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1、第42卷第1期煤田地质与勘探Vol.42No.12014年2月COALGEOLOGY&EXPLORATIONFeb.2014文章编号:1001-1986(2014)01-0053-04平煤股份八矿二1煤底板灰岩地热水疏水降压技术1,232王心义，王麒，陈国胜(1.河南理工大学资源与环境学院，河南焦作454000；2.中国平煤神马集团研究院，河南平顶山467000；3.中国科学院大学地球科学学院，北京100049)摘要:疏水降压是降低煤层底板厚层灰岩含水层水害威胁的最常用方法之一。针对平煤股份八矿二1煤底板寒武
2、灰岩水压高、地下水温度高且富水性分布不均一的特点，根据地质构造、隔水层、含水层、水动力场、水温度场、水化学温标、瞬变电磁和直流电法勘探等综合探查信息，分析了寒武灰岩含水层地热水的埋藏和分布规律，并划定了富水异常区；结合计算的含水层疏水降压影3响半径，在西大巷底板布置了7眼寒武灰岩地热水疏水降压孔，7眼疏水孔总涌水量300m/h，277d内，西大巷寒武灰岩水位共下降17.2m，西大巷内空气温度降低2℃；涌出的50℃地热水提至地表可供综合利用。关键词：寒武灰岩地热水，富水异常区，疏水降压，综合利用中图分类号：TD
3、74；P641文献标识码：ADOI:10.3969/j.issn.1001-1986.2014.01.012Thedrainageanddecreasingpressuretechnologyoflimestonegeothermalwaterincoalfloorbasedoncomplexdetectiveinformation1,232WANGXinyi,WANGQi,CHENGuosheng(1.InstituteofResources&Environment,HenanPolytechnicUniv
4、ersity,Jiaozuo454000,China;2.InstituteofChinaPingmeiShenmaGroup,Pingdingshan467000,China;3.CollegeofEarthScience,UniversityofChineseAcademyofSciences,Beijing100049,China)Abstract:Depressurizationbydewateringisoneofthemostcommenmethodstomitigatewaterhazardfr
5、omaquifersun-derseamfloor.ForthecharacteristicsofCambrianlimestonewaterhigh-pressure,groundwaterhigh-temperatureandwater-richheterogeneousdistributionsin2-1coalfloorofPingmeiNo.8Mine,basedoncomplexdetectiveinformationfromgeologicalstructure,confiningbed,aqu
6、ifer,hydro-dynamicfield,hydro-temperaturefield,hydro-chemicaltem-peraturescale,transientelectromagneticmethodandDCelectricalmethod,distributionlawandgeothermalwaterdepthofCambrianlimestoneaquiferarediscussedandanomalyareaswithrichwateraredelimited.Combinedc
7、alcu-lated-radiusofinfluenceindrainageanddecreasingpressureofaquifer,7wellswithdepthof150minthisaquiferare3arrangedincoalfloorofwestmainroadway,thetotalwateryieldofthesedrainagewellsamountto300m/h，andthemeasurecausesthatwaterlevelofCambrianlimestonearelower
8、edby17.2mduring277days,andthatatmospheretemperaturealsodropped2℃℃inwestmainroadway.50geothermalwatercanbeusedcomprehensivelyafterliftingtosurface.Keywords:Cambrianlimestonegeothermalwater;water-richano
