检波器尾座结构对地震采集信号的影响

The Influence of Geophone Seat Structure Upon the Acquired Seismic Signals

在检波器尾锥与检波器主体连接处紧密连接一个刚度大、质量轻的"尾罩",该尾罩与尾锥共同构成检波器尾座。该结构使检波器在整体质量没有明显增大的情况下,其与安装表面的结合刚度增大,从而使得响应信号的能量增强、频带加宽,尤其是高频成分得到增强。幅频响应理论分析和实际测试结果一致,验证了该发明的正确性。带尾座检波器适合在松软地表或沙漠地域地震勘探中使用和推广。

A rigid and light mantle joins tightly between the geophone body and its tailcone, combining with the tailcone, to form a device called geophone seat. On the condition of no promotion of the total mass, this structure enhanced the stiffness between the geophone and the earth surface and the respond signal of the geophone and the band width of the frequency response thus increased, especially the higher frequency component can be improved. The practical test was coincident with the theoretic analysis. This geophone with seat suits the field with soft surface or in the desert area.