Pipe jacking construction method in complex terrain environment

A pipe jacking and addressing technology, applied in fertilization devices, chemical instruments and methods, applications, etc., to achieve the effects of reduced disturbance, meeting civilized construction and safety technical requirements, and high quality

Inactive Publication Date: 2019-02-22
CHINA CONSTR 4TH ENG BUREAU 6TH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a construction method for pipe jacking in a complex location environment to overcome the shortcomings of existing pipe jacking construction methods in a complex location environment

Method used

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  • Pipe jacking construction method in complex terrain environment
  • Pipe jacking construction method in complex terrain environment
  • Pipe jacking construction method in complex terrain environment

Examples

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Embodiment 1

[0020] Project overview: The project of "Comprehensive Renovation of Municipal Auxiliary Phase I Bid Section of the East Area of ​​Hongqiao Business District" project is located within the scope of the East Area of ​​Hongqiao Business District, Shanghai. The construction scope includes: Yingbin 5th Road, Konggang 1st Road, Konggang 3rd Road, Konggang 8th Road, Donghang Road, Rainwater Pumping Station, Sewage Disinfection Station, Sewage Pumping Station, and Water Supply Pumping Station. The construction method of the present invention is well applied in the pipe jacking construction of the 616.39m rainwater pipe section from Yingbin 5th Road to Youle Road DN2700-DN3500. The surface settlement of the pipe jacking construction section is well controlled, and the overall surface has a slight tendency to settle. Among them, only 2#~1# pipe jacking sections have cracks on the ground at the DB9~DB13 measuring points, and the maximum settlement value is 129.75mm at the DB12-4 measurin...

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Abstract

The invention discloses a pipe jacking construction method in a complex terrain environment. A panel type 3.5m large cutter head earth pressure balance pipe jacking heading machine is adopted; cut soil enters a muddy water cabin from gaps of a main cutting edge; soil in the muddy water cabin is broken into mud under the joint action of a stirring bar behind a cutter head and muddy water; and the water and earth pressure of excavation surfaces is balanced by controlling the mud and water pressure and the mud weight of the muddy water cabin, so that the excavation surfaces are always in a stablestate. As for sections with poor soil quality and a large buried depth of pipelines, or sections located in a prosperous region with buildings (structures) or traffic trunks above and strict restrictions on displacement and groundwater by surrounding environments, the large-diameter earth pressure balance pipe jacking method is easy and safety in construction, high in quality, low in investment and short in construction period, extrusion of surrounding pipelines and settlement of the ground are effectively controlled, and smooth operation of ground transportation is ensured while important underground pipelines are protected during construction.

Description

technical field [0001] The invention relates to a construction method for pipe jacking in a complex site environment, belongs to the technical field of construction engineering, and is suitable for the construction of underground excavation pipeline projects in muddy or cohesive soil layers with pipe diameters ranging from 2700mm to 3500mm and buried depths exceeding 9m. Background technique [0002] In the complex environment of the urban core area, the traditional large-scale excavation method can no longer meet the requirements of civilized construction and safety technology, and pipe jacking construction is an underground pipeline construction method that does not need to excavate the surface layer and can pass through Roads, railways, ground buildings and various pipelines. [0003] The main feature of pipe jacking construction is that the single jacking length of the pipe jacking is up to 274 meters, and the single jacking length is long, including concrete straight li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/087E21D9/00C09K17/40C09K103/00
CPCC09K17/40C09K2103/00E21D9/005E21D9/087E21D9/0879
Inventor 龙敏健徐福昌柏志诚李莹磊岳云飞
Owner CHINA CONSTR 4TH ENG BUREAU 6TH
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