论文部分内容阅读
前言国外近几年研制出一种用打夯机作震源的新方法,称为MINI—SOSIE的小型震源勘探方法,其特点是震源本身重量轻,操作灵活方便,配上专用的仪器可进行浅层高分辨率的反射地震勘探。这种勘探方法是在一个足够长的时间里,震源无规律地撞击地面,记录仪器根据安装在震源底板上的检波器(或称底板检波器)记录的每次撞击时间,进行前移迭加采集,最终得到一张与爆炸震源相似的记录。因撞击脉冲是随机序列,通过前移迭加提高了信噪比,随着撞击次数增加信噪比也成比例地提高。
Preface Foreign countries in recent years developed a new method of using as a source of vibrating rammer, known as MINI-SOSIE small source exploration method, which is characterized by the source itself, light weight, flexible operation, coupled with special equipment can be shallow High-resolution reflection seismic exploration. This method of exploration is that for a long enough period of time the source collides with the ground irregularly and the recording instrument performs a pre-overlap plus one for each impact recorded by a detector (or floor detector) mounted on the source floor Acquisition, and finally get a record similar to the explosion source. Since the impulse is a random sequence, the signal-to-noise ratio is increased by advancing, and the signal-to-noise ratio increases proportionally with the number of hits.