摘要
电渗法是一种处理软土地基的有效方法,其基本参数的确定在工程应用中至关重要。利用自制的电渗试验装置,对某一高含水量淤泥土进行了稳压电渗试验和稳流电渗试验,测量了电渗过程中电流、电压、出水速率的变化,总结了电渗透系数、电迁移系数、电导率和单位能耗出水速率等基本参数的变化规律。试验结果表明:随着电渗的进行,电渗透系数逐渐减小,而电迁移系数相对稳定。土体的电导率和单位能耗出水量也逐渐降低。因此,用电迁移系数来评价电渗效果可能更为合理。
Electro-osmosis is an effective way to treat soft soil ground,and the determination of its basic parameters is important in practical applications.With a new laboratory device,two electro-osmosis experiments are performed on high-moisture clay under the conditions of steady voltage and current respectively,to measure the evolution of current,voltage and water flow rate through the clay specimens.The electro-osmotic parameters of the permeability coefficient,the migration coefficient,the electrical conductivity and the unit energy consumption rate are studied.It is found that in the process of the electro-osmotic experiment,the electro-osmotic permeability coefficient,the electrical conductivity and the unit energy consumption rate decrease gradually,while the electro-osmotic migration coefficient is relatively stable.Therefore,it might be more reasonable to assess the electro-osmotic efficiency with the migration coefficient.
出处
《水运工程》
北大核心
2011年第3期148-153,共6页
Port & Waterway Engineering
基金
国家高技术研究发展计划(2007AA11Z115)
江苏省自然科学基金(BK2009344)
关键词
电渗透系数
电迁移系数
电导率
单位能耗出水量
electro-osmotic permeability coefficientelectro-osmotic migration coefficient electrical conductivity unit energy consumption rate
