条带煤柱及其覆岩破坏灰色关联度分析

Grey Relation Analysis of Strip Coal-pillar and Surrounding Rock Damage

采用灰色关联分析原理和方法,在以往研究影响条带煤柱及其覆岩破坏因素的基础上,利用灰色关联分析法构建了灰色关联度分析评价模型,以量化方法解决了评价指标因素排序问题,得出各影响因素的顺序,最终确定出主要影响因素。研究分析表明,在选取的煤层埋深、煤层开采厚度、开采宽度、煤柱宽度和煤柱强度这5个主要影响因素中,煤层开采深度和煤层开采厚度变化对评价条带开采煤柱稳定的各项因子最敏感,其次是煤柱开采宽度,而煤柱强度以及煤柱宽度的变化影响相对于其他因素要偏小些,清楚地显示出影响条带煤柱及其覆岩稳定的主要因素和次要因素。

Applying grey relational analysis theory and method, grey relational degree evaluation model was set up on the basis of research fruit of strip coal-pillar design and overlying strata damage influence factors. Influence factors were sequenced and main influence factor was obtained. Result showed that among coal-seam buried depth, mining height, mining width, coal-pillar width and strength, mining depth and mining height were the largest, then mining width, coal-pillar strength and width were minor. The sequence clearly showed major and minor factors influencing strip coal-pillar and overlying strata stability.