Multifunctional expansive soil permeation model box

A multifunctional expansive soil permeation model box comprises a box body, the box body is formed by fixedly connecting acrylic plates, first steel plates and second steel plates, the acrylic plates and the first steel plates are alternately arranged on the side faces, the second steel plates are arranged at the bottom, the first steel plates and the second steel plates are welded through iron plates and fixed through bolts, and the acrylic plates, the first steel plates and the second steel plates are sealed through glass cement; a detachable water outlet is formed in a bottom plate of the first steel plate; a water seepage pipe, a soil moisture sensor and a vibrating wire type soil pressure gauge are mounted in the box body. The multifunctional expansive soil permeation model box provided by the utility model is provided with a perfect permeation system and drainage system, so that water can permeate into a soil body more quickly and more uniformly, the state of designed water content is achieved, and the