
1月14日上午,深圳地铁13号线应人石站至罗租站区间右线顺利贯通。这是建设中的地铁13号线贯通的首个长大区间,再次刷新了地铁13号线的建设进展。
右线隧道全长2.1公里,据深铁建设集团介绍,盾构机自罗租站始发,推进至应人石站接收。沿线地质复杂,上软下硬,存在密集孤石群、长距离高石英含量全断面微风化硬岩,岩石强度高达160MPa。
掘进中刀具磨损严重,开仓换刀频率高峰时达3米每处。不良地质中掘进,对地层扰动大,安全风险高。
为此,项目管理人员迎难而上,联合开展科研攻关,优化施工方案,通过优化掘进参数,严格控制盾构施工对土层的扰动。经全体参建人员的不懈努力,成功攻克软硬不均硬岩、孤石段,安全下穿机荷高速公路、高压燃气管道等重大风险区段。
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