砂性地层盾构长距离下穿人工湖施工技术研究

随着城市地铁的不断发展,盾构法施工环境愈来愈复杂、风险控制要求也愈来愈严格以郑州市轨道交通4号线工程盾构法隧道施工为背景,某区间盾构机下穿人工湖--龙湖为工程施工实例:对盾构机在砂性地层中长距离下穿龙湖风险进行分析,对盾构机下穿龙湖施工技术进行研究与优化,提出一套关于盾构机下穿人丁湖的施工技术措施,确保盾构机安全顺利下穿龙湖,取得了良好的施工效果,以期为今后类似工程积累经验、提供技术参考.

Study on Construction Technique of Shield Long-distance Crossing under Artificial Lake in Sandy Stratum

With the continuous development of urban metro,the construction environment of shield method is more and more complex,and the control requirements of risk is also more and more strict.Taking the shield tunneling construction of Zhengzhou Metro Line 4 Project as the background,and relying on the engineering construction example of shield tunneling machine crossing under an artificial lake-Long Lake in an area,this paper analyzes the risk of shield tunneling machine crossing under Long Lake in long distance in sandy stratum,studies and optimizes the construction technique of shield tunneling machine crossing under Long Lake and puts forward a set of construction technical measures for shield tunneling machine crossing under artificial lake in order to ensure the shield tunneling machine safely and smoothly crossing under Long Lake and to achieve the good construction effect,which can accumulate the experience and provide the technical reference for the similar projects in the future.