SWR水分监测系统在黄土高填方工程中的应用研究  

SWR Moisture Monitoring System and Its Application in Dynamical Measurement of Soil Moisture Content in High Filled Ground

作　　者：于永堂[1,2,3] 张继文[2,3] 刘争宏[2,3] 杜伟飞[2,3] 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]机械工业勘察设计研究院有限公司,陕西西安710043 [3]陕西省特殊土工程性质与处理技术重点实验室,陕西西安710043

出　　处：《水利与建筑工程学报》2017年第3期87-91,共5页Journal of Water Resources and Architectural Engineering

基　　金：国家科技支撑计划项目(2013BAJ06B01)

摘　　要：黄土高填方工程的变形与稳定性受土体含水率的变化影响大。为了应用SWR水分监测系统对黄土高填方工程的土体含水率变化进行监测,研发了插针式SWR土壤水分传感器的探井埋设工艺,在采用烘干法获得实际体积含水率与对应输出电压数据的基础上,探讨了将SWR土壤水分传感器输出电压进行归一化处理后与体积含水率进行回归分析建立标定模型的方法。结果表明,探井埋设方法可将SWR土壤水分传感器准确可靠地安装就位,SWR土壤水分传感器经标定后,观测精度和个体间的互换性得到显著提高,能够准确反映土体中水分的动态变化规律。Deformation and stability of loess high filled ground are influenced by the change of soil moisture content. In order to apply SWR moisture monitoring system to measure soil moisture content in high filled ground,the technology of the SWR soil moisture sensor was installed in an exploratory. Based on the actual volume moisture content data of soil samples obtained by drying method in laboratory test and the corresponding output voltage data of the SWR soil moisture sensor,the actual volume moisture content data and the normalized output voltage data were used to establish the calibration model by using the regression analyse method. The results show that the SWR soil moisture sensor can be installed accurately and reliably in exploratory well. The observation precision and interchange ability among individuals of SWR soil moisture sensors are improved significantly,and the dynamic change and regulation of soil moisture can be revealed accurately after calibration.

关 键 词：驻波比 黄土 含水率 监测 标定 

分 类 号：TU444[建筑科学—岩土工程]