自然科学版 英文版
自然科学版 英文版
自然科学版 英文版
自然科学版 英文版
英文版编委
自然科学版 英文版
英文版首届青年编委

您目前所在的位置:首页 - 期刊简介 - 详细页面

中南大学学报(自然科学版)

Journal of Central South University

第47卷    第3期    总第259期    2016年3月

[PDF全文下载]    [Flash在线阅读]

    

文章编号:1672-7207(2016)03-0889-08
基于热-水-力耦合的电渗排水试验数值模拟
王柳江1, 2,刘斯宏1,陈守开2, 3,周斌1

(1. 河海大学水利水电学院,江苏南京,210098;
2. 水利部堤防民病害防治工程技术研究中心,河南郑州,450003;
3. 华北水利水电大学水利学院,河南郑州,450011
)

摘 要: 基于多孔介质理论和热力学理论,考虑电渗产生的温度对土体变形及排水性质的影响,建立热-水-力耦合作用下的电渗排水多场耦合数学模型,并利用Fortran语言编制计算程序。在此基础上开展电渗排水现场试验的数值模拟,并与现场监测结果进行对比。研究结果表明:建立的模型可较好地模拟电渗过程中的温度场、渗流场及应力场变化和分布规律。土体温度随能耗增大而升高,尤其对于电极附近土体;阳极周围土体孔隙水压力减小,而阴极周围土体孔隙水压力增大,且考虑温度作用下的电渗流量随电渗的持续而增加;地基沉降由土体温度上升引起。

 

关键词: 电渗;热-水-力耦合;排水;数值模拟;软土

Numerical simulation of electro-osmostic drainage test based thermo-hydro-mechanical coupling model
WANG Liujiang1, 2, LIU Sihong1, CHEN Shuokai2, 3, ZHOU Bin1

1. College of Hydropower and Water Conservancy, Hohai University, Nanjing 210098, China;
2. Dyke Safety and Ministry of Water Resources Engineering Research Center for Disease Control,
Zhengzhou 450003, China;
3. School of Water Resources, North China University of Water Resources and Electric Power,
Zhengzhou 450011, China

Abstract:The thermo-hydro-mechanical coupling mathematic model for electro-osmosis consolidation was established based on porous medium and thermodynamics theory, considering the effects of temperature induced by electro-osmosis on soil deformation and drainage properties. Then the computational program was compiled with Fortran language. The numerical simulation program was verified by comparison with field test of electro-osmosis drainage. The result shows that the proposed model for electro-osmosis consolidation can accurately simulate the variation and distribution of temperature, seepage, and stress field in the process of electro-osmosis. The temperature of the soil increases with the increase of energy input, especially in the vicinity of electrodes. The hydraulic head decreases near the anode, while it increases around the cathode. The simulated electro-osmotic flow rate increases with the duration of electro-osmosis considering the action of temperature. The settlement of surrounding soils is also induced due to the increase of temperature.

 

Key words: electro-osmosis; thermo-hydro-mechanical coupling; drainage; numerical simulation; soft clay

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
版权所有:《中南大学学报(自然科学版、英文版)》编辑部
地 址:湖南省长沙市中南大学 邮编: 410083
电 话: 0731-88879765(中) 88836963(英) 传真: 0731-88877727
电子邮箱:zngdxb@csu.edu.cn 湘ICP备09001153号