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中文摘要：
隧道围岩的流变对于隧道的长期稳定性影响很大，尤其对于深部隧道来讲更是如此．目前利用线性及非线性粘弹性流变模型对于隧道围岩的研究较多，初始状态多取为弹性状态．但在深部，由于初始地应力很大，在隧道开挖后，可能会马上出现塑性区．因此初始参照状态应该取为弹塑性状态，而且应该考虑塑性区及弹性区力学性质的不同．现利用Shvedov，Bingham模型理论研究了隧道围岩在初始时刻出现塑性区情况下的流变情况，并考虑塑性区及弹性区力学性质的不同，给出了流变区半径及应力应变的解析解，并分析了应力分布及流变半径的变化规律．
英文摘要：
The rheology of rock around tunnel affects the long-term stability of the tunnel remarkably, especially for tunnels at great depth. At present the majority of the research on rheology is based on the linear or nonlinear visco-elastic models, and the initial state is elastic. But at great depth, because of the great original stress, after excavation of tunnels, plastic zone may arises quickly, therefore elasto-plastic state should be taken as the initial state, and difference of mechanical properties in elastic and plastic zones should be considered. But the study in this aspect is unsufficient. Therefore in this paper, the theology of rock around tunnels is studied with the use of Shvedov-Bingham model, with the elasto-plastic state being taken as the initial state, and difference of mechanical properties in elastic and plastic zones being considered. Analytic solutions of theology radius and stress-strain state is obtained, and also the evolution law of them is analyzed.
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