摘要
滇中引水工程隧洞软岩大变形问题是十大世界级技术难题之一.以滇中引水工程柳家村隧道钙质泥岩为研究对象,开展了渗流作用下的三轴流变力学试验,研究了渗流作用影响下钙质泥岩流变变形规律及加速流变特征.结合钙质泥岩在不同渗压作用下的流变特性,引入比奥系数与损伤变量,基于非线性元件模型,建立反映不同渗流压力作用下钙质泥岩损伤流变特性的本构模型,对非线性损伤流变模型进行参数辨识,模型与流变试验结果匹配良好.研究成果对认识和掌握滇中红层软岩渗流流变力学特性具有重要理论意义和实用价值.
The large deformation of soft rock in the central Yunnan water diversion Project is one of the top ten world technical problems.Based on calcareous mudstone in the tunnel section of Liujiacun tunnel in the central Yunnan water diversion Project,a series of triaxial rheological tests were carried out under seepage action to study the deformation law and accelerated rheological characteristics of calcareous mudstone.In order to establish the damage rheological model of calcareous mudstone under different action of different seepage pressure,Biot's coefficient and the damage variable were introduced to nonlinear components model according to calcareous mudstone rheological properties under different seepage pressure.The results show that nonlinear damage model curves are in linear with rheological test after parameter identification.The research results can provide theoretical and practical significance for understanding and mastering the seepage rheological properties of red bed soft rocks in the central Yunnan.
作者
王环玲
王廷超
胡明涛
宁宇
王如宾
王鹏
WANG Huanling;WANG Tingchao;HU Mingtao;NING Yu;WANG Rubin;WANG Peng(Research Institute of Geotechnical Engineering,Hohai Univ.,Nanjing 210098,China;Yunnan Dianzhong Water Diversion Engineering Co.,Ltd.,Kunming 650051,China;POWERCHINA Kunming Engineering Co.,Ltd.,Kunming 650051,China)
出处
《三峡大学学报（自然科学版）》
CAS
2023年第5期31-37,共7页
Journal of China Three Gorges University：Natural Sciences
基金
云南省重大科技专项计划项目(202102AF080001)。
关键词
红层软岩
渗流流变
损伤流变模型
滇中引水工程
red-bed soft rock
hydraulic-rheology
damage rheological model
the central Yunnan water diversion project
作者简介
王环玲(1976-),女,教授,博士,博士生导师,主要研究方向为岩石力学与工程.E-mail:wanghuanling@hhu.edu.cn;通信作者:胡明涛(1995-),男,博士研究生,主要从事岩石力学与工程等方面的研究.E-mail:mingtaoh20@163.com。
