基于漂移度-未确知测度模型的煤层注水效果评价
Evaluation of the effect of water infusion of coal seams based on drifting degree and uncertainty measurement model
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摘要: 煤层注水效果直接影响到矿井的防灾减灾和高效生产。 为了准确评价煤层注水效果,将 未确知测度理论与漂移度组合赋权原理相结合,建立漂移度-未确知测度评价模型。 运用未确知 测度理论构建各指标未确知测度函数,以获得单指标测度评价矩阵;利用漂移度确定组合赋权中 权重系数的分配,得到更为精准的指标组合权重;依照置信度识别准则,通过多指标综合测度评 价向量进行等级判定,并利用样本等级期望和等级测度细化评价结果。 以采煤工作面煤层注水 工程为例,对其注水效果进行评价并与已有评价方法对比,该模型评价结果更加符合实际情况, 有效克服了指标等级区间划分、权重系数分配等不确定信息对煤层注水效果评价的影响,为煤层 注水效果评价提供了一种新的思路和方法。Abstract: Theeffectofwaterinfusionofcoalseamshasadirectinfluenceonthedisasterprevention andmitigationandefficientproductioninmines*Uncertaintymeasurementtheoryintegratedwithcom⁃ binedweightingofdriftingdegreeisappliedtoestablishthedriftingdegree⁃uncertaintymeasurement modelinordertoevaluatetheeffectofwaterinfusionofcoalseamsaccurately*Theuncertaintymeas⁃ urementfunctionofeachindexisestablishedbyusingtheuncertaintymeasurementtheorywhichcan getthematrixofsingleindexmeasurementevaluation*Thentheweightcoefficientsareallocatedbyu⁃ singthedriftingdegreetoobtainamoreaccuratecombinedweight*Finally,onthebasisofcrediblerec⁃ ognitioncriterion,thegradingsoftheeffectoftheprojectswerejudgedwiththeevaluationvectorof multi⁃indexescomprehensivemeasurementevaluation,andtheevaluationresultswererefinedbytheex⁃ pectedvalueandmeasurementofthesample’sgrade*Takingtheengineeringprojectofwaterinfusionofthecoalseamoftheworkingfaceasanexample,theeffectiscomparedwithotherevaluationmethods andtheresultsshowthatthemethodinthispaperismoreconsistentwithpracticalsituation*Thismodel surmountstheinfluenceofsomeuncertaintyinformationsuchastheindexgrade’sintervaldividingand the allocation of weight coefficient on the evaluation*This method provides a new reference for evaluatingtheeffectofwaterinfusionofcoalseams*