基于APDL的隧道直流聚焦电场仿真  

Simulation of DC focusing electric field in tunnel based on APDL

作　　者：朱国力[1] 郭千 张春草[1] 

机构地区：[1]华中科技大学机械科学与工程学院,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2015年第12期52-55,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家重点基础研究发展计划资助项目(2013CB035405)

摘　　要：结合隧道直流聚焦地质超前预报电法技术,选取掘进机数个刀头作为主电极,通过刀盘的旋转进行扫描模式的地质超前探测,预测掘进掌子面前方潜在灾害体.采用ANSYS参数化设计语言(APDL)进行二次开发,对聚焦电场进行有限元仿真,求解不同地电条件下的三维电阻率模拟的异常特征,同时观察稳定电流场的变化.结果表明:该方法能实时、直观、准确反映出隧道掘进掌子面前方异常地质体的位置,有效减少旁侧干扰物对探测结果的影响.A new tunnel advanced prediction method was proposed using several disc cutters of tunnel boring machine as center electrodes, and unfavorable geology ahead of tunnel face was predicted when the cutter rotated. Through the secondary development of ANSYS parametric design language （AP- DL）, the simulation of abnormal characteristics for 3D electrical resistivity was discussed under differ- ent ground condition and the change of the electrical field was observed. The result shows that the method can real time and directly reflect the position of bad geology, avoiding the influence on detec- tion results by the side interference.

关 键 词：直流聚焦方法 超前预报 扫描模式 三维电阻率模拟 ANSYS参数化设计语言(APDL) 

分 类 号：P631.325[天文地球—地质矿产勘探]