基于分段线性化的泥浆一维电渗脱水模型  

One Dimensional Electroosmotic Dewatering Model of Mud Based on Piecewise Linearization

作　　者：岑勋云 刘忠玉[1] 张景伟[1] 罗文培 汪良强 CEN Xunyun;LIU Zhongyu;ZHANG Jingwei;LUO Wenpei;WANG Liangqiang(School of Civil Engineering,Zhengzhou University,Zhengzhou 450001,China;Zhengzhou Sanhe Hydraulic Machinery Co.,Ltd.,Zhengzhou 450120,China)

机构地区：[1]郑州大学土木工程学院,河南郑州450001 [2]郑州三和水工机械有限公司,河南郑州450120

出　　处：《郑州大学学报（工学版）》2024年第3期22-28,共7页Journal of Zhengzhou University（Engineering Science）

基　　金：国家自然科学基金资助项目(51578511);河南省科技攻关项目(232102320352)。

摘　　要：为进一步深入探讨泥浆电渗脱水的影响因素,基于分段线性化方法,建立了泥浆一维电渗脱水模型。该模型考虑了电势梯度、孔隙比等因素对泥浆电渗透系数的综合影响,可以描述泥浆的非线性应力应变关系和大变形效应。与相关解析解及室内模型试验的对比结果表明:所提模型分析结果的误差不超过5%。在此基础上,分析了加载电压、压缩指数、电渗透系数等参数对泥浆电渗脱水过程的影响,结果表明:增大加载电压和电渗透系数,可提高最终脱水量和缩短稳定时间;随着泥浆压缩性的提高,泥浆最终脱水量增大、稳定时间延长。Based on piecewise-linear method,a one-dimensional electroosmotic dewatering model of mud was proposed in order to further explore the influence factors of mud electroosmotic dehydration.In this model,the combined influence of potential gradient and void ratio on the electroosmotic coefficient of mud and the nonlinear stressstrain relationship and large deformation effect of mud were considered.Compared with the results of relevant analytical solutions and laboratory model tests,the error of this model was less than 5%.On this basis,the influences of loading voltage,compression index and electroosmotic coefficient on the process of mud electroosmosis dehydration were analyzed.The results showed that the increase of loading voltage and electroosmotic coefficient could improve the final water removal and shorten the stabilization time.With the increase of mud compressibility,the final dewatering volume of mud increased,but the stabilization time was prolonged.

关 键 词：电渗脱水 泥浆 分段线性化 电势 电渗透系数 模型试验 

分 类 号：TU43[建筑科学—岩土工程]