Engineering Practice of Passing Through Collapse Columns in Working Face Based on Goaf Retaining Technology
When exposing geological structures such as collapse columns during mining operations,it often brings many potential hazards,such as conducting aquifers,causing gas exceeding limits,and forming support difficulties.In response to the technical difficulties in exposing the affected area of large collapse columns in the 6102 working face,the mining party has successfully implemented the engineering practice of passing through collapse columns based on the theory and experience of goaf retaining roadway in combination with the mature goaf retaining roadway theory and experience of the mine,based on the occurrence and potential hazards of collapse columns.At the cost of protecting coal pillars to a certain extent,the mining party has ensured the safe and rapid skipping of the affected area of collapse columns in the working face,and the advantages of goaf retaining roadway technology have been verified.
workface over collapse columnleaving lanes along the goaffill the wallsurrounding rock support in the mining area
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