Optimization of mining sequence in the fault-subsiding area of Heidaigou open-pit mine

Abstract

The mining sequence affects the safe and efficient production of mines and the development and economic benefits of mining enterprises.In order to solve the problem of mining sequence during the fault-subsiding area of Heidaigou open-pit mine, three mining methods are proposed based on the coal and rock occurrence conditions, mine production status and equipment types.The evaluation indicators related to the program from the aspects of economy, technology and safety and used the three-dimensional modeling and simulated mining technology, qualitative and quantitative combination to determine the values of each parameter.Finally, The AHP-ideal point method was used to establish a comprehensive evaluation index system model to determine the optimal mining plan.

Keywords

• open pit mine
• fault-subsiding area
• mining sequence
• analytic hierarchy process
• ideal point method