Research on development law of Ordovician limestone karst in Xiaoyun Coalfield

In order to analyze the three-dimensional distribution law of Ordovician limestone in Xiaoyun Coalfield, based on the evolutionary regularity of tectonic stress in the study area, we reveal the development mechanism of Ordovician limestone karst with the help of statistical analysis and physical che...

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Bibliographic Details
Published inMei kuang an quan Vol. 53; no. 12; pp. 22 - 27
Main Authors YU Xiaoge, LYU Huadong, ZHANG Deming, LYU Changxing, QU Linyan
Format Journal Article
LanguageChinese
Published Editorial Office of Safety in Coal Mines 01.12.2022
Subjects
development law of karst
fractal dimension
mine water inrush
water quality analysis
x-ray diffraction experiment
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Summary:In order to analyze the three-dimensional distribution law of Ordovician limestone in Xiaoyun Coalfield, based on the evolutionary regularity of tectonic stress in the study area, we reveal the development mechanism of Ordovician limestone karst with the help of statistical analysis and physical chemistry experience. First, according to the fractal theory, X-ray diffraction experiment and Glass slide qualification test, we analyze the complexity of fault structure, mineral component of rocks and development degree of fissures. Second, by means of water quality analysis, we calculate the Laagelier saturation index(L.S.I.), Ryzner stability index(R.S.I.), and precipitation index(P.S.I.) of water samples in the study area, and analyze the stability of karst aquifer. Finally, we conclude the development law of karst with the help of zone map of tectonic complexity, mineral component and results of water analysis experience. According to the study, influenced by faults, the development level in the central and wes
ISSN:1003-496X
DOI:10.13347/j.cnki.mkaq.2022.12.004