Geomechanics and Engineering

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Jet-grouting in ground improvement and rotary grouting pile installation: Theoretical analysis

  • Wang, You (Department of Civil Engineering, Tongji University) ;
  • Li, Lin (Department of Civil and Environmental Engineering, Louisiana State University) ;
  • Li, Jingpei (Department of Civil Engineering, Tongji University) ;
  • Sun, De'an (Department of Civil Engineering, Shanghai University)
  • Received : 2019.10.22
  • Accepted : 2020.03.23
  • Published : 2020.05.10
⟨ Previous Next ⟩

Abstract

The permeation grouting is a commonly used technique to improve the engineering geology condition of the soft ground. It is of great significance to predict the permeation range of the grout so as to ensure the effects of grouting. This paper conducts a theoretical analysis of jet-grouting effects in ground improvement and rotary grouting pile installation by utilizing deformation-permeation coupled poroelastic solutions based on Biot's theory and Laplace-Fourier integral transform technique. The exponential function and the intermittent trigonometric function are chosen to represent time-dependent grouting pressure usually encountered in ground improvement and rotary grouting pile installation process, respectively. The results, including the radial displacement, the hoop stress, the excess pore fluid pressure, the radial discharge, and the permeation radius of grout, are presented for different grouting time, radial positions and grouting lengths. Parametric study is conducted to explore the effects of variation of the exponent in the exponential grouting pressure-time relationship on grouting-induced responses. It is expected that the proposed solutions can be used to estimate the permeation range of grouting in ground improvement and rotary grouting pile installation.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China

The research described in this paper was financially supported by the National Natural Science Foundation of China (Grant No. 41772290).

