Brief introduction of trenchless

Trenchless drilling refers to the new construction technology of laying, replacing and repairing various underground pipelines by using various geotechnical drilling equipment and technical means under the condition of excavating a very small part of the surface (generally referring to the excavation of a small area at the entrance), which will not hinder traffic, destroy green space and vegetation, affect the normal life and work order of shops, hospitals, schools and residents, and solve the interference of traditional excavation construction on residents' life, traffic and environment.