Simple apparatus used for tensiometer saturation

Abstract

The invention discloses a simple apparatus used for tensiometer saturation, which is composed of a saturation chamber 11, a saturation chamber seal cover 6 and a tensiometer fixed plate 7. The saturation chamber is a cone-type cavity processed by a cylindrical form stainless steel block 5; an air exhaust pore 2 is arranged on the upper part of the cone-type cavity; an air exhaust pore 1 and an watering pore 3 are respectively arranged at the left part and the right part of the cone-type cavity; the diameter of three pores are equial; the saturation chamber seal cover 6 is connected at the bottom end of the saturation chamber, the tensiometer fixed plate 7 is inserted at the central section of the seal cover; and a tensiometer installing hole is arranged on the tensiometer fixed plate 7. According to the invention, four steps of vacuum-pumping, water filling, water seepage stone saturation and water feeding are carried out for tensiometer saturation, and the simple apparatus has the advantages of material saving, economic and practical performances, easy dismounting and good saturation effect.

Description

technical field [0001] The invention relates to an indoor soil mechanics experiment pumping saturation device, in particular to a simple device for tensiometer saturation. Background technique [0002] Due to the existence of air pressure in unsaturated soil, there is suction in the soil, and the suction is equal to the pore air pressure u a Subtract the pore water pressure u w . Therefore, in unsaturated soil mechanics, suction is a core factor affecting soil properties, and suction measurement is also a core issue in the study of unsaturated soil mechanics. Among the existing measuring technologies, the tensiometer is a widely used technique to measure the suction force. [0003] It is worth noting that during the production process of the tensiometer, only the tightness and firmness of the tensiometer can be guaranteed, but the permanent normal operation of the tensiometer cannot be guaranteed. The reason is that in the tensiometer, there is an aquifer between the mea...

AI Technical Summary

Problems solved by technology

However, during the process of initial vacuuming and infiltration, the air will re-enter the saturation chamber, and the air will dissolve in the water again during the pre-pressing process, which will affect the saturation effect

In addition, the design of most tensiometer saturation devices is relatively complicated and cumbersome, or the design is too large and bloated, which takes time and effort during use; some saturation devices even have fatal defects such as air leakage and water leakage, which affect the saturation effect of the tensiometer

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