基于动态权重的区域冲击危险性评价方法研究

Study on Evaluation Method of Mine Regional Pressure Bumping Danger Based on Dynamic Weight

为了能客观准确地评价煤矿冲击地压的危险程度,减少主观性在评价中的影响,根据模糊综合评判理论,并基于指标权重动态变化的思想,提出了一种新的冲击危险性评价方法。将权重分解为固定不变的属性权重和动态变化的等级权重2部分,采用正态隶属函数计算指标隶属度,得到了指标不同级别之间的过渡边界,评价结果采用最大隶属度原则确定评价等级。该评价方法可以实现指标权重随指标值危险程度的增加而增大,避免因采用固定权重而使危险因素被中和的现象。最后将上述方法在试验工作面进行了评价,所得结果与实际相符。

In order to objectively and correctly evaluate the danger degree of the mine pressure bumping and to reduce the subjectivity affected to the evaluation,according to the fuzzy comprehensive judgment theory,based on the dynamic variation idea of the index weight,a new evaluation method of the mine pressure bumping danger was provided.The weight could be resolved to a fixed and invariant attribute weight and a dynamic variant grade weight.The normal subordinate function was applied to calculate the index subordinated degree and the transit boundary between the different grade indexes was obtained.The evaluation results with the max subordinated degree principle were applied to determine the evaluation grade.The evaluation method could realize the index weight increased with the danger degree of the index value increased and could avoid the neutralization phenomenon by the danger factors due to the application of the fixed weight.Finally,the above method was evaluated in the trial coal mining face and the results obtained were same to the actual results.