眼前山铁矿北帮滑体变形移动规律的监测研究

Monitoring Research on the Law of Deformation and Movement of the North Wall of Yanqianshan Iron Mine

鞍钢眼前山露天铁矿北帮中上部边坡由碳质千枚岩和绿泥千枚岩等软岩构成,在开采卸荷及大气降雨的作用下高差约110m的岩体产生整体大面积变形及开裂,通过地表位移监测确定了岩体的变形范围、滑移趋势及与降雨显著相关的特点。叙述了鞍钢眼前山铁矿北帮滑体变形监测的具体情况,总结了变形区滑移规律。采取了相应的治理对策,保证了矿山的生产安全。

The upper-medium part of the north wall of Ansteel Yanqianshan Iron Open-Pit Mine is composed of soft rocks such as carbonaceous phyllite and ehlorite-phyllite and a large area deformation and cracking of about 110m rockmass have been formed due to mining unloading and rainfall. The deformation scope, sliding trend and significant rainfall-related features of the roekmass are determined by surface displacement monitoring. The deformation monitoring of the sliding body, the sliding law of the deformation zone and the corresponding measures taken to ensure the production safety are described.