Geotechnical variable head penetration test automatic reading test device

Abstract

The invention relates to an automatic measuring-reading test device for a geotechnical variable head permeability test. The automatic measuring-reading test device can meet the code requirements of the geotechnical variable head permeability test and has the characteristics that the precise timed measuring and reading and timely automatic water replenishing can be realized, and the manpower resource can be liberated. According to the technical scheme, the automatic measuring-reading test device comprises a stander, a water supplementing mechanism and a measuring-reading mechanism, wherein the stander comprises a mounting base plate, an upper fixed frame and a lower fixed frame; the water supplementing mechanism comprises a water supply tee joint and a plurality of electromagnetic valves; and the measuring-reading mechanism comprises a water supplementing pipe, a glass water pipe and a test water pipe, the glass water pipe is connected with the electromagnetic valves, the test water pipe is connected with the lower end of the glass water pipe, the lower end of the test water pipe is communicated with a connecting tee joint, the lower end of the connecting tee joint is communicated with a connecting flexible pipe of a soil sample permeameter, the right end of the connecting tee joint is communicated with a connecting water pipe, and the other end of the connecting water pipe is connected with a measuring-reading sensor through a water pipe sensor connecting head.

Description

technical field [0001] The invention relates to a geotechnical variable water head penetration test equipment, in particular to an automatic reading test device for a geotechnical variable water head penetration test. Background technique [0002] The geotechnical variable head permeability test is a routine test for determining the permeability coefficient of fine-grained soil, and it is particularly important in hydraulic engineering. The test work is now all manually operated, the process is as follows: [0003] ① Connect the permeation container with the sample installed to the water head device. Fill the inlet pipe with clean water and fill the permeate container. Open the exhaust valve, stand the container on its side, and remove the air permeating the bottom of the container until there are no bubbles in the overflowing water. Close the exhaust valve and level the permeate container; [0004] ②Let it stand for a period of time under the action of a certain water h...

AI Technical Summary

Problems solved by technology

[0007] ① Due to the different permeability coefficients of various soils, the water level of the test pipeline changes at different speeds, and manual water replenishment is required from time to time;

[0008] ②Regularly measured and read manually, according to the position of the water in the test pipeline to observe the established water gauge scale, so as to read the seepage water level, there are human reading errors, and the consistency of the readings is poor;

[0009] ③Due to the reasons of the first two items, the test work always occupies one human resource

[0010] All in all, the work is cumbersome, manpower-intensive and has human reading errors

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