复杂环境下围岩相似材料配合比及渗透性研究

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DOI：10.19860/j.cnki.issn1005-8249.2025.04.007

RONG Yao’，JIANG Xunzhong²，YU Yitian³，SUN Yang1，DING Haibin³，TONG Lihong³ （1. Jiangxi Jiaotou Maintenance Technology Group Co.， Ltd.， Nanchang 33OO52， China; 2.School of Civil and Architectural Engineering，Donghua Universityof Technology，Nanchang 33O032，China; 3.School of Civil Engineering and Architecture，East China Jiaotong University，Nanchang 330013，China） Abstract：Withtherapiddevelopmentofundergroundengineering technology，higherrequirementshaveben placedonsimilar materials forfluid structurecoupling modeltestsundercomplex confining pressreand waterpressureenvironmentalconditions. To studysimilar materials suitable for model experiments，iron powder，baritepowder，quartzsand，siliconeoil，and white cement were selected as raw materials. The orthogonal experimental method was used to design 9 different material ratioschmes，revealingthe variationlawof theirpermeability，and establishingaquantitativerelationshipbetweenpereability coeficientandaggregateratio，whitecement，and siliconeoilcontent.Theresultsindicate thatan increaseinconfining presure willcompressthe internal poresof the material，making the structure denserand thusreducing the permeability coeficient；The increaseinwater pressrewillead toanincreaseinporepressure，therebyimproving permeability；The

proportinofaggregateinthematerialplaysadecisiveroleinthepermeabilitycoeficient.Whentheconfiningpresureand water pressureareconstant，thepermeabilitycoeficientofthespecimenshowsadecreasing trendwiththeincreaseof iliconeoil contentand whitecementcontent.Theresearch results provideareliablebasisforselecting similar materials forfluid structure coupling model experiments under complex environmental conditions.

Key words：confining pressure and water presure；tunnel enginering；similar materialsof surounding rock；permeability oefficient

0 引言

随着我国交通运输需求的不断增加，许多隧道建设向地下深部发展[1。（剩余4019字）