Characteristics of pressure measuring tube

Piezometric tube is a kind of pore water pressure instrument commonly used in seepage and seepage pressure monitoring. Because of its simple structure, convenient observation, reliable measured value and durability. It is widely used in monitoring the uplift pressure of dam foundation, seepage around the dam, saturation line of earth rock dam and groundwater level in other specific occasions. The water level of piezometric pipe can be observed manually, such as sounding bell and electric water level gauge, or telemetered, such as telemetry water level gauge.

In recent years, the telemetry osmometer is also put into the bottom of the piezometric pipe to measure the water column height, which is converted into the water level of the piezometric pipe, and automatic monitoring can be realized. The design, construction and management of piezometric tubes are introduced or stipulated in detail in the dam safety monitoring specifications and relevant professional books. In the time work, the safety monitoring workers have also created many effective methods and experience, which is also worth learning and popularizing.