Research on Grouting Reinforcement Technology for Underground Water Guiding Collapse Columns in Coal Mines
Based on the research background of the treatment of the X12 water conducting collapse column in the 60903 fully mechanized mining face of a certain mine in Shanxi,combined with drilling and geophysical data,it is proposed to use grouting reinforcement to seal the water conducting cracks of the collapse column,isolate the hydraulic connection between the bottom aquifer and the collapse column,and strengthen the strength of the coal seam floor,creating good conditions for the mining face to pass through the collapse column.Detailed design and application of grouting reinforcement layout plan for collapsed columns are conducted.After on-site application,there was no water inrush during or after passing through the X12 collapse column in the 60903 fully mechanized mining face.The coal seam floor remained stable and there were no problems such as mining equipment sinking,indicating that the grouting reinforcement technology used has achieved good application results.
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