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Open excavation foundation pit and underground excavation vertical shaft construction technology
The open excavation foundation pit and underground excavation vertical shaft construction technology comprises the following steps that S1, vertical shaft construction is conducted, specifically, firstly, lock mouth ring beam construction is conducted, vertical shaft earthwork is excavated, a vertical shaft primary supporting structure is constructed, after construction of the vertical shaft primary supporting structure is completed, vertical shaft bottom sealing is conducted, a vertical shaft secondary lining structure is constructed, and the vertical shaft secondary lining structure is constructed to the position of a bottom plate of an open excavation structure; s2, underground excavation of the tunnel is conducted, specifically, transverse channel horsehead construction is conducted, a transverse channel primary supporting structure is constructed firstly through a CRD method, then a transverse channel secondary lining structure is constructed, and after construction of the transverse channel secondary lining structure is completed, underground excavation of a primary supporting structure and a secondary lining structure of the main tunnel is conducted; and S3, excavation of the foundation pit: excavating the open-cut foundation pit, synchronously cutting off a primary support structure of the vertical shaft, and connecting a bottom plate of the constructed main body structure with a secondary lining structure of the vertical shaft to finish construction of the open-cut and dark-cut junction. Smooth construction of open excavation and underground excavation structures is guaranteed, the construction efficiency is effectively improved, the construction risk is reduced, and the construction cost is reduced.
本发明公开了一种明挖基坑、暗挖竖井施工工艺，包括以下步骤：S1：竖井施工：先进行锁口圈梁施工，开挖竖井土方，并施工竖井初支结构，在竖井初支结构施工完成后，进行竖井封底，施作竖井二衬结构，竖井二衬结构施工至明挖结构底板位置；S2：暗挖隧道：进行横通道马头门施工，采用CRD法先施工横通道初支结构，之后施工横通道二衬结构，横通道二衬结构施工完成后，进行暗挖主体隧道初支结构及二衬结构施工；S3：基坑开挖：明挖基坑开挖，同步切除竖井初支结构，施作主体结构底板与竖井二衬结构进行连接，完成明暗挖交界处施工。本申请保证明挖与暗挖结构顺利施工，有效的提高施工效率，降低施工风险，减少施工成本。
Open excavation foundation pit and underground excavation vertical shaft construction technology
The open excavation foundation pit and underground excavation vertical shaft construction technology comprises the following steps that S1, vertical shaft construction is conducted, specifically, firstly, lock mouth ring beam construction is conducted, vertical shaft earthwork is excavated, a vertical shaft primary supporting structure is constructed, after construction of the vertical shaft primary supporting structure is completed, vertical shaft bottom sealing is conducted, a vertical shaft secondary lining structure is constructed, and the vertical shaft secondary lining structure is constructed to the position of a bottom plate of an open excavation structure; s2, underground excavation of the tunnel is conducted, specifically, transverse channel horsehead construction is conducted, a transverse channel primary supporting structure is constructed firstly through a CRD method, then a transverse channel secondary lining structure is constructed, and after construction of the transverse channel secondary lining structure is completed, underground excavation of a primary supporting structure and a secondary lining structure of the main tunnel is conducted; and S3, excavation of the foundation pit: excavating the open-cut foundation pit, synchronously cutting off a primary support structure of the vertical shaft, and connecting a bottom plate of the constructed main body structure with a secondary lining structure of the vertical shaft to finish construction of the open-cut and dark-cut junction. Smooth construction of open excavation and underground excavation structures is guaranteed, the construction efficiency is effectively improved, the construction risk is reduced, and the construction cost is reduced.
本发明公开了一种明挖基坑、暗挖竖井施工工艺，包括以下步骤：S1：竖井施工：先进行锁口圈梁施工，开挖竖井土方，并施工竖井初支结构，在竖井初支结构施工完成后，进行竖井封底，施作竖井二衬结构，竖井二衬结构施工至明挖结构底板位置；S2：暗挖隧道：进行横通道马头门施工，采用CRD法先施工横通道初支结构，之后施工横通道二衬结构，横通道二衬结构施工完成后，进行暗挖主体隧道初支结构及二衬结构施工；S3：基坑开挖：明挖基坑开挖，同步切除竖井初支结构，施作主体结构底板与竖井二衬结构进行连接，完成明暗挖交界处施工。本申请保证明挖与暗挖结构顺利施工，有效的提高施工效率，降低施工风险，减少施工成本。
Open excavation foundation pit and underground excavation vertical shaft construction technology
一种明挖基坑、暗挖竖井施工工艺
SUN WEISHUAI (author) / WANG XIAOFEI (author) / DONG LIANG (author) / CHENG LIN (author) / YANG WENCHAO (author) / WANG LEILEI (author)
2024-03-15
Patent
Electronic Resource
Chinese
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