热-水-力共同作用下圆形洞室弹塑性解析解

Abstract

Abstract: On the basis of the existing work and Mohr-Coulomb yield criterion, an elasto-plastic analysis solution for circular underground cavern is established considering the combined thermo-hydro-mechanical action. Under the conditions of single stress field, thermo-mechanical field, hydro-mechanical field and thermo-hydro-mechanical field and changing strength parmeters of a medium, the distribution and change of stresses and plastic zones in the surrounding rock mass are computed and compared respectively. The results show that the temperature field makes the radius of plastic zone some decrease, but the action of temperature is not obvious on the whole; compared with the action of the single stress field, the pore water pressure makes the plastic zones ,radial stresses and tangential stresses increase greatly.

Key words: combined thermo-hydro-mechanical action, circular cavern, elastoplasticity, analytical solution

CLC Number:

TV 542

ZHANG Yu-jun ，ZHANG Wei-qing . An elastoplastic analytical solution for circular cavern considering combined thermo-hydro-mechanical action[J]., 2013, 34(S2): 41-44.

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An elastoplastic analytical solution for circular cavern considering combined thermo-hydro-mechanical action

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