Abstract:So far, many domestic mining enterprises for the equipment allocation and replacement is still based on the use of technical life principles, ignoring the efficiency of the equipment and the relationship between life and operating costs. In order to reduce the operation cost and improve the economic benefit of mine, basing on the principle of dynamic programming, the optimization model and algorithm of updating strategy for single equipment in mine life are established, and the optimal replacement strategy of the single equipment is obtained. Taking Nanfen open pit excavator equipment as an example, using the established model algorithm, the optimal replacement strategy of the single equipment in the mine production plan is obtained, which provides a reference for the renewal of equipment in the process of mine operation.