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论文类型：期刊论文

发表时间：2017-04-01

发表刊物：INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES

收录刊物：SCIE、EI

卷号：94

页面范围：123-138

ISSN号：1365-1609

关键字：Microseismic monitoring; Strata movement; Vertically zoning method; Horizontally zoning method; Displacement angle

摘要：A microseismic monitoring technique is adopted to investigate the distribution regularity of microseismic events released by the coal mining - induced roof rock mass along the vertical and horizontal directions in combination with mine geological data. On the basis of the quantity and energy distributions of the microseismic events recorded using the microseismic monitoring technique, a zoning method is first established for the roof strata movement in the vertical and horizontal directions. The vertically zoning method is then applied to analyze the microseismic monitoring results obtained in the Dongjiahe Coal Mine, which divides rock mass into six zones along the vertical direction, i.e. the caved zone, the block zone, the vertical fracture through-going zone, the vertical fracture zone, the separation zone and the continuous zone. The horizontally zoning model divides the roof strata movement into three zones, i.e. the calm zone, the generation zone impacted by working face and the historical generation zone. After that, based on the horizontally zoning model, a method is developed to determine the displacement angle using the microseismic monitoring data, which has been verified in the Dongjiahe Coal Mine.