Vertical deep hole spherical drug pack mining stage mining method mining cutting method

Figure 1 VCR mining method diagram

1-rock drilling chamber; 2-mine body; 3-transport lane;

4-Ñ„165mm deep hole; 5-mining roadway; 6-pull space

In the lower part of the mine, the mine roadway, transportation roadway and chute are arranged. The bottom structure is determined according to the mining equipment. There is a flat bottom of the bottom column and a scraper leaving the bottom of the column; there is a funnel eruption structure with a bottom column. The height of the bottom space is generally 2 to 3 m.

A rock drilling chamber is arranged on the upper part of the ore block. The length and width of the rock drilling chamber are determined according to the shape of the ore body, the allowable exposed area, and the arrangement of the ore block. If the shape of the ore body is relatively regular and the ore stability is good, the rock chamber can be drilled along the full width of the mine and the parallel blastholes can be arranged. Conversely, 2 to 3 rock drilling roadways parallel to each other are drilled, and temporary pillars are left between the roadways. . The width of the roadway depends on the working width of the rig and the blasthole mesh. The height of the rock drilling chamber should be 0.5 to 1 m higher than the drilling frame of the drilling rig used.