The Application of Bore-hole TV Exploration Technology 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 accurately after grouting. The paper makes detection analysis on the grouting effect of a power plant by bore-hole TV exploration technology. The results show that the distribution of cavity, the development of rock crack before grouting and the state of cavity and crack after grouting can be understood accurately.