2024
For the ore-stabilized deposits, if the ore body is below horizontal and moderately inclined, the house-column method can be used, and the ore body below the steep-sloping medium-thickness can be recovered by the retention method. For the ore body inclined to steeply inclined and medium thickness, the stage mining method of section rock drilling can be adopted, which is characterized by dividing the mining room, the mining column, the first mining room and the rear mining column in the mining unit; The stage is divided into several sections, and the middle and deep holes are used in each section of the roadway; the open empty field formed after the mining is finished is processed simultaneously with the returning of the mining column.