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西藏邦铺露天矿最终开挖境界台阶边坡具有高边坡、高海拔、高地应力、高渗流、高寒等特征,边坡岩体结构复杂。通过野外现场调查,对边坡岩体结构面数据进行统计分析,再结合露天矿基建开挖初设边坡的地形地貌、地质构造以及结构面特征因素、矿体赋存条件、矿床围岩稳定性、地质灾害发育现状等,采用Dips软件分析,再把Dips文件图形导入CAD进行图元编辑得出矿区北部、西南部台阶边坡破坏类型分析图。结果表明,西藏邦铺露天矿台阶边坡破坏类型主要有三种模式:倾倒破坏,平面滑动破坏,楔形体滑动破坏。其中,平面滑动破坏概率比较小,倾倒破坏和楔形体滑动破坏发生概率比较大,应采取针对性的工程治理措施并分段治理。
The slope conditions of high slope, high altitude, high ground stress, high seepage and alpine are the features of slope in the state of final excavation in Bangpu Open-pit Mine in Tibet. The structure of slope rock mass is complex. Through the field investigation, the statistical analysis of the data of structural facets of slope rock mass is carried out. Combined with the characteristics of topography, geology structure and structural plane, the conditions of ore body and the stability of the surrounding rock in the open pit mine Sex, the development of geological disasters, etc., the use of Dips software analysis, and then import the Dips file graphics into the CAD editing of the northern part of the mining area to obtain the slope of Southwest slope type analysis. The results show that there are mainly three types of failure modes of slope in Tibet State Mine open pit: dumping failure, plane sliding failure and wedge sliding failure. Among them, the probability of plane sliding failure is relatively small, and the probability of dumping failure and wedge sliding failure is comparatively large. Therefore, targeted engineering measures should be taken and governed by stages.