The property of time–dependent deformation of rockmass surrounding tunnel is studied and a new method is presented to analyse the the time–dependent convergence displacement of surrounding rockmass of circular opening in this paper. Taking rockmass as a quasi–creep material and using integral creep model, the creep parameters and predisplacement of the rockmass can be estimated by field convergence measurments

  • INTRODUCTION

  • ELEMENTAL ANALYSIS FOR THE MECHANISM OF SURROUNDING ROCKMASS

  • CREEP MODEL OF ROCKMASS

  • ANALYSIS FOR THE TIME-DEPENDENT PROPERTIES OF CONVERGENCE DEFORMATION OF SURROUNDING ROCKMASS

  • CONCLUSION

  • REFERENCES

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