南芬露天铁矿高陡边坡破坏模式研究

Research on Failure Mode of High and Steep Slope in Nanfen Open-pit Iron Mine

以南芬露天铁矿下帮高陡边坡为例进行理论研究,基于对该露天铁矿边坡工程地质的认识,深入研究边坡岩体的变形和破坏情况,分区对其节理进行调查统计,确定出优势节理,并根据边坡优势节理的分布组合关系,判定出该露天矿采场边坡的变形破坏模式,分析出其稳定状况和预见发展的变化趋势。分清岩体高边坡的破坏模式,有利于掌握它的滑动方向、规模大小、滑坡形态和滑坡机理;再对所研究边坡有针对性地采取可靠有效的加固、防护及监测措施,对保证露天矿高陡边坡的稳定性以及露天矿山可持续发展具有重要的社会及经济意义。

With the high and steep slope of Nanfen Open-pit Iron Mine as the support to make the theoretical research,and based on the understanding of the engineering geology,the deformation and failure of slope rock mass is studied deeply,and the statistical survey on its joints are made by the partition to determine the failure modes of the stope slope and analyze the stability status and the development trends.So,if the failure mode is confirmed distinctly,the landslide＇ sliding direction,size,shape and its mechanism will be all clear.And then the slope is reinforced,protected and monitored pertinently.It has important social and economic significance in ensuring the stability of high steep slope and keeping sustainable development of open pit mine.