Geotechnical parameter and property tester capable of simultaneously testing specific yield and osmotic coefficient

Abstract

The invention provides a geotechnical parameter and property tester capable of simultaneously testing the specific yield and osmotic coefficient. The geotechnical parameter and property tester comprises an evaporation-preventing and gas discharge device, an experiment section, a water level observing device, a water supply device with a controllable water head, a water discharge device with a controllable water head and a water head adjusting and fixing device. The geotechnical parameter and property tester has the advantages that the tester is simple in structure, convenient to use, capable of simultaneously and accurately testing the geotechnical osmotic coefficient and specific yield and promising in application prospect; the tester is widely applicable to hydrogeology researches, and the tester can be used as a teaching instrument to help students well understand the testing principles of the specific yield and osmotic coefficient; the tester is applicable to underground water resource balance calculation, phreatic water dynamic prediction, shallow groundwater withdrawal quantity calculation, depth and interval calculation of farmland draining ditches and underground pipes, farmland irrigation and draining calculation, calculation of hydrogeological parameters such as the recharge coefficient from irrigation water infiltration and the recharge coefficient from rainfall infiltration, and various researches related to underground water.

Description

technical field [0001] The invention relates to a rock-soil parameter property measuring instrument capable of simultaneously measuring feed water degree and permeability coefficient, and belongs to the field of rock-soil parameter property measurement. Background technique [0002] Calculation of balance of groundwater resources, prediction of phreatic water dynamics, calculation of recoverable shallow groundwater, calculation of farmland drainage ditches, underground pipe trench depth, distance calculation, calculation of farmland irrigation and drainage, irrigation infiltration recharge coefficient, rainfall infiltration recharge coefficient, etc. In parameter calculation and various studies related to groundwater, water supply and permeability coefficient not only directly affect the reliability of calculation and research results, but also have the characteristics of easy regional synthesis and transfer of parameters. With the increasing shortage of water resources and ...

AI Technical Summary

Problems solved by technology

However, the calibration process of the negative pressure value of the permeable stone is cumbersome, and it is difficult for students to understand the reason for the calibration of the negative pressure value of the permeable stone, and the measured water supply degree is related to the negative pressure value of the permeable stone;

[0005] (2) In the process of measuring the water supply of loose rock samples, some water supply test instruments cannot intuitively show the relationship between the change of water level and the amount of retreating water;

[0008] To sum up, the current Darcy experimental device and the feed water meter can only measure the permeability coefficient and the feed water degree separately, and the measurement process is cumbersome, so there is a lack of a geotechnical parameter tester that can measure the feed water degree and the permeability coefficient at the same time

Images