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DB51/T 2791-2021 川西高原公路隧道设计与施工技术规程

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DB51/T 2791-2021
川西高原公路隧道设计与施工技术规程
Design and construction regulation for highway tunnels in western sichuan p lateau
2021-08-02发布
2021-09-01 实施 目 次 前 言 .............................................................................. 1 1 范围 ................................................................................ 1 2 规范性引用文件 ...................................................................... 1 3 总则 ................................................................................ 1 4 术语 ................................................................................ 2 5 基本规定 ............................................................................ 4 5.1 总体要求 ....................................................................... 4 5.2 分级标准 ....................................................................... 4 5.3 设防原则 ....................................................................... 6 6 隧道勘察 ............................................................................ 6 6.1 一般规定 ....................................................................... 6 6.2 勘察手段与资料要求 ............................................................. 7 6.3 地质调绘 ....................................................................... 9 6.4 气象勘察 ...................................................................... 10 6.5 物探、钻探及测试 .............................................................. 11 7 隧道设计 ........................................................................... 13 7.1 一般规定 ...................................................................... 13 7.2 总体设计 ...................................................................... 13 7.3 洞口及洞门设计 ................................................................ 15 7.4 抗防冻衬砌结构设计 ............................................................ 16 7.5 防冻保温设计 .................................................................. 17 7.6 防水与排水设计 ................................................................ 19 7.7 运营通风设计 .................................................................. 24 8 隧道施工 ........................................................................... 24 8.1 一般规定 ...................................................................... 24 8.2 施工准备 ...................................................................... 25 8.3 施工通风 ...................................................................... 26 8.4 施工制氧供氧 .................................................................. 27 8.5 人员安全防护 .................................................................. 28 8.6 施工机械配套 .................................................................. 29 8.7 保温层施工 .................................................................... 29 8.8 防水与排水 .................................................................... 29 8.9 混凝土施工 .................................................................... 30 9 建筑材料 ........................................................................... 31 9.1 一般规定 ....................................................................... 31 9.2 混凝土材料 ..................................................................... 31 9.3 防水材料 ....................................................................... 34 9.4 保温材料 ....................................................................... 36 9.5 其他材料 ....................................................................... 36 附录 A (资料性) 海拔高度与最冷月平均气温关系 ....................................... 39 附录 B (资料性) 海拔高度与氧气含量关系............................................. 40 附录 C(资料性) 隧道结构抗冻计算 ................................................... 42 附录 D (资料性) 隧道保温层计算 .................................................... 43 附录 E (资料性) 隧道通风海拔高度系数............................................... 44 附录 F (资料性) 隧道供氧量计算 .................................................... 46