大坝小流量渗流量仪的研制

Research on the Small Flow Seepage Meter for Dams

渗流量监测是大坝安全监测的重要项目,目前对于小于1 L/s的渗流量的监测主要采用人工测量的方法,该方法费时费力,而且无法实现远程在线实时监测,为此,设计了一种基于容积式测量原理的小流量自动化在线监测渗流量仪。通过将测量部件与引流部件分离设计,避免了因渗流流体中含有的粉末状态杂质敷积在测量容器内,而影响测量仪器长期稳定性及可靠性差的问题,采用结构的联动设计、消波浪设计和电路设计,简化了仪器结构,避免了波浪对测量精度的影响,通过长期试运行及人工对比测量,证明了该仪器具有测量精度高、长期稳定性好等特点,适合大坝渗流的小流量、多杂质、潮湿等环境的自动化在线监测,节省了人力物力,具有很好的推广应用价值。

Seepage flow monitoring is an important project of dam safety monitoring.At present,manual measurement method is mainly used to monitor the seepage flow less than 1 L/s,which is time-consuming and laborious,and cannot realize remote online real-time monitoring.Therefore,a small flow automatic online monitoring seepage flow meter based on volumetric measurement principle is designed.Through the design of the measuring circuit,the influence of the structure of the instrument on the stability of the measuring device is avoided.Manual comparative measurement proves that the instrument has the characteristics of high measurement accuracy and long-term stability.It is suitable for the automatic on-line monitoring of dam seepage in small flow,multi-impurity and humid environment.It saves manpower and material resources and has good application value.