Abstract:

The continuous belt conveyor used in the construction of longdistance inclined shaft has high driving power, great tension of conveyor belt and large deformation in the process of starting due to its load and certain slope. In order to optimize the main design parameters, the optimal starting mode of continuous belt conveyor used for shield tunneling in inclined shaft of Xinjie Mine in Inner Mongolia is studied by dynamic equation and the discrete dynamic model is established. Then the CST soft start system is adopted according to the input acceleration curves; meanwhile 4 common curves including sine, parabola, triangle and trapezoid, and a sine combination curve are proposed; and the equation is solved by Wilsonθ method and the dynamic simulation is carried out by Matlab. The simulation results of 5 different starting curves show that: (1) The design parameters are optimized. (2) The design parameters obtained by using the sine combination curve are the optimal, which can reduce the investment cost of the continuous belt conveyor, and can also provide reference for the design of similar projects.

Key words: inclined shaft, continuous belt conveyor, CST soft start, dynamic model, dynamic simulation, acceleration curve