摘要
爆破振动是引起地下矿山岩体失稳的重要原因,掌握爆破振动传播特性,有效控制爆破振动危害,对矿山安全高效生产具有重要意义。为研究金山金矿湾家坞矿区中深孔爆破对采场周边构筑物的影响,开展爆破振动测试工作。对采集的爆破振动信号,从爆破振动强度、频率、时间等方面进行综合分析,并建立湾家坞矿区爆破振动强度的传播模型。确定了中深孔爆破振动影响范围,获取了允许的最大单段药量计算方法,优化了排间微差起爆时间,使中深孔爆破参数更为合理,确保采场周边运输巷道、硐室等构筑物岩体的稳定性,进而实现矿山绿色、安全、高效的生产目标。
Blasting vibration is a key factor to induce rock mass instability in underground mines,it is important to master the propagation characteristics of blasting vibration,and effectively control the damage of blasting vibration,which is meaningful to safe and efficient production.In order to study the influence of medium-long hole blasting on the structures around the stope in Wanjiawu mining area of Jinshan gold mine,the blasting vibration test was carried out.The collected blasting vibration signals are comprehensively analyzed from the aspects of blasting vibration intensity,frequency,and time,and the propagation model of blasting vibration intensity and frequency in the mining area is established.On this basis,the vibration influence range of medium-long hole blasting is determined,the calculation method of the maximum allowable single dose was obtained,and the micro-difference initiation time between rows was optimized.The parameters of medium-long hole blasting are more reasonable,and ensure the stability of the rock mass and other structures around the stope,so as to realize the green,safe,and efficient production goal of the mine.
作者
汪志国
贾旭峰
赵龙
李政伟
Wang Zhiguo;Jia Xufeng;Zhao Long;Li Zhengwei(Changchun Gold Research Institute Co.,Ltd.;Jiangxi Jinshan Mining Co.,Ltd.of China Gold Group)
出处
《黄金》
CAS
2023年第9期36-40,共5页
Gold
基金
国家重点研发计划项目(2022YFC2905003)。
关键词
中深孔爆破
爆破振动
传播特性
参数优化
安全控制
medium-long hole blasting
blast vibration
propagation characteristic
parameter optimization
safety control
