Assessments of the effects of various fracture surface morphology on single fracture flow: A review

作     者：Min Gao Chengguo Zhang Joung Oh Min Gao;Chengguo Zhang;Joung Oh

作者机构：School of Minerals and Energy Resources EngineeringUniversity of New South WalesSydney NSW 2052Australia 

出 版 物：《International Journal of Mining Science and Technology》 (矿业科学技术学报（英文版）)

年 卷 期：2023年第33卷第1期

页      面：1-29页

核心收录：

学科分类：0819[工学-矿业工程] 08[工学] 080103[工学-流体力学] 0801[工学-力学（可授工学、理学学位）] 

主　　题：Surface roughness Single fracture Nonlinear flow Coupled hydromechanical(HM)behaviours 

摘      要：Natural rock joint permeability deviates from the classic fluid flow governing equations due to the inher-ent fracture surface roughness(i.e.,contact points,spatial correlation,matching,varying aperture,iso-lated voids,infilling material,tortuosity and channellings)and engineering disturbance such as excavations.To improve the accuracy of fracture permeability evaluation,many efforts have been made in analytical,experimental,and numerical methods.This study reviews the modified mathematical gov-erning equations of fluid flow and classifies them based on different influencing factors,such as friction factor,aperture,tortuosity,inertia,and various in situ stress effects.Various experimental and simulation techniques for the coupled normal-and shear-stress flow problems were assessed,and their advantages and disadvantages were also analysed.Furthermore,different surface roughness descriptions and their impacts on mechanical and hydraulic behaviours were discussed,followed by the potential research directions for fracture flow problems.