Abstract: Aiming at the intensely expansion of coal given chamber floor for 214 coal bunker affected by water in XiaShijie mine，the wall-mounted bunker was newly designed. The self-bearing system of wall-mounted bunker that was composed by I-beam joists，steel joist bracket of bunker body with fixed anchors and self-locking bearing anchors bear the full weight of coal bunker by utilization of bunker surrounding rock and make the dislodgment of bearing structure at the bottom of coal given chamber be realized. While using electroslag pressure welding，high-strength impact resistant materials and other advanced technology and new materials，the overall process of bunker wall-mounted was improved，the construction time of bunker was shorten，and the cost of construction and maintenance for coal given chamber also was reduced. Field testing proved that reliable，obviously technical and economical，the wall-mounted bunker is of good application in similar geological conditions.