摘要
为了保证矿山安全生产、提高生产效益,采用EXP3850爆破振动信号记录仪对爆破振动进行测试,测点布置在出矿穿脉上。爆破振动测试表明,井下爆破产生的振动信号成分非常复杂。基于爆破振动监测数据,在考虑高程差影响的条件下对巷道顶板和边帮质点振动速度进行回归,确立振动衰减规律。对等药药量不同距离的振动信号进行时频分析,得出距离对频率和PPV的影响,为类似矿山提供参考。
In order to guarantee the production security and improve production efficiency, blasting vibration test is necessary. EXP3850 vibration monitor was used and the measure points were fixed on ore wear clock. The signals produced in the blasting of the underground is extremely complex. On the basis of the monitoring data ,rule of vibration attenuation is established by carrying out regression analysis on particle vibration velocity of roadway roof and slope wall under influence of height difference. Through time-frequency analysis of vibration sign on different distance after some detonator dose blasting, it gains the relation between distance, frequency and PPV which provides reference for similar mines.
出处
《爆破》
CSCD
2008年第2期77-81,共5页
Blasting
关键词
爆破振动
振动监测
回归分析
时频分析
explosion vibration
vibration monitoring
regression analysis
time-frequency analysis
