SLIME TREATMENT METHOD IN CAST-IN-PLACE PILE CONSTRUCTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a slime treatment device in a cast-in-place pile construction method and a method thereof, capable of efficiently removing slime by coping with both of delivery time of requiring operability and winding time of requiring large hoisting force.;SOLUTION: A slime treatment device is basically provided in a cast-in-place pile construction method for controlling in two stages of low pressure L when delivering F a mud lifting hose 30 caused by a descent of an underwater sand pump 100 into the underground hole and high pressure H when winding W of the underwater sand pump 100 in the underground hole, due to separating an installation place of the slime treatment device 1 by a constant distance from the muddy water surface of the underground hole, since the depth of the excavating underground hole is deep, the underground hole is excavated underground, or the slime treatment device 1 is installed in a place having a constant distance from an opening part of the underground hole and the muddy water surface.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT