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为了深入探讨浅埋、大跨度、偏压等复杂条件下公路隧道衬砌结构的安全性,结合卧龙岗隧道左线出口段浅埋偏压、边坡滑动以及断裂带等不利因素,对可能出现的隧道结构安全问题进行了分析论证;通过分析围岩位移稳定性、边坡稳定性以及衬砌结构受力情况,对隧道二衬的安全性进行了全面评价。结果表明:卧龙岗隧道围岩位移基本趋于稳定,边坡处于稳定状态,隧道出口段整体是安全稳定的;该评价结果为隧道后期的安全运营提供了可靠依据。
In order to deeply discuss the safety of lining structure of highway tunnel under complicated conditions such as shallow buried, long-span and biased pressure, combined with unfavorable factors such as shallow buried bias pressure, slope slip and fault zone in the left exit of Wollongong tunnel, The safety of the tunnel structure is analyzed and demonstrated. The safety of the tunnel lining is comprehensively evaluated by analyzing the displacement stability of the surrounding rock, the stability of the slope and the stress of the lining structure. The results show that the displacement of surrounding rock in Wolongong Tunnel basically stabilizes, the slope is in a steady state and the exit section of the tunnel is safe and stable. The evaluation results provide a reliable basis for the safe operation of the tunnel in the later stage.