DOI QR코드

DOI QR Code

A quantitative evaluation method on the stability of roadway surrounding rock in partial confining stress based on plastic zone shapes

  • Guo, Xiaofei (School of Energy and Mining Engineering, China University of Mining and Technology (Beijing)) ;
  • Li, Chen (School of Energy and Mining Engineering, China University of Mining and Technology (Beijing)) ;
  • Huo, Tianhong (School of Energy and Mining Engineering, China University of Mining and Technology (Beijing))
  • Received : 2020.10.21
  • Accepted : 2021.06.03
  • Published : 2021.06.10

Abstract

The reliability of reinforced concrete structures is frequently compromised by the deterioration caused by reinforcement corrosion. Evaluating the effect caused by reinforcement corrosion on structural behaviour of corrosion damaged concrete structures is essential for effective and reliable infrastructure management. In lifecycle management of corrosion affected reinforced concrete structures, it is difficult to correctly assess the lifecycle performance due to the uncertainties associated with structural resistance deterioration. This paper presents a stochastic deterioration modelling approach to evaluate the performance deterioration of corroded concrete structures during their service life. The flexural strength deterioration is analytically predicted on the basis of bond strength evolution caused by reinforcement corrosion, which is examined by the experimental and field data available. An assessment criterion is defined to evaluate the flexural strength deterioration for the time-dependent reliability analysis. The results from the worked examples show that the proposed approach is capable of evaluating the structural reliability of corrosion damaged concrete structures.

Keywords

Acknowledgement

The authors wish to sincerely thank various organizations for their financial support. This work was partially supported by the National Natural Science Foundation of China (Grant no. 52004289).

