Method for injecting retarder to coal body
A technology of chemical inhibitor and coal body, which is used in earth-moving drilling, safety devices, mining equipment, etc., can solve the problem that the inhibitor is not successful enough to prevent fire, the inhibitor cannot evenly wet and wrap the coal body, and the inhibitor cannot completely Play the role of inhibition and other problems to achieve the effect of reducing concentration, prolonging the natural ignition period, and enhancing the effect of dust reduction
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[0044] The method of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0045] like figure 1 Shown, the inventive method comprises the following steps:
[0046] 1. Drill several boreholes 3 in parallel in the middle of the coal seam 2 of the top-coal caving working face 1 in the coal mine. The diameter of the boreholes 3 is 65-75mm. The depth is 90 meters. In order to facilitate the discharge of drilling cuttings, the borehole 3 has an elevation angle of 1 to 2°; in order to prevent the coal walls at both ends of the fully mechanized caving face 1, the two ends of the working face 1 and the adjacent nearest borehole 3 The distance 5 is not less than 10m.
[0047] 2. Use an emulsion pump to inject inhibitor solution into each coal seam borehole 3;
[0048] The amount of inhibitor solution injected into each borehole 3 is determined according to the following formula:
[0049] Q=L·B·M·γ·ΔW·K (1)
[0050]...
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