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A construction method of inner piercing steel pipe for pipe jacking in water diversion project

A water diversion engineering and construction method technology, applied in the direction of pipes/pipe joints/fittings, pipe laying and maintenance, mechanical equipment, etc., can solve the problems of reducing the anti-deformation capacity of pipes, pipe jacking deformation, difficulty in control, etc., and it is not easy to achieve freedom Effects of sliding, reducing construction strength, and strong applicability

Active Publication Date: 2022-02-11
ZHEJIANG JIANGNANCHUN CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the jacking pipes are reinforced concrete pipes, and the poor installation quality of the rubber sealing rings between the pipe joints may lead to poor airtightness of the pipe as a whole. Therefore, it is necessary to install steel pipes in the jacking pipes as flow passages
[0003] During the construction process, the next section of steel pipe is hoisted into the working shaft and welded with the previous section of steel pipe, and then jacked by the pipe jacking machine. This cycle continues until all construction is completed. This method has the problem that the installation accuracy of the steel pipe cannot be adjusted and is difficult to control. The friction between the steel pipe and the jacking pipe is large, the wear is serious, and the service life is short; the steel pipe cannot be effectively aligned with the jacking pipe, which will cause the deformation of the jacking pipe and directly act on the steel pipe, causing the steel pipe to be damaged, greatly reducing the overall Pipeline resistance to deformation

Method used

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  • A construction method of inner piercing steel pipe for pipe jacking in water diversion project
  • A construction method of inner piercing steel pipe for pipe jacking in water diversion project
  • A construction method of inner piercing steel pipe for pipe jacking in water diversion project

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Embodiment Construction

[0056] Such as Figure 1 to Figure 6 Shown, be the construction method of a kind of water diversion engineering pipe jacking of the present invention and wear steel pipe inside, comprise the steps:

[0057] (a) Preparation for construction:

[0058] ⑴Clean up the inner bottom surface of the working well, and compact and level it;

[0059] (2) Install a baffle at the end of the pipe jacking to seal the outlet of the pipe jacking;

[0060] (b) The first steel pipe 1 is in place: the stinger 2 includes a U-shaped base 3, and spikes 4 are evenly distributed on the bottom surface of the U-shaped support, which improves the soil-breaking ability of the U-shaped base 3, and is firm in gripping the ground, which is not easy Dumping, shifting, simple and practical. Fixed pulleys 5 and fixed brackets 6 are symmetrically distributed on the U-shaped base 3, hydraulic cylinders 7 are rotatably connected between the fixed brackets 6, V-shaped swing rods 8 are rotatably connected to both ...

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Abstract

The invention discloses a construction method for internally piercing steel pipes for pipe jacking in water diversion projects, which comprises the following steps: (a) construction preparation; (b) placing the first steel pipe in place; (c) positioning the first steel pipe; (d) step by step Root piercing tube. The invention has low construction difficulty, high efficiency, flexible application, orderly step-by-step, convenient control, guaranteed construction quality, convenient steel pipe advancement, low equipment investment cost, firm connection of the front and rear steel pipes, stable structure, strong sealing performance, and long service life long.

Description

technical field [0001] The invention belongs to the technical field of pipeline construction, and in particular relates to a construction method for internally piercing steel pipes for pipe jacking in water diversion projects. Background technique [0002] Pipe jacking construction is one of the construction methods for laying pipelines underground and using less or no excavation technology, and is widely used in water diversion projects. Most of the jacking pipes are reinforced concrete pipes, and the poor installation quality of the rubber sealing rings between the pipe joints may lead to poor airtightness of the pipe as a whole. Therefore, it is necessary to install steel pipes in the jacking pipes as flow passages. [0003] During the construction process, the next section of steel pipe is hoisted into the working shaft and welded with the previous section of steel pipe, and then jacked by the pipe jacking machine. This cycle continues until all construction is completed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L1/036F16L1/06
CPCF16L1/036F16L1/06
Inventor 宋翔徐斌狄建刚郭洪林柴惠军
Owner ZHEJIANG JIANGNANCHUN CONSTR GRP
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