摘要
以常州茶山站~聚湖路站盾构过曲线风井为依托,研究盾构过曲线风井施工技术。针对风井所处位置以及风井段结构的特殊性,从导台设计、端头加固以及盾构姿态等进行了分析研究.研究结果表明:通过研究以钢结构支撑导轨技术+混凝土淹埋导轨为核心的盾构过曲线风井综合施工技术,盾构机和后配套直接在导台上推进,无需重新吊装,节约了大量成本,且为盾构机二次始发提供了宝贵的维保时间,妥善解决了盾构机空推过曲线车站的问题,避免了盾构机重新吊装的施工风险以及盾构机拆机后重新装机后调试,达到了盾构机安全穿越区间风井并按照设计轴线到达风井始发端头的效果,节约工期15d。工程实践证明,该技术具有较高的创新水平,节能增效,安全可靠,大幅度拓展了适用领域。
Based on the shield passing curved ventilating shaft at Chashan Station and Juhu Road Station in Changzhou, the construction technology for shield tunnelling through curved ventilating shaft was studied. In view of the location of the ventilating shaft and its structure particularity, a research was carried out mainly from the aspects of design of the guiding platform, reinforcement of the ends and the shield posture. The results show that by discussing the comprehensive technology of the shield tunnelling through curved ventilating shaft with stee! structural supporting guideway technology and concrete submerged guide way as the core, the shield machine and its supporting equipment were directly pushed on the guide platform without re-hoisting, which could save a lot of cost, provide valuable maintenance time for the second start of it, properly handle the problem from tunnelling through curved station without loading, and avoid the risks of re-hoisting and debugging of shield machine after disassembly and reinstallation. In addition, it could achieve the effects safely tunelling through the interval ventilating shaft and reach the starting end of the shaft according to the design axis, thus saving the construction time for 15 days. The engineering practice has proved that the technology has a high level of innovation, energy saving and efficiency, safety and reliability, and greatly expands the application fields.
作者
李应姣
Li Yingjiao(China Railway 11^th Bureau Group City Rail Engineering Co. Ltd., Wuhan Hubei 430074, China)
出处
《铁道建筑技术》
2019年第2期110-112,共3页
Railway Construction Technology
基金
中铁十一局集团城市轨道工程有限公司科技研究开发计划课题(2015-16-07)
关键词
曲线风井
导台设计
超前预注浆
盾构姿态控制
curved wind well
guide platform design
advanced pre-grouting
shield attitude control
