关键词: 岩体, 可爆性, 投影寻踪, 模拟退火算法, 分级

Abstract: Based on the analysis of influencing factors for rock blastability，the consistent coefficient，acoustic impedance，explosive consumption，and mean fracture distanced of wall-rock are chosen as the criterion index for rock blastability classificationA projection pursuit evaluation model for rock blastability was established and its project direction was optimized by the Simulated Annealing AlgorithmThen the rock blastability can be evaluated and classified according to the index of projectionThe model was applied to the classification of underground rockThe evaluation results showed that this model can avoid the impact of subjective factors on the classificationThe results are accurate and true，thus providing a new proposal to comprehensively evaluate the rock blastability

Key words: Rock-body, Blastability, Projection pursuit, Simulated annealing algorithm, Classification