天津师范大学学报（自然科学版）2025，Vol.45Issue(6)：35-44,10.DOI:10.19638/j.issn1671-1114.20250606
圆盘形裂隙扰动流场的三维解释模型及其核素运移模拟
Three-dimensional interpretation model for disturbance of seepage field by disc-shaped fracture and simulation of nuclide transport
摘要
Abstract
To investigate the mechanism of the influence of a single fracture on transport of radionuclide(hereinafter refferred to as"nuclide")in low-permeability rock mass,a three-dimensional(3D)cubic interpretation model of a single disc-shaped fracture developed in the center of a homogeneous bedrock porous medium was established.The model was used to simulate seepage fields and nuclide transport processes under various macroscopic hydraulic gradients and anisotropic matrix condi-tions.The results showed that:①The seepage field was disturbed by the fracture,with a capture zone formed in the upstream space and a divergent zone formed in the downstream space.Radionuclide nuclide released in the capture zone can be ab-stracted into the fracture,and quickly transport along the fracture for a certain distance,extending the nuclide contaminant plume.②The disturbed paths of flow and nuclide transport by the fracture were not only controlled by the macro-seepage direction,but also influenced by the anisotropic properties of the porous media.关键词
裂隙岩体/三维模型/核素运移/截获区/污染羽Key words
fractured rock mass/three-dimensional model/nuclide transport/capture zone/contaminant plume分类
天文与地球科学引用本文复制引用
惠多,王旭升,周志超,赵敬波..圆盘形裂隙扰动流场的三维解释模型及其核素运移模拟[J].天津师范大学学报（自然科学版）,2025,45(6):35-44,10.基金项目
国家原子能机构高放废物地质处置创新中心基金资助项目(CXJJ21102212). （CXJJ21102212）
