The results show that the cross-section shapes of roadways strongly influence the stability of surrounding rocks.
结果表明：断面形状对巷道围岩的稳定性有较大影响。
The deformation and failure under coupled action is more serious than the other situations, and softening action is more disadvantaged to the stability of surrounding rocks than swelling.
耦合作用下，围岩的变形和破碎比单因素作用下更加严重；其中线性软化对巷道稳定性的影响比破裂膨胀更大。
The stress on the surrounding rocks affects severely the stability of tunnel. To estimate the stability of tunnel needs the transformation tendency of the stress on the surrounding rocks.
围岩应力是影响隧道稳定性的根本因素，掌握隧道围岩应力的变化发展趋势，是准确判断隧道稳定性的前提。
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