Research on height of water conducted zones in overlying rock based on thin plate theory
The development height of water conducted zones is of great significance for coal mine water prevention and control work.In order to grasp the development range,scale,and spatial distribution characteristics of the coal seam roof collapse zone and fracture zone after the mining of Suntuan Coal Mine 11 1022 working face,and to determine the relationship between the collapse zone,fracture zone,and roof aquifer,theoretical analysis was conducted using thin plate theory and key layer theory.The expression for the deflection of the key layer thin plate was obtained,and the expected development height of the water conducted zone was 55.48 meters.At the same time,the height of the water conducted zone was obtained through on-site measurement of water injection leakage in the underground up-ward hole,which was 56.8～61.4 meters.The measured results were basically consistent with the theoretical prediction of the height of the water conducted zone,verifying the rationality of the theoretical analysis and providing theoretical guidance for actual production.
water conducted zonekey layerthin plate theorymine water prevention and controlmaximum deflection
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