Zong-Xian Zhang

Effects of Double-Primer Placement on Rock Fragmentation at Kevitsa Open Pit Mine

Abstract To address the lack of systematic production-scale evaluation of the effects of double-primer placement on blasting performance, this study presents a comparative analysis of two primer configurations. The double-primer placement consists of two primers positioned 2 m ab...

Static-dynamic triggering mechanisms of rockburst in straight-walled arch roadways under different principal stress orientations and impact disturbances

This study investigates how principal-stress orientation affects impact disturbance triggered rockburst around straight-walled arch roadways. Coupled static-dynamic loading tests were conducted on specimens containing a straight-walled arch opening with orientation angles of 0°,...