摘要
以寒区灌区引水渠道建设为例,研究寒区渠道地基建设过程中的冻胀问题,通过理论分析,岩土体冻胀后的体积变化率与岩土体含水率呈正相关关系,通过室内力学实验分析,获取岩土体在干湿、冻融、干湿—冻融循环试验下的强度变化特征,结果过表明干湿—冻融循环试验造成岩体强度劣化特征最为明显。通过上述分析,结合工程实况提出寒区引水渠道地基加固处理方法,取得了较好的效果,可为类似工程提供参考。
Taking the construction of water diversion channel in cold irrigation area as an example, this paper studies the frost heave problem in the process of channel foundation construction in cold area. Through theoretical analysis, the volume change rate of rock and soil after frost heave is positively correlated with the moisture content of rock and soil. Through the Laboratory mechanical experiment analysis, the strength change characteristics of rock and soil under the dry-wet, freezethaw, dry-wet-freeze-thaw cycle test are obtained. The results show that the change rate of rock and soil strength is too high. The wet-freeze-thaw cycle test results in the most obvious deterioration of rock mass strength. Through the above analysis, combined with the actual situation of the project, the foundation reinforcement treatment method of water diversion canal in cold area is put forward, and good results are achieved, which can provide reference for similar projects.
作者
王旗
WANG Qi(Hubei Yinjiang Jihan Engineering Administration Bureau, Jingzhou 434000,China)
出处
《水科学与工程技术》
2019年第2期87-89,共3页
Water Sciences and Engineering Technology
关键词
引水渠道
力学实验
冻胀
强度劣化
地基加固
diversion channel
mechanical experiment
frost heaving
strength deterioration
foundation reinforcement
