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结合岭脚隧道涌水突泥实例,分析了该隧道涌水突泥的原因,阐述了该隧道涌水突泥综合处治技术及相关的防排水措施,采用管棚结合径向注浆的预支护与预加固施工技术措施。对典型断面开挖过程的监控结果表明:开挖后拱顶下沉值稳定在13cm左右,周边收敛值稳定在50mm左右,说明采用管棚结合径向注浆的预支护和预加固措施能够很好的控制围岩塑性区并且能够保障初期支护的安全。
Combined with the example of gushing water and mud in the ridge and foot tunnel, the reason of gushing water and mud in the tunnel is analyzed. The comprehensive treatment technique of gushing water and mud and the related measures of preventing and draining are expatiated. Pre-support and pre-reinforcement construction by combination of pipe and shed combined with radial grouting Technical measures The results of monitoring the typical section excavation process show that the vault settlement value is about 13cm after excavation, and the surrounding convergence value is stable at about 50mm, indicating that the pre-support and pre-reinforcement measures by using the combination of pipe roof and radial grouting can be very effective Good control of the plastic zone around the rock and can guarantee the safety of the initial support.