土箱形状对隧道前探实验地电场分布影响的仿真研究  

The simulation of effect on the electric field distribution in tunnel ahead exploration by the shape of the soil box

作　　者：张宇[1] 刘东[1] 赵斌[1] 

机构地区：[1]华中科技大学机械科学与工程学院,武汉430074

出　　处：《物探化探计算技术》2016年第1期52-58,共7页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：国家重点基础研究发展计划-"973计划"资助项目(2013CB035405)

摘　　要：对BEAM(Bore-Tunneling Electrical Ahead Monitoring)法实验土箱形状的设计进行了仿真研究,模拟了无限远边界和圆形、六边形、正方形等形状边界的电场分布情况,计算了各种土箱形状对应的电位分布与无限远边界电位分布的差异,最后确定圆形边界且中心位置偏移的土箱形状,可以最大限度地接近实际地电场的电位分布情况。A study on the soil box shape design by simulation for the BEAM method tunnel ahead exploration is carried out in this paper.The electric field distribution of the infinite boundary,round,hexagonal and square shape boundary has been simulated.The differences of the electric field distribution between the infinite boundary and various soil box shape boundary is calculated.We can finally confirm that the soil box with offset square boundary can maximize the conformity to the electric potential distribution of the real geoelectric field.

关 键 词：聚焦电流法 有限元仿真 土箱形状 电位分布 

分 类 号：P631.3[天文地球—地质矿产勘探]