References

  1. Aker, E., Kuhn, D., Vavrycuk, V., Soldal, M. and Oye, V. (2014), "Experimental investigation of acoustic emissions and their moment tensors in rock during failure", Int. J. Rock Mech. Min. Sci., 70, 286-295. https://doi.org/10.1016/j.ijrmms.2014.05.003.
  2. Ardehjani, E.A., Ataei, M. and Rafiee, R. (2020), "Estimation of first and periodic roof weighting effect interval in mechanized longwall mining using numerical modeling", Int. J. Geomech., 20, 04019164. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001532
  3. Barth, N.C. (2014), "The cascade rock avalanche: implications of a very large alpine fault-triggered failure, New Zealand", Landslides, 11(3), 327-341. https://doi.org/10.1007/s10346-013-0389-1
  4. Cai, M.F. (2020), "Key theories and technologies for surrounding rock stability and ground control in deep mining", J. Min. Strat. Control Eng., 2, 5-13. https://doi.org/10.13532/j.jmsce.cn10-1638/td.20200506.001.
  5. Diederichs, M.S. (2018), "Early assessment of dynamic rupture hazard for rockburst risk management in deep tunnel projects", J. S. Afr. I. Min. Metall., 118(3), 193-204. https://doi.org/10.17159/2411-9717/2018/v118n3a1.
  6. Ding, L.J. and Liu, Y.H. (2018), "Study on deformation law of surrounding rock of super long and deep buried sandstone tunnel", Geomech. Eng., 16(1), 97-104. http://doi.org/10.12989/gae.2018.16.1.097.
  7. Detournay, E. and John, C.M.S. (1988), "Design charts for a deep circular tunnel under non-uniform loading", Rock Mech. Rock Eng., 21(2), 119-137. https://doi.org/10.1007/BF01043117.
  8. Fan, L. and Liu, S.M. (2019), "Fluid-dependent shear slip behaviors of coal fractures and their implications on fracture frictional strength reduction and permeability evolutions", Int. J. Coal Geol., 212, 103235. https://doi.org/10.1016/j.coal.2019.103235.
  9. Feng, G.R., Wang, P.F. and Chugh, Y.P. (2018), "Stability of gate roads next to an irregular yield pillar: A case study", Rock Mech. Rock Eng., 52, 2741-2760. https://doi.org/10.1007/s00603-018-1533-y.
  10. Garavand, A., Stefanov, Y.P., Rebetsky, Y.L., Bakeev, R.A. and Myasnikov, A.V. (2020), "Numerical modeling of plastic deformation and failure around a wellbore in compaction and dilation modes", Int. J. Numer. Anal. Met., 44(6), 823-850. https://doi.org/10.1002/nag.3041.
  11. Guo, X.F., Ma, N.J., Zhao, X.D., Zhao, Z.Q. and Li, Y.E. (2016), "The general shapes and criterion for surrounding rock mass plastic zone of round roadway", J. China Coal Soc., 44(8), 1871-1877. https://doi.org/10.13225/j.cnki.jccs.2016.0787.
  12. Guo, X.F. (2019), "Criterion of plastic zone shapes of roadway surrounding rock and its application", Ph.D. Dissertation, China University of Mining and Technology (Beijing), Beijing, China.
  13. Islavath, S.R., Deb, D. and Kumar, H. (2020), "Development of a roof-to-floor convergence index for longwall face using combined finite element modelling and statistical approach", Int. J. Rock Mech. Min. Sci., 127, 104221. https://doi.org/10.1016/j.ijrmms.2020.104221.
  14. Jiang, L.S., Kong, P., Shu, J.M. and Fan, K.G. (2019), "Numerical analysis of support designs based on a case study of a longwall entry", Rock Mech. Rock Eng., 52, 3373-3384. https://doi.org/10.1007/s00603-018-1728-2.
  15. Kang, H., Zhang, X., Si, L., Wu, Y. and Gao, F. (2010), "In-situ stress measurements and stress distribution characteristics in underground coal mines in China", Eng. Geol., 116, 333-345. https://doi.org/10.1016/j.enggeo.2010.09.015.
  16. Kang, H.P. (2020), "Spatial scale analysis on coal mining and strata control technologies", J. Min. Strat. Control Eng., 2, 5-30. https://doi.org/10.13532/j.jmsce.cn10-1638/td.20200119.001.
  17. Konicek, P., Soucek, K., Stas, L. and Singh, R. (2013), "Long-hole destress blasting for rockburst control during deep underground coal mining", Int. J. Rock Mech. Min. Sci., 61, 141-153. https://doi.org/10.1016/j.ijrmms.2013.02.001.
  18. Lamich, D., Marschalko, M., Yilmaz, I., Bednarova, P., Niemiec, D., Kubecka, K. and Mikulenka, V. (2015), "Subsidence measurements in roads and implementation in land use plan optimisation in areas affected by deep coal mining", Environ. Earth Sci., 75, 69. https://doi.org/10.1007/s12665-015-4933-2.
