Effect of Operating Parameters on Rock-Breaking and Hole-Forming Characteristics of High-Pressure Abrasive Water Jet

Xin Cheng; Fan Zhang; QianXi Wang; JianPing Guo

doi:10.63313/AERpc.9078

Authors

Xin Cheng School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, China Author
Fan Zhang School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, China Author
QianXi Wang School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, China Author
JianPing Guo School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, China Author

DOI:

https://doi.org/10.63313/AERpc.9078

Keywords:

High-pressure abrasive water jet, Rock breaking and hole forming, Abrasive particle size, Jet pressure, Standoff distance

Abstract

High-pressure abrasive water jet (AWJ) technology offers a promising alternative to traditional mechanical drilling in coal and geotechnical engineering. This study investigates the rock-breaking and hole-forming characteristics of AWJs on typical sandstone (70 MPa) using a custom-built experimental system. Single-factor experiments were conducted to evaluate the effects of abrasive particle size, jet pressure, and standoff distance. Results indicate that hole depth and diameter peak at an optimal abrasive size of 60 mesh. Increasing jet pressure (20–50 MPa) significantly enhances both penetration depth and hole diameter. Conversely, increasing the standoff distance (30–60 mm) enlarges the hole diameter but reduces the penetration depth. These findings provide a reliable basis for optimizing AWJ drilling parameters in engineering applications.

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