煤层冲击倾向性变权重可变集分类识别

发布时间：2018-03-02 05:20

本文关键词： 冲击地压冲击倾向性可变集识别模型变权模型博弈论类别特征值　出处：《西安科技大学学报》2017年03期 　论文类型：期刊论文

【摘要】：针对煤层冲击倾向性评价的模糊不确定性问题,为准确合理地评判冲击倾向性强弱,提出变权重可变集分类识别模型。模型选取动态破坏时间、弹性能量指数、冲击能量指数和单轴抗压强度作为分类指标,采用CRITIC法计算指标客观常权,利用指标数据与指标分类标准值区间的关系求解指标客观变权,最后运用博弈论对主客观权重进行优化集成,得到评价对象的变权权向量。引入可变集理论合理确定评价指标对各类别指标标准值区间的相对差异度,建立冲击倾向性可变集评价模型,依据类别特征值判断评价对象的隶属类别。实例表明,该方法较好地考虑了模型参数与样本指标权重的可变性,能科学合理地评价煤层冲击倾向性,识别结果更为可信,为煤岩冲击倾向鉴定与冲击地压危险性预测提供了新的方法和思路。
[Abstract]:In view of the fuzzy uncertainty in the evaluation of coal seam impact tendency, in order to accurately and reasonably judge the impact tendency, a variable set classification and recognition model with variable weight is proposed. The dynamic failure time and elastic energy index are selected for the model. The impact energy index and uniaxial compressive strength are used as classification indexes. CRITIC method is used to calculate the objective constant weights of the indexes, and the relationship between the index data and the standard value interval of the index classification is used to solve the objective variable weights of the indexes. Finally, using game theory to optimize and integrate subjective and objective weights, the variable weight vector of the evaluation object is obtained, and the relative difference degree of the evaluation index to the standard value interval of each kind of index is reasonably determined by introducing the variable set theory. The variable set evaluation model of impact tendency is established, and the membership category of the evaluation object is judged according to the class eigenvalue. The example shows that the variability of the model parameters and the weight of the sample index is well considered by this method. It can scientifically and reasonably evaluate the tendency of coal seam impact, and the identification result is more reliable, which provides a new method and thought for the identification of coal rock impact tendency and the prediction of rock burst risk.
【作者单位】：淮南职业技术学院技工部;安徽淮南矿业技师学院;
【基金】：淮南职业技术学院科技基金(HKJ15-1) 安徽省教育厅高等学校省级质量工程项目(2015msgzs168)
【分类号】：TD324

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