Year1
- 规格：
- 32*3
- 规格：
- 40*3
- 规格：
- 110*7
It is a trenchless construction method, a pipeline burial construction technology that requires no excavation or less excavation.
Trenchless engineering technology has completely solved the problems of damage to urban buildings and blockage of road traffic during pipeline burial construction, highlighting its advantages in stabilizing the soil layer and protecting the environment. This is very important for cities with heavy traffic, dense population, numerous ground buildings, and complex underground pipelines. It will create a clean, comfortable and beautiful environment for the city.
Trenchless technology is a term that has been used frequently in recent years. It involves the use of less excavation, that is, working wells and receiving wells need to be excavated, and no excavation, that is, no excavation of pipelines. To lay or replace underground pipelines, jacking pipe diameter. The pipes to be buried are pushed into the soil through the working well. The pipes in a working well can travel underground for more than 1 meter, and can also travel in curves to bypass some underground pipelines or obstacles.
Its technical point is to correct the deviation of the pipe extending underground. It is especially suitable for trenchless laying of large and medium-sized pipes. It has comprehensive functions of economy, efficiency and environmental protection. The advantage of this technology is that it does not excavate the ground or demolish it, does not damage the ground buildings, does not affect traffic, does not damage the environment, and the construction is not affected by the climate and environment, does not affect the step deformation of the pipeline, is time-saving, efficient, safe, and has a low overall cost.
This technology is widely used in the non-excavation laying of various pipelines such as urban underground water supply and drainage pipelines, natural gas and oil pipelines, and communication cables in economically developed coastal areas of my country. It can cross roads, railways, bridges, mountains, rivers, straits and any buildings on the ground. Using this technology for construction can save a lot of land acquisition and demolition costs, reduce environmental pollution and road blockage, and has significant economic and social benefits.
, development and working principle
Pipe jacking construction is an underground pipeline construction method developed after shield tunneling construction. It does not require excavation of the surface layer and can cross roads, railways, rivers, Ground buildings, underground structures and various underground pipelines, etc. Pipe jacking construction relies on the thrust of the main jacking cylinder
and the relay room between pipes to push the tool pipe or excavator
from the working well through the soil layer to the receiving well for lifting. At the same time, the pipe immediately behind the tool pipe or boring machine is buried between the two wells, in order to realize the construction method of laying underground pipes without excavation.
, Classification
Currently, there are three most popular balance theories in pipe jacking construction
Air pressure balance, mud-water balance and earth pressure balance theory.
The most prominent feature of pipe jacking construction is the issue of adaptability. According to different geological conditions, construction conditions and design requirements, the appropriate pipe jacking construction method should be selected. How to correctly select the pipe jacking machine and supporting auxiliary equipment will be very critical for pipe jacking construction
Tools
As part of the ejection system, the ejection tube is also called the cylinder and is a hollow ejection pin.
Pipe jacking
Adopts expanded adhesive connection, easy to install and operate.
Good insulation performance.
It has good impact resistance and can be buried underground for use.
It has acid and alkali resistance and good aging resistance, and can be used in harsh environments.
The ring has good stiffness and high strength.
WhatsApp
