Study on the Fracture of Hard and Thick Sandstone and the Distribution Characteristics of Microseismic Activity

Original Paper
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Abstract

The movement of hard and thick key stratum during underground coal extraction via longwall top coal caving differs from that of other types of overlying strata. Therefore, numerous problems such as roadway instability, rock burst and strong mining-induced mine seismicity will be encountered as a result of the fracture of a hard and thick key stratum. The key to controlling the behavior of strata is to understand the movement and fracture pattern of the hard and thick key stratum. Taking the 103up02 working face of Baodian coal mine as a case study in this study, according to the in situ measured microseismic data, the rule of fracture of overlying hard and thick sandstone caused by working face mining is studied, and the mechanism of dynamic pressure impact induced by hard and thick strata fracture is explained. Finally, the dynamic pressure control technology is put forward. The research results are of great significance for coal mining under hard and thick strata, mastering the fracture rules of hard and thick strata and predicting dynamic disasters.

Keywords

Hard and thick sandstone Fracture Microseismic monitoring Dynamic disaster 

Notes

Acknowledgements

This paper was financially supported by the National Natural Science Foundation of China (Grants 51374155, 51704182, 51704185), Natural Science Foundation of Shandong Province (Grants ZR2017BEE045, ZR2017BEE050), Shandong Province Key Development Projects (Grants 2017GGX2015, 2017GGX90102), and the Graduate Innovation Fund of Shandong University of Science and Technology (Grant SDKDYC180305).

References

  1. Abdul-Wahed MK, Heib MA, Senfaute G (2006) Mining-induced seismicity: seismic measurement using multiplet approach and numerical modeling. Int J Coal Geol 66(1):137–147CrossRefGoogle Scholar
  2. Bertoncini CA, Hinders MK (2010) Fuzzy classification of roof fall predictors in microseismic monitoring. Measurement 43(10):1690–1701CrossRefGoogle Scholar
  3. Cao AY, Zhu LL, Li FC et al (2014) Characteristics of T-type overburden structure and tremor activity in isolated face mining under thick-hard strata. J China Coal Sci 39(2):328–335Google Scholar
  4. Durrheim RJ, Haile A, Roberts MKC et al (1998) Violent failure of a remnant in a deep South African gold mine. Tectonophysics 289(1–3):105–116CrossRefGoogle Scholar
  5. Fan J, Dou LM, He H et al (2012) Directional hydraulic fracturing to control hard-roof rockburst in coal mines. Int J Min Sci Technol 22(2):177–181CrossRefGoogle Scholar
  6. Ge M, Wang H, Hardy H Jr et al (2008) Void detection at an anthracite mine using an in-seam seismic method. Int J Coal Geol 73(3):201–212CrossRefGoogle Scholar
  7. Guo WJ, Li YY, Yin DW et al (2016) Mechanisms of rock burst in hard and thick upper strata and rock-burst controlling technology. Arab J Geosci 9(10):561CrossRefGoogle Scholar
  8. Jiang LS, Sainoki A, Mitri HS et al (2016) Influence of fracture-induced weakening on coal mine gateroad stability. Int J Rock Mech Min Sci 88:307–317Google Scholar
  9. Jiang LS, Zhang PP, Chen LJ et al (2017) Numerical approach for goaf-side entry layout and yield pillar design in fractured ground conditions. Rock Mech Rock Eng 4:1–23Google Scholar
  10. Lesniak A, Isakow Z (2009) Space-time clustering of seismic events and hazard assessment in the Zabrze–Bielszowice coal mine, Poland. Int J Rock Mech Min Sci 46(5):918–928CrossRefGoogle Scholar
  11. Li T, Cai MF, Cai M (2007) A review of mining-induced seismicity in China. Int J Rock Mech Min Sci 44(8):1149–1171CrossRefGoogle Scholar
  12. Lu CP, Liu Y, Wang HY et al (2016) Microseismic signals of double-layer hard and thick igneous strata separation and fracturing. Int J Coal Geol 160–161:28–41CrossRefGoogle Scholar
  13. Mahdevari S, Shahriar K, Sharifzadeh M et al (2016) Assessment of failure mechanisms in deep longwall faces based on mining-induced seismicity. Arab J Geosci 9(18):709CrossRefGoogle Scholar
  14. Mondal D, Roy PNS, Behera PK (2017) Use of correlation fractal dimension signatures for understanding the overlying strata dynamics in longwall coal mines. Int J Rock Mech Min Sci 91(1):210–221Google Scholar
  15. Shen B, King A, Guo H (2008) Displacement, stress and seismicity in roadway roofs during mining-induced failure. Int J Rock Mech Min Sci 45(5):672–688CrossRefGoogle Scholar
  16. Wang W, Cheng YP, Wang HF et al (2015a) Coupled disaster-causing mechanisms of strata pressure behavior and abnormal gas emissions in underground coal extraction. Environ Earth Sci 74(9):6717–6735CrossRefGoogle Scholar
  17. Wang W, Cheng YP, Wang HF et al (2015b) Fracture failure analysis of hard–thick sandstone roof and its controlling effect on gas emission in underground ultra-thick coal extraction. Eng Fail Anal 54:150–162CrossRefGoogle Scholar
  18. Wang J, Ning JG, Jiang JQ et al (2016a) Research on the energy criterion for rockbursts induced by broken hard and thick rock strata and its application. Geotech Geol Eng 35(2):1–16Google Scholar
  19. Wang P, Jiang JQ, Zhang PP et al (2016b) Breaking process and mining stress evolution characteristics of a high-position hard and thick stratum. Int J Min Sci Technol 26(4):563–569CrossRefGoogle Scholar
  20. Wang J, Jiang JQ, Li GB et al (2016c) Exploration and numerical analysis of failure characteristic of coal pillar under great mining height longwall influence. Geotech Geol Eng 34(2):689–702CrossRefGoogle Scholar
  21. Wang G, Wu M, Wang R et al (2016d) Height of the mining-induced fractured zone above a coal face. Eng Geol 216:140–152CrossRefGoogle Scholar
  22. Xu JL, Qian MG, Zhu WB (2005) Study on influences of primary key stratum on surface dynamic subsidence. Chin J Rock Mech Eng 24(5):787–791 (in Chinese) Google Scholar

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.State Key Laboratory of Mining Disaster Prevention and Control Co–founded by Shandong Province and the Ministry of Science and TechnologyShandong University of Science and TechnologyQingdaoChina
  2. 2.Department of Chemistry and Chemical EngineeringJining UniversityQufuChina
  3. 3.Graduate School of EngineeringNagasaki UniversityNagasakiJapan

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