Analysis of safety effect on explosive in loaded cavern under the surface blasting
In order to ensure the safety of explosive charged in underground cavern during the transition of opencast-underground combined mining, the safety effect of charged explosive under the surface blasting is analyzed by field measurement, theoretical analysis and numerical simulation from the aspects of heat sensitivity, mechanical sensitivity, detonation sensitivity, shock sensitivity.The software ANSYS/ LS-DYNA was applied to simulate and assess the influence of surface blasting seismic wave on the caverns.Based on the seismic wave data collected from IDTS3850, Sadovs formula was used and the waves declination of surface blasting vibration in vertical direction was concluded.The results show that the heat induced from surface blasting is not enough to trigger the loaded explosive, blasting vibration wave cannot make the underground caverns collapse, the pressure from blasting vibration wave reaching the caverns is not strong enough to detonate the explosive.
D.Zhou Z.Y.Tan Z.J.Huang Z.Q.Xie
School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing Yongping Copper Mine of Jiangxi Copper Company Limited, Shangrao, China
国际会议
The 3rd ISRM Young Scholars Symposium on Rock Mechanics(第三届国际岩石力学青年学者论坛)
北京
英文
663-667
2014-11-08（万方平台首次上网日期，不代表论文的发表时间）