Application of cross-hole seismic CT tomography in karst geophysical exploration
The cross-hole seismic CT tomography technology is used to detect the strata of the building site with high pre-cision,obtain the formation information between the test holes of the investigation site and the distribution of bad geolog-ical bodies,so as to achieve the purpose of full-size geological prediction of the building site.Through the introduction of dimension error and location error parameters,combined with software inversion imaging further analysis,the effect of cross-hole seismic CT tomography on the formation detection and dimension detection of building sites is evaluated.Com-bined with the drilling survey results,the cross-hole seismic CT tomography analysis results are drawn into a comprehen-sive geological interpretation profile,which can obtain the full size of the site stratum.For different detection targets,the detection accuracy of seismic wave is mainly affected by the difference of seismic wave propagation velocity between the de-tection target and the surrounding environment.Finally,according to the results and conclusions of the analysis,it can be seen that the application of cross-hole seismic CT tomography in karst geophysical exploration is feasible,and the geolog-ical conditions can be clearly understood in combination with the formation information,which is conducive to the later de-sign and construction.
NETL
NSTL
万方数据
