Sharply inclined coal seam mining method
A mining method and a technology of steep inclination, which are applied in the field of roof control by flexible cover supports in steeply inclined coal seams, can solve the problems of restricting single-level excavation, roadway support, difficult maintenance, and heavy outburst prevention workload, etc., and achieve reduction The effect of digging the number of cut holes, reducing the workload of preventing outbursts, and reducing the loss of coal resources
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[0028] Example 1
[0029] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown, the mining method of steeply inclined coal seams consists of the following steps:
[0030] Step 1. Open return airway 2 in the steeply inclined coal seam 1 by blasting, and open the conveyor lane 3 at the rock layer 4 of the steeply inclined coal seam 1 under the return airway 2. The distance between the conveyor lane 3 and the steeply inclined coal seam 1 is 3~4m.
[0031] Step 2: Firstly, excavate the first cut hole 12 with pseudo-inclined arrangement in the steeply inclined coal seam 1 above the conveyor lane 3, and the upper end of the first cut hole 12 is connected with the air return lane 2. The first cut hole 12 The lower end is connected to the conveyor lane 3 through the connecting inclined lane 7, and the distance between the adjacent connecting inclined lanes 7 is 80-100m. Then place the flexible shield support 5 on the first cut-off eye 12 to control the roof to form a pseudo-inclin...
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