室内水平电渗排水试验研究  

Experimental Study of Electro-osmotic Test

作　　者：王宁伟[1,2] 韩旭[1] 张雷[2] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]中国地震局工程力学研究所,黑龙江哈尔滨150080

出　　处：《岩土工程技术》2014年第5期261-264,共4页Geotechnical Engineering Technique

摘　　要：根据多次室内试验,大致掌握了不同电势梯度下非饱和黏性土的水平电渗排水规律,从电渗排水量、排水速率、土体电阻、能量消耗、电渗透系数、耗能系数等方面对电渗进行曲线分析,通过分析大致判断电渗排水的终止条件,可以对未来电渗法的实际操作给出一定的理论依据。试验结果表明:随着通电时间的增加,土体的电阻增大,其电流减小,导致电渗排水的速率降低,出于节能的考虑,可以在电渗末期停止通电,这样做既节能又有利于电渗排水的效果。According to a lot of laboratory tests,generally master the law of level electroosmotic drainage of the unsatu-rated cohesive soil with different electric potential gradient. Do some electro-osmosis curve analysis about the aspects of electro- osmosis displacement, drainage rate, soil resistance, coefficient of permeability of electricity, energy consumption and energy dis- sipation coefficient. The theoretical basis about electro-osmosis method for the future of the actual operation is given according to the termination conditions of electro-osmotic drainage determined by the analysis approximately. The results show that soil resistance increases and electric current decreases with the increase of conduction time. It leads the decrease of the electro-os motic drainage rate. Electricity can be stopped in the end of electro osmosis for reasons of energy saving. It benefits electro-os- motic drainage and saves energy.

关 键 词：水平电渗 电渗透系数 耗能系数 土体电阻 终止现象 

分 类 号：TU411[建筑科学—岩土工程]