CAJ | 학술논문

　　在巷道超前探测的方法中，电阻率法由于原理简单、操作方便，有着很好的应用前景。运用三维有限元法对聚焦电流法的超前预报效果进行数值模拟，计算和分析点电源和九点式电源在供相同电流的情况下电场的分布情况。结果表明：九点式布极方式有很好的聚焦能力，聚焦电流法能准确地发现掘进面前方含水异常体。将数值模拟和物理土槽试验进行对比，正演模拟精度符合要求，巷道中的人为干扰对聚焦电流法超前探测没有影响。
　　재항도초전탐측적방법중，전조솔법유우원리간단、조작방편，유착흔호적응용전경。운용삼유유한원법대취초전류법적초전예보효과진행수치모의，계산화분석점전원화구점식전원재공상동전류적정황하전장적분포정황。결과표명：구점식포겁방식유흔호적취초능력，취초전류법능준학지발현굴진면전방함수이상체。장수치모의화물리토조시험진행대비，정연모의정도부합요구，항도중적인위간우대취초전류법초전탐측몰유영향。
Within the roadway advanced detection methods, DC resistivity method has an extensive application because of its simple principle and operation. Numerical simulation of the effect of focusing current on advanced detection was carried out using a three-dimensional finite element method (FEM), meanwhile the electric-field distribution of the point source and nine-point power source were calculated and analyzed with the same electric charges. The results show that the nine-point power source array has a very good ability to focus, and the DC focus method can be used to predict the aquifer abnormality body precisely. By comparing the FEM modelling results with physical simulation results from soil sink, it is shown that the accuracy of forward simulation meets the requirement and the artificial disturbance from roadway has no impact on the DC focus method.