Polluted soil body suction and pore solution concentration measuring method and device

The invention provides a polluted soil body suction and pore solution concentration measuring method and device. The method comprises the steps that a standard sample is prepared, a calibration test is performed, a fitting curve is calibrated, sample suction is controlled, data is recorded and analyzed, and the sample suction and the pore solution concentration are calculated. The device comprisesa top cover, a soil column chamber, a base, a chemical solution circulating system, a gas circulating system and a data acquisition system. A suction in soil is accurately controlled by adopting a dialysis method and a gas phase method; a corresponding matrix suction and an osmotic suction of different chemically polluted soil bodies under different water contents can be measured; and a TDR technology is adopted to determine the water content of the soil body and the concentration of the pore solution, combined determination of the suction in the soil and the concentration of the pore solution can be realized accordi