A Construction Technology of Immersed Tube Tunnel in the Confluence Area of ​​Offshore and Inland Rivers

A technology of immersed tube tunnel and construction technology, applied in artificial islands, water conservancy projects, infrastructure projects, etc., can solve problems such as the influence of river navigation, and achieve the effect of short construction period

Active Publication Date: 2022-04-29
CENT SOUTH UNIV +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the cross-river immersed tube tunnels built in my country are mostly used in a single inland river, and the watershed is simple and stable. There are few studies on immersed tube construction in the complex scene of the inland river confluence area. The use of conventional immersed tunnel construction in the scene has a very large impact on the navigation of various rivers

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  • A Construction Technology of Immersed Tube Tunnel in the Confluence Area of ​​Offshore and Inland Rivers
  • A Construction Technology of Immersed Tube Tunnel in the Confluence Area of ​​Offshore and Inland Rivers
  • A Construction Technology of Immersed Tube Tunnel in the Confluence Area of ​​Offshore and Inland Rivers

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Embodiment Construction

[0071] The following is attached Figure 1-8 The application is described in further detail.

[0072] The embodiment of the present application discloses a construction technique of an immersed tube tunnel in a confluence area of ​​an offshore inland river.

[0073] Such as figure 1 As shown, a construction technology of immersed tube tunnel in the confluence area of ​​offshore and inland rivers mainly includes the following steps:

[0074] S1, the traffic evacuation of the water channel, the excavation and desilting construction of the foundation trench of the immersed tunnel, and the temporary floating channel are carried out in coordination with each other;

[0075] S2, prefabricated construction of immersed tube and pipe joints, the pipe joints are prefabricated in batches in the dry dock on the river bank;

[0076] S3, floating construction and sinking installation of immersed tube joints;

[0077] S4, backfilling construction of immersed tunnel foundation trench.

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Abstract

The invention discloses a construction technique for an immersed tube tunnel in an offshore inland river confluence area. At least one side of the water channel is unimpeded; S2, prefabricated immersed pipe joints in batches in the dry dock on the river bank; S3, floating and sinking installation and construction of immersed pipe joints; S4, backfilling construction of immersed tunnel foundation groove, considering the river To solve the problem of coordination of the navigation of various rivers in the confluence area, the construction of foundation trenches shall be arranged in stages according to the floating transport plan and water transport conditions, and at least one side of the channel shall be kept unimpeded during the construction of the foundation trenches in each stage, so as to effectively reduce the impact of construction on all parties in the confluence area of ​​rivers. Due to the influence of river navigation, the river can still maintain a good normal navigation state. In addition, the pipe joints are prefabricated in batches, floated, and lowered for installation to effectively improve construction efficiency.

Description

technical field [0001] The invention relates to the field of tunnel construction, in particular to a construction technique for an immersed tube tunnel in an offshore inland river confluence area. Background technique [0002] my country has a vast territory and numerous water systems, and many rivers intersect in many cities. With the development of economy and the rapid development of transportation technology, in order to overcome the barrier of water flow, many cross-river and sea-crossing projects were born. The smooth opening of the Hong Kong-Zhuhai-Macao Bridge has demonstrated the comprehensive strength of my country's transportation industry, and it has also made underwater tunnels a major trend in the development of cross-water transportation projects. [0003] At present, the relatively mature methods of underwater tunnel construction in China include mining method, shield method and immersed tube method. Compared with the other two construction methods, the imm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D29/073E02D17/06E02D17/08E02D17/12
CPCE02D29/073E02D17/06E02D17/08E02D17/12
Inventor 董子龙韩培培付鹤林杨旭东周轶赵韶晖周凌宁文远
Owner CENT SOUTH UNIV
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