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A zoning model for coal mining - induced strata movement based on microseismic monitoring

Cheng, G, Ma, T, Tang, C, Liu, H ORCID: 0000-0002-5437-4695 and Wang, S 2017 , 'A zoning model for coal mining - induced strata movement based on microseismic monitoring' , International Journal of Rock Mechanics and Mining Sciences, vol. 94 , pp. 123-138 , doi: 10.1016/j.ijrmms.2017.03.001.

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Abstract

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.

Item Type: Article
Authors/Creators:Cheng, G and Ma, T and Tang, C and Liu, H and Wang, S
Keywords: microseismic monitoring, strata movement, zoning method, displacement angle
Journal or Publication Title: International Journal of Rock Mechanics and Mining Sciences
Publisher: Pergamon-Elsevier Science Ltd
ISSN: 1365-1609
DOI / ID Number: 10.1016/j.ijrmms.2017.03.001
Copyright Information:

© 2017 Elsevier Ltd. All rights reserved.

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