管状EKG电化学注浆软基加固室内试验研究

发布时间：2018-05-17 03:09

本文选题：电化学注浆 + 真空预压　；参考：《岩土工程学报》2017年S2期

【摘要】：为了改善电化学注浆法存在的问题,寻求适宜的注浆浓度和方式,利用自主研发的装置前期对管状EKG电化学注浆法进行探索,对比不同注浆浓度电化学注浆效果,以此为基础重点分析强度和电流两个因素,探究电化学注浆对真空预压进行二次加固的可行性,结果表明:(1)EKG管可将真空预压和电化学注浆有机结合,有效缓解金属电极腐蚀问题;(2)电化学注浆效果显著,必然存在浓度最优值使得注浆效果最好,电势作为能反映外加电解质溶液后土体内部变化的重要指标应该被重点研究;(3)真空电化学注浆法二次加固土样强度提升明显,注浆浓度选择应根据土样含水率具体确定,研究尚需完善,但能够为真空预压的二次处理方式提供新的研究方向。
[Abstract]:In order to improve the existing problems of electrochemical grouting method, the proper grouting concentration and method were sought. The tubular EKG electrochemical grouting method was explored in the early stage of self-developed equipment, and the effect of electrochemical grouting with different grouting concentration was compared. Based on the analysis of two factors, strength and current, the feasibility of vacuum preloading by electrochemical grouting is explored. The results show that the vacuum preloading and electrochemical grouting can be combined organically with the 1: 1 EKG tube. The effect of electrochemical grouting is remarkable, and there must be an optimum value of concentration to make the grouting effect the best. As an important index to reflect the internal change of soil after the application of electrolyte solution, the electric potential should be studied emphatically. The strength of the soil sample strengthened by vacuum electrochemical grouting method is obviously enhanced, and the selection of grouting concentration should be determined according to the moisture content of soil sample. The research needs to be improved, but it can provide a new research direction for the secondary treatment of vacuum preloading.
【作者单位】：河海大学岩土力学与教育部重点实验室;河海大学江苏省岩土工程技术工程研究中心;
【基金】：中央高校基本科研业务费专项资金项目(2015B17114)
【分类号】：TU472.5

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