Rapid salt elimination test device and method for simulating coastal hydraulic reclamation foundation

The invention discloses a rapid salt elimination test device and method for simulating a coast hydraulic reclamation foundation, and relates to the technical field of soft soil foundation engineering and soil remediation, the rapid salt elimination test device for simulating the coast hydraulic reclamation foundation comprises a test soil box, the test soil box is internally provided with a broken stone hardcore, a permeable geotextile, a clay mud cake layer and fine sand in sequence from bottom to top; a rainfall simulator is mounted on the top surface of the test soil box; the side wall of the test soil box is provided with a plurality of sampling guide pipes for sampling and a drainage guide pipe for draining accumulated water, the sampling guide pipes are arranged at different heights of the test soil box and extend into the clay mud cake layer, and the drainage guide pipe extends into the broken stone hardcore. The simulation experiment of the salt dissolving and discharging mechanism of the salt-contain