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简介:隧道施工时发生的涌水不仅对作业环境有影响,也会使掌子面不稳定,使喷射混凝土和锚杆施工不良。特别是在有多量、高压涌水的情况下,常造成重大事故。为此施工中就要改变施工方法、增加辅助工法,进行深孔注浆固结止水,使隧道周边及开挖面形成一个加固区,切断地下水流
Introduction: The gushing water in the tunnel construction not only has an impact on the working environment, but also causes the instability of the palm face and the bad construction of shotcrete and anchor. Especially in the case of a large amount of high-pressure gushing water, a serious accident is often caused. For this construction, we must change the construction method, increase auxiliary method, deep hole grouting consolidation stop water, the tunnel periphery and excavation surface to form a reinforcement zone, cut off the groundwater flow