杨茂森,陈永祥,郝润华

• 1:内蒙古自治区公安厅
• 2:中国矿业大学(北京)应急管理与安全工程学院
• 3:国家能源集团准能集团有限责任公司
• 4:鄂尔多斯市公安局

摘要(Abstract)：

大型露天煤矿高台阶深孔剥离爆破,具有爆破规模大、振动主频低、持续作用时间长等特点,分析评估爆破振动对临近建(构)筑物的影响对于保证施工安全十分重要。结合黑岱沟露天煤矿超高台阶爆破工程实际,采用现场爆破振动监测与回归分析的方法研究了露天矿爆破作用下临近建(构)筑物的爆破振动效应,并结合爆破安全规程对临近建(构)筑物的安全性进行评价。研究结果表明:现场爆破作用下,各方向振动速度衰减大小表现为X方向>Z方向>Y方向。其中,X方向爆破振动速度最大,对爆破振动效应起控制作用;本次爆破条件下,各监测点爆破振动频率较低,主要集中在3～6 Hz范围内,各监测点爆破振动持续时间较长,分布在7～9 s范围内;在不考虑后续爆破对结构造成累积破坏的前提下,各监测对象在本次爆破作用下均处于安全状态。

关键词(KeyWords)： 露天矿;爆破振动效应;振动速度;频率;持续时间

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 杨茂森,陈永祥,郝润华

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