Study of Full-Space Numerical Modeling of Advanced Exploration in Tunnel With DC Focus Resistivity Method

详细信息   

• 责任者：Zhang Li (School of Geosciences and Info-Physics ; Central South University ; Changsha 410083 ; China) ; Ruan Baiyao
• 刊名：Chinese Journal of Geophysics
• 出版年：2011
• 卷期：54(4)
• 关键词：超前地质预报 ; advance geologic prediction ; 直流电法 ; direct current methods
• 页码：p.1130-1139
• 图表：8 illus., 27 refs.
• 分类号：1600
• issnNo：ISSN0001-5733
• isbnNo：CN11-2074/P

摘要

Using the principle of same current repelling each other, and with reference to the vertical ground resistivity sounding and DC laterlog technology the authors proposed a vertically focused advanced detection scheme on the tunnel face and the wall which is good for tunnel space. Finite element numerical simulation method (FEM) was used to simulate the effect of focused advanced detection method in three-dimensional tunnel space. The results that simulated complex models in the conditions of vertical focused observation showed that the scheme can effectively detect the ill geologic bodies in front and side tunnel.