示踪试验在探查灰岩含水层突水通道中应用

第42卷第5期煤田地质与勘探Vol.42No.52014年10月COALGEOLOGY&EXPLORATIONOct.2014收稿日期:2013-06-17基金项目:(41201017)作者简介:(1965).文章编号:1001-1986(2014)05-0050-05示踪试验在探查灰岩含水层突水通道中应用刘满才1，许光泉2，刘丽红2，李之奋1，窦春远1，金修如1(1.淮南矿业(集团)责任有限公司，安徽淮南232001；2.安徽理工大学地球与环境学院，安徽淮南232001):为了查明新庄孜煤矿63301工作面1组煤层底板灰岩含水层的突水通道，分别从太原组灰岩、奥陶系灰岩含水层投放NaCl示踪剂，寒武系灰岩含水层观测孔投放KI示踪剂，在工作面突水点间隔采集样品。经测试分析其浓度随时间变化关系曲线发现：底板太原组灰岩含水层中存在多条小通道和一条大通道，奥陶系灰岩含水层中存在多条小通道，而寒武系灰岩含水层存在2条通道，在不同灰岩含水层通道中，水流速度存在较大差异性，反映了其岩溶裂隙发育非均匀性特点。此外，利用本次突水资料，计算灰岩含水层的参数。为工作面底板太原组灰岩水害治理提供依据。：63301工作面；灰岩含水层；示踪试验；岩溶通道：P641；TD741：ADOI:10.3969/j.issn.1001-1986.2014.05.010ApplicationoftracingtestindetectionofwaterinrushingchannelsinlimestoneaquiferLIUMancai1,XUGuangquan2,LIULihong2,LIZhifen1,DOUChunyuan1,JINXiuru1(1.PanbeiCoalMine,HuainanMiningGroup,Huainan232001,China;2.SchoolofEarthandEnvironment,AnhuiuniversityofScienceandTechnology,Huainan232001,China)Abstract:Inordertofindoutthewaterburstingchannelsinlimestoneaquiferundercoalseamfloorinworkingface63301ofXinzhuangzicoalmine,NaClwasadoptedasthetracerandputintoTaiyuanandOrdovicianlimestoneaquifers.Inthesamecase,KItracerwasputintoobservationwellsinCambrianlimestoneaquifer.Watersampleswerecollectedatintervalsofthewaterinrushpointatworkingface.63301.Accordingtothecurveofrelationshipbetweentheconcentrationandtime,theresultsoftestandanalysisindicatethattherearemanysmallchannelsandalargechannelinthefloorlimestoneaquifersofTaiyuanformation.ManychannelsareinOrdovicianlimestoneaquifer,whileCambrianlimestoneaquiferhasonly2channels.Thewaterflowingvelocityindifferentlimestoneaquiferchannelvaries,showingthedevelopmentalheterogeneityofitskarstfissures.Besides,limestoneaquiferparametersarecalculatedwithwaterinrushdata.TheaboveworkprovidesanimportantreferenceforfurtherstudyonthepreventionandcontrolofwaterhazardsfromTaiyuanlimestonefloor.Keywords:workingface63301;limestoneaquifer;tracingtest;karstchannel[1-3][4-5][6-8][9-11]1研究区背景N40WNEE12°~54(12)13第5期刘满才等:示踪试验在探查灰岩含水层突水通道中应用·51·1Fig.1Distributionofboreholesofinjectedtracerandadjacentobservedboreholes2VIII-ⅨFig.2ThesectionfromtracerinjectingpointtoreceivingpointonlineVIII-Ⅸ63301A110mⅧ-Ⅸ100m1A12.0m17mC3Ⅰ38mC3Ⅰ0~9m3/h0.6MPaC3ⅠC3ⅡC3Ⅲ39.15m44.83mC3Ⅲ250m1.0~1.3L/(s·m)2工作面突水过程20121048006330114105h20m3/h130m3/h(34)A13灰岩地