Abstract: The inclined shaft section of a pumped-storage hydropower station has a relatively large slope, and the risk of sliding for Tunnel Boring Machines (TBM) during construction is high. Based on this, a double anti backsliding (ABS) device is taken as the research object. First, the mutual cooperation of various devices under different working modes of the inclined shaft TBM is analyzed, and the mathematical model for the pressing force required for the ABS gripper is established. Second, based on mechanical theory and ADAMS simulation, the structural force analysis of the ABS device is conducted, leading to the conclusion that the hydraulic cylinder's required thrust is highly sensitive to the piston rod extension length. Finally, a numerical calculation platform for the ABS device is developed based on the MATLAB App module, aiming to assist researchers in understanding the pressing force required for the ABS gripper and the thrust that the hydraulic cylinder needs to provide.