Measuring apparatus and measuring method for vertical effective diffusion coefficient of solutes in saturated soil layer
A technology for measuring devices and diffusion coefficients, applied in measuring devices, surface/boundary effects, instruments, etc., can solve problems such as solute migration test errors, test failures, test errors, etc., achieve accurate and reliable measurement results, simple measurement methods, avoid The effect of poor water head
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[0034] Such as figure 1 , figure 2 As shown, a measuring device for the vertical effective diffusion coefficient of a solute in a saturated soil layer, the device includes a main body box 3 of the measuring device, and the main body box 3 of the measuring device is sequentially composed of a water tank 11, a test soil sample area and a solution area from bottom to top, The water tank 11 is filled with quartz sand 12, the test soil sample area is filled with test soil samples 6, and the test soil sample area is uniformly provided with sampling pipes 7, and the sampling pipes 7 vertically pass through the main body box 3 of the measuring device and extend into the test soil samples 6; When carrying out the measurement test, at first, fill the quartz sand 12 and the test soil sample 6 successively in the main body box 3 of the measuring device, seal the sampling pipe 7, add tap water to the solution area until the soil sample is saturated, and then replace the tap water in the s...
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