ABRASIVE WATER JET METHOD AND ABRASIVE WATER JET NOZZLE TO BE USED FOR THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an abrasive water jet method for stably supplying the abrasive at a low cost and having the excellent performance such as the excavating performance, and to provide an abrasive water jet nozzle to be used for the same.;SOLUTION: When the high-pressure water 8 injected from a high-pressure water injection nozzle 5 fitted in a nozzle head 1 passes through a mixer part 6, a negative pressure is generated in the mixer part 6 by the ejector effect of the high-pressure water, and the muddy water in the periphery is sucked into the mixer part 6 through a muddy water intake port 4, and the high- pressure water 8 is contaminated with the mud grains contained in the sucked muddy water as the abrasive, and injected as the abrasive water jet 9 from a mixing nozzle 2.;COPYRIGHT: (C)2003,JPO