一种低爆速炸药在地震勘探中的应用

The application of low-detonation velocity explosive in seismic exploration

1. 中国石化华东石油局第六物探大队,江苏南京 210009;2. 南京理工大学化工学院,江苏南京 210094

The Sixth Geophysical Prospecting Party of East China Bureau of Petroleum, SINOPEC, Nanjing 210009, China

针对表层含沙量高的地区地震波传播速度低的特点,研究了一种密度大、体积小、能量较高的低爆速炸药。 探讨了低爆速炸药的震源机理,介绍了低爆速炸药的制造方法和性能,并在下扬子地区(表层含沙量高)进行了 炸药性能试验。试验结果表明,低爆速炸药较之中、高爆速炸药及常规炸药与围岩有更好的匹配和耦合关系,因 而使地震记录的信噪比、分辨率都得到了提高。

low-detonation velocity explosive containing higher energy, which can be applied to epicenter exploration. The mechanism of epicenter-source exploration, the manufacture method and capability, the application experiment in geology, and comparison with the other kind of epicenter explosives are discussed. Being used for seismic exploration, it has better width of frequency chart and S/N, and improves the S/N and resolution of stratum profiles.