阅读说明：本技术 一种长距离非开挖定向钻污水管道加工工艺 (Long-distance trenchless directional drilling sewage pipeline processing technology ) 是由 崔丽芳 叶标 席旭军 李永刚 张佩莹 贺慧琳 杜奇能 王梦月 于 2019-02-13 设计创作，主要内容包括：本发明涉及一种长距离非开挖定向钻污水管道加工工艺,对管道的外壁采用环氧煤沥青防腐漆进行防腐处理,各管道之间采用焊接连接,然后进行钻进预埋,在管道内部设置内衬树脂软管,利用拉入式原位紫外光固化法进行处理,完成对污水管道的加工。与现有技术相比,本发明可在狭窄空间操作,具有施工周期短、对交通影响小、防腐效果好,管道抗击外力破坏能力大幅提高等优点。(The invention relates to a processing technology of a long-distance trenchless directional drilling sewage pipeline, which is characterized in that the outer wall of the pipeline is subjected to anti-corrosion treatment by epoxy coal pitch anti-corrosion paint, the pipelines are connected by welding and then drilled and embedded, a lining resin hose is arranged inside the pipeline, and the pipeline is processed by a pull-in type in-situ ultraviolet curing method to finish the processing of the sewage pipeline. Compared with the prior art, the invention can be operated in narrow space and has the advantages of short construction period, small influence on traffic, good corrosion prevention effect, greatly improved external force damage resistance of the pipeline and the like.)

1. The utility model provides a sewage pipeline processing technology is bored to non-excavation orientation of long distance, its characterized in that adopts thick liquid type ring oxygen coal pitch anticorrosive paint to carry out anticorrosive treatment to the outer wall of pipeline, adopts welded connection between each pipeline, then creeps into pre-buried, sets up inside lining resin hose at pipeline inside, utilizes pull-in formula normal position ultraviolet curing method to handle, accomplishes the processing to sewage pipeline.

2. The process for machining the long-distance trenchless directional drilling sewage pipeline according to claim 1, wherein the pipeline is a spiral seam automatic submerged arc welded steel pipe.

3. The processing technology of the long-distance trenchless directional drilling sewage pipeline as claimed in claim 1, wherein the outer wall of the pipeline is coated with a primer firstly and then coated with three coats of finish paint.

4. The long-distance trenchless directional drilling sewage pipeline processing technology as claimed in claim 3, wherein the primer is thick paste type epoxy zinc-rich primer.

5. The processing technology for the long-distance trenchless directional drilling sewage pipeline as claimed in claim 3, wherein the finish paint is a thick paste type epoxy coal tar pitch anticorrosive paint.

6. The process for machining the long-distance trenchless directional drilling sewage pipeline according to claim 1, wherein the welding joints among the pipelines are detected by 100% ultrasonic waves.

7. The process for machining the long-distance trenchless directional drilling sewage pipeline according to claim 1, wherein the pull-in-situ ultraviolet curing method is used for curing the resin hose lining by ultraviolet light irradiation.

8. The process for machining the long-distance trenchless directional drilling sewage pipeline according to claim 7, wherein the pull-in-situ ultraviolet curing method is used for manufacturing a lining resin hose which is soaked in epoxy resin according to the requirement of the pipeline, a pad film is laid in the pipeline, the lining resin hose is pulled into the pipeline, the lining resin hose is expanded and tightly attached to the inner wall of the pipeline by using compressed air, the lining resin hose is hardened and molded by using ultraviolet light irradiation, and a layer of high-strength corrosion-resistant lining new pipe is formed in the pipeline.

9. The process of claim 8, wherein the pad membrane is placed at the bottom of the pipeline and covers at least 1/3 circumferences of the pipeline.

Technical Field

The invention relates to a pipeline processing technology, in particular to a processing technology of a long-distance trenchless directional drilling sewage pipeline.