References

  1. Abousleiman, Y. and Cui, L. (1998), "Poroelastic solutions in transversely isotropic media for wellbore and cylinder", Int. J. Solids Struct., 35(34-35), 4905-4929. https://doi.org/10.1016/S0020-7683(98)00101-2.
  2. Bergado, D.T., Anderson, L.R., Miura, N. and Balasubramaniam, A.S. (1996), Soft Ground Improvement in Lowland and Other Environments, ASCE.
  3. Biot, M.A. (1941), "General theory of three-dimensional consolidation", J. Appl. Phys., 12(2), 155-164. https://doi.org/10.1063/1.1712886.
  4. Cai, Y., Shi, B., Ng, C.W. and Tang, C.S. (2006), "Effect of polypropylene fibre and lime admixture on engineering properties of clayey soil", Eng. Geol., 87(3-4), 230-240. https://doi.org/10.1016/j.enggeo.2006.07.007.
  5. Celik, F. (2019), "The observation of permeation grouting method as soil improvement technique with different grout flow models", Geomech. Eng., 17(4), 367-374. https://doi.org/10.12989/gae.2019.17.4.367.
  6. Chang, M.H., Mao, T.W. and Huang, R.C. (2016), "A study on the improvements of geotechnical properties of in-situ soils by grouting", Geomech. Eng., 10(4), 527-546. https://doi.org/10.12989/gae.2016.10.4.527.
  7. Detournay, E. and Cheng, A.D. (1988), "Poroelastic response of a borehole in a non-hydrostatic stress field", Int. J. Rock Mech. Min. Sci. Geomech. Abstr., 25(3), 171-182. https://doi.org/10.1016/0148-9062(88)92299-1.
  8. Hassler, L., Hakansson, U. and Stille, H. (1992). "Computer-simulated flow of grouts in jointed rock", Tunn. Undergr. Sp. Technol., 7(4), 441-446. https://doi.org/10.1016/0886-7798(92)90074-R.
  9. Hou, F., Sun, K., Wu, Q., Xu, W. and Ren, S. (2019), "Grout diffusion model in porous media considering the variation in viscosity with time", Adv. Mech. Eng., 11(1), 1687814018819890. https://doi.org/10.1177%2F1687814018819890.
  10. Jalili, M., Zare, A. and Shabani, M.J. (2019), "Parametric and numerical study on soft ground improvement using stone column reinforced with geogrid", J. Eng. Geol., 12(4), 571-598.
  11. Kim, D. and Park, K. (2017), "Evaluation of the grouting in the sandy ground using bio injection material", Geomech. Eng., 12(5), 739-752. https://doi.org/10.12989/gae.2017.12.5.739.
  12. Li, L., Xiang, Z.C., Zou, J.F., and Wang, F. (2019), "An improved model of compaction grouting considering three-dimensional shearing failure and its engineering application", Geomech. Eng., 19(3), 217-227. https://doi.org/10.12989/gae.2019.19.3.217.
  13. Lignola, G.P., Flora, A. and Manfredi, G. (2008), "Simple method for the design of jet grouted umbrellas in tunneling", J. Geotech. Geoenviron. Eng., 134(12), 1778-1790. https://doi.org/10.1061/(ASCE)1090-0241(2008)134:12(1778).
  14. Liu, H., Zhou, H., Kong, G., Qin, H. and Zha, Y. (2017), "High pressure jet grouting column installation effect in soft soil: Theoretical model and field application", Comput. Geotech., 88, 74-94. https://doi.org/10.1016/j.compgeo.2017.03.005.
  15. Mehrabian, A. and Abousleiman, Y.N. (2013), "Generalized poroelastic wellbore problem", Int. J. Numer. Anal. Meth. Geomech., 37(16), 2727-2754. https://doi.org/10.1002/nag.2160.
  16. Modoni, G., Croce, P. and Mongiovi, L. (2006), "Theoretical modelling of jet grouting", Geotechnique, 56(5), 335-348. https://doi.org/10.1680/geot.2006.56.5.335.
  17. Njock, P.G.A., Shen, J.S., Modoni, G. and Arulrajah, A. (2018), "Recent advances in horizontal jet grouting (HJG): An overview", Arab. J. Sci. Eng., 43(4), 1543-1560. https://doi.org/10.1007/s13369-017-2752-3
  18. Rajapakse, R.K.N.D. (1993), "Stress analysis of borehole in poroelastic medium", J. Eng. Mech., 119(6), 1205-1227. https://doi.org/10.1061/(ASCE)0733-9399(1993)119:6(1205).
  19. Shehata, H. and Poulos, H. (2018), "Latest thoughts on ground improvement techniques", Proceedings of the 2nd GeoMEast International Congress and Exhibition on Sustainable Civil Infrastructures, Giza, Egypt, November.
  20. Shen, S.L., Wang, Z.F. and Cheng, W.C. (2017), "Estimation of lateral displacement induced by jet grouting in clayey soils", Geotechnique, 67(7), 621-630. https://doi.org/10.1680/jgeot.16.P.159.
  21. Singh, S. (2018), "A review on trends in ground improvement techniques", J. Geotech. Eng., 5(1), 18-22.
  22. Song, Z., Liang, F., Lin, C. and Xiang, Y. (2019), "Interaction of pore pressures in double-porosity medium: Fluid injection in borehole", Comput. Geotech., 107, 142-149. https://doi.org/10.1016/j.compgeo.2018.11.026.
  23. Stehfest, H. (1970), "Algorithm 368: Numerical inversion of Laplace transforms", Commun. ACM, 13(1), 47-49. https://doi.org/10.1145/361953.361969.
  24. Sun, Y., Zhang, J., Li, G., Ma, G., Huang, Y., Sun, J., Wang, Y. and Nener, B. (2019), "Determination of Young's modulus of jet grouted coalcretes using an intelligent model", Eng. Geol., 252, 43-53. https://doi.org/10.1016/j.enggeo.2019.02.021.
  25. Wallner, M. (1976), "Propagation of sedimentation stable cement pastes in jointed rock", Rock Mech. Waterways Constr., 2, 132-136.
  26. Yang, X.Z., Wang, X.H. and Lei, J.S. (2004), "Study on grouting diffusion radius of Bingham fluids", J. Hydraul. Eng., 6, 75-79.
  27. Yang, Z.Q., Hou, K.P., Guo, T.T. and Qiu, M.A. (2011), "Study of column-hemispherical penetration grouting mechanism based on Bingham fluid of time-dependent behavior of viscosity", Rock Soil Mech., 32(9), 2697-2703. https://doi.org/10.3969/j.issn.1000-7598.2011.09.023
  28. Zhang, N., Li, Z., Ma, Q., Ma, T., Niu, X., Liu, X. and Feng, T. (2018), "SI model of horizontal jet grouting reinforcement for soft soil", Geomech. Eng., 15(5), 1029-1038. https://doi.org/10.12989/gae.2018.15.5.1029.
  29. Zhang, N., Shen, S.L., Wu, H.N., Chai, J.C., Xu, Y.S. and Yin, Z.Y. (2015), "Evaluation of effect of basal geotextile reinforcement under embankment loading on soft marine deposits", Geotext. Geomembr., 43(6), 506-514. https://doi.org/10.1016/j.geotexmem.2015.05.005.
  30. Zou, J.F, and Zuo, S.Q. (2017). Similarity solution for the synchronous grouting of shield tunnel under the vertical non-axisymmetric displacement boundary condition. Adv. Appl. Math. Mech., 9(1), 205-232. https://doi.org/10.4208/aamm.2016.m1479.
  31. Zou, J.F. and Zhang, P.H. (2019), "Analytical model of fully grouted bolts in pull-out tests and in situ rock masses", Int. J. Rock Mech. Min. Sci., 113, 278-294. https://doi.org/10.1016/j.ijrmms.2018.11.015.