化学电渗法加固软基位移场观测透明土模型试验

孔纲强; 刘大鹏; 傅钧义; 周杨; 文磊

doi:10.11779/CJGE2019S1038

化学电渗法加固软基位移场观测透明土模型试验 English Version

河海大学岩土力学与堤坝工程教育部重点实验室,江苏南京 210098

基金项目: 国家自然科学基金项目（51478165）

详细信息

作者简介:
孔纲强(1982—),男,浙江磐安人,博士,教授,博士生导师,主要从事能源地下结构、透明土试验技术等方面的教学与研究工作。E-mail:gqkong1@163.com。

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出版历程
- 收稿日期: 2019-04-28
- 发布日期: 2019-07-14

Transparent model tests on displacement field measurement of soft ground reinforcement by electro-osmotic chemical method

Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China

摘要

摘要: 化学电渗法是通过电极添加化学溶液以提高电渗效率、增强加固效果的新技术。基于新型透明黏土材料和PIV技术,开展化学电渗法加固软基透明土模型试验,可视化观测土体内部位移场、排水量等变化规律;着重分析了电压梯度、电渗时长、以及化学溶液浓度等因素对软基加固效果的影响规律。研究结果表明：本文试验条件下,电压梯度每增大0.2 V/cm,电流峰值平均增大35%,排水速率峰值平均增大30%;加入化学溶液能降低40%的有效电阻,试剂浓度每增大0.5 mol/L,排水速率峰值平均增幅为25%。
- 软基处理 /
- 化学电渗法 /
- 透明黏土 /
- 位移场 /
- 模型试验
Abstract: Chemical electro-osmosis is one of new technologies to increase the electro-osmotic efficiency and enhance the reinforcing effects by adding chemical solution through the electrode. Based on one new transparent clay material and PIV technology, model tests on the soft ground reinforcement by chemical electro-osmosis method are carried out. The internal displacement field and drainage are measured, and the reinforcement effects influenced by voltage gradient, electro-osmotic duration, chemical solution concentration, and other factors are discussed and analyzed. Under this model test condition, the results show that the current peak value increases by about 35%, and the drainage rate increases by about 30% under every 0.2 V/cm increase of the voltage gradient. The addition of chemical reagent can reduce the effective resistance by 40%. Every 0.5 mol/L increase in the concentration of the reagent, the average increase in the peak rate of the drainage rate is 25%.
- soft ground treatment /
- electro-osmotic chemical mehtod /
- transparent clay /
- displacement field /
- model test

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参考文献(10)

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