A method for detecting the air tightness of ko consolidation instrument

Abstract

The present invention discloses a detection method of the air tightness of a K0 consolidation instrument. Based on a characteristic that a latex balloon filled with water can transfer pressure to various directions, vertical pressure applied by a lever is converted into horizontal pressure; the pressure is transferred to water in a pressure cavity through a rubber ring which is in close contact with the latex balloon; and whether the air tightness of the pressure cavity and pipeline system of the K0 consolidation instrument is judged through judging whether the reading of a dial indicator is stable. According to the detection method of the invention, inconveniences brought by a condition that a three-axis compressometer pressure measuring plate and a pressure sensor are adopted to judge air tightness can be avoided; all components used in the method are common objects and are easy to obtain. The detection method has the advantages of simple operation, greater convenience and high feasibility.

Description

technical field [0001] The invention relates to the field of geotechnical engineering experimental instrument detection, in particular to a K 0 A test method for the air tightness of the consolidation instrument. technical background [0002] K 0 The consolidation meter is an instrument used to measure the coefficient of earth pressure at rest. Under the action of vertical pressure, the lateral pressure of the soil sample is transmitted to the water in the pressure chamber through the rubber ring or latex film, and the lateral pressure of the soil sample can be obtained by measuring the water pressure, so as to calculate the static earth pressure coefficient. Thanks to K 0 The consolidation instrument is simple and reliable. During long-term use, it is often refitted to measure other parameters according to needs, such as the device involved in the Chinese utility model patent "Indoor Test Device for Base Bed Coefficient" with the authorized announcement number CN20455638...

AI Technical Summary

Problems solved by technology

But the current common K 0 The consolidation meter measures with a pressure sensor and cannot apply pressure

To apply pressure using the pressure measuring plate of the triaxial compression instrument, the pressure tube on the pressure measuring plate needs to be connected to the K 0 For the water inlet valve of the consolidation instrument, due to the difference in the design of the instrument, there are often pressure tubes and K 0 The joints between the water inlet valves of the consolidation instrument do not match, and the pressure provided by the pressure measuring plate of the three-axis compression instrument cannot reach K 0 In addition, the reading of the pressure sensor will fluctuate due to factors such as temperature and accuracy, which may cause misjudgment

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