Abstract: To maximize the mining benefits of the deposit，in view of the complex engineering geolog⁃ ical conditions at the deep part of Sanguikou，3 mining sequence planning schemes for the ore bodies are proposed. Through economic，technical and safety analyses，a comprehensive evaluation is conducted us⁃ ing the analytic hierarchy process and fuzzy mathematics theory，thereby the optimal mining scheme is abtained. The hierarchical analysis model was used to compare various factors，construct a judgment ma⁃ trix，and then calculate the weight indicators of each factor. Combined with the fuzzy mathematics method， an evaluation grade matrix was constructed，and the comprehensive evaluation values of each scheme were calculated successively. Finally，the mining scheme suitable for the deep engineering conditions of Sangui⁃ kou mining area was selected，starting with the 1st steps of the ore bodies within the 494 m and 514~533 m sections，filling and then mining the 2nd step ore bodies，and considering the 566 m section as a whole for subsequent mining. This scheme avoids the setting of horizontal pillars，improves the ore recovery rate，and helps the deep mining of the Sanguikou mining area to achieve production and stable production.

Key words: deep ore bodies, mining sequence planning, scheme optimization, analytic hierarchy pro? cess, fuzzy mathematics, comprehensive evaluation