The underlying mechanism of pre-vibration effect is also discussed, which is thought to be useful to improve the microstructure of sand.
对振冲法的预振效应进行了分析，认为预振效应的机理是经过振动处理后，砂土地基的微观结构得到了优化。
Based on association analysis with gray system theory, the multi-factor gray association analysis has been carried out for analysing the vibration effect of pre-splitting blasting in a mine.
引入灰色系统理论的关联分析方法，对某矿山预裂爆破的震动效应进行了多因素灰色关联分析。
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