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以郑西铁路客运专线函谷关隧道粉细砂层超前注浆加固为例,总结出针对砂层加固的施工工艺。该工法可有效固结砂层,能够很好地抑制砂层滑塌,有力地保证了隧道开挖作业的施工安全。
Taking the advanced grouting reinforcement of fine sand layer of the Huanguguan Tunnel of Zheng-Xi Railway Passenger Dedicated Line as an example, the construction technology for the reinforcement of the sand layer is summarized. The method can effectively consolidate the sand layer, which can well inhibit the sand slide and effectively ensure the construction safety of the tunnel excavation.