关键词: 推移式滑坡, 模型试验, 数值模拟, 推力加载

Abstract: The method of loading in landslide physical model test is often related with the prototype. In this research we applied driving force at the back of the slope model to simulate the deformation failure of landslide caused by thrust load. To verify the feasibility of this method, we took simplified rigid slip mass for example and analysed the driving force loading and the inclined loading which are commonly used in model test for comparison. Results show that the back force loading could also change the anti-sliding safety factor of rigid slip mass continuously. Furthermore, we conducted numerical simulation and physical model test to research the stress field and strain field of the slope model subjected to back force already. Results reveal that as the force applied at the back of the slope model increases, the shear failure of slope expands gradually from the back of the slope model to the front until the shear plane penetrates through the slope and the slope begins to slip. This failure process is consistent with the failure process of landslide caused by thrust load. The method of loading driving force is verified to be feasible in the simulation of landslide caused by thrust load.

Key words: landslide caused by thrust load, model test, numerical simulation, driving force loading