Determination of the Height of the"Three Zones"of Overlying Rock in Thick Coal Seam Mining
In order to ensure the safe mining of the Baozigou coal mining face,taking the 10109 working face as the engineering background,the development characteristics of the"three zones"of the overlying rock strata were studied.Firstly,the factors affecting the height and scope of the"three zones"were analyzed.The development height of the"three zones"was obtained through theoretical calculation and on-site observation.The development height measured by the two methods was basically consistent.The research results provide a theoretical basis for ensuring the safe production of other working faces in the Baozigou coal mining industry.
mining overburdenthree beltsfracture zonefalling belt
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