Development of Pile-Extractor Machine of Water Jet
A Pile-Extractor machine was developed based on the theory of water jet,which was applied in small gravel,sand and soft soil.It consists of four parts:Pile-Extractor component,water-supply system,suspender structure and crane.The experimental results show that it took fifteen minutes all so to extract one precast concrete pipe pile of 15 meters long and 0.5m in diameter.
Bo Zhao, Yidu Zhang, Guanglin Wang, Hai Zhang, Jianbin Zhang and Feng Jiao
L. F. Wu et al., "Development of Pile-Extractor Machine of Water Jet", Applied Mechanics and Materials, Vol. 42, pp. 289-293, 2011