关键词: 错层位, 无煤柱开采, 设计技术, 立体化开采, 负煤柱

Abstract: Fully mechanized mining, has been using the adjacent working face roadway layout of roadway system in the same layer, usually rectangular setting between working face coal pillar, the coal industry project generally set up 5 meters of coal pillar for mining without coal pillar. The end of the system to solve the long-standing lost coal in the top coal roadway layout, is not conducive to driving, broken top coal and gas easily lead to fire difficult problems, in order to achieve complete mining without coal pillar in the true sense,it based on the design principle of stagger gateroad mining method, put forward to the negative coal pillar design technology, according to the different angle of coal seam conditions for two types of negative stagger coal pillar design and scheme has been successfully applied.The results show that the negative stagger coal pillar design, is conducive to the realization of non coal pillar caving mining technology, the mining technology realize the upgrade.