钾离子在粘性土中扩散运移的影响因素

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1、JoumalofSoutheastUniversity(EnglishEdition)V01．22，No．1，pp．106—11lMar．2006ISSN1003—_7985SomefIactorscontrollingdifl'usiVetransportofpotassiumionthroughclayeysoilsDuYanjunlLiuSongyulHayashiShigenori2(1Ins胁ceofGeotechnicalEnginee咖g，SoumcastUniversity，N觚jing210096，China)(2InstituteofLowlaIldTechnolo

2、gy，SagaUniverSity，Saga840—8502，J印aJl)Absn翟ct：TbinVestjgatethepotentialuSeoftwoJapanesere垂onalclayeysoils，nanledA—akeclaya11dAkabokusoil，assoilb枷ermat嘶als，aseriesof1ab咖to巧diffusiontestsarepresented．Usinganavaila_blecomDuterpmg姗P01luteV6．3，theef!f＆tivediffusioncoefflcientsofK+ofthesOilswereback—ca

3、lculatedm)mthedif!f．usiontests．Itisfoundtllatthe崩al(eclayhasala增巳re侬圮tivediffusioncoe衔cientmaIltheAkabokusoil，indicatingmattlleAriakeclaymayprovideabetterdiffusionb枷er．Acomp撕sonoftheef‰tiVediffusioncoefficiemsbetweentllesin91e．saltsolutionconditionandthemulti—saltsolutiOnconditionindicatesmatsoi

4、lshavehighere侬圮tivediffusioncoemcientsunderthefbnI]Iercondition．ItissuggestedtouseIIlisciblesolutionclosetolaIldfill1eachatesfordetemlininge氐ctivedi觚sioncoef!ficientsofspecifiedcherIlicalspeciesforapmcticaldesign．KeywOrds：adso印tion；Ariakeclay；bamer；batch—typetest；cont锄inaIlt；diffusion；1aIldfiUnh

5、asbeenr印onedmatinJapanupto2000，theremainingaVailablecapacityofwastedisposallandfillsitesisonlV3．7Vears，whichindicatesmatitisneces—sarvtobuildmorelaJldfills¨J．Duetot11eliIIlitedaVail—ablelandinJapaIl，t11ereisatendencytobuildlaIliIfiUsinmecoastalareal引，aJldmelocalm撕neclaysofin—terestmaVpmvidesourc

6、esforpotemialb枷erImlteri—als．Abamerisusuallyusedto1iITlitmetraIlsportofcont删nantsmigratingf-rommelandfill，aIldmiIlimizemeimpactofcontaIIlinaIltsontllesurroundingenvimn·rnent．However，presenⅡyinJapan，byfar，littlehasbeendonetoassessmepotentialutilizationofJapaIleseregionalmarineclaysasbamermaterial

7、s．Inpanicular，ratherlittlehasbeenpublishedonmestudyofdiffusivetransportofcontarllinantsinclays．Thisresultsinmuchuncertaintyintllepotentialapplicationof10calmarineclavsasbarriermaterialsinlaIldfills．Therefore。itisnecessarytoi