摘要
在电渗固结过程中,由于土体—电极接触面部分脱空,部分电势在电极处消耗,形成电势降现象,导致能耗损失和效率降低。考虑到斜插电极依靠重力作用有利于维持土体与电极间的接触,设计了相关的电渗试验模型,开展了斜插电极条件下的电渗试验,并与垂直电极的电渗试验效果进行了对比,分析了两种电极布置方式下电压降减少量、电流和排水量的变化。结果表明,斜插电极能有效控制电渗过程中的电阻变化,维持电流在有效水平,并在电渗时间相同的情况下,斜插电极比垂直布置电极的电渗排水量大、节省能耗。
In the process of electro-osmotic consolidation, due to partial detachment of the contact interface between soil mass and electrodes, a fraction of electrical potential is wasted at the electrodes interface, which leads to ＂potential drop＂ and waste of power energy. To incline the electrodes in soil mass will reduce the detachment, where the soils and e- lectrodes tend to stick together by gravity. An experimental model is established and a comparison is conducted between two different electrode installations, i. e. , vertical and inclined installation. The reduction of voltage drop and the change of current and water discharge are analyzed. The results show that the electrical resistance and current are effectively maintained within a favorable range if the electrodes are inclined. The inclined electrodes will bring more water discharge and take less electrical power in an equal time during the process of electro osmosis consolidation.
出处
《水电能源科学》
北大核心
2013年第11期105-108,248,共5页
Water Resources and Power
关键词
电渗固结
斜插电极
电压降
排水量
电导率
含水率
electro-osmotic consolidation
inclined electrode
voltage drop
water discharge
conductivity
moisture content
