以青岛市地铁2号线一期工程土建一标04工区风道侧穿建筑为工程背景,为降低浅埋爆破振动有害效应,保护侧方建筑物,对三种不同爆破方案进行对比研究,现场监测与分析结果表明:1)大直径中空孔直眼掏槽结合短进尺可以有效降低振速,垂直方向减振最明显(达到70.7%);2)浅埋爆破地表三轴方向振速中,工作面正上方侧面(距工作面7.5m)垂直振速大于水平振速的概率占70%~80%;3)在振速要求苛刻的情况下(≤0.5cm/s),随着爆破进尺的减少,炸药总消耗虽然减少,但炸药单耗增加。就本文实践而言,进尺由1m降至0.5m后,总炸药消耗减少了32.6%,炸药单耗却增加了33.3%。 Based on the engineering background of the wind tunnel side-by-side building of No.1 Geotechnical Project of Qingdao Metro Line 2 civil engineering construction, in order to reduce the detrimental effect of shallow blasting vibration and protect the lateral buildings, three different blasting schemes were compared and studied. The results of monitoring and analysis show that: 1) Large-diameter hollow hole with straight cut and short-cut ruler can effectively reduce the vibration velocity and the vertical vibration damping is the most obvious (up to 70.7%); 2) In the three- The probability that the vertical vibration velocity is greater than the horizontal vibration velocity is 70% ~ 80% just above the working face (7.5m away from the working face); 3) When the vibration speed is demanding (≤0.5cm / s) The total explosives consumption decreased, but the explosive unit consumption increased. For the purposes of this paper, the total explosive consumption decreased by 32.6% and the explosive unit consumption increased by 33.3% after the footage was reduced from 1m to 0.5m.