Testing apparatus for determining rockfall recovery coefficient by considering contact relation and testing method

The invention discloses a testing apparatus for determining a rockfall recovery coefficient by considering a contact relation. The testing apparatus comprises a portal frame, a movable fixing rack, arockfall releaser, a rockfall sample and a slope simulation test bed. The movable fixing rack is arranged on a beam of the portal frame; the rockfall releaser is lifted by two steel wire ropes, and the rockfall sample is lifted by the rockfall releaser. The slope simulation test bed is arranged below the portal frame and comprises a slope simulation box; a slope simulation material and multiple sensors are contained in the slope simulation box; slopes of different shapes, different directions and different gradients can be simulated by slope simulation materials. When the rockfall recovery coefficient in different contact relations is determined, different contact relations between the rockfall sample and the simulated slope are simulated by the testing apparatus, such as point-surface contact, edge surface contac