基于和谐度评价模型与STAB软件模拟的排土场稳定性分析

Analysis of the waste dump stability based on harmony degree evaluation model and STAB simulation

采用和谐度评价模型与STAB软件模拟相结合的方法,以某露天矿山三级排土场为例,借助和谐度评价模型建立排土场稳定性综合评价模型,并采用模糊层次分析法对重要性不同的各指标因素赋予不同权重,将排土场3个剖面代表区域作为评价目标,基于和谐度方程得出各剖面单指标、多指标和谐度矩阵,综合评价排土场各剖面的安全级别分别为:1—1剖面为正常级,2—2剖面和3—3剖面为较正常级。运用STAB软件计算各剖面的安全系数,验证了评价结果。二者结果一致,评价效果较好,可供同类型矿山参考借鉴。

In a case study of a three-level waste dump of an open-pit mine,harmony degree comprehensive evaluation model and STAB simulation are combined to establish a waste dump stability comprehensive evaluation model with the help of harmony degree comprehensive evaluation model,and the fuzzy analytic hierarchy process is used to assign different weights to different index factors of different importance,where the representative regions of three sections in the waste dump are taken as evaluation objectives,and single index,multiple index and harmony degree matrix of each section are obtained based on harmony degree equation.The safety level of each section in the waste dump is comprehensively evaluated as follows:Section 1-1 normal,Section 2-2 and 3-3 relatively normal.The safety factors are verified by the calculation of STAB.The results are consistent,indicating good evaluation effect,and can be used as reference by similar mines.