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为了给软土地基的加固施工提供参考,针对土中易溶盐的不同分布位置对电渗固结效果影响不同的特点,使用CaCl2作为易溶盐,添加到经过前期洗盐、烘干、碎土等处理的温州滨海相软土中,配置成初始含水率为65%的重塑土,对其进行了室内一维电渗固结试验研究。试验结果表明:易溶盐的分布范围对电渗效果有明显的影响,含盐土体分布于阳极附近时的电渗效果要比其分布于阴极附近时好;电渗试验过程中,只有当离子浓度条件和电场条件均处于最佳状态时,电渗的排水速率才会达到最大,对电能的利用率才会最高;含盐土体分布于阳极附近时的电渗能效比要比其分布于阴极附近时大,但电渗初期、后期能效比波动较大,含盐土体位于近阴极时的电渗能效比变化较为平稳。
In order to provide a reference for the reinforcement construction of soft soil foundation, in view of the different influence of different distribution locations of soluble salt in soil on the effect of electro-osmosis consolidation, CaCl2 is used as the soluble salt and added to the salt, dried, broken Soil and other treatment of Wenzhou coastal soft clay, configured as the initial moisture content of 65% of the remineralized soil, its indoor one-dimensional experimental study of electro-osmotic consolidation. The experimental results show that the distribution range of soluble salts has a significant effect on the electroosmotic effect. When the salty soil distributes near the anode, the electroosmotic effect is better than that near the cathode. In the process of electroosmotic test, Ion concentration and electric field conditions are in the best state, the electro-osmotic drainage rate will reach the maximum, the highest utilization of electric energy will be highest; salty soil distribution near the anode when the electro-osmotic efficiency ratio than the distribution When the salt concentration is near the cathode, the electro-osmotic energy-efficiency ratio changes more smoothly when the salt-bearing soil is near the cathode.