Study on the risk of seepage field of Qiantang River underground space excavated in water-rich rheological rock area

Abstract With the rapid development of underwater space construction, theoretical research is at initial stage. At present, methods mainly include mirror image method and conformal transformation method. almost all objects in analytical are homogeneous soil layers. However, practical engineering, layers often distributed In this study, seepage field layered analyzed, derivation heterogeneous media based on traditional given, which verified by numerical simulation. The hydraulic head loss medium with better permeability shallow layer very small, streamline vertically distributed. weak interlayer, huge, bends greatly, showing a strong horizontal distribution converging towards center. It can provide basis for design water pressure engineering.