摘要
为探究电化学加固整治铁路路基基床翻浆冒泥病害技术可行方案,构建1∶1模型试验槽,埋设电极管对翻浆冒泥土样进行电化学排水胶结。分析典型位置土样的物理力学性质变化、排水速率以及电流强度变化,结果表明:电极对间距选用1.2 m可使土体加固效果较均匀;当电极对埋深30 cm,至少可有效处理40 cm深土体;处理1.0 m长路基所需电能不超过120 kW·h;通电结束条件,以排水速率降低至不足初始排水速率的1/10为宜。
In order to explore the feasible technical plan for electrochemical reinforcement regulation to railway subgrade mud pumping issue,a 1:1 model test tank has been built and electrode tubes have been embedded to conduct electrochemical drainage cementation of the slurry riser sample.By analyzing the changes of physical and mechanical properties,drainage rate and current intensity of soil samples at typical locations,the result shows that the reinforcement effect of soil can be more uniform if the spacing of electrode pairs is 1.2 m.When the embedding depth of the electrode pair is 30 cm,the soil at least 40 cm deep can be effectively treated.The power required for the treatment of 1m long roadbed shall not exceed 120 kW•h.It is advisable that the end condition of energizing is that when the drainage rate is less than 1/10 of the initial drainage rate.
作者
肖芳炎
苏谦
XIAO Fangyan;SU Qian(School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China;Key Laboratory of High-speed Railway Engineering of Ministry of Education,Southwest Jiaotong University,Chengdu 610031,China)
出处
《路基工程》
2021年第3期197-201,共5页
Subgrade Engineering
基金
国家自然科学基金项目(51978588)
国家自然科学基金项目(51578467)。
关键词
铁路路基基床
翻浆冒泥
电化学加固
电极对间距
加固深度
railway subgrade bed
mud pumping
electrochemical reinforcement
electrode pair spacing
reinforcement depth
