Effect of abrasive waterjet parameters on rock removal

Rock excavation (removal) tests are performed with effective parameters using an abrasive waterjet. For verification of the field rock excavation capabilities, the removal performance and level of efficiency are analyzed for hard granite rock in terms of the water pressure, exposure time of the jet, and the standoff distance. In particular, experimental tests are performed with a long standoff distance required condition in the real excavation field. The rock removal performance level changes according to the rock properties. In this study, various rock specimens are used and P-wave velocities are measured in order to determine the correlation between the removal performance and the P-wave velocity. As a result of the experimental study, the effect of waterjet parameters on rock removal is analyzed.

keywords: Abrasive waterjet, waterjet parameter, rock excavation, standoff distance, P-wave velocity, 연마재 워터젯, 워터젯 변수, 암반굴착, 이격거리, P파 속도

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Article Contents

Vol.14 No.4

Effect of abrasive waterjet parameters on rock removal

Abstract

Reference

(사)한국터널지하공간학회