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Sunken-tube-method construction technology for laying main sewage intercepting pipe

A technology of construction technology and immersed tube method, which is applied in the direction of earth mover/shovel, construction, etc., to achieve the effect of blocking impact, simple structure and reducing lateral impact

Inactive Publication Date: 2020-09-22
无锡市航道工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there are great defects in the construction of earth-rock cofferdam when it is applied to the above-mentioned riverbed

Method used

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  • Sunken-tube-method construction technology for laying main sewage intercepting pipe
  • Sunken-tube-method construction technology for laying main sewage intercepting pipe
  • Sunken-tube-method construction technology for laying main sewage intercepting pipe

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Experimental program
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Effect test

Embodiment 1

[0047] refer to Figure 1 to Figure 6 , which is an immersed pipe construction process disclosed in the present invention for laying sewage interceptors, including S1: measurement and stakeout. Measure the leveling points and guide points, and then set temporary axis control points and leveling control points at appropriate positions in the construction site as the control basis for immersed tube construction.

[0048] S2: pipe groove forming. For the river section with retaining wall built by masonry, the river bed is used as the foundation, and trenches for placing pipelines are excavated on the river bed.

[0049] During construction, the underwater earthwork excavation operation is carried out by using the positioning pile boat excavator. It should be excavated from top to bottom, and random digging is not allowed. As the excavation proceeded, the trench was extended from downstream to upstream along the bank retaining wall, taking care to avoid existing underground pip...

Embodiment 2

[0085] The invention discloses an immersed pipe method construction technology for laying sewage intercepting main pipes, including S1: measuring and setting out.

[0086] S2: pipe groove forming. For the river section with rocky mountains on both sides, use the rocky slope revetment as the foundation, and excavate grooves for placing pipelines on the rocky slope revetment.

[0087] During construction, water hydraulic breakers are used to drill along the pipeline axis on the slope protection of rock slopes and excavate trenches. The crushing is carried out in a top-down order, the above-water part is crushed first, and then the underwater part is crushed.

[0088] The width of the bottom of the trench finally excavated is 3m, the elevation of the bottom of the trench is 0.4m lower than that of the bottom of the pipeline, and the sides of the trench are sloped according to 1:0.5.

[0089] S3: Leveling the bottom of the groove. The gravel is transported to the vicinity of th...

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Abstract

The invention relates to the technical field of municipal pipe networks, in particular to a sunken-tube-method construction technology for laying a main sewage intercepting pipe. The technology includes the steps of measuring and setting out, tube groove forming, groove bottom leveling, laying of precast reinforced concrete bottom plate, pipeline sinking, pressing of precast concrete blocks, manufacturing of an inspection well and an intercepting well as well as filling the area around the pipeline with fine-aggregate concrete. According to the technology, construction operation is performed in a water environment, the influence of the water permeability of the river bed is avoided, and the main sewage intercepting pipe can be laid smoothly.

Description

technical field [0001] The invention relates to the technical field of municipal pipe networks, in particular to an immersed pipe method construction process for laying sewage interception main pipes. Background technique [0002] There are many main sewage pipes or branch pipes directly connected to the river (or water body) in the old city. Considering that the direct discharge of sewage into the river will seriously affect the water quality of the river, intercepting this part of sewage and directing it to the sewage treatment plant is the main task for the transformation of the old city. One of the projects, the sewage interceptor is needed at this time. [0003] Most of the sewage interceptors are parallel to the river bank and set in the river, and the height of the sewage interceptors must not exceed the above-mentioned main pipes or branch pipes, and are often located below the water surface. In response to this situation, the more common construction method is eart...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F5/10
CPCE02F5/104
Inventor 周少敏游栩之葛业勤
Owner 无锡市航道工程有限公司
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