【摘要】 用有限元方法分析了昆仑山隧道DK976+410断面围岩的冻融状况,结果表明:隧道边墙围岩温度场受到扰动比拱顶和仰拱底大,且由施工引起的融化夹层回冻较拱顶及仰拱底迟缓。由于工程活动影响,隧道贯通第30年围岩温度场仍未达到稳定。更多还原

【Abstract】 FEM analysis is made on freezing-thawing state of surrounding rocks of Kunlunshan tunnel. It is found that the influences of construction on temperature field of surrounding rocks at sidewall are larger than that of surrounding rocks at vault and inverted arch. The refreezing time of the residual thawed layer at sidewall is longer than that of the residual thawed layer at vault and inverted arch. The temperature field in surrounding rocks of the tunnel is not stable in the 30th year after construction of the tunnel.更多还原