CAJ | 학술논문

露天采场边坡对爆源不高于坡脚处的爆破震动存在放大作用。通过对露天采场高程放大效应机理分析，认为萨道夫斯基公式难以准确描述采场内爆破震动衰减规律；通过引入高程因素对萨道夫斯基公式进行修正，运用最小二乘法原理进行多元线性回归分析，建立震动衰减模型。对司家营铁矿Ⅱ采场中深孔爆破进行现场监测，验证了高程放大效应的存在。回归计算结果表明，修正的萨道夫斯基公式更具科学性。
로천채장변파대폭원불고우파각처적폭파진동존재방대작용。통과대로천채장고정방대효응궤리분석，인위살도부사기공식난이준학묘술채장내폭파진동쇠감규률；통과인입고정인소대살도부사기공식진행수정，운용최소이승법원리진행다원선성회귀분석，건립진동쇠감모형。대사가영철광Ⅱ채장중심공폭파진행현장감측，험증료고정방대효응적존재。회귀계산결과표명，수정적살도부사기공식경구과학성。
The open pit slope can amplify blasting vibration whose explosion source is not higher than the toe of slope.Based on the analysis of the mechanism of elevation amplification effect in open pit,the paper considers that Sa-dove formula has difficulty in accurately describing blasting vibration attenuation law in stope.So a modified Sadove formula with the introduction of the elevation factors and a multiple linear regression analysis performed by the princi-ple of least square method combine to establish the attenuation model.The existence of elevation amplification effect is verified by monitoring medium-long hole blasting in No.Ⅱ stope of Sijiaying Iron Mine.The regression calculation re-sults prove the modified Sadove formula to be more scientific.