急倾斜煤层顶煤可放性识别的距离判别方法及应用

Distance discriminant analysis method for distinguishing the difficulty degree of top-coal caving in steep seam and its application

探讨了急倾斜煤层放顶煤的工程特点,将距离判别分析方法用于急倾斜煤层顶煤可放性识别问题中,建立了急倾斜煤层顶煤可放性识别的距离判别分析模型.最后,将该模型用于工程实例,识别结果符合实际情况.研究表明,距离判别分析模型分类性能好,识别精度高,误判率低,是急倾斜煤层顶煤可放性识别的一种有效方法.

The engineering characteristics of sub-level caving in steep seam were discussed. The distance dicriminant analysis model for distinguishing the difficulty degree of top-coal caving in steep seam was established through the principle of Mahalanobis＇ distance discriminant analysis. Finally, the model was applied to engineering examples. Distinguishing results are consistent with the actual cases. The study shows that the distance discriminant analysis model has a great classification capability, a high distinguishing accuracy and a lower mistake-distinguish rate, and is a effective method to distinguish the difficulty degree of top-coal caving in steep seam.