Abstract
The karst paleo-sinkhole is a special geological structure widely found in the coal measures of northern China. Some paleo-sinkholes have high permeability and connectivity, making them excellent connectors between the karst aquifer and the coal seam. Consequently, during coal extraction disastrous water inrushes take place frequently, which cause severe loss not only in mine submersions and personnel casualties, but also in environmental quality. Locations and the geological and hydrogeological characteristics of paleo-sinkholes in northern China are presented. In-situ drilling and excavation results show that paleo-sinkholes have different hydrogeological behaviors in different regions and in different mines. Based on observed data, mining-induced strata failure in the seam floor is analyzed. The existence of paleo-sinkholes increases the floor strata failure zone. Numerical simulation then is adopted to model coal mining with the effects of both the paleo-sinkholes and the water pressure in the confined aquifer. Analyses of the simulation conclude that the paleo-sinkhole induces the increase in the strata failure and deformation. These make water inrushes more likely to happen.
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References
Itasca Consulting Group Inc. (1997) FLAC User Manual. University of Minnesota, USA
Li J, Zhou W (1988) Karst groundwater inrush and its prevention and control in coal mines in China. Karst hydrogeology and karst environment protection . In: Yuan D (ed) Proceedings 21st IAH conference, Beijing. Geological Publ House 176(2):1075–1082
Yin SX (2002) Analysis, simulation and applications of water inrush system in mine area (in Chinese). PhD Dissertation. China University of Mining and Technology
Yin SX, Wu Q (2004) Simulation and mechanism analysis of water inrush from karstic collapse columns in coal floor (in Chinese). Chin J Rock Mech Eng 23(15):2551–2557
Yin SX, Wang SX, Wu Q (2003) Characteristics of Karstic collapse columns in north coalfields of china and mechanism of water inrush from coal seam floor. Rock Stress. In: 3rd international symposium rock mechanic, Kumamoto, Japan. A. A. Balkema, Rotterdam, pp 517–522
Yu P (1994) Surface collapse in the karst mining areas in China (in Chinese). Mine Water Environ 13(2):21–25
Zhang J (1990) Theoretical criterion of water inrushes from confined aquifers under coal seams and its application (in Chinese). Mech Pract 12(2):35–38
Zhang J (2005) Investigations of water inrushes from aquifers under coal seams. Int J Rock Mech Min Sci 42(3):350–360
Zhang J, Shen B (2004) Coal mining under aquifers in China: a case study. Int J Rock Mech Min Sci 41(4):629–639
Zhang J, Zhang Y, Liu T (1997) Rock mass permeability and coal mine water inrush (in Chinese). Geological Publ House, Beijing
Zhong Y (2001) Studies on comprehensive techniques of water prevention in Kailuan mines (in Chinese). Coal Industry Press
Zhou WF (1997) The formation of sinkholes in karst mining areas in China and some methods of prevention. Environ Geol 31(1/2):50–58
Acknowledgements
We gratefully acknowledge the financial support provided for this research by the Program for New Century Excellent Talents in University (NCET), Guangdong Natural Science Foundation (grant# 04300109) and Science Foundation of North China Institute of Science and Technology.
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Yin, SX., Zhang, J. Impacts of karst paleo-sinkholes on mining and environment in northern China. Environ Geol 48, 1077–1083 (2005). https://doi.org/10.1007/s00254-005-0046-7
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DOI: https://doi.org/10.1007/s00254-005-0046-7