The common methods for optimizing structure parameters were analyzed and existing problems were also discussed. Then, optimizing mathematical model for approach spacing was set up by using the stochastic medium theory of drawing. Moreover, the calculation formula for drawing step was derived. To evaluate the total technique and economic effects for different stope structural parameters, the calculation formula of recovery rate and dilution rate to stope structural parameters was put forward. Lastly, the new method was compared with the traditional methods of determining stope structure paramet...
