蒙库铁矿南帮滑坡灾害治理技术研究

Study on landslide disaster control technology in southern slope of Mengku Iron Mine

滑坡是露天矿山主要的地质灾害之一,给人类的生命财产造成了巨大的损失。研究了蒙库铁矿区的边坡地质特征,分析了滑坡区域破坏模式和潜在危害,认为滑坡模式表现为平面破坏,局部存在楔形破坏的可能。研究了滑坡区域边坡稳定性,沿走滑坡向在南帮199线—207线滑坡体上设置测量了3条主剖面,计算得出了南帮不同平台的稳定性。给出了滑坡体加固治理方案,主要为清理散体、危岩体,长锚杆、预应力长锚索、钢轨桩、框架梁综合锚固加固,破碎区域喷锚网封闭,坡体深层排水孔、周边截排水沟等。研究为相同地质条件下滑坡地质灾害的治理提供了参考。

Landslide is one of the main geological disasters in open-pit mines,which has caused huge losses to human life and property.The geological characteristics of the slope in Mengku Iron Mine area were studied,and the regional failure mode and potential hazards of the landslide were analyzed.The stability of the slope in the landslide area was studied.Three main profiles were set up and measured on the landslide mass of southern slope 199-207 line along the landslide direction,and the stability of different platforms in the southern slope was calculated.The reinforcement and treatment scheme of landslide mass was given,mainly including the cleaning of loose and dangerous rock mass,the comprehensive anchoring and reinforcement of long anchor bolts,prestressed long anchor cables,steel rail piles,frame beams,the closure of shotcrete and anchor nets in broken areas,the deep drainage holes of the slope,the surrounding intercepting and drainage ditches,etc.The study provided a reference for the treatment of landslide geological disasters under the same geological conditions.