第42卷第1期煤田地质与勘探Vol.42No.12014年2月COALGEOLOGY&EXPLORATIONFeb.2014收稿日期:2012-09-07:(863)(2011AA050102)作者简介:(1989—)文章编号:1001-1986(2014)01-0079-04趋势面分析法圈定氡异常张玲玲,刘鸿福,张新军,孙二虎,李峰,王闻贵(太原理工大学矿业工程学院,山西太原030024):测氡技术能有效圈定煤炭气化燃空区范围。为了准确圈定氡异常的位置和范围,采用趋势面分析方法,以不同次数的多项式拟合氡元素的整体分布趋势;基于拟合度分析和F分布检验确定最佳趋势面多项式的次数,在此基础上进行残差(剩余)分析,识别局部异常,进而圈定氡值异常范围。以内蒙乌兰察布新奥集团煤炭地下气化燃空区测氡数据为例,验证了该分析方法在圈定地下气化燃空区范围方面的可行性。结果表明:该方法圈定的氡异常与验证钻孔点吻合程度好,明显优于使用传统方法圈定氡异常的方法,为低放射性地区氡异常的圈定提供了一种快速、简单并且有效的方法。:氡异常;趋势面分析;拟合度;残差:P631.6:ADOI:10.3969/j.issn.1001-1986.2014.01.019DelineatingradonanomaliesbythetrendsurfaceanalysisZHANGLingling,LIUHongfu,ZHANGXinjun,SUNErhu,LIFeng,WANGWengui(CollegeofMiningEngineering,TaiyuanUniversityofTechnology,Taiyuan030024,China)Abstract:Radondetectiontechniquecaneffectivelydelineatetheextentofcombustionspaceofundergroundcoalgasification.Inordertoaccuratelydelineatethepositionandrangeofradonanomaly,theauthorsusedtrendsur-faceanalysis,employeddifferentdegreesofpolynomialtofittheoveralldistributiontrendofradonelement,basedonthefittinganalysisandFdistributiontest,determinedthedegreeofpolynomialofthebesttrendsurfaceusedtodelineateradonanomaly,andthenanalyzedtheresidual(surplus),recognizedlocalanomaliesandultimatelyde-lineatedtherangeofradonanomaly.Exemplifiedbytheradondataobtainedinthecombustionspacearea(CSA)ofundergroundcoalgasification(UCG)inWulanchabu,InnerMongolia,thispaperhasvalidatedthefeasibilityofthemethodindelineatingtheCSAofundergroundcoalgasification.Studiesshowthattheradonanomaliesdelineatedbythismethodisobviouslysuperiortothetraditionalmethod,coincideswellwiththeverifieddrillingpointsandthismethodisrapid,simpleandeffective,canbeappliedinlowradioactivearea.Keywords:radonanomaly;trendsurfaceanalysis;degreeoffitting;residualdifference()[1-4]1.52[5][6-8][9][10][11][12][13]()1趋势面分析原理3·80·煤田地质与勘探第42卷()()()3iiiiZTNe=++(1)TiZiNieiZiTi△Zi()Zi△ZiTi()2实例分析2.13×32.2ni(xi,yi)Zi(i=1,2,3,4,,n)201234ˆ(,)+Zxyaaxayaxaxy=++++2356nnayaxay++⋅⋅⋅+(2)ai(i=0,1,2,3,4,,n)2.2.1选取的原则R22100%1100%[]SSRSSERSSTSST=×=−×(3)21ˆ()niiSSRzz==−∑21ˆ()niiiSSEzz==−∑21()niiSSTSSESSRzz==+=−∑znziiˆiziR2knkR2nR2kR2nσnσkR2k[14]6R240%-60%[15-16]F//(1)SSRbFSSEnb=−−(4)b(a0)nF(bn―b―1)αFFαFFα,2.2.2趋势面次数的确定1~5kR2(1)12R227.98%第1期张玲玲等:趋势面分析法圈定氡异常·81·1Fig.1TherelationshipbetweenthetimesoftrendsurfaceanddegreeoffittingF192α=0.05F0.05(5,186)=2.21(4)F=14.45FF0.05(5,186)2.3()(1.52)1.5646.11(2)323122Fig.2Radonanomalyareadelineatedbythethetraditionalmethods3Fig.3Radonanomalyareadelineatedbythetrendsurfaceanalysis23(10)101111103结论a.b.c.参考文献[1].[J].199722(4)402−405.·82·煤田地质与勘探第42卷[2]KARINEMPMICHELB.Radon,heliumandCO2measure-mentsinsoilsoverlyingaformerexploitedoilfield,Pechelbronndistrict,Bas-Rhin,France[J].JournalofEnvironmentalRadioac-tivity2010101(10)835−846.[3].[J].200630(4)289−292.[4]AMPONSAHPBANOENG-YAKUBOBANDAMA.Soilradonconcentrationalongfaultsystemsinpartsofsoutheast-ernGhana[J].JournalofAfricanEarthSciences200851(1)39−48.[5].ANN[M].1999.[6].[J].201236(2)202−207.[7].Surfer[J].200743(2)72−75.[8].2[J].201034(3)340−343.[9].[J].200019(3)225−228.[10].[J].201131(2)155−158.[11].[J].199219(5)14−17.[12].[J].199719(3)46−50.[13].[J].2009(11)81−85.[14].[J].199440(1)33−38.[15].[M].2008.[16].[M].1982.中国地质学会、中国煤炭学会煤田地质专业委员会中国煤炭工业安全科学技术学会水害防治专业委员会煤炭工业技术委员会煤矿防治水专家委员会2014年煤矿安全高效开采地质保障技术研讨会暨征文通知(第1号通知)20148—10会议主题内容12345678论文征集与学术交流形式1()232013430()(Email)42013515(2)会议筹备组联系方式E-Mailzhangzhe@cctegxian.comTel029-81778018;13991101620Fax029-81778119E-Mailheyuan@cctegxian.comTel029-8786210613991894645Fax:029-87854391