第35卷1期2023年1月中国煤炭地质COALGEOLOGYOFCHINAVol.35No.1Jan.2023doi:10.3969/j.issn.1674-1803.2023.01.12文章编号:1674-1803(2023)01-0068-06矿井瞬变电磁法在峰峰某矿超前探测的实践分析关民全(中国煤炭地质总局水文地质工程地质环境地质勘查院,河北邯郸056004)摘要:矿井瞬变电磁法作为煤矿防治水中最常用的物探方法,在实施过程中经常受到探测现场一些环境干扰因素的影响,降低了探测结果的准确度。以峰峰矿区为例,针对井下巷道中常见的干扰因素,通过现场对比分析总结得出以下经验:在井下金属环境设施中,探测地点的掘煤机、液压柱、底板上的钢轨等体积较大的金属良导体对瞬变电磁探测干扰严重,应尽量撤离或采取相应的措施避开,而锚杆、锚网、锚索、锚网带支护、工字钢等体积较小的金属物体对瞬变电磁探测的干扰较小,在实际应用时可以忽略不计。通过排除干扰等措施,利用多种观测系统所探测的成果进行综合分析、相互验证,可以提高物探资料解释的准确度,对煤矿的防治水工作起到有效的指导作用。关键词:瞬变电磁法;煤矿井下;干扰因素;防治水;观测系统中图分类号:P631.3+25文献标识码:AAnalysisofMineTransientElectromagneticMethodAdvancedDetectionPracticeinFengfengMiningAreaCoalmineGUANMinquan(Hydrogeological,EngineeringGeologicalandEnvironmentalGeologicalExplorationInstitute,CNACG,Handan,Hebei056004)Abstract:Theminetransientelectromagneticmethodisamostcommongeophysicalprospectingmeansincoalminewatercontrol.Dur-ingimplementationprocesseswillbefrequentlyimpactedbysomesiteenvironmentalinterferencefactors,andlowereddowndetectionaccuracy.TakingtheprospectinginFengfengminingareaasanexample,consideringcommoninterferencefactorsinundergroundroadways,throughsitecomparativeanalysishassummedupfollowingexperiences.Withinundergroundmetalenvironmentalfacilities,detectionsiteshearers,hydraulicsupporters,floorsteelrailsetclargevolumefavorablemetalconductorswillimpacttransientelectro-magneticdetectionseriously,shouldbewithdrawnasfaraspossible,ortakenappropriatemeasurestoavoid.Whilesuchasanchorrod,anchornet,cableanchor,steelbeltandanchornetsupportandI-beametcsmallervolumemetalobjectshavelessimpactontran-sientelectromagneticdetection,thuscanbeignoredinpractices.Th...
