含倒转等复杂地层层序统一处理方法OA

[Objective]A 3D geological model is a simulation of the complex geological structures of urban underground space,which plays a crucial role in geological engineering.[Methods]The spatial distribution of strata is often characterized by inhomogeneity and irregularity,and phenomena such as stratigraphic inversion caused by geological tectonic movements,transgressions and regressions,sedimentary cycles,and erosion are frequently encountered.In response to these engineering geological issues,traditional methods for automatically connecting stratigraphic profiles have not fully considered the corresponding relationship between adjacent boreholes in complex strata such as inversion,resulting in unreasonable profile stratigraphic connections and thus failing to construct a geological model consistent with the actual conditions.To resolve the problem of stratigraphic profile connection in the case of complex strata such as inversion,a unified stratigraphic sequence processing method incorporating inversion and other complex strata was proposed.[Results]This method compared the new-old relationships of strata from top to bottom based on a standard sequence,performed interpolation of the stratigraphic base based on the comparison results,inserted zero-thickness layers at the interpolation positions to establish a unified stratigraphic sequence,and finally updated the borehole stratification codes accordingly.The results indicated that this method could effectively resolve the issues of incorrect stratigraphic connections caused by complex strata such as inversion,providing a reliable basis for stratigraphic connection in profile and 3D geological modeling.[Conclusion]The research methods and findings can provide guidance and reference for similar engineering projects.