【摘要】 民采空区是影响露天矿边坡稳定性的重要因素。使用整体风险分析法,筛选边坡易损性评价因子,建立了民采空区影响下露天矿边坡的风险评估模型;利用层次分析法建立易损性因子的判断矩阵,并计算出各层因子的权重组合值;运用统计学方法对权重组合值的分布趋势进行统计分析,发现所有权重组合值近似服从标准正态分布。根据统计分析的结果,初步将民采空区影响下露天矿边坡的易损性划分为4个评价等级,并应用于某露天矿边坡易损性的风险评估当中。结果表明,边坡易损性评价等级为中,民采空区对该露天矿边坡的损害程度较小,对边坡整体稳定性影响不大,与边坡所处实际状态相符,表明该模型具有一定的实用性。更多还原

【Abstract】 The existence of civil mined-out areas is an important factor affecting the stability of open-pit mine slope.Based on holistic risk analysis approach,risk assessment model of open-pit mine slope is established by screening slope vulnerability assessment factors.Comparison matrix of vulnerability factors are built using the analytical hierarchy process,the weight combination of factors are calculated,and it is found that the combined values of all weights approximate a normal distribution by statistical methods.According to the results of statistical analysis,vulnerability of open-pit mine slope due to civil mined-out areas is divided into four levels.Application in the risk assessment of an open-pit slope vulnerability shows that the slope vulnerability is on the second level and civil mined-out areas have little effect on the stability of open-pit slope.The result is consistent with the actual state,indicating that this model has a certain practicality.更多还原