摘要
本文介绍了热脉冲式包气带微流速监测系统的原理研究、硬件设计及其标定和室内模拟试验.该监测系统理论上应用了线状热源热传导方程的两个阶段：计算微流速采用的是热传导方程的稳态阶段;计算热导率和土壤含水率用的是方程的非稳态阶段.监测系统前端机的研制着重介绍了硬件设计.室内模拟试验为饱和砂土的室内对比试验,流速值从18～485mm/h.实验结果显示系统的测量值和实际值能很好的吻合.
The paper introduced the theory of the study process and indoor experiment of the example monitoring system. The theory of the system is the heat transfer equation on line heat source. It applied the stable stage of the equation for calculating the soil water velocity and the unstable stable stage for calculating the soil thermal conductivity and volumetric water capacity. The main instrument stresses the design of hardware. The indoor experiment is to compare the real soil water velocity and the measuring data. The real soil water velocity is from 18mm/h ～ 485mm/h. The result of the experiment shows that the real values and the measuring values are identical. Every relative error is less than 2 %.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
2006年第6期97-100,共4页
Hydrogeology & Engineering Geology
关键词
热脉冲
包气带
微流速
传导率
含水率
heat pulse
unsaturated zone
soil water velocity
heat conductivity
