Page 171 - 《水资源与水工程学报》2022年第6期
P. 171
! 33 " ! 6 # & ' ( ) & * + , - Vol.33No.6
2022 $ 12 % JournalofWaterResources&WaterEngineering Dec.,2022
DOI:10.11705/j.issn.1672-643X.2022.06.21
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KLDMN:TU411;TV641.2 5 OPQRS:A OTUN:1672643X(2022)06016707
Selfhealingcapabilityofdispersivesoilbasedoncrackscouringtest
1
1
1
2
1
ZHANGXiaofei,CHENXinwei,YANTao,ZHANGWenwei,LIShouyi
(1.SchoolofWaterResourcesandHydroelectricEngineering,Xi’anUniversityofTechnology,Xi’an710048,China;
2.YellowRiverEngineeringConsultingCo.,Ltd.,Zhengzhou450003,China)
Abstract:Inordertostudytheselfhealingcharacteristicsofcracksindispersivesoil,aseriesofdisper
sibilityidentificationtests,soilbasicpropertytestsandindoorcrackscouringtestswereconductedonnat
uraldispersivesoilsamplesfromamineinXi ’anCityandsoilsamplesfromthereservoirareaofadam
project ,withquicklimeandsodiumcarbonateasthedispersants.Accordingtothetests,theeffectsof
soildispersibility ,soilbasicpropertiesandinvertedfiltermaterialgradationontheselfhealingcharacter
isticsofcracksindispersivesoilwereinvestigated.Thetestresultsshowthatunderthesameinvertedfil
termaterial,thehigherthedispersibilityofthesoilmass,thesmallerthesoilparticlesfallenfromthe
cracksurfaceafterwettinganddisintegration ,theslowerthecrackhealingandthebetterthefinalself
healingeffect.Theselfhealingcharacteristicsofcracksareinfluencedbythechangesofvariousindica
torssuchasthebasicpropertiesofsoil ,amongwhichtheinfluenceofpHisthemostsignificant.Under
thesametestsoilsample,astheparticlesizeoftheinvertedfilterdecreases,theauxiliaryimpermeability
effectoftheinvertedlayerandthecrackhealingqualityimproves.
Keywords:dispersivesoil;crackselfhealingcapability;crackscouringtest;corewallimpermeable
soil ;invertedfiltermaterial
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