Abstract: In order to improve rate of recovery and reduce waste of resource, author had researched stagnant coal reserve within leasing area of Panyi colliery. Furthermore, the stagnant coal reserve file had already been established. Stagnant coal reserve exploitation had been commenced after feasibility study done. The annual output had boomed from 4.6 to 5 million tons. Through the measures above, the rate of recovery had been increased and panel replacement difficulty had been alleviated simultaneously.

Key words: stagnant coal reserve, panel replacement, recovery rate, feasibility study, plan optimization