基于最优组合权重的GRA-TOPSIS深井巷道支护方案优选

为确定矿山最佳深井巷道支护方案,基于最优组合权重构建深井巷道支护GRATOPSIS综合评价模型,以某深井矿山为例,选取14项评价指标作为GRA-TOPSIS综合评价模型的判别指标,运用层次分析法(AHP)和熵权法确定组合权重,引入最小鉴别信息原理优化组合赋权,利用GRA-TOPSIS综合评价方法定量分析备选支护方案,基于评价指标的综合优越度确定最优巷道支护方案。结果表明,5种备选支护方案的综合优越度分别为:50.4%,49.0%,56.6%,42.7%,55.8%。顶板与两帮均锚杆锚索、喷射混凝土,底板锚索并注浆联合支护方式为最优决策。该评价模型能够对支护方案定量评价,模型鲁棒性强。

Scheme optimization of supporting in deep underground roadway based on GRA-TOPSIS with optimal combination weight

In order to determine the best support scheme for deep well roadway in the mine,the GRA-TOPSIS comprehensive evaluation model of deep roadway support was constructed based on the optimal combination weight. With a deep mine as an example, 14 evaluation indicators were selected as the discriminative indicators of the GRA-TOPSIS comprehensive evaluation model.The analytic hierarchy process (AHP) and entropy weight method were used to determine the combined weights, and the principle of minimum discriminant information was introduced to optimize the combination weighting. The GRA-TOPSIS comprehensive evaluation method was used to quantitatively analyze the comprehensive superiority of the alternative support scheme based on the evaluation index to determine the optimal roadway support scheme. The results showed that the comprehensive superiority of the five alternative support schemes were:50.4%, 49.0%, 56.6%, 42.7%, 55.8% respectively, and the combined support with anchor bolt anchor rope used on the roof and both sides, shotcrete, floor anchor rope and grouting was the optimal scheme. In conclusion, the evaluation model proposed can quantitatively evaluate the support scheme with its robustness.