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A platform for research: civil engineering, architecture and urbanism
Method for preventing and treating large deformation of tunnel soft rock by adopting basalt fiber concrete
The invention discloses a method for preventing and treating large deformation of tunnel soft rock through basalt fiber concrete. The method comprises the steps that firstly, a telescopic joint steel arch or a yielding arch is erected in time after a tunnel is excavated; 2, hanging a net and spraying basalt fiber concrete on the net to form a primary support structure; 3, a tunnel waterproof layer is laid on the inner side of the primary support; 4, a secondary lining is constructed on the inner side of the tunnel waterproof layer, and basalt fiber concrete is adopted during secondary lining; according to the method, the basalt fiber concrete is sprayed in the construction period to serve as a primary support structure, then the basalt fiber concrete is adopted as a secondary lining structure, and the basalt fiber concrete is sprayed in the operation period to thicken the secondary lining to gradually and radically treat large deformation of soft rock of the tunnel. The characteristics of ultrahigh mechanical property, durability and anti-seepage performance of the basalt fiber concrete can be fully played, and the purpose of permanent treatment is finally achieved.
本发明公开了一种采用玄武岩纤维混凝土防治隧道软岩大变形的方法，包括：步骤1：隧道开挖后及时架设伸缩节点钢拱架或让压拱架；步骤2：挂网并在网上喷射玄武岩纤维混凝土形成初期支护结构；步骤3：在初期支护内侧铺设隧道防水层；步骤4：在隧道防水层内侧施作二次衬砌，且二次衬砌时采用玄武岩纤维混凝土；本发明从建设期喷射玄武岩纤维混凝土作为初期支护结构、然后采用玄武岩纤维混凝土作为二次衬砌结构、运营期喷射玄武岩纤维混凝土增厚二次衬砌逐步根治隧道软岩大变形，可充分发挥玄武岩纤维混凝土力学性能、耐久性与防渗性能均超高的特性，最终达到永久治理的目的。
Method for preventing and treating large deformation of tunnel soft rock by adopting basalt fiber concrete
The invention discloses a method for preventing and treating large deformation of tunnel soft rock through basalt fiber concrete. The method comprises the steps that firstly, a telescopic joint steel arch or a yielding arch is erected in time after a tunnel is excavated; 2, hanging a net and spraying basalt fiber concrete on the net to form a primary support structure; 3, a tunnel waterproof layer is laid on the inner side of the primary support; 4, a secondary lining is constructed on the inner side of the tunnel waterproof layer, and basalt fiber concrete is adopted during secondary lining; according to the method, the basalt fiber concrete is sprayed in the construction period to serve as a primary support structure, then the basalt fiber concrete is adopted as a secondary lining structure, and the basalt fiber concrete is sprayed in the operation period to thicken the secondary lining to gradually and radically treat large deformation of soft rock of the tunnel. The characteristics of ultrahigh mechanical property, durability and anti-seepage performance of the basalt fiber concrete can be fully played, and the purpose of permanent treatment is finally achieved.
本发明公开了一种采用玄武岩纤维混凝土防治隧道软岩大变形的方法，包括：步骤1：隧道开挖后及时架设伸缩节点钢拱架或让压拱架；步骤2：挂网并在网上喷射玄武岩纤维混凝土形成初期支护结构；步骤3：在初期支护内侧铺设隧道防水层；步骤4：在隧道防水层内侧施作二次衬砌，且二次衬砌时采用玄武岩纤维混凝土；本发明从建设期喷射玄武岩纤维混凝土作为初期支护结构、然后采用玄武岩纤维混凝土作为二次衬砌结构、运营期喷射玄武岩纤维混凝土增厚二次衬砌逐步根治隧道软岩大变形，可充分发挥玄武岩纤维混凝土力学性能、耐久性与防渗性能均超高的特性，最终达到永久治理的目的。
Method for preventing and treating large deformation of tunnel soft rock by adopting basalt fiber concrete
一种采用玄武岩纤维混凝土防治隧道软岩大变形的方法
NIU FUSHENG (author) / WANG HUA (author) / WEI XINYI (author) / CHEN HAIJUN (author) / WANG XIN (author) / CHEN ZHIYUAN (author) / WANG GUANGHUI (author) / ZHENG RUOHONG (author) / LI DAQIANG (author) / LIN CHUNGANG (author)
2024-05-14
Patent
Electronic Resource
Chinese
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