胶带中部采样系统偏倚试验与精密度测定研究杨文承(国能榆林能源有限责任公司,陕西榆林719000)摘要:从试验煤种、相关参数、试验大纲、试验步骤等方面介绍了郭家湾煤矿胶带中部采样系统灰分偏倚试验;从基本情况、试验程序、制样、化验等方面分析了胶带中部采样系统干基灰分精密度测定方法,并依据GB/T19494.3—2004对采样系统偏倚试验和精密度测定进行了数据处理分析。结果表明,该胶带中部采样系统在相应的最大允许偏倚(B值为0.80%)下,灰分可接受为无实质性偏倚;对于期望精密度P预期=1.0%,灰分测定平均值的真实精密度优于期望精密度,总精密度符合要求。关键词:煤样;采样系统;偏倚试验;精密度测定;无实质性偏倚中图分类号:TQ533文献标识码:A文章编号:1005⁃8397(2023)04⁃0072⁃05BiastestandprecisionmeasurementofbeltmiddlesamplingsystemYANGWen-cheng(GuonengYulinEnergyCo.,Ltd.,Yulin,shanxi719000,China)Abstract:TheashbiastestschemeforthesamplingsysteminthemiddleofthebeltinsidethetrainloadingstationtowerofGuojiawanCoalMineofYulinEnergyCompanywasintroducedindetailfromtheaspectsoftestcoaltype,relevantparameters,testoutline,andteststeps;Fromtheaspectsofbasicinformation,testprocedures,samplepreparation,andlaboratorytesting,adetailedanalysisismadeoftheprecisionmeasurementschemeofthedrybasisashcontentofthesamplingsysteminthemiddleofthebelt,anddataprocessingandanalysisareconductedforthebiastestandprecisionmeasurementofthesa...