According to the analysis of the feature and origin of unstable coal seam,the article introduces the corresponding methods of developing and mining district preparation,which provide a technological reference for extracting unstable coal seam.

In order to optimize the mining plan design of the standby mining block in Malan Mine and to ensure the design feasible,the mining economic and technology advancing,the paper provided three development plans base on the geological conditions of the standby mining block.

By realizing and applying TS1243 electrical equipments and Promos monitoring system on coal caving face of Tangshan mining company,the paper analyzes the breakdowns and working state of system;presents solving methods.