The advantages of the pipe shed construction method, compared to the previous advanced pre-supporting methods, are evident, mainly reflected in the following aspects:
The steel pipes used in the pipe shed construction method exhibit high rigidity and strength, with larger diameters, capable of bearing significant upper loads.
2. The grouting method of the pipe shed construction allows the slurry to spread along the gaps around the soil mass surrounding the pipe shed steel tubes, thereby both reinforcing the soil mass and providing water-stop functions.
3. The steel pipes laid using the pipe shed construction method are of considerable length. Currently, the length of the pipe shed can exceed 100 meters, significantly reducing the number of pre-supporting cycles and accelerating the construction progress.
4. The pipe shed construction method can control the trajectory line of the pipe shed steel tubes using a guidance instrument, ensuring the steel tubes are laid according to design requirements. This is beneficial for controlling the excavation volume during tunnel construction and reducing construction costs.
5. The new technology allows for the construction of hundreds of meters of pipe sheds in thin strata in a single operation, with high precision.
6. The pipe shield construction method utilizes high-power horizontal directional drilling machines, resulting in higher construction efficiency and significantly reducing the auxiliary time during tunnel excavation, thus improving overall construction productivity.






