Surface subsidence characteristics of grout injection into overburden: case study of Yuandian No. 2 coalmine, China

Original Article

Abstract

A study on the surface subsidence characteristics is essential for evaluating the effects of subsidence control technologies and improving such technologies. One such technology is grout injection into overburden (GIO), which is used in coal mining areas. In the past, the subsidence reduction ratio—a single index—was often used to evaluate the final amount of subsidence control achieved by GIO; however, little research has been conducted on the dynamic process of surface subsidence. In this study, the surface subsidence characteristics of GIO on the side of a stopping line (SSL) of a longwall were examined through in situ monitoring, and the characteristics of areas with grouting were compared with those without. The final maximum subsidence, horizontal displacement, and subsidence rate decreased considerably (70.2, 80.4, and 77.5 %, respectively) with the use of GIO. However, 4.6 % of the mining height subsided at a certain surface point on the SSL before GIO controlled subsidence at that point. Compared with the duration of the active period without grouting, that with grouting and the corresponding subsidence decreased considerably (44.2 and 87.1 %, respectively). Generally, it is quite difficult to control the surface subsidence when GIO is implemented on the SSL of a longwall because the surface and subsurface are already affected by the coal extraction, without grouting on the side of the open-off cut. Thus, the success of GIO technology in the case study described in this paper demonstrates its effectiveness in controlling the surface subsidence in coal mining areas.

Keywords

Surface subsidence Subsidence control Grout injection into overburden Bedding plane separation 

References

  1. Can E, Kuşcu Ş, Kartal ME (2012) Effects of mining subsidence on masonry buildings in Zonguldak hard coal region in Turkey. Environ Earth Sci 66(8):2503–2518CrossRefGoogle Scholar
  2. Can E, Mekik Ç, Kuşcu Ş, Akçın H (2013) Monitoring deformations on engineering structures in Kozlu Hard Coal Basin. Nat Hazards 65(3):2311–2330CrossRefGoogle Scholar
  3. Chen SG, Guo H (2008) Numerical simulation of bed separation development and grout injecting into separations. Geotech Geol Eng 26(4):375–385CrossRefGoogle Scholar
  4. Choi J, Kim K, Lee S, Won J (2010) Application of a fuzzy operator to susceptibility estimations of coal mine subsidence in Taebaek City, Korea. Environ Earth Sci 59(5):1009–1022CrossRefGoogle Scholar
  5. de los Cobos G (2015) A historical overview of Geneva’s artificial recharge system and its crisis management plans for future usage. Environ Earth Sci 73(12):7825–7831CrossRefGoogle Scholar
  6. Dong S, Samsonov S, Yin H, Yao S, Xu C (2015) Spatio-temporal analysis of ground subsidence due to underground coal mining in Huainan coalfield, China. Environ Earth Sci 73(9):5523–5534CrossRefGoogle Scholar
  7. Guo H, Shen B, Chen S (2007) Investigation of overburden movement and a grout injection trial for mine subsidence control. In: Proceedings of 1st Canada/United States rock mechanics symposium, Vancouver, pp 1559–1566Google Scholar
  8. He GQ, Yang L, Ling GD, Jia FC, Hong D (1991) Mining subsidence engineering. China University of Mining and Technology Press, XuzhouGoogle Scholar
  9. Junker M, Witthaus H (2013) Progress in the research and application of coal mining with stowing. Int J Min Sci Technol 23(1):7–12CrossRefGoogle Scholar
  10. Lokhande RD, Prakash A, Singh KB, Singh KKK (2005) Subsidence control measures in coalmines: a review. J Sci Ind Res India 5(64):323–332Google Scholar
  11. Palarski J (1989) The experimental and practical results of applying backfill. In: Proceedings of the 4th international symposium on mining with backfill, Balkema, pp 33–37Google Scholar
  12. Singh KB (2007) Pot-hole subsidence in Son-Mahanadi Master Coal Basin. Eng Geol 89(1–2):88–97CrossRefGoogle Scholar
  13. State Bureau of Coal Industry (2000) Regulations of coal pillar design and extraction for buildings, water bodies, railways, main shafts and roadways. Coal Industry Press, BeijingGoogle Scholar
  14. Witthaus H, Gutberlet K, Junker M (2013) Stowing on longwall faces on the basis of experience acquired in the German coal mining industry. Min Rep 149(S1):17–28CrossRefGoogle Scholar
  15. Wu Q, Pang J, Qi S, Li Y, Han C, Liu T, Huang L (2009a) Impacts of coal mining subsidence on the surface landscape in Longkou city, Shandong Province of China. Environ Earth Sci 59(4):783–791CrossRefGoogle Scholar
  16. Wu X, Jiang X, Chen Y, Tian H, Xu N (2009b) The influences of mining subsidence on the ecological environment and public infrastructure: a case study at the Haolaigou Iron Ore Mine in Baotou, China. Environ Earth Sci 59(4):803–810CrossRefGoogle Scholar
  17. Xuan D, Xu J (2014) Grout injection into bed separation to control surface subsidence during longwall mining under villages: case study of Liudian coal mine,China. Nat Hazards 73(2):883–906CrossRefGoogle Scholar
  18. Xuan D, Xu J, Zhu W (2013) Backfill mining practice in China coal mines. J Mines Metals Fuels 61(7–8):225–234Google Scholar
  19. Xuan D, Xu J, Zhu W (2014) Dynamic disaster control under a massive igneous sill by grouting from surface boreholes. Int J Rock Mech Min 71:176–187Google Scholar
  20. Xuan D, Xu J, Wang B, Teng H (2015) Borehole investigation of the effectiveness of grout injection technology on coal mine subsidence control. Rock Mech Rock Eng. doi:10.1007/s00603-015-0710-5 Google Scholar
  21. Zhang J, Zhang Q, Sun Q, Gao R, Germain D, Abro S (2015) Surface subsidence control theory and application to backfill coal mining technology. Environ Earth Sci 74(2):1439–1448CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Hao Teng
    • 1
    • 2
  • Jialin Xu
    • 1
    • 2
  • Dayang Xuan
    • 2
  • Binglong Wang
    • 1
    • 2
  1. 1.School of MinesChina University of Mining and TechnologyXuzhouChina
  2. 2.State Key Laboratory of Coal Resources and Safe MiningChina University of Mining and TechnologyXuzhouChina

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