摘要
边坡稳定性问题随露天矿开采的进行不断突出,而边坡软弱岩层严重影响边坡稳定性。大量工程实例显示,露天矿含软弱岩层组的高陡复杂边坡失稳模式通常为“坐落-滑移式”破坏。为明晰露天矿高陡复杂边坡软弱岩层组“坐落-滑移式”破坏模式的破坏机理,以某露天矿为例,提出一种针对露天矿含软弱岩层组高陡复杂边坡的综合分析方法。研究结果表明:采用工程地质分析、传统极限平衡方法和数值模拟分析相结合的综合分析方法,针对该类型复杂边坡可发挥不同分析方法的优势,较全面地从地质自然环境条件、定性定量方面、应力应变角度分析边坡破坏机理及模式,总结归纳出含软弱层组露天矿高陡复杂边坡“坐落-滑移式”破坏的“坐落-滑移-剪出”三段式破坏特征,为其他类似复杂边坡稳定性的分析和防治提供思路和手段。
Slope stability problems continue to be highlighted with open pit mining,while the weak rock strata of the slope seriously affect the stability of the slope.A large number of engineering examples show that the instability mode of high and steep complex slope in open pit containing weak rock formations is usually"site-slip"failure.In order to clarify the failure mechanism of the"site-slip"failure mode of the weak rock group with high and complex slope in open pit mine,a comprehensive analysis method for the high and complex rock group with weak rock group in open pit mine is proposed.The results show that:The comprehensive analysis method,which combines engineering geological analysis,traditional limit equilibrium method and numerical simulation analysis,can give full play to the advantages of different analysis methods for this type of complex slope,and comprehensively analyze the slope failure mechanism and model from the geological,natural and man-made environmental conditions,qualitative and quantitative aspects,and stress and strain perspectives.The three-stage failure characteristics of"sitting-slip"failure of high and steep slope in open-pit mine with weak layer formation are summarized,which provides ideas and means for the stability analysis and prevention of other similar complex slope.
作者
聂兴信
吴功勇
张鑫
赵一迪
王哲
NIE Xingxin;WU Gongyong;ZHANG Xin;ZHAO Yidi;WANG Zhe(Xi'an University of Architecture and Technology,Xi'an Shaanxi 710054,China)
出处
《工业安全与环保》
2024年第5期40-44,共5页
Industrial Safety and Environmental Protection
关键词
露天矿高陡边坡
软弱岩层组
“坐落-滑移式”破坏
数值模拟
high and steep slope of open-pit mine
weak rock formation
"sitting-sliding"failure
numerical simulation
