论文部分内容阅读
气枪震源是一种新兴、环保、绿色的人工震源,在区域尺度深部探测中有重要的应用前景。本文通过实验模拟研究了用于深部探测的大容量气枪震源,主要工作为:(1)根据陆上气枪实验分析了大容量气枪震源的特征;(2)采用自由气泡振荡理论模拟气枪信号,探讨深部探测中增强气泡效应从而增大气枪低频部分能量的方法;(3)研究气枪容量、工作压力和沉放深度等对单枪信号的影响及枪阵激发时刻和气枪间距对枪阵信号的影响,指导深部探测中气枪震源工作参数的选择;(4)研究不同类型水底对反射透射系数的影响,其结果对于选择合适的场地条件有指导意义。
Air gun source is a new, environmentally friendly, green artificial source, which has important application prospect in the deep exploration of regional scale. The main work of this paper is as follows: (1) The characteristics of the large-capacity airgun source are analyzed based on the land-based airgun experiment; (2) The airgun signal is modeled by the free-air bubble oscillation theory, (3) To study the effect of air gun capacity, working pressure and depth of sinking on the signal of single gun and the influence of gun firing time and air gun spacing on gun array signal (4) To study the effect of different types of bottom on the reflection and transmission coefficient, the results of which are instructive for the selection of appropriate site conditions.