I. Product Introduction

Fiberglass reinforced plastic sand pipe jacking is a newly developed pipeline product in the field of water supply and drainage. It can complete the construction and installation of underground pipelines without excavation. It can directly cross highways, railways, rivers and other buildings. It has good corrosion resistance, light weight, smooth inner wall, large flow and other characteristics. It has become the preferred pipeline material in large and medium-sized urban pipeline projects.

II. Product Characteristics

1. No trenching is needed for the laying of the pipeline, and the construction progress is fast.

2. Easy to correct deviation and long jacking distance in jacking process

3. Smooth appearance, light weight and small jacking resistance; FRP duct surface is not easy to deposit and will not cause pipe lock-up phenomenon.

4. The inner wall of FRP pipe jacking is very smooth and its hydraulic fluid characteristics are good.

5. It has excellent waterproof, impermeability and chemical corrosion resistance.

6. It can operate in high temperature for a long time and keep good mechanical properties.

7. The environmental temperature range of products is wide, generally - 40-70 C. FRP ducts can resist long-term sunlight exposure.

8. It has excellent wear resistance, and the medium conveyed will not cause damage to the inner wall of the pipeline.

9. FRP pipe jacking has low thermal conductivity and good thermal insulation performance.

10. Non-toxic and non-secondary pollution

11. Small specific gravity, light weight, convenient loading and unloading, easy installation

12. FRP pipe jacking design has high safety factor, long service life and ensures 50 years service life.

13. FRP pipe jacking operation and maintenance costs are low, corrosion resistance is superior, without any maintenance.

III. Construction Characteristics

1. Light weight (1/10 of concrete pipeline), low requirement for foundation, low requirement for hoisting and pipe-lowering equipment, and convenient construction.

2. Because of the small settlement and the small jacking force, it is easy to rectify the deviation of the pipeline.

3. The inner wall is smooth and the flow rate is large. When the flow rate is determined, a smaller diameter can be used to reduce the comprehensive cost of the project.

4. The exterior is smooth, the jacking force is small, and the cohesion of soil has little effect on FRP pipe jacking. There is no pipe holding and dead pipe phenomenon. The single jacking length is long, and the jacking equipment is low.

IV. Connection Mode

Embedded steel sleeve ring is used to connect and locate the pipe segments. When jacking, the pipe is sealed with FRP resin mouth. After the two pipes are docked, the water-sealing effect is achieved. A platform is provided at both ends of pipe jacking so that the outer diameter of the steel jacket ring behind the upper end of the steel jacket ring is the same as that of the pipe jacking itself. The steel sleeve ring plays a positioning role and increases the ability of resisting uneven settlement. The resin orifice is sealed, and the two pipes can seal water after butting. A platform is provided at both ends of pipe jacking so that the outer diameter of the steel jacket ring behind the upper end of the steel jacket ring is the same as that of the pipe jacking itself. Steel sleeve rings play a positioning role, and increase the ability of partial anti-uneven settlement.

V. Scope of application

1. Water diversion and water supply projects

2. Petroleum and Chemical Engineering

3. Construction Engineering

4. Sewage Discharge Project

5. Electricity, Metallurgy and Environmental Protection Engineering