The instability and failure mechanism of high and steep slopes in surface mines, and the basis for some reasonable landslide prevention measures were provided using the RFPA-SRM. Based on the actual progress of the Pi...The instability and failure mechanism of high and steep slopes in surface mines, and the basis for some reasonable landslide prevention measures were provided using the RFPA-SRM. Based on the actual progress of the Pingzhuang Western Surface Mine and based on strength reduction method, the dynamic instability processes of the top high and steep slope was simulated. Also, the landslide mode was determined, the characteristics of the displacement distribution, the deformation, failure, and the stress distribution in the slope were demonstrated, and the stability was calculated. Conclusions can be drawn as follows： the landslide or failure of high and steep slopes on a surface mine is a gradual process, in which the slope undergoes the generation, expansion, and connection of the fractures and the displacement increases until landslide occurs; a small portion of the upper rocks fail due to the tension and the lower rocks fail due to the shear; the potential sliding surface is combined and the essential cause of the landslide is the shear stress concentration.展开更多
本文运用真实破裂过程分析模拟软件RFPA(Realistic Failure Process Analysis),基于其强度折减法,应用RFPA-SRM模拟边坡岩体的变形破坏过程,对贵州某煤矿采区地表山体边坡最终边坡角约50°时进行数值模拟分析,并求其稳定性系数。通...本文运用真实破裂过程分析模拟软件RFPA(Realistic Failure Process Analysis),基于其强度折减法,应用RFPA-SRM模拟边坡岩体的变形破坏过程,对贵州某煤矿采区地表山体边坡最终边坡角约50°时进行数值模拟分析,并求其稳定性系数。通过分析数值模拟结果,研究了边坡岩体的变性特征及滑坡模式。展开更多
基金Supported by the National Natural Science Foundation of China （50375026） the Project of Liaoning Province Department of Education （20060387） Liaoning Province, Guideline Plan Project on Safety in Production and Development of Technology （[2009] No. 88）
文摘The instability and failure mechanism of high and steep slopes in surface mines, and the basis for some reasonable landslide prevention measures were provided using the RFPA-SRM. Based on the actual progress of the Pingzhuang Western Surface Mine and based on strength reduction method, the dynamic instability processes of the top high and steep slope was simulated. Also, the landslide mode was determined, the characteristics of the displacement distribution, the deformation, failure, and the stress distribution in the slope were demonstrated, and the stability was calculated. Conclusions can be drawn as follows： the landslide or failure of high and steep slopes on a surface mine is a gradual process, in which the slope undergoes the generation, expansion, and connection of the fractures and the displacement increases until landslide occurs; a small portion of the upper rocks fail due to the tension and the lower rocks fail due to the shear; the potential sliding surface is combined and the essential cause of the landslide is the shear stress concentration.
文摘本文运用真实破裂过程分析模拟软件RFPA(Realistic Failure Process Analysis),基于其强度折减法,应用RFPA-SRM模拟边坡岩体的变形破坏过程,对贵州某煤矿采区地表山体边坡最终边坡角约50°时进行数值模拟分析,并求其稳定性系数。通过分析数值模拟结果,研究了边坡岩体的变性特征及滑坡模式。
