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《Journal of University of Science and Technology Beijing》 2008-06
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Water jet soil reaming technology and its influencing factors

MA Fei1),GAO Guohua1),WANG Pinghui2),WANG Tao1),ZHANG Miao1)1) School of Civil and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China2) School of Management,Tianjin University,Tianjin 300072,China  
Water jet soil reaming parameters were analyzed based on the water jet theory and the soil mechanical theory.Some relationships between water-jet parameters and soil parameters were established.The effects of water jet parameters and drill motion parameters on the soil reaming were investigated by an indoor test.The experimental results show that it is necessary to increase water-jet power for enhancing the soil reaming effect.Increasing the water jet flow quantity has more obvious effect on the reaming than increasing the water jet pressure while the water jet impact force exceeds the soil critical breaking force.Reasonable matching the rotation speed and vertical speed of the drill pipe has more favorable effect on the soil reaming.It is feasible through engineering application that the water jet soil reaming technology is applied to making multi-ring type anchors in engineering,and the bearing capacity of the anchors is significantly improved.
【Fund】: 新世纪优秀人才支持计划资助项目(No.NCET-07-0068)
【CateGory Index】: TP69
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