  19. Le, T.M.H., Gallipoli, D., Sanchez, M. and Wheeler, S. (2015), "Stability and failure mass of unsaturated heterogeneous slopes", Can. Geotech. J., 52(11), 1747-1761. https://doi.org/10.1139/cgj-2014-0190.
  20. Leitman, M.J. and Villaggio, P. (2009), "Plastic zone around circular holes", J. Eng. Mech., 135(12), 1467-1471. https://doi.org/10.1061/(ASCE)EM.1943-7889.0000062.
  21. Lekontsev, Y.M. and Sazhin, P.V. (2014), "Directional hydraulic fracturing in difficult caving roof control and coal degassing", J. Min. Sci., 50(5), 914-917. https://doi.org/10.1134/S106273911405010X.
  22. Li, C., Zhang, W.L., Wu. Z, Sun, Y.H., Zhu, C. and Zhang, X.H. (2020a), "A case study on asymmetric deformation mechanism of the reserved roadway under mining influences and its control techniques", Geomech. Eng., 22(5), 449-460. http://doi.org/10.12989/gae.2020.22.5.449.
  23. Li, J. (2020b), "The coal pillar design method for a deep mining roadway based on the shape of the plastic zone in surrounding rocks", Arab. J. Geosci., 13(12), 454. https://doi.org/10.1007/s12517-020-05501-9.
  24. Liu, H.T., Qiao, B.Y. and Ma, N.J. (2020), "Stability analysis and design of roadways in adjacent seams: A case study from Tashan coal mine in China", Arab. J. Geosci., 13(8), 1-11. https://doi.org/10.1007/s12517-020-05289-8.
  25. Ma, N.J., Li, J. and Zhao, Z.Q. (2015), "Distribution of the deviatoric stress field and plastic zone in circular roadway surrounding rock", J. China U. Min. Technol., 44, 206-213. https://doi.org/10.13247/j.cnki.jcumt.000309.
  26. Rajwa, S., Janoszek, T. and Prusek, S. (2020), "Model tests of the effect of active roof support on the working stability of a longwall", Comput. Geotech., 118, 103302. https://doi.org/10.1016/j.compgeo.2019.103302.
  27. Vatcher, J. and Sjoberg, J. (2015), "Developing 3-d mine-scale geomechanical models in complex geological environment", Eng. Geol., 203, 140-150. https://doi.org/10.1016/j.enggeo.2015.07.020.
  28. Vidigal-Souza, P.A., Vilas-Boas, D.B., Brandao, A.G. and Holz, M. (2020), "Seismic stratigraphy of Camamu basin, Northeastern Brazil", Pure Appl. Geophys., 177(11), 5207-5224. https://doi.org/10.1007/s00024-020-02580-3.
  29. Xia, K.Z., Chen, C.X., Fu, H., Pan, Y.C. and Deng, Y.Y. (2016), "Mining-induced ground deformation in tectonic stress metal mines: A case study", Eng. Geol., 210(5), 212-230. https://doi.org/10.1016/j.enggeo.2016.06.018.
  30. Yan, H., He, F.L., Yang, T., Li, L.Y. Zhang, S.B. and Zhang, J.X. (2016), "The mechanism of bedding separation in roof strata overlying a roadway within a thick coal seam: A case study from the Pingshuo coalfield, China", Eng. Fail. Anal., 62(4), 75-92. https://doi.org/10.1016/j.engfailanal.2015.12.006.
  31. Yang, D.W., Ma, Z.G., Qi, F.Z., Gong, P., Liu, D.P., Zhao, G.Z., and Zhang. R.C. (2017a), "Optimization study on roof break direction of gob-side entry retaining by roof break and filling in thick-layer soft rock layer", Geomech. Eng., 13(2), 195-215. http://dx.doi.org/10.12989/gae.2017.13.2.195.
  32. Yang, S.Q., Chen, M., Jing, H.W., Chen, K.F. and Meng, B. (2017b), "A case study on large deformation failure mechanism of deep soft rock roadway in Xin'an coal mine, China", Eng. Geol., 217, 89-101. https://doi.org/10.1016/j.enggeo.2016.12.012.
  33. Zhang, W.L., Li, C., Ren, J.J. and Wu, Z. (2020), "Measurement and application of vibration signals during pressure relief hole construction using microseismic system", Measurement, 158(6), 107696. https://doi.org/10.1016/j.measurement.2020.107696.
  34. Zhao, T. and Liu, C.Y. (2017), "Roof instability characteristics and pre-grouting of the roof caving zone in residual coal mining", J. Geophys. Eng., 14, 1463-1474. https://doi.org/10.1088/1742-2140/aa8eb6
  35. Zhao, Z.Q. (2014), "Mechanism of surrounding rock deformation and failure and control method research in large deformation mining roadway", Ph.D. Dissertation, China University of Mining and Technology (Beijing), Beijing, China.
  36. Zhu. C., Chang, Y., Cui, X.B., Ren, F.Q. and Zhang, X.H. (2019), "Study on the size effect of fracture intersections based on the fractal theory", Geotech. Geol. Eng., 37(4), 2999-3006. https://doi.org/10.1007/s10706-019-00818-z.