A multiscale adjustable simulation device and method for simulating contaminant transport behavior

Abstract

The application discloses a multi-scale adjustable simulation device and method for simulating contaminant migration behavior, and belongs to the technical field of environmental geotechnical engineering and pollution control test devices. The model box comprises a model box, an external constant-concentration mixing unit, a constant water head unit, a multi-point liquid inlet main pipe and a monitoring system. The model box comprises a narrow-slit liquid distribution bin, a test medium area, an adjustable vertical barrier wall and a narrow-slit liquid outlet bin. An even infiltration boundary is formed through the external constant-concentration mixing unit, the constant water head unit, the multi-point liquid inlet main pipe and the porous pressure equalizing layer on the narrow-slit liquid distribution bin, the simulation under different width and insertion depth conditions is realized through the adjustable vertical barrier wall, and the monitoring unit is used for synchronously monitoring the contaminant migration and related physical parameters. The application can simulate the migration, retardation and breakthrough process of the contaminant near the vertical barrier wall, and is suitable for studying the influence of the barrier wall structure parameters on the contaminant breakthrough behavior.

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