Non-excavated orientation is also called dragging pipe or drawing pipe construction due to the application ofdrilling technology. This is a new construction process by combining directional drilling technology used bypetroleum industry with traditional pipeline construction method. It has been widely applied to various undergroundpipeline constructions in fields of civil planning,telecommunication, electricity, etc in recent years.
Non-excavated orientation and directional drilling construction is to place directional drills on the ground.Without excavating soil, use detection instruments toguide, control the direction of bore of drill rod, and meetdesign axis requirements. Through multiple-chambering, pipeline will be pulled back in position, so that pipelinelaying can be finished.