【摘要】 为解决原KUZ-RAM模型在预测中容易出现高估爆破块度及低估其不均匀指数问题，首先采用延伸应用的面积测量法获得块度大小，然后以面积测量法的结果为对比标准，通过对原KUZ-RAM模型增加平均块度和不均匀指数的修正系数进行优化；最后通过实例验证修正后模型对于平均块度及不均匀指数的预测准确性，进而改善原有经验公式中没有考虑岩性现状等问题。研究结果表明：修正后KUZ-RAM模型能够利用岩石系数将平均块度与不均匀指数之间建立联系，且该模型对于爆破效果的评价准确性较高，实用性较强。研究结果可为提高评估露天矿山爆破结果准确性提供一定参考和借鉴。更多还原

【Abstract】 In order to solve the problem that the original KUZ-RAM model is prone to overestimate the blast block size and underestimate the non-uniformity index in the prediction, the block size was firstly obtained by using the extended application of the area measurement method, and then the results of the area measurement method were used as the comparison standard, and the correction coefficients of the average block size and the non-uniformity index were added to the original KUZ-RAM model.Finally, the accuracy of the modified model in predicting the average block size and non-uniformity index was verified by example, and then improve the original empirical formula does not take into account the current state of lithology and other problems The results show that the modified KUZ-RAM model is able to establish a link between average block size and non-uniformity index using rock coefficients, and the model is more accurate and practical for evaluating blasting effects.The research results can provide some reference and reference for improving the accuracy of evaluating blasting results in open pit mines.更多还原