ISO 11275-2004 土质.不饱和液体渗导性和水保持特性的测定.风蒸发法

作者:标准资料网 时间:2024-05-16 07:18:00  浏览:9175   来源:标准资料网

【英文标准名称】:Soilquality-Determinationofunsaturatedhydraulicconductivityandwater-retentioncharacteristic-Wind'sevaporationmethod
【原文标准名称】:土质.不饱和液体渗导性和水保持特性的测定.风蒸发法
【标准号】:ISO11275-2004
【标准状态】:现行
【国别】:国际
【发布日期】:2004-07
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC190
【标准类型】:()
【标准水平】:()
【中文主题词】:数学计算;水传导性;保持指数;测量;试验;定义;土壤;土壤普查;土壤组分;解吸;含水量;均匀性;风;土壤采样;水分保持值;土壤湿度计
【英文主题词】:Compositionoftheground;Definitions;Desorption;Homogeneity;Mathematicalcalculations;Measurement;Retentionindex;Soilsampling;Soilsurveys;Soils;Tensiometers;Testing;Waterconductivity;Watercontent;Waterretentionvalue;Winds
【摘要】:ThisInternationalStandardspecifiesalaboratorymethodforthesimultaneousdeterminationinsoilsoftheunsaturatedhydraulicconductivityandofthesoilwater-retentioncharacteristic.Itisapplicableonlytomeasurementofthedryingordesorptioncurve.Applicationofthemethodisrestrictedtosoilsampleswhichare,asfaraspossible,homogeneous.Themethodisnotapplicabletosoilswhichshrinkintherangeofmatricheadhm=0cmtohm=-800cm.Therangeofthedeterminationoftheconductivitydependsonthesoiltype.Itliesbetweenmatricheadsofapproximatelyhm=-50cmandhm=-700cm.Therangeofthedeterminationofthewater-retentioncharacteristicliesbetweenmatricheadsofapproximatelyhm=0cmandhm=-800cm.NOTE1Aninfiltrometermethodcanbeusedtodeterminehydraulicconductivitiesnearsaturation.NOTE2ISO11274givesmethodstodeterminethewater-retentioncharacteristicformatricheadsbetween0cmand-15000cm.
【中国标准分类号】:Z18
【国际标准分类号】:13_080_40
【页数】:11P.;A4
【正文语种】:英语