Abstract
Unlike the conventional approach to prevent and control water in the Ordovician limestone layer under the mine floor, which contains water. In this paper, based on the idea of “water hazard prevention and control changes from process control to source control”, innovatively determines that the study area has the basis of karst development based on the history of mine geological evolution, and analyzes the direction and area of karst development based on the fractal dimension of mine structure. According to the mineral composition and structure of Ordovician limestone, the vertical zonation of karst development is determined from the micro and macro aspects; according to the simulation of regional Ordovician limestone groundwater, it is determined that the Ordovician limestone water has cyclic alternation. Based on the comprehensive drilling data, the fracture development degree, the consumption of drilling fluid, the number of water-bearing boreholes entering the Ordovician limestone, the maximum water yield of boreholes, the number of drilled holes and the macro fracture development degree are analyzed in detail, and the horizontal and vertical development laws of the deep Ordovician limestone karst in Liangzhuang mine field are obtained. The best location for Karst development is at the north of F10 fault and 60–80 m from the top of Ordovician limestone in the study area. The correctness of the conclusion is verified by taking the 51101 working face with water inrush in Liangzhuang mine field as an example. This method is based on the combination of theoretical analysis and practical exploration, and the combination of macro analysis and micro analysis, which avoids the one-sidedness of exploring the development law of Ordovician limestone karst with single factor, and accurately predicts the development law of floor Ordovician limestone karst in detail, providing research ideas and methods for predicting the development law of deep Ordovician limestone karst in mined mines.
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The datasets generated during the current study are available from the corresponding author on reasonable request.
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The authors thank all of the experts for their careful work and thoughtful suggestions.
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This study was funded by National Natural Science Foundation of China (42002282).
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Zhang, D., Qian, L., Meng, M. et al. Research on the development regularity of Ordovician limestone karst in Liangzhuang coalfield. Carbonates Evaporites 38, 53 (2023). https://doi.org/10.1007/s13146-023-00876-8
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DOI: https://doi.org/10.1007/s13146-023-00876-8