巷道绿泥岩段支护技术的应用

Application of Support Technology in Chlorite Sections of Roadways

当前中国处于工业化高速发展时期,多年来铁矿石供不应求,亟需加大自主开采铁矿石的力度。目前,中国80%以上的铁矿石由深凹露天矿采出,矿山转入地下开采。现阶段,人们对露天转地下开采次生应力场对岩体力学场的影响机理研究不足,露天转地下开采技术研究滞后于生产需求。寻找露天转地下的合理开采方法,是中国今后采矿工作的重点,而研发露天转地下高效开采技术具有重要意义。

At present,China is in a period of rapid industrialization.For many years,iron ore has been in short supply,and it is urgent to increase the intensity of independent mining of iron ore.At present,more than 80%of China's iron ore is mined from deep-pit open-pit mines,and the mines are transferred to underground mining.At this stage,there is insufficient research on the mechanism of the secondary stress field of open-pit mining to underground mining on the rock mechanics field,and the research on the technology of open-pit mining to underground mining lags behind the production demand.Finding a reasonable method for converting open-pit mining to underground mining is the focus of China's future mining work,and it is of great significance to develop high-efficiency mining technology from open-pit to underground.