经过300多个日夜的紧张施工,10月26日上午10点,杭温高铁6标白岩山隧道建成贯通。据悉,这是杭温高铁6标贯通的首条隧道。

白岩山隧道位于永嘉县境内,全长约421米,隧道最大埋深118米,为单洞双线隧道,设计行车速度350公里/小时。据介绍,白岩山隧道穿越破残积粉质黏土、弱风化坚硬岩石等地层,同时,隧道地处楠溪江风景区,生态敏感、地质结构复杂多变,属高风险软弱围岩隧道,施工难度大、安全风险高。对此,施工过程中,项目部采用地质雷达及TSP实现精准超前地质预报、信息化监测等技术以确保隧道顺利建成、贯通。


据悉,目前,杭温高铁6标的麻谷岭隧道、花岩头隧道、花坦隧道、古庙隧道等均在稳步的施工推进中。杭温高铁建成后,将紧密串联长三角地区和杭州、义乌、温州三大都市圈,杭州至温州由目前的2小时压缩至1小时,形成一条从长三角核心区域辐射浙江东南地区的骨干城际轨道交通线。
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