典型文献
Quantitative two/three-dimensional spatial characterization and fluid transport prediction of macro/micropores in Gaomiaozi bentonite
文献摘要：
The sealing performance of a bentonite barrier is highly dependent on its seepage characteristics,which are directly related to the characteristics of its pore structure.Based on scanning electron microscopy(SEM)and focused ion beam-SEM(FIB-SEM),the pore structure of bentonite was characterized at different scales.First,a reasonable gray threshold was determined through back analysis,and the image was binarized based on the threshold.In addition,binary images were used to analyze bentonite's pore structure(porosity and pore size distribution).Furthermore,the effects of different algorithms on the pore structure characterization were evaluated.Then,permeability calculations were performed based on the previous pore structure characteristics and a modified permeability prediction model.For permeability prediction based on the three-dimensional model,the effect of pore tortuosity was also considered.Finally,the accuracy of numerical calculations was verified by conducting macroscopic gas and alcohol permeability experiments.This approach provides a better understanding of the microscale mechanism of gas transport in bentonite and the importance of pore structures at different scales in determining its seepage characteristics.
文献关键词：
中图分类号：
作者姓名：
Jiangfeng Liu;Shijia Ma;Hongyang Ni;Hai Pu;Xiaozhao Li;Shaojie Chen
作者机构：
State Key Laboratory for Geomechanics and Deep Underground Engineering,and School of Mechanics and Civil Engineering,China University of Mining and Technology,Xuzhou,221116,China;CAEA Innovation Center on Geological Disposal of High Level Radioactive Waste,Beijing Research Institute of Uranium Geology,Beijing,100029,China;Key Laboratory of Mining Disaster Prevention and Control,Shandong University of Science and Technology,Qingdao,266590,China
文献出处：
引用格式：
[1]Jiangfeng Liu;Shijia Ma;Hongyang Ni;Hai Pu;Xiaozhao Li;Shaojie Chen-.Quantitative two/three-dimensional spatial characterization and fluid transport prediction of macro/micropores in Gaomiaozi bentonite)[J].岩石力学与岩土工程学报（英文版）,2022(05):1568-1579
A类：
binarized
B类：
Quantitative,two,three,dimensional,spatial,characterization,fluid,transport,prediction,micropores,Gaomiaozi,bentonite,sealing,performance,barrier,highly,dependent,its,seepage,characteristics,which,are,directly,related,Based,scanning,electron,microscopy,focused,beam,FIB,was,characterized,different,scales,First,reasonable,gray,threshold,determined,through,back,analysis,In,addition,binary,images,were,analyze,porosity,size,distribution,Furthermore,effects,algorithms,evaluated,Then,permeability,calculations,performed,previous,modified,model,For,tortuosity,also,considered,Finally,accuracy,numerical,verified,by,conducting,macroscopic,gas,alcohol,experiments,This,approach,provides,better,understanding,microscale,mechanism,importance,structures,determining
AB值：
0.523307
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