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组合赋权的TOPSIS在冲击地压危险性评价中的应用

Application of composite weighting TOPSIS in rockburst risk assessment

  • 摘要: 为了合理准确地评价煤矿冲击地压危险性,在现有评价冲击地压危险性实例的基础上,从煤矿地质因素和开采因素2个方面,选取10个主要的影响指标,利用熵权法和指标相关性权重法分别计算影响冲击地压危险性的各评价指标权重,再根据组合赋权的方法得出各指标的综合权重,构建基于逼近理想解理论的冲击地压危险性评价模型。以重庆砚石台煤矿为例,选取20组评价冲击地压危险性样本数据进行分析,确定评价冲击地压危险性的最优和最劣状况,然后计算出各个评价方案与最优和最劣状况的距离,最后综合最优与最劣距离,确定评价对象的相对贴近度。应用结果表明:评价结果与实际情况一致,且该模型相较其他模型的评价结果更加科学准确,表明该方法有良好的实用价值。

     

    Abstract: In order to reasonably and accurately evaluate the risk of rockburst in coal mines, on the basis of existing examples of rockburst risk evaluation, from two aspects of coal mine geological factors and mining factors, 10 main influencing indicators were selected, the entropy weight method and the index correlation method were used to calculate the weight of each evaluation index affecting the risk of rockburst respectively, and then the comprehensive weight of each index was obtained according to the method of composite weighting, the risk evaluation model of rockburst based on the theory of approximate ideal solution theory was constructed. Taking Chongqing Yanshitai Coal Mine as an example, 20 groups of sample data for evaluating the risk of rockburst were selected for analysis. Firstly, the optimal and worst conditions for evaluating the risk of rockburst were determined, and then the distance between the optimal and worst conditions in each evaluation scheme were calculated, finally, the optimal and worst distances were synthesized to determine the relative closeness degree of the evaluation object. The application results show that the evaluation results are consistent with the actual situation, and the evaluation results of this model are more scientific and accurate than those of other models, indicating that this method has good practical value.

     

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