The utility model relates to a friction test system at bottom of many servo pressurizations of real -time supervision of jumbo size ground body, include conveyor drive system, the vertical equipartition of model power loading servo, frictional force survey system, image acquisition and resolve the system. The vertical equipartition of model power loading servo includes hydraulic pressure post andincreased pressure board, has pressure sensor in the increased pressure board, links to each other with background controller, and the controller links to each other with the servo motor who is connected hydraulic tank, the conveyor drive system includes AC motor, converter and speed watch -dog, frictional force survey system is by answering force transducer and external data receiver to constitute, the image acquisition and the system of resolving comprise high speed camera, slide rail, light, scale and backstage computer. The utility model discloses the deforming and breaking of the ground body under the action of gravity and the jumbo size ration analogue test of evolutionary process can be realized, and different stress field and pair model stress field and the displacement field real-time supervision of normal stress simulation that the model received that await measuring can be changed.