粒狀土顆粒破碎機(jī)理的試驗(yàn)研究.pdf

1、武漢理工大學(xué)碩士學(xué)位論文粒狀土顆粒破碎機(jī)理的試驗(yàn)研究姓名：袁倫申請學(xué)位級別：碩士專業(yè)：巖土工程指導(dǎo)教師：張季如20100501AbstractCurrentlytheresearchonparticlecrushingismainlyconcentratedinthestaticanddynamicmechanicalpropertiesofsoilsinthelowstresslevel，butlessinthehighstressl

2、evelsWiththedams，tunnelsandotherprojectsexpandingthescale，theresearchofsoilparticlesunderhighpressurecrushinghasgraduallybeenpaidattentionAccordingtotheconfinedcompressiontestsandthegrainsizeanalysistestsunderthelli曲pres

3、sure，twokindsofgranularmaterialsofsoilparticlescompressionmechanismisdiscussed，andthecombinationoffractaltheoryimageanalysisbymeansofadetailedanalysisofparticlebreakageTheresearchcontentandthemainresultsareasfollow：(1)To

4、introducetheconfinedcompressiontestandthegrainsizeanalysistest(sizeofparticleslargerthanO074mmwereanalyzedbysieving；lessthan0074mmparticleswereanalyzedbylaserparticlesizeanalyzer)(2)ToanalyzethecompressiondeformationTher

5、esultsshowthatthecompressionandcompressionmodelofgranularsoilsunderthehi曲pressurereboundcurveconsistentwithbilinear(3)Fivedifferentmethods(B15、B60、Bi0、Hardin’SandEinav’Srelativebreakages)areusedtomeasuretheparticlebreaka

6、ges，itindicatestherelationshipbetweentheparticlesizedistributionthepressurelevels，theparticleintensityandthebreakagesWiththeincreaseofloadlevel，fiagmentationmakestheparticlesizedistributiontowardsamorefavorabledirectionI

7、nthispaper，focusOnthebreakagesituationofthesmallparticlesizelessthanO074mmofthebrokensoilsamples，combinedwithHardin，SrelativebreakagesetthelimitbrokenparticlesizetoO361上mtoexplorethemechanismoffragmentationofsmallerparti