Sublevel caving collaborative mining method with flexible isolating course as artificial roof
A technology of segmented caving and mining methods, applied in surface mining, mining equipment, underground mining, etc., can solve the problems of poor effect of single-head ventilation tunnels and high rock mixing rate, and reduce the dilution rate and loss rate. amount of effect
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[0022] Example
[0023] refer to figure 1 , figure 2 and image 3 , this embodiment is aimed at mining a steeply inclined thick ore body with a stable ore body, including the following steps:
[0024] (1) Divide the steeply inclined and thick ore body into stages, and divide the ore blocks along the strike within the stage. The ore blocks are 60m long and 20m wide, and are layered according to 7-8m; the pillar method is used to mine the upper part of the ore blocks. The top space is laid, and flexible materials are laid on the bottom plate in the order of steel wire rope, metal mesh, polyester fiber, and then the covering is lowered to form a covering layer.
[0025] (2) The ventilation pedestrian patio 3 with the size of 2m×2m and the ore chute 2 with the size of 2m×2m are excavated upward from the stage 6 along the vein transport roadway 6, and the ore chute 2 with the size of 2m×2m is connected to the upper stage along the vein transport tunnel 1, and 3m×3m is excavated...
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