文档摘要：为了在矿区开采时实现安全便携的透地无线起爆,提出了地上发射端采用密绕小直径线圈的磁感应透地无线起爆方案,并建立了地面发射线圈与地下接收线圈等效耦合电路分析模型,推导了地下接收端负载的电压表达式,用地面发射线圈与地下接收线圈间的互感系数表征了收发线圈间耦合强度的大小.由于地面发射线圈与地下接收线圈间的相对位置关系不是平行共轴,传统基于平行且共轴线圈的互感公式不再适用,本文从磁矢位出发推导出了考虑涡流效应的具有一般位置关系的单匝圆线圈间互感系数的通用表达式.由于地面发射线圈采用横放模式存在爆破盲区,地面发射线圈应采用竖放模式.基于负载电压公式分析了发射线圈半径与匝数、发射信号频率和垂直透地深度对透地起爆系统地下接收端负载电压和水平覆盖距离的影响.仿真结果表明:发射线圈采用竖放模式的透地无线起爆系统的水平覆盖距离可达到200～300m;随着透地深度的增加,系统的水平覆盖距离逐渐降低,但可以通过适当增加发射线圈半径和匝数、降低发射信号频率的方式提高透地无线起爆系统的水平覆盖距离,以满足在不同规模矿区开采应用场景下的透地无线起爆需求.
Abstract：Inordertorealizesafeandportablethrough-the-earth(TTE)wirelessinitiationintheminingareas,aschemebasedonmagneticinduction(MI)ofTTEwirelessinitiationwithsmalldiametercoilsatthegroundtransmitterisproposed,andtheequivalentcoupledcircuitanalysismodelofthetransmittingcoilsonthegroundandthereceivingcoilsundergroundisestablished.Basedontheestablishedcoupledcircuitanalysismodel,thevoltageexpressionofundergroundreceivingterminalloadisderived.Intheexpression,themutualinductancecoefficientbetweenthetransmittingcoilsonthegroundandthereceivingcoilsundergroundrepresentsthecouplingstrengthbetweenthetransmittingandreceivingcoils.Sincetherelativepositionrelationshipbetweenthetransmittingcoilsonthegroundandthereceivingcoilsundergroundisnotparallelorcoaxial,thetraditionalmutualinductanceformulabasedonparallelandcoaxialcoilsisnolongerapplicable.Therefore,thegeneralexpressionofmutualinductancecoefficientbetweensingle-turncircularcoilswithgeneralpositionalrelationshipconsideringeddycurrenteffectisderivedfrommagneticvectorposition.Thesimulationresultsofmutualinductancecoefficientshowthatthereisablastingblindzonewhenthetransmittingcoilsonthegroundareplacedhorizontally,soitcanbedeterminedthatthetransmittingcoilsonthegroundshouldbeplacedvertically.Accordingtotheloadvoltageformula,theinfluencesoftheradiusandturnsofthetransmittingcoils,thefrequencyofthetransmittingsignalandtheverticalpenetrationdepthontheloadvoltageandhorizontalcoveragedistanceoftheundergroundreceivingterminaloftheTTEinitiationsystemaresimulatedandanalyzed.Thesimulationresultsshowthat,thehorizontalcoveragedistanceoftheTTEwirelessinitiationsystemwithtransmissioncoilsusedverticalmodecanreach200-300m.Withtheincreaseofthedepthofpenetration,thehorizontalcoveragedistanceofthesystemgraduallydecreases.However,thehorizontalcoveragedistanceoftheTTEwirelessinitiationsystemcanbeimprovedbyappropriatelyincreasingtheradiusandturnsofthetransmissioncoilsandreducingthesignalfrequencytomeettherequirementsofTTEwirelessinitiationinminingapplicationscenariosofdifferentscaleminingareas.
作者：李晓奂 杨维Author：LIXiaohuan YANGWei
作者单位：北京交通大学电子信息工程学院,北京100044
刊名：电波科学学报 ISTICPKU
Journal：ChineseJournalofRadioScience
年，卷(期)：2024, 39(3)
分类号：TD65+5
关键词：透地通信 磁感应 无线起爆 涡流损耗 互感
Keywords：through-the-earth(TTE)communication magneticinduction wirelessinitiation eddycurrentloss mutualinductance
机标分类号：TN929.53TP391.41TP273
在线出版日期：2024年7月24日
基金项目：国家自然科学基金基于密绕小直径线圈的磁感应透地无线起爆系统性能分析[
期刊论文] 电波科学学报--2024, 39(3)李晓奂 杨维为了在矿区开采时实现安全便携的透地无线起爆,提出了地上发射端采用密绕小直径线圈的磁感应透地无线起爆方案,并建立了地面发射线圈与地下接收线圈等效耦合电路分析模型,推导了地下接收端负载的电压表达式,用地面发射线...参考文献和引证文献
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关键词：透地通信,磁感应,无线起爆,涡流损耗,互感,
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