高围压条件下隧道围岩相似材料渗透性研究  

Study on Permeability of Similar Materials in Tunnel Surrounding Rock under High Confining Pressure

作　　者：朱利晴 戴明善 李潇扬 孙洋 喻义天 童立红 丁海滨 ZHU Li-qing;DAI Ming-shan;LI Xiao-yang;SUN Yang;YU Yi-tian;TONG Li-hong;DING Hai-bin(Jiangxi Transportation Institute Co.,LTD.,Nanchang,Jiangxi,330052,China;School of Civil Engineering and Architecture,East China Jiaotong University,Nanchang,Jiangxi,330013,China)

机构地区：[1]江西省交通科学研究院有限公司,江西南昌330052 [2]华东交通大学土木建筑学院,江西南昌330013

出　　处：《建材技术与应用》2025年第1期10-14,共5页Research and Application of Building Materials

基　　金：江西省交通运输厅科技项目(重大研发专项)(2022Z0001);江西省交通运输厅科技项目(重大研发专项)(2022Z0002);江西省主要学科学术和技术带头人培养计划--领军人才项目(20225BCJ22014);赣鄱俊才支持计划-主要学科学术和技术带头人培养项目--青年人才(技术类)(20232BCJ23069)。

摘　　要：为研究围岩相似材料在高围压作用下的渗透特性,运用GDS三轴试验系统对隧道围岩相似材料进行渗透试验,研究了相似材料在围压为250 kPa、500 kPa、750 kPa、1000 kPa和1250 kPa下的渗透特性,测得相似材料在高围压下的渗透系数。试样制备选择铁粉、石英砂和重晶石粉为骨料,白水泥为胶结材料,选用硅油作为调节剂,以4种不同的配比制得围岩相似材料,分析高围压下相似材料渗透系数的变化与材料的不同配比对渗透系数的影响。结果表明:围岩相似材料的渗透系数随着围压的增大呈逐渐下降趋势并趋于稳定;调节剂硅油含量的增大降低了相似材料的渗透性;骨料含量的增大会缓和围压增大对相似材料渗透性的影响。In order to study the permeability characteristics of similar materials in surrounding rock under high confining pressure,this paper used GDS triaxial test system to conduct permeability tests on similar materials in tunnel surrounding rock,and studies the permeability characteristics of similar materials under confining pressure of 250 kPa,500 kPa,750 kPa,1000 kPa and 1250 kPa.The permeability coefficient of similar materials under high confining pressure was measured.In this experiment,iron powder,quartz sand and barite powder were selected as aggregate,white cement as cementing material,silicone oil as regulator,and similar surrounding rock materials were prepared with 4 different ratios.The changes of permeability coefficient of similar materials under high confining pressure and the effects of different ratios of materials on permeability coefficient were analyzed.The results show that the permeability coefficient of similar materials in surrounding rock gradually decreases and tends to be stable with the increase of confining pressure.The permeability of similar materials decreased with the increase of the content of silicone oil.The effect of confining pressure on the permeability of similar materials is mitigated by the increase of aggregate content.

关 键 词：相似材料 三轴试验 高围压 渗透特性 

分 类 号：TU45[建筑科学—岩土工程]