| 摘要 |
<p>A fluid-operated self-propelled subsoil penetrating tool (30) of the type including an elongated housing member (41) having a penetrating nose portion (34) capable of ejecting a jet of liquid under high pressure to break up and disrupt the subsoil adjacent such nose portion followed by a two-component hammering (36) of such soil to displace and compact same as the tool advances. Remotely-operated steering mechanism control the path of the tool (30) while remotely-read instruments (50) denote the position, depth, direction and attitude of the tool. A trailing unbilical cord (42) provides all motive and operational fluids and electrical power while transmitting instructions and data between the tool and the remote control station. A unique internal structure (226) reduces the rotation of the tool as it advances and provides for the reverse movement of the tool and electrical supplies through the bore created by the movement of the tool through the subsoil.</p> |