下水示踪试验3.1·52·煤田地质与勘探第42卷363301Fig.3Dynamicchangeofwaterlevelinobservationholesinlimestonebeforeandafterwaterinrushatworkingface63301inXieyicoalmine463301Fig.4Dynamicchangeofwaterlevelinobservationholesinlimestonebeforeandafterthewaterinrushatworkingface63301inXinzhuangzicoalmineandLizuizicoalmineX/uLt(1)LXmum/hth3.2Ⅷ-CⅨ3-ⅢⅥ-CⅦ3-ⅢOⅠ1-2ⅦⅦ4(12)Cl-35~45mg/LNaCl150kg[12](AgNO3)KI63301–812m1表1示踪试验概况Table1Thegeneralsituationofthetracertest/m//kgⅧ-CⅨ3-Ⅲ1721C3Ⅲ/–190.55~–233.84mNaCl150Cl–101011:00Ⅵ–CⅦ3–Ⅲ2366C3Ⅲ/–168.06~–209.39mNaCl150Cl–101110:00OⅠ1–22085O1+2/–95.71~–120.54mNaCl150Cl–101616:00ⅦⅦ2926Ⅶ/–266.25~–275.67mKI30I–10168:003.3a.背景值测试阶段201210610963301Cl–35~45mg/L2~4g/Lb.试验阶段201210101016Ⅷ–C3Ⅸ–ⅢⅥ–C3Ⅶ–ⅢOⅠ1–2NaClⅦⅦKICl–I584结果分析4.1Ⅷ–CⅨ3–ⅢNaCl2Cl–47.96mg/L51.41mg/L(1)104.30m/h88.26m/h(2)Ⅷ–CⅨ3–Ⅲ第5期刘满才等:示踪试验在探查灰岩含水层突水通道中应用·53·5–C3–Fig.5Changeofchlorideioncontentwithtimeoftracingtestinwell–C3–6-C3-Fig.6Changeofchlorideioncontentswithtimeoftracingtestinwell-C3-7O1-2Fig.7ChangeofchlorideioncontentwithtimeoftracingtestinwellO1-28Fig.8Changofchlorideioncontentwithtimeoftracingtestinwell2Cl–5Cl–3hCl–2Ⅵ–CⅦ3–ⅢOⅠ1–2NaCl32Cl–(2)67Cl–2CⅦ3–Ⅲ3OⅠ1–22ⅦⅦ82h4h35.68m/h34.02m/h(8)4.263301130m3/hAquiferTestTheisJacobC3Ⅲ(T)(K)(μ*)[13](3)C3Ⅲ表2试验过程中不同峰值特征参数Table2Differentpeakcharacteristicalparametersinthetracingtest/h/(mg·L–1)/(m·h–1)/h/(mg·L–1)/(m·h–1)/h/(mg·L–1)/(m·h–1)Ⅷ–CⅨ3–Ⅲ16.547.86104.3019.551.4188.26Ⅵ–CⅦ3–Ⅲ5241.6245.505544.9643.026046.0539.43OⅠ1–234.541.1560.4348.545.3442.99ⅦⅦ82h0.016735.68860.01134.02·54·煤田地质与勘探第42卷表3水文地质参数计算结果Table3Calculationresultsofhydrogeologicalparameters(Theis)(Jacob–)T/(m2·d–1)K/(m·d–1)μ*T/(m2·d–1)K/(m·d–1)μ*CⅤ3–Ⅲ4199.356.66×10–71904.239.20×10–6Ⅴ–CⅥ3–Ⅲ2545.672.07×10–51683.744.29×10–5Ⅵ–CⅦ3–Ⅲ92.32.065.92×10–569.61.554.29×10–5CⅢ3–Ⅲ46010.33.05×10–52605.796.66×10–5Ⅷ–CⅨ3–Ⅲ2214.931.81×10–42685.981.42×10–45结语Ⅷ–CⅨ3–Ⅲ2Ⅵ–CⅦ3–ⅢOⅠ1–2Ⅷ–CⅨ3–ⅢⅥ–CⅦ3–ⅢOⅠ1–263301参考文献[1].[J].200836(8)98–102.[2].[J].2010(5)13–18[3]邨.[J].200732(8)818–821.[4].——[J].200937(1)1–11.[5].[M].2005.[6].——[J].201122(6)119–122.[7].[J].200026(5)34–37.[8].——[J].200147(6)653–657.[9].[J].201028(5)28–33.[10].[J].200434(1)102–105.[11].[J].199412(3)40–46.[12].[M].1988.[13].[M].2009.井下定向钻进技术与装备创煤矿井下顺煤层定向钻孔深度新纪录(“”)“”“”1881m53015301520ZDY12000LDBLY3901881m2601m12d210m(梅新)