【作者】 许颢砾； 邓正栋； 王大庆； 刘志新； 胡龙胜； 王光远；

【Author】 XU Haoli;DENG Zhengdong;WANG Daqing;LIU Zhixin;HU Longsheng;WANG Guangyuan;Defense Engineering College,PLA University of Science And Technology;School of Resources And Geosciences,China University of Mining And Technology;Harbor Consultants Co.,Ltd.;

【机构】 陆军工程大学国防工程学院； 中国矿业大学资源与地球科学学院； 中交第四航务工程勘察设计院；

【摘要】 瞬变电磁法(rEM)已良好地运用于隧道溶腔、巷道采空区和富水区等方面的探测。好的正演模拟是一个探测的基础。利用COMSOL有限元模拟软件建立几何模型,加载交变电磁场,再网格剖分,模拟瞬变电磁重叠回线法对低阻异常体的探测,最终得出3D(磁场空间分布图)、2D(磁感应强度切面图)、1D(多测道剖面图)等多种形式的结果图。可有效地、多维度地、高可视度地反映磁场变化及其探测结果。再利用水槽模型实验进行验证,得出的多测道剖面图与COMSOL模拟出的结果一致,表面COMSOL软件正演模拟法可行,高效,且值得推广。更多还原

【Abstract】 Transient electromagnetic method(TEM) has been using in detecting tunnel cavity,goaf,water zone and so on.Nice forward simulation of TEM is the basis of engineering investigation.Using COMSOL finite element simulation software to set up geometric model,load alternating electromagnetic field,do mesh generation,research on detection of low resistance object based on coincident-loop TEM and draw 3D(Magnetic field space distribution),2D(Magnetic induction intensity profile),1D(Multiple instrument channels profile) and other expressions.COMSOL can simulate process of changing electromagnetic field and result of detection effectively,multi-dimensionally and visually.Then,using physical simulation experiment to verify numerical simulation.Then,the result of physical simulation is consistent with COMSOL numerical simulation.So,COMSOL simulation method is feasible,efficient and popularized.更多还原