Abstract
On the basis of the analysis of fault distribution characteristics in the Liangzhuang minefield, the site, channel, site distribution, and probability of karst water inrush from the Ordovician limestone affected by fault type, fault drop and fault dip is expounded. First, authors introduce methods of fault influencing factors and fault fractal dimension by synthesizing these faultage elements mentioned above. Next, the quantitative study of fault development characteristics in the Liangzhuang minefield is carried out using nonlinear theory, which reveals the intrinsic relationship between fault and karst fissure developing in the Ordovician limestone. Ultimately, through a combination of microslice identification and macrogeophysical analysis, the horizontal and vertical distribution regularities of Ordovician limestone karst fissures in the Liangzhuang minefield are studied, that is, the horizontal distribution shows discontinuity, and the vertical distribution shows relative continuity from the top interface of Ordovician limestone down the depth from 10 m to 40 m. This research can play an important guiding role in predicting water inrush from the Ordovician limestone karst during mining deep coal seam.
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Acknowledgements
The authors thank all the experts for their careful work and thoughtful suggestions. We gratefully acknowledge the financial support of the National Natural Science Foundation of China (41572244), (41807283) and (51804184), the Scientific Research Foundation of Shandong University of Science and Technology for Recruited Talents (2017RCJJ033), the Open Fund Research Project of State Key Laboratory of Mining Disaster Prevention and Control co-founded by Shandong Province and the Ministry of Science and Technology (MDPC2017ZR05) and the Taishan Scholars Construction Projects.
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Qu, X., Shi, L., Gao, W. et al. Characteristics of faults in the Liangzhuang mining area and their control on karst development in Ordovician limestones. Carbonates Evaporites 35, 118 (2020). https://doi.org/10.1007/s13146-020-00656-8
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DOI: https://doi.org/10.1007/s13146-020-00656-8