炸药激发子波信号的记录与研究  

Record and study of exploded wavelet signal by explosive.

作　　者：汪恩华[1] 贺振华[1] 李庆忠[2] 

机构地区：[1]成都理工学院 [2]石油地球物理勘探局

出　　处：《石油地球物理勘探》2001年第3期353-363,共11页Oil Geophysical Prospecting

摘　　要：炸药激发是陆上地震勘探的主要激发方式 ,激发因素对地震 (尤其是高分辨率地震 )勘探显然是至关重要的。虽然已有诸多关于激发理论及参数选择方面的文献 ,但大多是在某种特定药型、药量条件下所作的分析 ,其结论不具广泛性。研究激发条件的目的是要获得理想的激发子波 ,但目前直接对激发子波进行观测并作分析的还不多。本文介绍了用不同药量的多种成型炸药在高速层中进行激发和观测的方法 ;对在弹性区形成的地震子波作了定性和定量分析 ,包括子波波形、频谱、能量与药量的关系及地震波在高速层中的衰减规律等 ;得到了一系列有意义的结论。Shooting by explosive is main exploded mode in land seismic exploration. The exploded factor is obviously vital to seismic exploration (especially to high-resolution seismology). Although there were many literatures about exploded theory and parameter selection, the analysis made in many cases is in a condition of certain explosive type and quantity, so the results are not generality. The aim studying exploded condition is to obtain ideal exploded wavelet, but there are a few methods that made observation and analysis directly to exploded wavelet. The paper introduced method for varied formed explosive with different quantity which is both exploded and observed in high speed layer, qualitatively and quantitatively analyzed acquired seismic wavelet formed in elastic zone, mainly including wavelet waveform character, spectrum, relation between seismic wavelet energy and quantity of explosive as well as rule of attenuation in a high speed layer etc, and it came to a series of meaningful conclusion.

关 键 词：成型炸药 地震子波 药量 爆速 高速层 陆上地震勘探 炸药激发 子波信号 记录 

分 类 号：P631.424[天文地球—地质矿产勘探]