底板突水危险性评价FCE优化模型及工程应用

Optimized FCE model for evaluating floor water burst hazard and its application

为解决我国矿井普遍存在的煤层底板突水评价难题,分析地质构造、承压含水层、底板隔水层3个总指标中的8类影响因素,确定因素的等级临界值。采用层次分析法(AHP)确定各影响因素的权重及总指标权重,将因素权重引入经加权欧氏距离公式改进的模糊综合评价法(FCE)中,建立底板突水危险性评价FCE优化模型。将模型运用到山西临汾某矿,模型评价结果经Surfer软件处理,绘制成煤层底板突水评价分区图,并以一次突水实例验证模型。结果表明,用该模型评价的突水危险区域与实际突水区域相吻合。

In order to solve the problem of coal seam floor water inrush assessment, a widely spread phenomenon in this country, influences of eight factors related to geological structure, confined aquifer and water-resisting floor on the water inrush were analyzed. Critical values of the factors were determined. AHP was used to calculate weights of the factors.The weights were introduced into FCE improved by Euclid distance, and then an optimized FCE model was built for evaluating hazard of floor water burst. The model was applied to a certain coal mine in Linfen, Shanxi province,China.It was demonstrated that the prediction of areas with high floor water burst hazards by the model conforms to the reality.