Abstract
As the mining depths increase, an increasing number of mines in China encounter a new type of integrated dynamic disaster of rockburst and water inrush, causing great casualties and economic losses. This occurs constantly due to lacking understanding of its occurrence mechanism. This study investigated the mechanism of rockburst and water inrush as a new type of integrated dynamic disaster that has occurred in several mining areas in China. Mechanism of rockburst and water inrush mutually induced was proposed. A theoretical formula for vertical stress and floor failure depth was established and the formula indicates that dynamic stress increase lead to the floor failure depth increase, meanwhile, the thickness of aquiclude decrease. Microseismic monitoring technology was used to examine the effect of dynamic stress induced by overlying strata movement on floor failure and the results showed that the depth of microseismic events in coal floor reached the maximum 28 m when the dynamic stress reached the maximum. The finite element method was used to verify the effect of dewatering on stress distribution and the displacement of surrounding rock, and the results indicated that dewatering leads to the formation of the overlying strata settlement, vertical stress decrease in the region above the area, and vertical stress increase in the boundary region of water-rich area.
Similar content being viewed by others
References
Duan HF (2012) Study on mining deformation of floor and evaluation method of water inrush mining above confined aquifer. China University of Mining and Technology, Xuzhou
Jiang JQ (1993) Stress and motion of surrounding rock of the coal face. China Coal Industry Publishing Home, Beijing
Jiang FX, Ye GX (2008) Application of high-precision microseismic monitoring technique to water inrush monitoring in coal mine. Chin J Rock Mech Eng 27:1932–1938
Jiang FX, Qu XC, Yu ZX et al (2011) Real time monitoring and measuring early warning technology and development of mine pressure bumping. Coal Sci Technol 39:58–64
Jiang FX, Wei QD, Yao SL et al (2013) Key theory and technical analysis on mine pressure bumping prevention and control. Coal Sci Technol 41:6–9
Jiang YD, Pan YS, Jiang FX et al (2014) State of the art review on mechanism and prevention of coal bumps in China. J China Coal Soc 39:205–213
Jiang FX, Shi XF, Wang CW et al (2015) Mechanical mechanism of rock burst accidents in slice mining face under high pressure. Chin J Geo Eng 37:1123–1131
Li BY (1999) “Down Three Zones” in the prediction of the water inrush from coalbed floor aquifer-theory, development and application. J Shandong Inst Min Technol 18:11–18
Li T, Hao XL (2009) Mechanism of dynamic disaster and early-warning in deep mine. China University of Mining and Technology Press, Xuzhou
Lippmann H (1987) Mechanics of “bumps” in coal mines: a discussion of violent deformation in the sides of rockways in coal seams. Appl Mech Rev 40:1033–1043
Ministry of coal industry of PRC (1984) Codes of mine hydrogeology. Coal Industry Publishing House of China, Beijing
Niu JL (2008) A study on coupling effect between rock and water in coal floor and safety mining technology under high groundwater pressure. China Coal Research Institute, Xian Branch
Qian MG, Miao XX, Li LJ (1995) Mechanism for the fracture behaviors of main floor in longwall mining. Chin J Geo Eng 17:56–61
Sammarco O (1986) Spontaneous inrush of water in underground mines. Int J Mine Water 5:29–42
Shi LQ, Han J (2005) Theory and practice of dividing coal mining area floor into four-zone. J China Univ Min Technol 34:16–23
Shi LQ, Zhai PH, Wei JC et al (2009) Influencing action of water-inrush from roof on rockburst. J China Coal Soc 34:44–49
Shi XF, Jiang FX, Zhu HZ et al (2015) Research and practice on restoring production of rock burst accident working face in top slice during slice mining of extra-thick coal seams. J China Coal Soc 40:19–26
Song ZQ (1998) Underground pressure theory. China University of Mining and Technology Press, Xuzhou
Wang CW (2008) Prediction and prevention of rock bursting with microseismic monitoring and theory of spatial structures of overburden. University of Science and Technology Beijing, Beijing
Wang ZY, Liu HQ, Wang PY et al (1994) theory and practice of coal mining discipline on confined water. J China Coal Soc 19:40–48
Wu Q, Zhou W (2008) Prediction of groundwater inrush into coal mines from aquifers underlying the coal seams in China: vulnerability index method and its construction. Environ Geol 55(4):245–254
Wu Q, Liu YZ, Liu DH et al (2011) Prediction of floor water inrush: the application of gis-based ahp vulnerable index method to Donghuantuo coal mine, China. Rock Mech Rock Eng 44:591–600
Xie HP, Zhou HW, Xue DJ et al (2012) Research and consideration on deep coal mining and critical mining depth. J China Coal Soc 37:535–542
Zhang JC, Liu TQ (1993) Analysis and research of influential factors on underground roadway coal seam floor water bursting. Coal Mining Tech 4:35–39
Acknowledgements
The authors gratefully acknowledge financial support from the National Natural Science Foundation of China (Grant No. 51174016, 51274022) and the National Basic Research Program of China (973 program, No. 2010CB226803). The authors thank the anonymous reviewers for constructive comments that helped to improve the quality of the paper.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Shi, X., Jiang, F., Zhu, S. et al. Mechanism of Integrated Dynamic Disaster of Rockburst and Water Inrush: A New Type of Integrated Dynamic Disaster in China. Geotech Geol Eng 35, 1261–1270 (2017). https://doi.org/10.1007/s10706-017-0170-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10706-017-0170-7