延迟炸药震源高效安全性研究

通过理论和试验对延迟炸药震源爆炸产生的地震波主频、能量和在近地表面产生的振动等方面进行了分析. 结果表明延迟时间对于延迟炸药震源的叠加效果影响最大,电子雷管精度高,非常适用于延迟炸药震源的设计. 延迟炸药震源与普通炸药震源相比,产生的地震波能量差别不大,但是主频提高10%~20%,高频能量高,主频更宽. 爆炸所引起的近地表面的振动比普通炸药震源小50%以上,安全性非常高. 延迟时间合适的延迟炸药震源与普通的炸药震源相比,其主频高、频带宽、引起近地表面振动小,是一种高效安全的地震勘探炸药震源,非常适合目前高分辨率且对安全性要求较高的地震勘探中.

The Application of Effective and Safe Delay Dynamite Source in the High Petroleum Exploration

Based on the theory and experiment, blast seismic wave frequency, energy and vibration near the ground surface of delay dynamite source were analyzed with the following conclusions: delay time has the greatest influence to the superposition effect of delay explosive source, and high precision electronic detonator is very suitable for delay explosive source design. Compared delay dynamite source with ordinary explosive source, the differences of the seismic wave energy between them are not big, but the dominant frequency increases 10%~20%, and high frequency energy is high, and it has the wider frequency. The vibration near the surface caused by explosion is smaller than normal dynamite source by more than 50%, so the security is very high. To sum up, compared with ordinary dynamite source, delay dynamite source with appropriate delay time has higher predominant frequency and wider frequency bandwidth, The vibration near the surface caused by explosion is smaller by 50%, so the explosive source seismic exploration is effective and safe, and suitable for the high resolution and higher requirements for security of seismic exploration.