Abstract:

All of the undergroundmines , the collection of bottom const ruction of block mining method has been wildly used ,but it is very difficult to mine cap-sill pillar in safety , so how to select the appropriat exploitation method and make the cap-sill pillar mining safely and efficiently is a primal problem for mining engeers. Now J iaojia Gold Mine have successed in this ,and the result s is worth to be referenced for others.

Key words: cap-sill pillar of stope, safety, mine