Background

The Pudong sewage treatment plant around the Pudong new area of Shanghai city is built in 1982 and produced in 3 months of 1988, and occupies a floor area of about 30073m²Design capacity of 1.25 km³And d. According to the requirements of the action plan of the sixth round of environmental protection in three years in 2015-2017 of Shanghai city, the primary A standard of the pollutant discharge standard of urban sewage treatment plants (GB18918-2002) is comprehensively implemented by the upstream water-quasi-source protection area of Huangpu river and the existing sewage treatment plants in Hangzhou Bay. According to the current situation of the Zhou Pu sewage treatment plant, no land is expanded around for improving the sewage treatment scale and the tail water discharge standard, so the Zhou Pu sewage treatment plant is abandoned according to the plan. In addition, the existing municipal sewage pipe network in the region is saturated and has no capacity of receiving the part of sewage. Therefore, a new sewage main pipe is needed to be built, and a safe and reliable outlet is provided for the waste sewage of the Zhoupu sewage treatment plant. The newly-built sewage main pipe passes through a busy road section in an old city, the most difficult node is to pass through the existing river channel, buildings on two sides of the river channel invade a red line or a blue line of the road, and the existing sewage pipe has larger limitation when passing through important nodes in a long distance.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a processing technology for a long-distance trenchless directional drilling sewage pipeline.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides a sewage pipeline processing technology is bored to non-excavation orientation of long distance, adopts thick liquid type ring oxygen coal pitch anticorrosive paint to carry out anticorrosive treatment to the outer wall of pipeline, adopts welded connection between each pipeline, then creeps into pre-buried, sets up inside lining resin hose at the pipeline inside, utilizes pull-in normal position ultraviolet curing method to handle, accomplishes the processing to sewage pipeline.

The pipeline is a spiral seam automatic submerged arc welding steel pipe, a HDPE PE100 straight-wall pipe is generally adopted, the HDPE PE100 straight-wall pipe has good corrosion resistance, but the rigidity of the pipeline is insufficient, the pipeline is easy to be damaged under the external force, and the pipeline cannot be repaired after being damaged,the spiral seam automatic submerged arc welding steel pipe well solves the problems, and the used pipeline adopts the spiral seam automatic submerged arc welding steel pipe with DN800 wall thickness of 14mm and external diameter

As a preferred technical scheme, during the anticorrosion treatment, the outer wall of the pipeline is firstly coated with a primer, and then is coated with three layers of finish paint.

As a more preferable technical scheme, the primer is thick slurry type epoxy zinc-rich primer, and the finish paint is thick slurry type epoxy coal tar pitch anti-corrosion paint.

As a preferred technical scheme, the welding interfaces among all pipelines are detected by 100% of ultrasonic waves.

As a preferred technical scheme, when the pull-in type in-situ ultraviolet curing method is used for processing, the ultraviolet light is used for irradiating and curing the lining resin hose, and the specific process is as follows: the lining resin hose which is fully soaked with the epoxy resin is manufactured according to actual pipeline requirements, a cushion film is laid in the pipeline, the lining resin hose is pulled into the pipeline, the lining resin hose is expanded and tightly attached to the inner wall of the pipeline by utilizing compressed air, the lining resin hose is hardened and formed by utilizing ultraviolet light, a layer of high-strength corrosion-resistant lining new pipe is formed in the pipeline, and the lining new pipe obtained after solidification has good acid and alkali resistance, sufficient tensile resistance and bending resistance and sufficient flexibility so as to ensure that the lining resin hose can bear pressure. The cured photocurable resin material can reach 45MPa of bending strength and has good durability, corrosion resistance, tensile strength and crack resistance.

As a preferable technical scheme, the pad membrane is arranged at the bottom of the pipeline and at least covers the circumference of the pipeline 1/3.

Compared with the prior art, the invention has the following advantages:

1. the construction period is short: the 336m long-distance trenchless pipeline directional drilling construction time is 3 hours;

2. the influence on traffic is small: only the soil-entering section and the soil-discharging section need to occupy the road;

3. the anticorrosion effect is good: the inner wall of the pipeline is provided with an integrally formed ultraviolet light curing resin hose, so that the inner wall of the pipeline has stronger corrosion resistance;

4. the pipeline has strong capability of resisting external force damage: the outer wall is a spiral seam automatic submerged arc welding steel pipe, and the inner wall is an ultraviolet light curing resin hose, so that a novel composite pipe is formed, and the external force damage resistance of the pipeline is greatly improved.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.