Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method of large-span section underground excavation tunnel influenced by underground water
The invention provides a construction method of a large-span section underground excavation tunnel influenced by underground water. The construction method specifically comprises the steps that the section of the large-span tunnel primary support structure is divided into two layers, each layer is transversely divided into a left cavern, a middle cavern and a right cavern, the middle cavern is excavated firstly, then the caverns on the two sides of the upper layer are excavated, after the upper layer cavern is excavated to a certain length, the space of the upper layer cavern is used for constructing a waterproof curtain for the lower layer cavern, then the lower layer cavern is excavated, and the large-span tunnel primary support structure is constructed. The method comprises the following steps of: independently closing each cavern to form a ring, and finally connecting to form a large-section closed ring, carrying out back-building on three parts of secondary lining structure construction, alternately carrying out back-building of each part and dismantling of a primary support temporary support structure, and optimizing a temporary support dismantling method and time by utilizing a space-time effect. The smooth transition of stress conversion between the primary support and the secondary lining structure in each stage is ensured, and the construction safety is further ensured. The construction method of the large-span section underground excavation tunnel influenced by the underground water is worthy of being popularized and used in the field of subway tunnel construction.
本发明提供一种受地下水影响的大跨度断面暗挖隧道的施工方法。所述施工方法具体是：将大跨度隧道初支结构断面分成两层，每层横向分为左、中、右三个洞室，先开挖中部洞室，再开挖上层两侧洞室，待上层洞室开挖至一定长度后，利用上层洞室的空间给下层洞室施工止水帷幕后再开挖下层洞室，各洞室先单独封闭成环，最终连接成大断面封闭环，二次衬砌结构施工分三个部分进行回筑，各部分的回筑与初支临时支护结构的拆除交替进行，利用时空效应优化临时支护拆除方法及时间，确保各阶段初期支护与二次衬砌结构间的受力转换顺利过渡，进一步确保施工安全。所述的一种受地下水影响的大跨度断面暗挖隧道的施工方法值得在地铁隧道施工领域推广与使用。
Construction method of large-span section underground excavation tunnel influenced by underground water
The invention provides a construction method of a large-span section underground excavation tunnel influenced by underground water. The construction method specifically comprises the steps that the section of the large-span tunnel primary support structure is divided into two layers, each layer is transversely divided into a left cavern, a middle cavern and a right cavern, the middle cavern is excavated firstly, then the caverns on the two sides of the upper layer are excavated, after the upper layer cavern is excavated to a certain length, the space of the upper layer cavern is used for constructing a waterproof curtain for the lower layer cavern, then the lower layer cavern is excavated, and the large-span tunnel primary support structure is constructed. The method comprises the following steps of: independently closing each cavern to form a ring, and finally connecting to form a large-section closed ring, carrying out back-building on three parts of secondary lining structure construction, alternately carrying out back-building of each part and dismantling of a primary support temporary support structure, and optimizing a temporary support dismantling method and time by utilizing a space-time effect. The smooth transition of stress conversion between the primary support and the secondary lining structure in each stage is ensured, and the construction safety is further ensured. The construction method of the large-span section underground excavation tunnel influenced by the underground water is worthy of being popularized and used in the field of subway tunnel construction.
本发明提供一种受地下水影响的大跨度断面暗挖隧道的施工方法。所述施工方法具体是：将大跨度隧道初支结构断面分成两层，每层横向分为左、中、右三个洞室，先开挖中部洞室，再开挖上层两侧洞室，待上层洞室开挖至一定长度后，利用上层洞室的空间给下层洞室施工止水帷幕后再开挖下层洞室，各洞室先单独封闭成环，最终连接成大断面封闭环，二次衬砌结构施工分三个部分进行回筑，各部分的回筑与初支临时支护结构的拆除交替进行，利用时空效应优化临时支护拆除方法及时间，确保各阶段初期支护与二次衬砌结构间的受力转换顺利过渡，进一步确保施工安全。所述的一种受地下水影响的大跨度断面暗挖隧道的施工方法值得在地铁隧道施工领域推广与使用。
Construction method of large-span section underground excavation tunnel influenced by underground water
一种受地下水影响的大跨度断面暗挖隧道的施工方法
QIN HONGZHOU (Autor:in) / QIU JING (Autor:in) / GUO WENFANG (Autor:in) / JIANG XIN (Autor:in) / XU ZEJIAN (Autor:in) / YAN WEI (Autor:in) / HUANG SHENG (Autor:in) / PAN YUCHEN (Autor:in) / LI DONGHENG (Autor:in) / YAN HAOHAO (Autor:in)
27.05.2022
Patent
Elektronische Ressource
Chinesisch
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