Test instrument of permeability of research soil

The utility model discloses a test instrument of permeability of research soil, including marriotte bottle and sample tube, the marriotte bottle present position is higher than the sample tube present position, and rubber tube and sample tube's upper portion intercommunication is passed through to marriotte bottle's lower part, compared with the prior art, follow the supreme loaded filter that has set gradually down among the sample tube, circular porous filtering plate and native sample, the upside and the downside of soil sample are provided with first pressure -measuring pipe and second pressure -measuring pipe respectively, it is provided with the 2nd glass pipe to alternate in the loaded filter, and the outer port lower part of the 2nd glass pipe is equipped with the beaker. The utility model discloses can determine the permeability of soil, in the process of the test, the flood peak of a pressure -measuring pipe wherein remains unchanged in addition, simultaneously, still passes through glass tube conne