关键词: 无底柱分段崩落法, 应用, 优化

Abstract: Many problems like difficult in ventilation, poor blasting effect, serious deformation of roadway, low recovery rate existed in mine process of Hemushan Iron Ore by non-pillar sublevel caving. Improvement and optimization measures were proposed from five aspects, adjustments were done on structure parameters and production technology and so on, good effect obtained.

Key words: Non-pillar sublevel caving, Application, Optimization