Algorithmic approach to discrete fracture network flow modeling in consideration of realistic connections in large-scale fracture networks

作     者：Qihua Zhang Shan Dong Yaoqi Liu Junjie Huang Feng Xiong 

作者机构：Badong National Observation and Research Station of GeohazardsChina University of GeosciencesWuhan430074China SINOPEC Shanghai Engineering Co.Ltd.Shanghai200120China Faculty of EngineeringChina University of GeosciencesWuhan430074China 

出 版 物：《Journal of Rock Mechanics and Geotechnical Engineering》 (岩石力学与岩土工程学报（英文版）)

年 卷 期：2024年第16卷第9期

页      面：3798-3811页

核心收录：

学科分类：07[理学] 0818[工学-地质资源与地质工程] 0701[理学-数学] 070101[理学-基础数学] 

基　　金：sponsored by the General Program of the National Natural Science Foundation of China(Grant Nos.52079129 and 52209148) the Hubei Provincial General Fund,China(Grant No.2023AFB567) 

主　　题：Discrete fracture network(DFN)flow model Geometric algorithm Fracture flow Water-sealing effect 

摘      要：Analyzing rock mass seepage using the discrete fracture network(DFN)flow model poses challenges when dealing with complex fracture *** paper presents a novel DFN flow model that incorporates the actual connections of large-scale ***,this model efficiently manages over 20,000 fractures without necessitating adjustments to the DFN *** geometric analyses,such as identifying connected fractures,dividing the two-dimensional domain into closed loops,triangulating arbitrary loops,and refining triangular elements,are fully *** analysis processes are comprehensively introduced,and core algorithms,along with their pseudo-codes,are outlined and explained to assist readers in their programming *** accuracy of geometric analyses is validated through topological graphs representing the connection relationships between *** practical application,the proposed model is employed to assess the water-sealing effectiveness of an underground storage cavern *** analysis results indicate that the existing design scheme can effectively prevent the stored oil from leaking in the presence of both dense and sparse ***,following extensive modification and optimization,the scale and precision of model computation suggest that the proposed model and developed codes can meet the requirements of engineering applications.