Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Open tunnel subsurface excavation construction method for full-ring cover arch open cut tunnel under shallow-buried loess stratum
The invention provides a open tunnel subsurface excavation construction method for a full-ring cover arch open cut tunnel under a shallow-buried loess stratum. The open tunnel subsurface excavation construction method comprises the following steps that (1), temporarily water intercepting and draining is conducted; (2) an upper step cover arch is constructed, the construction involvesupper step excavation, a step cover arch steel frame installing, an inner mold installing, concrete is sprayed to the upper step cover arch, and the upper step cover arch is backfilled; and (3) open tunnel subsurface excavation construction of a open cut tunnel under cover arch pre-supporting is conducted, the construction involves open cut tunnel tunnel body excavation construction, open cut tunnel tunnel body supporting construction, the open cut tunnel lining and outside tunnel auxiliary engineering construction, and the open cut tunnel tunnel body supporting construction involves steel frame installation, reinforcing mesh hanging, longitudinal connecting ribs, feet-lock anchor pipes and spraying of the concrete. According to the open tunnel subsurface excavation construction method, the use efficiency of machinery and labor force is improved, and the problem that when a tunnel in a flood control season easily suffers from the safety influence caused by short-time heavy rainfall is solved.
本发明提供一种浅埋黄土地层下全环套拱明洞暗做施工方法，包括以下步骤：步骤(一).临时截排水；步骤(二).上台阶套拱施工，其包括上台阶开挖，台阶套拱钢架、内模安装，上台阶套拱喷射混凝土，上台阶套拱回填；步骤(三).套拱预支护下的明洞暗做施工，其包括明洞洞身开挖施工，明洞洞身支护施工，明洞衬砌、洞外附属工程施工，所述明洞洞身支护施工包括安装钢架、挂设钢筋网、纵向连接筋、锁脚锚管、喷射混凝土。本发明提高了机械和劳动力的使用效率、解决了隧道进入防洪汛期，易造受短时强降雨带来的安全影响缩。
Open tunnel subsurface excavation construction method for full-ring cover arch open cut tunnel under shallow-buried loess stratum
The invention provides a open tunnel subsurface excavation construction method for a full-ring cover arch open cut tunnel under a shallow-buried loess stratum. The open tunnel subsurface excavation construction method comprises the following steps that (1), temporarily water intercepting and draining is conducted; (2) an upper step cover arch is constructed, the construction involvesupper step excavation, a step cover arch steel frame installing, an inner mold installing, concrete is sprayed to the upper step cover arch, and the upper step cover arch is backfilled; and (3) open tunnel subsurface excavation construction of a open cut tunnel under cover arch pre-supporting is conducted, the construction involves open cut tunnel tunnel body excavation construction, open cut tunnel tunnel body supporting construction, the open cut tunnel lining and outside tunnel auxiliary engineering construction, and the open cut tunnel tunnel body supporting construction involves steel frame installation, reinforcing mesh hanging, longitudinal connecting ribs, feet-lock anchor pipes and spraying of the concrete. According to the open tunnel subsurface excavation construction method, the use efficiency of machinery and labor force is improved, and the problem that when a tunnel in a flood control season easily suffers from the safety influence caused by short-time heavy rainfall is solved.
本发明提供一种浅埋黄土地层下全环套拱明洞暗做施工方法，包括以下步骤：步骤(一).临时截排水；步骤(二).上台阶套拱施工，其包括上台阶开挖，台阶套拱钢架、内模安装，上台阶套拱喷射混凝土，上台阶套拱回填；步骤(三).套拱预支护下的明洞暗做施工，其包括明洞洞身开挖施工，明洞洞身支护施工，明洞衬砌、洞外附属工程施工，所述明洞洞身支护施工包括安装钢架、挂设钢筋网、纵向连接筋、锁脚锚管、喷射混凝土。本发明提高了机械和劳动力的使用效率、解决了隧道进入防洪汛期，易造受短时强降雨带来的安全影响缩。
Open tunnel subsurface excavation construction method for full-ring cover arch open cut tunnel under shallow-buried loess stratum
一种浅埋黄土地层下全环套拱明洞暗做施工方法
MU WEIQIANG (Autor:in) / ZHOU HONGJIANG (Autor:in) / LIU YAO (Autor:in) / HE XINDE (Autor:in) / SUN XIAOBIN (Autor:in) / LIU JIANXUE (Autor:in) / ZHANG HAI (Autor:in) / WANG HENG (Autor:in) / MA JINGBIN (Autor:in) / ZHANG BIN (Autor:in)
17.12.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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