刘桥二矿二1水平放水试验设计摘要刘桥二矿属华北隐伏型煤田，主采煤层为二叠系下石盒子组4煤层和山西组6煤层。目前刘桥二矿已进入了二水平-600m开采阶段，随着开采水平的延深，煤层底板承受高承压水的威胁也越来越严重。特别是在开采条件下，矿井内断层有可能沟通太灰水和底部奥灰水的联系，造成淹井事故。所以，在该矿井对太灰水进行放水试验，查明矿区水文地质条件和未知参数，就显得很重要了。在综合分析刘桥二矿水文地质资料和充水条件的基础上，本论文作出了针对太灰含水层的放水试验设计。综合放水试验的目的和要求，对放水过程、放水孔和观测孔的平面布置情况放水孔和观测孔的结构分别进行了设计，并阐述了放水试验前期准备工作以及放水资料的整理和分析等内容。由于太灰水高承压的特点，在防压、防喷方面采取了必要的措施，为放水试验的顺利进行提供了参考依据。关键词：高承压；太灰水；放水试验；ABSTRACTNo.2LiuQiaoCoalmineisaconcealedcoalfieldinnorthernChina,inwhichthefourthseamofthePermian-XiashiheziGroupandthesixthseamofPermian-ShanxiGrouparethemaincoalseam,andnowthiscoalminehasenteredintothesecondlevelofminingstageat-600m.Withtheextensionofminingindepth,coalseamfloorismoreandmorethreatenedbyhigh-pressureofconfinedaquifer.Particularlyintheminingconditions,thefaultsinminemaybethetiebetweenlimestonewaterintaiyuanformationandOrdovicianKarstwateratthebottom,causingtheFloodIncident.Therefore,Findingoutthehydrogeologicalconditionsandunknownparametersinminingareasbydewateringtesttolimestonewaterintaiyuanformationisespeciallysignificant.Inthispaper,withthecomprehensiveanalysistheexistinghydrologygeologymatesandwater-filledconditionsoftheNo.2LiuQiaoCoalMine,theauthormakestheexperimentaldesignoftheturnonwateragainstthedewateringtesttolimestonewaterintaiyuanformation.Combinethepurposeandtherequirement,andthendesignthecourseofthetest,thestructureandthelayoutoftheDrillingholesandpeephole,andalsoexpatiatethepreparationsofthetestandsettlementandanalysisofthematerials.Becauseofthehighconfinedpressureofthelimestonewaterintaiyuanformation,necessarymeasuresonpressresistantandblowoutpreventionhavebeentaken,whichprovidesevidenceforthedewateringtest.Keyword:high-confinedwater；limestonewaterintaiyuanformation；dewateringtest；目录1绪论……………………………………………………………………………11.1研究目标………………………………………………………………………11.2选题背景………………………………………………………………………11.3大型放水试验的意义…………………………………………………………21．4研究现状………………………………………………………………………31.5研究内容………………………………………………………………………42矿区概况及地质条件……………………………………………………………62.1矿区概括…………………………………………………………………62.1.1位置及交通…………………………………………………………………62.1.2地形地貌及水文条件………………………………………………………72.1.3气象及地震情况……………………………………………………………82.2矿区地质条件…………………………………………………………………82.2.1井田地层……………………………………………………………………82.2.2井田煤层……………………………………………………………………102.2.3井田构造……………………………………………………………………113水文地质条件………………………………………………………………193.1区域水文地质概况……………………………………………………………193.2井田水文地质…………………………………………………………………193.2.1地表水…………………………………………………………...
