纵波勘探中的炸药激发方式分析

Analysis of dynamite source pattern in compressional wave exploration

在野外采集工程中，地震波激发方式是影响地震记录品质和工程成本的主要因素之一。因此，寻找最佳的激发方式是野外施工单位关心的焦点。本文从弹性力学理论出发，结合一些日常生活中的感性认识，对炸药激发技术作了组会激发和长柱激发的具体分析与讨论，最后认为用炸药点源激发是纵波勘探工程的最佳激发方式，并提出梅花图形组合是模拟点源激发的有效方法。

Dynamite source pattern in seismic data acquisition is one of main factors influ-encing both quality and cost of seismic data. Optimum seismic source pattern is an essentia1 point which field geophysicists pay much attention to. Arrayed dynamitesource and slender cylindrical source are analysed respectively in terms of elastic mechanics and perceptual knowledge in field operation. Analyses lead to conclusions that dynamite point source is most suitable to compressional wave exploration, and that array source in plum flower shape is an effective pattern to produce point source effect.