李雅庄井田陷落柱发育特征分析及预测李雄,王丽娟(山西焦煤霍州煤电集团李雅庄煤矿,山西霍州031400)摘要:李雅庄井田内陷落柱与断层较为发育,矿井自建井、生产至今共揭露243处陷落柱,主要分布在二、三、四采区。井田陷落柱密度较大,平均密度为每平方公里69个[4]。本文以观测描述陷落柱的平面形状、大小、柱壁角、充填物的特征、层位、压实程度和含导水性以及围岩的变化,结合李雅庄井田地质构造发育、水文运移规律,通过统计分析寻求井田范围内陷落柱的发育规律,对未开采区域陷落柱展布形式、分布进行预测,从而为矿井安全开采提供指导信息。关键词:井田;岩溶陷落柱;发育特征;水文地质特征中图分类号:TD327文献标志码:A文章编号:1009-0797(2023)02-0075-05AnalysisandpredictionofdevelopmentcharacteristicsofcollapsecolumninLiyazhuangminefieldLIXiong,WANGlijuan(ShanxiCokingHuozhouCoalpowerGroupCo.LTD.Liyazhuangcoalmine,Huozhou031400,China)Abstract:CollapsecolumnsandfaultsarewelldevelopedinLiyazhuangminefield.Uptonow,atotalof243collapsecolumnshavebeenexposed,mainlydistributedinNo.2,No.3andNo.4miningareas.Theaveragedensityofcollapsecolumnsis69persquarekilometer.Basedontheobservationplaneshape,size,descriptionofcollapsecolumnwallAngle,thecharacteristicsofthefillings,horizon,compactiondegreeandthehydraulicconductivityandthechangeofthesurroundingrock,combiningliyazhuangcoalminegeologicalstructuredevelopmentregularity,hydrology,throughstatisticalanalysistoseekdevelopmentruleofthefieldrangeofcollapsecolumnofundevelopedareaofcollapsedistributionform,distributiontomakepredictions,Thusprovideguidanceinformationforminesafetymining.Keywords:minefield;karsticcollapsecolumn;developmentcharacteristics;hydrogeologiccharacteristic1李雅庄井田概况1.1地层及构造李雅庄井田位于霍州煤炭国家规划矿区的东部边缘,出露最老地层为二叠上统上石盒子组的下部(P2s1)分布于井田南西边缘,向东,向北依次出露有上石盒子组中、上部和石千峰组地层。新生界地层不整合覆于上述地层之上。据钻探揭露地层的层序由老至新有:下古生界奥陶系中统上马家沟组(O2s)、峰峰组(O2f);上古生界石炭系中统本溪组(C2b)、上统太原组(C3t);二叠系下统山西组(P1s)、...