Water Hazard Prevention and Control Technology and Safety Evaluation in Coal Mine Working Face
In order to reduce the water damage threat to the bottom limestone of coal mine working faces and achieve safe mining.This article focuses on the 5 abnormal areas discovered by geophysical exploration and drilling,and adopts a combination of bottom plate drilling exploration and grouting reinforcement measures.48 construction boreholes were drilled,and a grouting volume of 49.85 tons was completed.14 boreholes were reinforced along the layers,with a total of 52.6 tons of cement injected.Through the application of drilling methods,these 5 geophysical anomaly areas were explored,verified,and treated.Finally,by analyzing and evaluating the water resistance performance,thickness,water inrush coefficient,and water hazard prevention technology of the coal seam waterproof layer,the results show that the working face can be safely mined under pressure.
water hazard prevention and control technologydrillinggrouting reinforcement treatmentsafety evaluation
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