改进可拓评价方法在煤层顶板稳定性评价中应用.pdfVIP

改进可拓评价方法在煤层顶板稳定性评价中的应用 罗东海 孙顺新 张敦虎 万余庆 张光超 牛军强 中煤航测遥感局地质勘察院，陕西西安710054 摘要：煤层顶板稳定性是保障煤矿安全高效生产的重要因素之一，是多项地质因素共同作用 的结果。将影响煤层顶板稳定性主要因素概化为顶板沉积环境、顶板构造特征及项板岩石力 学特征等4大因素，细分为顶板岩石组合方式、岩性差异及层理变化等8个因子，把顶板稳 定性级别分为：很稳定、稳定、基本稳定及不稳定4个级别；采用可拓层次分析法，建立煤 层顶板稳定性评价的可拓层次分析模型，构建可拓对比矩阵，运用基于可能度的区间判断矩 阵排序法建立层次总排序。对某井田煤层顶板稳定性的评价结果显示，该井田5号主采煤层 顶板稳定性级别为稳定，评价结果符合实际情况。该方法具有“可拓学考虑人类思维模糊性 判断”的优点，又可免去传统层次分析法的大量试算工作，是对煤层顶板稳定性综合评价的 一种有益尝试和探索。 关键 词：煤层顶板；稳定性评价；可拓层次分析法；模型 P641.461 A ApplicationofimprovedEAHPonstabilityevaluationofcoalseamroof LUODonghaiSUNShunxinZHANG DunhuWANYuqingZHANGGuangchaoNIUJunqiang InstituteofGeologicalSurvey,BureauofArielPhotogrammetryandRemoteSensingt,Xian710054,China Abstract:Stabilityofcoalseamroofisoneoftheimportantfactorstoensuresafeandefficientcoalproduction. Stabilityresultisthecomplexinteractionsubjectedtoalargernumberofgeologicalfactors.Onlytakingcompre hensiveconsiderationintoevaluationcantheresultbeinlinewiththeactualcomplexgeologicalenvironment. Mainfactorsofcoalseamroofstabilityaredividedintofourmajorfactorsandeightsecondaryfactors.Majorfac torsaresedimentaryenvironment,structuralfeature,rockmechanicspropertyandsoon.Secondaryfactorsarethe combinationofroofrock,lithologydifference,beddingchanges,andsoon.Stabilityrankisdividedintofour grades:superstability,stability,basicallystabilityandinstability.EAHPmodelofstabilityevaluationofcoalseam roofandtheextensioncomparisonmatrixareestablishedbymeansoftheimprovedEAHP(ExtensionAnalytical HierarchyProcess)method.UsingthemethodbasedonjudgmentbypossibilitydegreematrixcangettheSorting order.Evaluationresultsshowthat:thestabilitygradeofmaincoalseam5#roofofthemineisstable.Itistrueand credible.ThemethodnotonlyhasthemeritsofExtensiontoconsiderfuzzinessofhumanthinkingtojudge,but alsoeliminatesalotofspreadsheetworkintraditionalAHP.Thesestudiesareusefulexperimentandexploreto studyoncomprehensiveevaluationof