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特长公路隧道全断面钻爆大型机械化施工技术

梅 敏¹, 张军灵¹, 文 佳¹, 王 军², 闫 静², 金恒翔²

作者简介：

梅 敏，高级工程师，E-mail: mmwindy963@163.com

作者单位：

1.中交路桥建设有限公司，北京 101100;2.北京交通大学隧道及地下工程教育部工程研究中心，北京 100044

基金项目：

*中交京冀建设开发（河北）有限公司科技项目：超长大断面公路隧道机械化技术研究；河北省自然科学基金面上项目(E2021508031)，地震作用下土质隧道压力拱的演化机理及荷载效应

摘要：

特长大断面公路隧道施工是整个高速公路线路施工工期的关键，为了保证施工质量、提高施工进度，依托首都环线高速公路G95承平段（河北承德—北京平谷）杨家窝铺特长大断面公路隧道工程，提出了“地质条件适应、环境污染低、性能匹配、功能可靠、技术先进、成本可控、通用性强”的大型机械化设备配套原则，分析了钻眼爆破、初期支护、仰拱施工及二次衬砌施工过程中所用机械设备的性能与效能，采用钻爆大型机械化施工技术后，杨家窝铺隧道的施工进度较计划进度提前1个月。
公路工程；隧道工程；特长；全断面；钻爆法；机械化施工

English：

The construction of an extra-long and large cross-section highway tunnel is the key for entire construction period in expressway. To ensure construction quality and improve construction progress, the principles for supporting large-scale mechanized equipment, such as matching with geological conditions, low environmental pollution, performance matching, reliable function, advanced technology, controllable cost, and strong universality, were proposed based on Yangjiawopu Extra-long and Large Cross-section Highway Tunnel project of G95 Chengping section of Capital Ring Expressway (Hebei Chengde-Beijing Pinggu). The performance and efficiency of mechanical equipment used in drilling and blasting, initial support, inverted arch construction, and secondary lining construction were analyzed. The construction progress of Yangjiawopu Tunnel is one month ahead of schedule after adopting the drilling and blasting large-scale mechanized construction technology.