中国科技核心期刊
美国化学文摘社(CAS)数据库
美国EBSCO学术数据库
日本科学技术振兴机构数据库(JST)
辛鹏飞|关福晨|郝春晖|谷思燚|张鑫
Xin Pengfei¹, Guan Fuchen², ³, Hao Chunhui², Gu Siyi², Zhang Xin²
为研究露天矿山深孔爆破装药结构与孔内延期对爆破振动的影响,基于萨道夫斯基公式,应用Matlab软件对连续装药结构的多级台阶质点振速峰值进行数据拟合,得出3个方向的质点振速峰值衰减公式。分析结果表明:竖直方向质点振速峰值衰减最快,水平方向接近;二级台阶的水平方向质点振速峰值稍大于竖直方向,与高程放大效应有关。经过对比间隔装药孔内延期结构分析得知,延期时间设置在15ms与25 ms时,对降低爆破振动的效果明显,可为类似工程项目施工提供参考依据。
To investigate the influence of charge structure and in-hole delay on blasting vibration in open-pit long-hole blasting, the Sadovsky formula was applied with Matlab software to fit peak particle velocity (PPV) data from multi-level benches under continuous charge structures. Attenuation formulas for PPV in 3 directions were derived. Analysis reveals that vertical PPV attenuates fastest, while horizontal PPV exhibits similar trends. At secondary benches. horizontal PPV slightly exceeds vertical PPV, attributed to elevation amplification effects. Comparative analysis of in-hole delay structures in interval charge demonstrates that delay times of 15 ms and 25 ms significantly reduce blasting vibration, providing practical references for similar engineering projects.