12142.賀蘭口巖畫風(fēng)化機(jī)理研究及其保護(hù)材料探索

1、獨(dú)創(chuàng)性聲明本人聲明所呈交的論文是我個人在導(dǎo)師指導(dǎo)下進(jìn)行的研究工作及取得的研究成果。盡我所知，除了文中特NDri以標(biāo)注和致謝的地方外，論文中不包含其他人已經(jīng)發(fā)表或撰寫過的研究成果，也不包含為獲得寧夏大學(xué)或其它教育機(jī)構(gòu)的學(xué)位或證書而使用過的材料。與我一同工作的同志對本研究所做的任何貢獻(xiàn)均已在論文中作了明確的說明并表示了謝意。研究生簽名：弘酵乙噻時問：房群年鄉(xiāng)月砂日關(guān)于論文使用授權(quán)的說明本人完全了解寧夏大學(xué)有關(guān)保留、使用學(xué)位論文的規(guī)定，即：學(xué)

2、校有權(quán)保留送交論文的復(fù)印件和磁盤，允許論文被查閱和借閱，可以采用影印、縮印或掃描等復(fù)制手段保存、匯編學(xué)位論文。伺意寧夏大學(xué)可以用不同方式在不同媒體上發(fā)表、傳播學(xué)位論文的全部或部分內(nèi)容。(保密的學(xué)位論文在解密后應(yīng)遵守此協(xié)議研究生簽名：弘眈京靳虢棚釤∥。，f【J時間：如彬年歹月砂日時間：士，中年占月y日111erockartslocatedinHelanmountainsbelongtoimmobilestonerelicsoutdoorw

3、hichhavebeenseriousweatheringwiththekeypatternsofcrackpropagationandexfoliationbecauseoflong—termeffectsofenvironmentalconditionsInthispresentpaper，rockartsinHelankouweretakenastheresearchobjectAtfirst，onthebasisoftheinv

4、estigationoncurrentstatus，theRMT150Crockmechanicstestsystemwasusedtostudymechanicss訂engthofsplittingtest，uniaxialcompressionexperiment，triaxialcompressionexperimentanddirectsheartestoftherockneartherockpaintingsinHelanko

5、uThen，thedataofhumidi哆，windandtemperaturehavebeenanalyzedstatisticallyInaddition，theweatheringmechanismwasstudiedthroughusingXRD，SEMandEDSanalysesmethodsandcombiningwithfreezethawtestandwindtunneltestinlaboratoryforrocka

6、rtsAtlast，theSi02protectivefilmwaspreparedonrocksurfacebyusingbio—mimeticsynthesistechnologyTheresultsshowthattherockinHelankouispoorinductilitys廿onginbrittleness，SOitiseasytobreakuponexternalforceSoalargertemperaturedif

7、ference，moderatehumidityandfrequentsandstormsalltheyearroundinHelankoumaderockpaintingsweatheringAndthemicrostructureisporouswithlittlecementingmaterialandfissuredevelopmentismultidirectionalThechangingoftemperaturecause

8、srockcrackthatmaketherockmechanicalstrengthdecreaseobviouslySandstormerosionmakesrockqualityreducedobviously，andthewinderosionmoduluspresentincreasingfiendwiththeincreaseofsandflowspeedAtthesametime，theblackattachmentson

9、thesurfacewheretherehasmicrobialgrowthpresentclumpsandblockcolloidsAnd，thehydrationcausedrockvolumeincreasedsharplyAtlast，themembraneswerecharacterizedandtestedwhichwerepreparationofethylsilicateandsodiumfluosilicateassi

10、liconrespectivelyThepictureofSEMfortwoplansshowedthattherecoveredwithalayerofcompactsphericalparticlesonthesamplesurface，butthefilmmicrostructureWasmorehomogeneousanddensethatpreparedbysiliconSOurCeofethylsilicateThetest

11、sresultsshowthatpollutionresistancehasincreased，ontheotherhand，waterabsorptionandhydrophilicityhavereducedThesestudieswouldprovidedacomprehensive，scientificunderstandingoftheweatheringmechanismofrockpaintingsandatheoreti