| 摘要 |
The present disclosure is directed toward systems and methods for trenchless installation of a conduit. According to the examples herein, a conduit may be installed underground using the conduit itself for the drilling of the bore hole needed to accommodate the conduit. The conduit may be installed after a drill string has been positioned in the ground to define a pilot hole. After the pilot hole is defined and while the drill string used to define the pilot hole remains underground, the conduit may be driven underground following the path defined by the drill string. A driving force may be applied to the conduit and cutting member attached to a leading end of the conduit to cause the conduit to advance underground while the drill string, a portion of which may be interior to the conduit, remains underground. In this manner disadvantages associated with back reaming and/or pulling or dragging of the conduit underground may be avoided, as the conduit may itself be used for enlarging the pilot hole to a size sufficient to accommodate the conduit. |
