爆破2026，Vol.43Issue(2)：160-169,178,11.DOI:10.3963/j.issn.1001-487X.2026.02.016
基于S-ALE算法的巷道孤石光面爆破围岩损伤规律研究
Study on Surrounding Rock Damage in Roadway Smooth Blasting Using S-ALE Algorithm
摘要
Abstract
Isolated boulders in roadways present substantial safety risks in mining operations.This research in-vestigates the efficacy of blasting techniques for isolated boulder removal and their influence on adjacent rock dam-age,utilizing smooth blasting principles and the innovative S-ALE computational method.A precisely scaled 3D nu-merical model was developed based on a roadway project in a Yunnan underground metal mine to comprehensively examine how surrounding rock damage varies with different linear charge densities and borehole spacing configura-tions during smooth blasting of isolated boulders.The results indicate that:(1)surrounding rock damage follows an"inverse S-shaped"attenuation pattern with increasing distance from the blast center;(2)maximum damage depth demonstrates linear growth with higher linear charge density but shows fluctuating behavior with borehole spacing var-iations,peaking at 0.36 m and reaching minimum at 0.40 m spacing;(3)rock damage exhibits substantially greater sensitivity to linear change density adjustments compared to borehole spacing modifications.The optimal parameters balancing blasting efficiency and explosive consumption are determined to be a linear charge density of 0.30 kg/m(decoupling coefficient 1.43)and a borehole spacing of 0.40 m.The extensive free surface of isolated boulders re-sults in a significantly shallower maximum damage depth than with conventional smooth blasting,consistent with ob-served reductions in plastic strain both perpendicular to and along the tunnel contour toward the free face.These re-sults offer practical technical references for field applications.关键词
线装药密度/炮孔间距/围岩损伤/数值模拟/S-ALE算法Key words
linear charge density/blasthole spacing/surrounding rock damage/numerical modeling/S-ALE algorithm分类
数理科学引用本文复制引用
黄永辉,荆蕊,张译尹,段强坤,曹永炜..基于S-ALE算法的巷道孤石光面爆破围岩损伤规律研究[J].爆破,2026,43(2):160-169,178,11.基金项目
国家自然科学基金(52164009、52574148) National Natural Science Foundation of China(52164009,52574148) （52164009、52574148）
