Cutting state monitoring methods and monitoring equipment of the ground in the high-pressure injection stirring method

摘要

PROBLEM TO BE SOLVED: To provide a method and a device for monitoring a cutting state of soil in a high pressure jet agitation method, capable of easily confirming the diameter of a soil improvement body which is about to be constructed by recognizing the cutting state of original ground by a solidification material jetted at high pressure in real time.;SOLUTION: The device for monitoring the cutting state of the soil in the high pressure jet agitation method includes: a plurality of erection pipes 5 inserted around an injection pipe 1; a plurality of sound collectors 6 installed inside the erection pipes 5 respectively, for monitoring sound of the solidification material jetted at high pressure from a jetting nozzle 1a at the distal end of the injection pipe 1 hitting the erection pipes 5; a hoisting device 8 for stepping up the sound collectors 6 linked with the step-up of the jetting nozzle 1a; a management device 13 for intensively managing data of the sound monitored by the sound collectors 6; and a recorder 14 for recording the data of the monitored sound.;COPYRIGHT: (C)2012,JPO&INPIT