Thin-ore-body shallow hole shrinkage method without sill pillar
A shallow-hole ore retention method and a technology without bottom pillars is applied in the field of mine mining technology, which can solve the problems of investing a lot of manpower, material resources and time, and achieve the effects of improving the recovery rate, reducing labor intensity and simple process.
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[0035] The specific embodiments of the present invention will be described below in conjunction with the drawings.
[0036] Including mining engineering, cutting engineering, mining engineering and mining engineering, it is characterized in that it includes the following steps:
[0037] The said standard mining project:
[0038] Such as image 3 , Figure 4 , Figure 5 , At the lower level, at the lower level of a mine building. After the phase transportation roadway is completed, the forklift is digging into the ore body every 5-8m to the mine roadway 2-18, and at the same time from the phase transportation roadway 2-1 to the left and right sides of the mine The column 2-8 is tunneled into the connecting road 2-19 of the courtyard. After being tunneled into the ore body, the courtyard 2-9 is drilled upwards, in the vertical direction of the courtyard 2-9, every 4-6m, towards the courtyard 2-9. Dig from left and right to the connecting road 2-10 entering the stope, and the connect...
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