Method for repairing small-bore sewage pipeline
A technology of sewage pipes and repair methods, which is applied in the direction of sewer pipe systems, waterway systems, water supply devices, etc., can solve problems such as difficult repairs and high costs, and achieve the effects of reducing difficulty and strength, restoring the flow area of pipes, and reducing costs
Inactive Publication Date: 2016-11-09
安越环境科技股份有限公司
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Problems solved by technology
In view of the defects of pipeline deformation and collapse, for small-diameter pipelines, the pipe bursting method must be used to update the original pipeline, but the application process requires the excavation of work pits, which is costly, and other non-excavation repair techniques are difficult to repair.
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[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0020] A method for repairing a small-diameter sewage pipeline, comprising the following steps:
[0021] The first step is to confirm the position A of the deformation defect of the pipeline to be repaired between the adjacent No. 1 inspection well 10 and No. 2 inspection well 20, and use the horizontal directional drilling machine 40 to drill the pilot hole at a distance through the flat drill bit 41, and then go through the 2 Inspection well No. 1, the pipeline to be repaired to inspection well No. 1, the horizontal directional drilling rig starts to drill into the ground at a distance and enters the middle of the sewage pipeline through the No. 3 inspection well, which is adjacent to the No. 2 inspection well; for details, refer to Instructions attached figure...
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The invention discloses a method for repairing a small-bore sewage pipeline. The method comprises the steps that 1, the position of a deforming flaw portion located on the to-be-repaired pipeline is determined, and a pilot hole is drilled in the distance through a horizontal directional drilling machine via a flat drill bit; 2, a reamer bit is replaced on a first inspection well, and the other end of the reamer bit is connected with a short steel pipe; 3, the horizontal directional drilling machine is used for pulling back, the original pipeline shape of the deforming flaw portion of the to-be-repaired pipeline is restored, and a primary liner is formed by the short steel pipe; 4, the reamer bit is demounted from a second inspection well, and a drill rod of the horizontal directional drilling machine is pulled back till the drill rod is pulled away from the ground; 5, a hose woven from glass fibers is pulled into the primary liner, then the hose is inflated to expand to be tightly attached to the primary liner, an ultraviolet curing process is adopted, and a secondary liner is formed by the hose woven from the glass fibers. The method is mainly applied to achieving trenchless repairing of deformation and collapse of the small-bore municipal wastewater pipeline (DN300-DN600), and the original pipeline open area can be restored.
Description
technical field [0001] The invention relates to municipal engineering projects, in particular to a method for repairing small-diameter sewage pipes. Background technique [0002] Trenchless pipeline repair technology is a technology for repairing and updating underground pipelines without excavation or micro-excavation. It is more and more widely used as the pipeline construction age grows longer. In view of the defects of pipeline deformation and collapse, for small-diameter pipelines, the pipe bursting method must be used to update the original pipeline, but the application process requires the excavation of work pits, which is costly, and other non-excavation repair techniques are difficult to repair. . Contents of the invention [0003] In order to solve the above problems, the present invention provides a small-diameter sewage pipeline repair method, which is a real non-excavation technology with low cost. [0004] The present invention is realized through the follo...
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IPC IPC(8): E03F3/06
CPCE03F3/06E03F2003/065
Inventor 廖宝勇王清顺遆仲森
Owner 安越环境科技股份有限公司