厚煤层顶煤可放性影响因素分析与评价

Analysis and evaluation on factors influenced to the top coal caving in thick seam

在大量实例基础上,总结出影响厚煤层顶煤可放性最重要的三个因素,即:顶煤整体强度、开采深度和顶板岩性。应用模糊数学的评判原理归纳出单因素隶属度评值表和一种简捷的关系式,并得到实际生产的验证和应用。

Base on the great number of the practical cases,the paper summarized the most important three factors influenced to the top coal caveability in the thick seam and the three factors were the integrated strength of the top coal,the mining depth and the roof lithology.The judgement principle of the fuzzy mathematics was applied to conclude the single factor attached degree evaluation table and a simple relational expression,which have been confirmed and applied to the actual production.