露天矿高陡边坡采场爆破振动监测与分析  

Monitoring and analysis of blasting vibration in high and steep slope of open-pit mine

作　　者：王文才 曹宇 赵永岗 WANG Wencai;CAO Yu;ZHAO Yonggang(Mining Research Institute,Inner Mongolia University of Science and Technology,Baotou 014010,China;Baiyunebo Iron Mine,Baotou Steel(Group)Co.,Baotou 014080,China)

机构地区：[1]内蒙古科技大学矿业研究院,内蒙古包头014010 [2]包头钢铁公司集团白云铁矿,内蒙古包头014080

出　　处：《内蒙古科技大学学报》2022年第2期140-144,共5页Journal of Inner Mongolia University of Science and Technology

基　　金：内蒙古自治区自然科学基金资助项目(2020MS05010);包头市科技计划基金资助项目(2019Z3004-8);包钢(集团)公司白云鄂博铁矿研究基金资助项目(SA010020190903B001)资助。

摘　　要：采用TC-4850型爆破监测仪对内蒙某露天矿进行多次爆破振动监测,并通过一元及二元回归得出基于该矿的径向、切向和垂向振动速度预测公式.分析表明,二元回归的采场爆破振速传播公式较一元回归的精度高,这说明爆破振速不是完全由爆心距决定的,其也受到了高程参数一定程度的影响.高程对爆破振动速度的影响垂向最大,切向次之,径向最小.采场爆破振速随着传播距离的增大而衰减,但高程对爆破振速具有一定的放大效应.通常前者占主导地位,因而一般不表现出高程的放大效应;只有在后者占主导地位时,才表现出高程的放大效应,即高程放大效应是振速传播一定范围内局部效应.The TC-4850 blasting monitoring instrument was used to monitor the blasting vibration of an open-pit mine in Inner Mongolia for many times.The prediction formulas of radial,tangential and vertical vibration velocity based on the mine were obtained through unitary and binary regression.The analysis shows that the accuracy of the two-factor regression is higher than that of the one-factor regression,indicating that the blasting velocity is not completely determined by the distance from the blasting center,and is also affected by the elevation parameters to a certain extent.The effect of elevation on blasting vibration velocity is the largest in vertical direction,the second in tangential direction and the least in radial direction.The vibration velocity of stope blasting decreases with the increase of propagation distance,but the elevation has a certain amplification effect on the vibration velocity of stope blasting.Generally,the former is dominant,so it does not show the amplification effect of elevation.The elevation amplification effect occurs only when the latter is dominant,that is,the elevation amplification effect is a local effect within a certain range of vibration velocity propagation.

关 键 词：露天矿 高陡边坡 爆破振动 传播规律 

分 类 号：TD854[矿业工程—金属矿开采]