Movement of overlying rock and deformation law of surface well under multiple mining with large dip angle by Zhimin WANG, Yunpei LIANG, Quanle ZOU, Bichuan ZHANG, Qican RAN

“…The direction of displacement is always the inclination direction of the coal seam; the final study also found that the surface well defamation law in the upper part of the main key layer showed an overall “increase-decrease” alternating three times, and “increase-decrease” in the main key layer and lower part. …”
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