Presentation Information
[2B20]Spatial Evaluation of Mineral Dissolution Reactions Based on Fracture Network Structure
*Ippei Chikura1, Takumi Saito1, Shunichi Okamoto2,1 (1. University of Tokyo Graduate School of Engineering, 2. Central Research Institute of Electric Power Industry)
Keywords:
Geological Disposal of High Level Waste,Discrete Fracture Network,Reactive Transport Modeling,Fracture Network Structure
Understanding how fracture-network structure controls long-term hydro-geochemical evolution is critical for geological disposal. I develop a DFN-based reactive transport framework that aggregates quartz-reaction-induced porosity and permeability changes at the fracture level and links them with multiple structural metrics. These metrics also serve as features for constructing simplified and faster predictive models. This structure-based approach provides a new pathway for evaluating long-term barrier performance in fractured rock relevant to high-level waste disposal.