Device and method for applying high-strength seepage condition in test model box

The invention discloses a device and method for applying a high-strength seepage condition in a test model box, the device comprises a model box, a first circulating water pump, a second circulating water pump and a water source water tank, the interior of the model box is hollow, and two steel plates with uniform small holes are welded in the model box; the model box forms the drainage buffer chamber, the main body seepage test chamber and the water storage buffer chamber through steel plates, and a layer of permeable stone is attached to the steel plates on the inlet sides of the water drainage buffer chamber, the main body seepage test chamber and the water storage buffer chamber. The problem that a high-strength seepage condition is difficult to apply is solved by arranging the variable frequency pump, in consideration of the adverse effect of non-horizontal seepage on the test in the seepage process, water pressure with the constant water level is set on the upper portion of the test soil body, vertical