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1、MechanicalEngineeringandTechnology机械工程与技术,2015,4(3),198-208PublishedOnlineSeptember2015inHans.http://www.hanspub.org/journal/methttp://dx.doi.org/10.12677/met.2015.43022SoilTroughExperimentalStudyBasedontheFocusedDualFrequencyInducedPolarizationMethodinAdvancedDetectionofCoalRoadwayYouZhou,Yiming
2、Lv,JintaoZhang,ZhiminLiu,XigaoLiu,MiaoWuChinaUniversityofMiningandTechnology(Beijing),BeijingEmail:zhouy0208@126.comrdthrdReceived:Sep.3,2015;accepted:Sep.16,2015;published:Sep.23,2015Copyright©2015byauthorsandHansPublishersInc.ThisworkislicensedundertheCreativeCommonsAttributionInternationalLice
3、nse(CCBY).http://creativecommons.org/licenses/by/4.0/AbstractFocuseddualfrequencyIPinstrumenthasbeendesignedandfabricatedbasedontheprincipleoffocuseddualfrequencyinducedpolarizationmethod.Thenweestablishedsoiltroughexperimentplatformandstructuredtheabnormalwaterbearingbodybysimulatingconditionsof
4、thecoalmine,thedetaileddesignprocessofexperimentplatformisgiven.Basedonspecialelectrodelayoutmodethattheelectrodeisperpendiculartotheroadwaysection,ontheconditionofnodeflection,wegottheapparentamplitudefrequencydatawithandwithoutabnormalwaterbear-ingbodybychangingthebuckingcurrentratioandtherelat
5、ivepositionbetweenthetwomea-suringelectrodes.Andweobtainedthebestbuckingcurrentratioandmeasurementelectrodepositionundertheseconditionsaccordingtodataanalysis.KeywordsAdvancedDetectionofCoalRoadway,FocusedDualFrequencyInducedPolarizationMethod,SoilTroughExperiment,ElectrodeLayoutMode,ApparentAmpl
6、itudeFrequency聚焦双频激电法煤巷超前探测土槽实验研究周游,吕一鸣,张金涛,刘志民,刘希高,吴淼中国矿业大学(北京),北京文章引用:周游,吕一鸣,张金涛,刘志民,刘希高,吴淼(2015)聚焦双频激电法煤巷超前探测土槽实验研究.机械工程与技术,3,198-208.http://dx.doi.org/10.12677/met.2015.43022周游等Email:zhouy0208@126.com收稿日期:2015年9月3日;录用日期:2015年9月16日;发布日期:2015年9月23日摘要基于聚焦双频激电法原理设计并制作了聚焦双频激电仪,模拟井下环境建立了土槽实验台并构造了含水
7、异常体,给出了实验台的详细设计过程。基于垂直于煤巷断面的特殊布极方法,在无偏转条件下,通过变换屏流比和两测量电极的相对位置关系,测得在有无含水异常体下的视幅频率数据。根据数据分析得到了此条件下的最佳屏流比及最佳测量电极位置。关键词煤巷超前探测,聚焦双频激电法,土槽实验,布极,视幅频率1.引言目前用于煤巷综掘超前探测的方法均存在一定的不足,主要表现在:探测准确率低、方向性差、实时性差、效率低、成本高、抗干扰能力差等突出问题[1]。因此