A coal pillar reinforcement system for gob-side driving and its application method
A technology of coal pillars and fixed rings, which is applied in earthwork drilling, ground mining, mining equipment, etc., can solve problems such as crushing, difficulty in grouting, reduction of coal pillar stability and bearing capacity, etc., to improve integrity and improve Stability and bearing capacity, the effect of reducing roadway deformation
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[0039] The present invention proposes a gob-side roadway coal pillar reinforcement system and its application method. In order to make the advantages and technical solutions of the present invention clearer and clearer, the present invention will be described in detail below in conjunction with specific embodiments.
[0040] The present invention relates to a coal pillar reinforcement system for gob-side entry, which includes a coal pillar reinforcement anchor cable 4 , a grouting drill hole 7 , a grouting machine 5 , and a grouting monitoring device 6 . to combine figure 1 , figure 2 As shown, the arrangement of anchor cables for coal pillar reinforcement is as follows: three anchor cables 4 for reinforcement of coal pillars are drilled in the first row, two anchor cables 4 for reinforcement of coal pillars are drilled in the second row, and so on. 1.5m x 1.5m. The grouting borehole 7 is drilled between the coal pillar reinforcement anchor cable 4 boreholes, and the grouting...
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