Study on the Erosion Morphology of Cohesive Soil under the Vertical Impact of a High-Pressure Moving Water Jet

In the in situ leaching process of ionic rare earth ore, high-pressure moving water jet technology has been applied to improve floor leakage problems. However, it found that morphology erosion surface formed by a cannot be accurately predicted. The range an important influence on stability liquid collection engineering and rate resources, which is basis for design engineering. To study this, soil-breaking tests using jets Pingnan mine were conducted. influences pressure nozzle speed analysed. mechanism formation was revealed theory, method predicting geometry based proposed. results show that, 5~10 MPa, with increases decreases speed, geometric shape tends expand, these parameters have no effect morphological characteristics surface. process, distance. As becomes greater, degree attenuation at given also greater. Soil-breaking depth quadratic relationship 0.5 power function speed. self-similarity can divided into straight curved sections. Accordingly, empirical formula error less than 11%, provide reference applications.