Abstract: In order to tackle the problem regarding the insufficiency of the capacity of the product surge bunker, Lyuliang Coal Proparation Plant selects the gas film structure in renavation of the esisting coal stockyard based on result of comparison between 2 kinds of coal yards with respectively structural steel structure and gas film structure. Practice shows that the closed gas film yard offers the merits of being short in construction period, low in initial capital cost, intelligent and environmentally-friendly. It warrants application in coal related sector.