Foundation pile driving method - using drill suspended from mobile lift-crane via which concrete binding agent is injected

摘要

The foundation pile is driven through subsoil into compact soil, using an auger type drill with provision for injecting of a binding agent. Auger type drill (1) is suspended from a mobile lift-crane (2). Drill is driven through loose subsoil (11) into solid soil layer (3). Through injection needle (4) which is axially slidable in the drill, and using hose (18) and hydraulic cylinder unit (5), a concrete binding agent is injected, to form a broad concrete block (8) for pile support.