Two-way continuous navigation seismic refraction observation system suitable for complex water area exploration

Abstract

The invention relates to a bidirectional continuous underway seismic refraction method observation system applicable to complex water area exploration. The bidirectional continuous underway seismic refraction method includes the following steps that first, preparatory work is done; second, underway exploration is carried out, and time parameters T and coordinate parameters S in both directions are acquired; third, reciprocal reverse control hodographs are drawn; fourth, the focal depth H can be obtained through formula calculation, and seismic refraction exploration in a complex water area is interpreted. According to the bidirectional continuous underway observation system, for the two banks, a single hodograph is continuously chased from one bank to the opposite bank, chasing observation is repeated, and a reciprocal shot point is determined through sound velocity in water so as to achieve the encountering purpose; then, on the basis of the equality in the interchange of seismic refraction waves and the parallelism principle of refraction wave hodographs, seismic refraction exploration in complex water areas such as a water surface is achieved, the exploration process is simplified, the exploration accuracy is improved, it is guaranteed that the design of tunnels and the like is reasonable, scientific and safe, and gaps in the field of complex water area exploration at home and aboard are filled in.

Description

technical field [0001] The invention relates to the field of seismic exploration, in particular to a two-way continuous navigation seismic refraction observation system suitable for complex water area exploration. Background technique [0002] Seismic refraction method is a seismic exploration method that uses the refraction principle of seismic waves to detect shallow layers or structures with different wave velocities, referred to as shallow refraction wave method. [0003] Shallow refracted wave seismic exploration uses artificially excited seismic waves to propagate in the underground medium. When passing through the interface between media with different wave velocities, the wave changes its original propagation direction and produces refraction. When the wave velocity of the lower medium is greater than that of the upper medium, when the incident angle of the wave is equal to the critical angle, the refracted wave will "slide" along the velocity in the medium below th...

AI Technical Summary

Problems solved by technology

In this way, seismic refraction exploration in complex waters cannot be realized

Images