Minimally-invasive non-excavation pipe jacking and pull technology

A trenchless, top-pulling technology, applied in pipeline laying and maintenance, pipes/pipe joints/fittings, machinery and equipment, etc., can solve problems such as increasing costs, affecting traffic, and affecting people's livelihood, and achieving the effect of reducing construction costs

Inactive Publication Date: 2013-11-20
JIANGSU WODI CONSTR ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the current municipal construction, the pipe jacking technology is used in the rain and sewage pipeline project. The technology is relatively mature, but it can only be used to make large-diameter pipes, and it cannot solve the construction of small-diameter branch pipes.
At present, projects with small pipe diameters such as 400mm can on

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  • Minimally-invasive non-excavation pipe jacking and pull technology
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  • Minimally-invasive non-excavation pipe jacking and pull technology

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[0015] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Here, the exemplary embodiments and description of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0016] This embodiment provides a minimally invasive, non-excavation pipe jacking process, and its work flow is as follows Figure 1-3 As shown, including the following steps:

[0017] Step one is to dig working well 1 and receiving well 2. A working well 1 and a receiving well 2 are dug at both ends of the road section where the pipeline is to be laid. After the excavation is completed, the working well 1 and the receiving well 2 are reinforced with channel steel.

[0018] Step two, drill pilot holes. Such as figure 1 , First set up the minimally invasive non-excavation drilling equipment 3 in the working well and fix it, then start the minimally invasive non-excavation drilling equ...

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Abstract

The invention discloses a minimally-invasive non-excavation pipe jacking and pull technology which comprises the following steps that 1, a working well and a receiving well are excavated; 2, minimally-invasive non-excavation drilling equipment is erected in the working well, and a hole is drilled towards the receiving well by a guide drilling bit till the drilling bit penetrates into the receiving well; 3, the guide drilling bit of the minimally-invasive non-excavation drilling equipment is dismounted, a back dragging reamer in a preset specification is mounted on a drilling rod of the minimally-invasive non-excavation drilling equipment, the minimally-invasive non-excavation drilling equipment is started for back dragging, and back dragging reaming begins till the back dragging reamer reams and is moved to the working well; and 4: (1), the back dragging reamer is dismounted, the minimally-invasive non-excavation drilling equipment is started, and the drilling rod passes through to the receiving well; (2), a pipe jacking machine is arranged in the receiving well; (3), a cement pipe is put into the receiving well, the drilling rod is sleeved with the cement pipe in a penetrating manner, and a pipe dragging device is mounted; and (4), the minimally-invasive non-excavation drilling equipment is started for the back dragging, the cement pipe is dragged by the pipe dragging device, and the pipe jacking machine is started and jacks the cement pipe into the hole till the cement pipe is dragged and jacked to a preset position.

Description

technical field [0001] The invention relates to a construction technology of minimally invasive non-excavation pipe jacking technology, in particular to a small-diameter pipe laying technology for branch pipes in rain and sewage diversion projects. Background technique [0002] In the current municipal construction, the pipe jacking technology is used in the rain and sewage pipeline project. The technology is relatively mature, but it can only be used to make large-diameter pipes, and it cannot solve the construction of small-diameter branch pipes. At present, projects with small pipe diameters such as 400mm can only adopt road surface excavation and buried pipe technology, but this technology damages the road surface, causes a lot of dust, damages the surrounding environment, and affects traffic, resulting in more congestion in crowded cities. After the burial, the road surface needs to be repaired, which greatly increases the cost and affects people's livelihood. Cont...

Claims

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Application Information

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IPC IPC(8): F16L1/028
Inventor 陈重庆杜文浩成曦周峰
Owner JIANGSU WODI CONSTR ENG
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