摘要
炸药由于具有良好的脉冲特性及高能量的特点而作为地震勘探中的主要震源.就炸药本身来说,在地震勘探中药量、井深等参数的选取对激发能量和激发频率有很大的影响.为此,本文运用炸药爆炸理论,从炸药作功角度来加以论述,并通过理论和实验分析得出选取一个最佳的药量和井深激发,既能提高炸药作功能力,又能增强激发能量,从而激发强能量的高频震源子波,达到指导野外地震采集和节约经济成本的目的.
Dynamite has been main seismic-sources with having good pulse characteristic and high-energy for a long time. As far as dynamite itself, the selection of charge size and well depth has the much effect on excitation energy and frequency in the seismic-prospecting. For this object, the paper discusses the problem from the angle of doing-work mechanism of dynamite explosion by using the theory of dynamite explosion. Theoretical analyses and field experiments show that the selection of most appropriate charge high-energy dynamite and well depth can both improve the dynamite work capability and enhance the excitation energy, therefore beneficial to generating high-frequency soure wavelet with relatively high energy and to directing field-seismic gathering and to minimizing economic expenditure.
出处
《地球物理学进展》
CSCD
2003年第4期724-728,共5页
Progress in Geophysics
基金
教育部博士点基金项目(20030183056)资助.
关键词
地震勘探
炸药量
井深
激发能量
激发频率
炸药作功
高频子波
seismic exploration, charge size, well depth, charge energy, charge frequency, dynamite works, high frequency wavelet
