A kind of micro tensiometer fast saturator

Abstract

The invention discloses a micro tensiometer fast saturator, comprising a vacuum pumping system, a saturation system and a water storage system. In the invention, the micro tension gauge sensor and the clay tube are respectively fixed on the sensor saturation ring and the mounting hole of the clay tube. In the process of vacuuming, the air bubbles inside the sensor can be discharged through the vibration of the wireless exciter, thereby effectively improving the saturation degree of the sensor. , gradually saturated the clay head. The test device of the invention has simple operation procedures, can quickly and synchronously saturate the sensor and the clay head, and has good saturation effect, which can not only shorten the reaction time for the tensiometer to measure the suction force of the matrix, but also delay the time for cavitation of the clay head with high air intake value. , thereby improving the ability of the high air intake value micro tensiometer to measure the suction force of the matrix in excess of 85kPa.

Description

technical field [0001] The invention relates to a fast saturator device of a micro tensiometer. The device can effectively saturate multiple micro tensiometers with a high degree of saturation, and can effectively improve the ability of the high air intake value micro tensiometer to measure the suction force of the matrix exceeding 85kPa. Background technique [0002] The seepage analysis, shear strength, volume change and settlement calculation of unsaturated soils are closely related to the matrix suction. Therefore, the matrix suction is the basis of the theoretical system of unsaturated soil mechanics, which is of great significance to explain the mechanical properties of unsaturated soils. There are many methods for measuring substrate suction, but compared with other methods, micro tensiometers are not only easy to carry, but also widely used in field, laboratory and model tests due to the short response time of substrate suction equilibrium. In addition, with the adv...

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Problems solved by technology

[0003] 1. The saturation effect of the micro tensiometer is difficult to control

The saturation degree of the traditional syringe saturation method is not easy to control, and often has the problem of low saturation, which results in a longer reaction time for measuring the suction force of the matrix, and will also cause cavitation in advance of the clay head with high air intake value, thereby reducing the micro-tension of the high air intake value Capability of the gauge to measure matric suction over 85kPa

[0004] 2. The saturation efficiency of the micro tensiometer is low

The traditional syringe saturation method can only saturate a single branch in stages, and cannot saturate multiple tensiometers at the same time. It will take a lot of time to saturate more micro tensiometers

[0005] 3. The operability of the micro tensiometer saturation process is poor

The traditional syringe saturation method needs to saturate the tensiometer sensor and the clay head separately, and also needs to rely on manual tapping to discharge the air inside the sensor during the saturation process, which is inconvenient to operate

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