摘要
在天然河道中，使用在线声学多普勒流速仪测量实现水环境污染物通量进行在线监测；选取了一个回波信号稳定的断面，并在流速紊动较小的若干测量区间段进行指标流速段的选取；通过走航式声学多普勒流速剖面仪进行了走航测量。通过实验数据回归分析，结合水位与断面的动态关系，给出断面流量与流速、水位之间的经验公式，实现对在线仪器的参数标定。研究结果旨在为天然河流污染物通量的在线监测的准确测量提供技术参考和应用范例。
In a natural river of Guangzhou, the pollutant flux was monitored by online acoustic Doppler flow monitor. A river section in which the echo signal was stability was selected and then the representative flow-rate of several intervals was selected in those sections where turbulent flow was small. The flow-rate was measured by acoustic Doppler flow monitor. Through the regressive analysis of experimental data, an empirical formula for flow-rate, water level and flow-rate of river section were given, combined with the dynamic relationship between water level and flow-rate of river section. It had reference value for on-line monitoring of natural river flux and provided an example on how to improve the accuracy of pollutant flux.
出处
《现代科学仪器》
2017年第2期72-77,共6页
Modern Scientific Instruments
关键词
污染物通量
多普勒流速仪
标定
pollutant flux
acoustic doppler flow monitor
formula-calibrating
