Multilayer gently-inclined extremely-narrow vein stoping blasting technology
An extremely thin ore and gently inclined technology, applied in blasting, ground mining, earth square drilling and mining, etc., can solve the problems of reducing ore dilution rate and surrounding rock mixing, and achieve the effect of reducing dilution rate and avoiding mixing
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[0022] In order to further describe the present invention, a multi-layer gently inclined extremely thin vein recovery blasting technology of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0023] Depend on figure 1 It can be seen from the blast hole layout schematic diagram of a kind of multi-layer gently inclined extremely thin vein mining blasting technology shown in the present invention that the present invention adopts top-to-bottom mining, layer-by-layer detonation from top to bottom, and each layer blasting Hole arrangements and charge forms vary.
[0024] In the present invention, a cutting roadway 4 is excavated next to the mined multi-layered veins as a compensation space when the ore body is mined. The cutting roadway 4 excavates the first layered veins 1, the rock interlayer 2, and the second layered veins 3 all at once.
[0025] Next, excavate intensive blastholes 5 at the boundary between the first...
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