Debris flow groove simulation experiment system in any three-dimensional form and experiment method

The invention provides a debris flow groove simulation experiment system in any three-dimensional form and an experiment method, and the debris flow groove simulation experiment system comprises a supporting device, a model box, a plurality of model cylinders, a cylinder positioning and height adjusting device, a ground surface material laying device, a debris flow storage box and a waste collection pool, the model box is mounted in the supporting device; the plurality of model cylinders are fixedly mounted in the model box; the cylinder positioning and height adjusting device is located at the bottom of the model box and can position and change the height of the model cylinder to form a trench terrain model; the ground surface material laying device is located at the top of the supportingdevice and can cover the upper surface of the model cylinder with materials simulating the trench ground surface. The debris flow storage box and the waste collection pool are arranged on the upstream and the downstream of t