Complex 3D geological modeling based on digital twin

Abstract

With the development of digital twin and multi-source data fusion technologies, objectively and accurately reflecting the complexity of geological structures has been the key to the development of geological modeling. Therefore, a complex 3D geological modeling method based on digital twin is proposed. Integrating multi-source data, the method realized 3D modeling of geological body containing complex structures through potential-field interpolation based on cokriging algorithm. Combined with real-time sampling data such as geological sketch of palm surface and advanced geological prediction obtained during the construction process, the 3D geological model was locally corrected to achieve a realistic approximation of the newly revealed geological conditions. The results show that the digital twin geological model can reasonably and effectively use multi-source and multi-scale geological information to truly reflect the 3D spatial characteristics of complex geological structures. It also reflects the refined process of geological model before and after the engineering construction, and provides effective safety guarantee for the tunnel and underground space engineering in the construction and operation stages.