Apparatus for measuring soil permeability coefficient
A soil permeability coefficient and soil technology, which is applied in the field of devices for measuring soil permeability coefficient, and achieves the effects of low cost, high water head height and remarkable technological progress
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Embodiment 1
[0021] Such as figure 1 , figure 2 , image 3 and Figure 4 As shown, a device for measuring soil permeability coefficient of the present invention includes a support 1, a first piezometric tube 2, and a second piezometric tube 3 columns, and both the first piezometric tube 2 and the second piezometric tube 3 are plexiglass tubes , wall thickness 1mm, inner diameter 6mm, also includes a hollow column 4, described hollow column 4 is a plexiglass column, wall thickness 1cm, inner diameter 20cm, height 1.7cm, the upper end opening of described hollow column 4, so The hollow column 4 is composed of an upper half and a lower half, and the upper half and the lower half are connected by a flange 7. The wall thickness of the flange is 1 cm, and there are 12 symmetrical The holes are connected with screws, there is a latex pad between the two flanges, the thickness of the pad is 1cm, and the pad also has 12 holes, the spacing between the holes is consistent with PVC, and the upper ...
Embodiment 2
[0030] Utilize the present invention to measure the clay of a construction site in Wujiang City. By crushing the clay and passing through a 16-mesh sieve, 18 liters of mixed soil is prepared, wherein sandy soil accounts for 5%, and the sandy soil and clay are mixed evenly, and the experimental parameters are obtained under the smallest constant water head. as follows:
[0031] Experimental parameters of clay containing 5% sand
[0032]
[0033] From the above test parameters, according to the formula Calculate k=4.8x10 -6 cm / s.
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