Application of EH-4 Conductivity Imaging System in Detection of Grouting Effects in Goaf Area

The goaf governance engineering has unique concealment and complexity. It is very hard to understand the grouting effect intuitively after grouting. The paper makes detection analysis on the grouting effect of the third phase project of a gangue power plant by EH-4 conductivity imaging system, and gives the interpretation basis, data quality control method and data analysis method of EH-4 conductivity imaging system which used in detection of grouting effects.