Numerical Simulation of Slurry Diffusion in Fractured Rocks Considering a Time-Varying Viscosity  

作　　者：Lei Zhu Bin Liu Xuewei Liu Wei Deng Wenjie Yao Ying Fan 

机构地区：[1]School of Civil Engineering,Architecture and Environment,Hubei University of Technology,Wuhan,430068,China [2]State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan,430071,China

出　　处：《Fluid Dynamics & Materials Processing》2024年第2期401-427,共27页流体力学与材料加工（英文）

基　　金：supported by the National Natural Science Foundation of China(Grant Numbers:U22A20234,42277170);the Key Research and Development Project of Hubei Province(Grant Number:2020BCB073).

摘　　要：To analyze the effects of a time-varying viscosity on the penetration length of grouting,in this study cement slur-ries with varying water-cement ratios have been investigated using the Bingham’sfluidflow equation and a dis-crete element method.Afluid-solid coupling numerical model has been introduced accordingly,and its accuracy has been validated through comparison of theoretical and numerical solutions.For different fracture forms(a single fracture,a branch fracture,and a fracture network),the influence of the time-varying viscosity on the slurry length range has been investigated,considering the change in the fracture aperture.The results show that under different fracture forms and the same grouting process conditions,the influence of the time-varying viscosity on the seepage length is 0.350 m.

关 键 词：Time-varying viscosity binghamfluids UDEC numerical simulation grout penetration length aperture 

分 类 号：P61[天文地球—矿床学]