国内首条过海地铁盾构隧道关键技术攻关研究

结合厦门轨道交通2号线工程过海区间隧道关键技术的研究与探索,从线位选择、预留二衬、防灾通风及疏散、海洋环境隧道耐久性、防排水、海底冻结法施工联络通道、盾构法与矿山法隧道水中对接等方面对过海盾构地铁隧道技术进行了全面的论证和比较,为过海盾构隧道的设计、施工、运营、管理提供强有力的技术支持。采用过海隧道盾构换刀、提前进行地质补勘、全程超前探孔探水、渗透水压力数值模拟计算、承压水环境下岩石裂隙注浆堵水技术、微震爆破等一系列新技术,也为后续建设类似工程提供参考和借鉴。

Research on the Key Technologies of the First Across Sea Metro Shield Tunnel in China

Based on the across sea tunnel engineering project of Xiamen metro line 2, the line route selection, the second liner preseted, the ventilation and evacuation when disasters,the durability of the tunnel structure in the sea environment, the waterproof and drainage, the construction of the undersea connecting passage of tunnel by freezing, and the end-to-end joint between the shield tunnel and the mining tunnel under sea, are discussed, which are helpful to the design, construction ,operation and management of across sea tunnel in the future.