EKG电极的电渗现场试验研究  

Field Test on Electroosmosis Using EKG Electrode

作　　者：刘志涛 庄艳峰[1] 黄运兰 柳菲菲 邹维列[1] 李子优 LIU Zhitao;ZHUANG Yanfeng;HUANG Yunlan;LIU Feifei;ZOU Weilie;LI Ziyou(School of Civil Engineering,Wuhan University,Wuhan,Hubei 430072,China)

机构地区：[1]武汉大学土木建筑工程学院,湖北武汉430072

出　　处：《水利与建筑工程学报》2019年第2期46-51,共6页Journal of Water Resources and Architectural Engineering

基　　金：国家自然科学基金项目(41472039;51109168)

摘　　要：基于电渗法处理软土研究多为室内模型试验研究,缺乏现场试验验证电渗法的有效性。引入新型电动土工合成材料(EKG)电极,采用电渗排水法进行大规模的现场软土处理试验,验证电渗排水法在实际应用中对软土的处理效果,同时验证新型电极的可靠性。结果表明:反转电极有利于促进电渗排水,间歇通电能让土体恢复排水能力;电渗处理后的软土含水率由62%降至32%,抗剪强度、干密度、承载力都有一定提高;EKG电极在使用一个月后基本无腐蚀现象,只是表面附着一层白色沉淀物,很好地解决了电极腐蚀问题。The study of soft soil treatment based on electroosmosis is mostly indoor model test,which is lack of field test to verify the effectiveness of electroosmosis.A new type of Electro-kinetic geosynthetics(EKG)was introduced and electroosmotic drainage method was used to treat the soft soil on site in a large scale.The effects of the electroosmotic drainage method on the soft soil were verified in the practical test and the reliability of the new electrode was tested.The results show that the method of reversing the electrode is beneficial to promote the electroosmotic drainage and intermittent energization and can restore soil drainage capacity.The moisture content of the soft soil after electroosmosis treatment decreased from 62% to 32%,and the shear strength,dry density and bearing capacity are improved.EKG was not corroded after one month of use,only white sediments adhere to the surface,which solves the problem of electrode corrosion well.

关 键 词：电动土工合成材料 电渗 软土处理 电极腐蚀 

分 类 号：TU447[建筑科学—岩土工程]