富水砂层盾构隧道洞门涌水涌砂处理措施研究

摘要

Combining with the construction practice of the first phase project of No.1 line of Nanchang rail transit,the paper introduces the treatment measures of groundwater and sand inflow at shield tunnel portal with rich water sand layer,sums up the construction experience by analyzing the accidents,so as to provide the direction for preventing the groundwater and sand inflow at tunnel portal in the process of the shield tunnel driving in rich water and sand layer.%结合南昌轨道交通1号线一期工程施工实践,详细介绍了富水砂层盾构隧道洞门涌水涌砂处理措施,通过对涌水涌砂事故的分析总结了施工经验,为以后富水砂层中盾构隧道掘进防止洞门涌水涌砂提供了指导。