What Does Guided Boring Method Mean?
Guided boring is a method for the installation of pipes, conduits and cables using a surface-launched drilling rig. A pilot bore is drilled using a rotating drill string and is then enlarged by a back reamer to the size required for the product pipe. Guided boring is a technique for installing pipes underground along a very specific trajectory. This method involves the controlled installation of hollow tubes on a specific line and gradient. The drilling path is highly controlled and as such it is used in applications where accuracy is very important.
Also referred to as pilot tube boring.
Trenchlesspedia Explains Guided Boring Method
Guided boring involves the use of a guidance system including a theodolite, camera and LED target. This target relays critical information about the position of the head and needed direction to the drill operator who can make adjustments on the control panel. Initially, pilot tubes were designed to install small diameter piping but recent applications involve enlarging the pilot bore and the installation of larger diameter piping. The nature of the accuracy of the guidance system, and the control over the installation route, makes this technique popular in applications where there is little margin for error.