川省九龙县石头沟泥石流特征与防治工程措施研究-地质工程专业毕业论文

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1、ABSTRACTTheCharacteristicsandPreventionMeasuresofShitouGuIlyinJiulongCountrySichuanProVinceIntroductionoftheaumor：She皿a，female，waSbominOct．，1983whosetutor、张sProfessor‰gchuaIlaIldProfessorXuqiallg．Shegraduated矗omChengduU11ivers埘ofTecllll0109)rinGeologyengine出ng

2、r蛔or锄d、Vasg瑚tedtheMaSterDegreeinJune，2008．AbstractDebrisnowisageo-hazardWIlichoutbreal【sabruptlya11dcausesasevereconsequence．Along谢thdevelopmentofh啪ansocie劬thedebrisnowdisaStersbecomemoreseverebecauseofpeope’soverobtainmentofnan黼lresourceaIldconStantede始n】ctio

3、nofmeenviroment．Thus，inordertodiminjshtheoccurrenceprobabili够ofdisaStersa11dwea：kenthe10ssofit，theiIⅣestigationaIldaSsessmentshouldbeS仃en啦enandpreventionmeaIlsuresshouldbe住Il(en．T11e咖dyareaofmeS衄ougullyissi撇din恤southweStempanofJiulongcount职SichuallProVince．111

4、edisasterocc删．edon24mMayin2007aIldcausedailirectlyeconomiclossofthreemillionYuan．IIlthis戗lesis，weinVe螂et11ege0109icalaIldgeomo印hologicsettingsandfomationconditionsofthedebrisflowbyfieldinVestigation，studyon也epropertiesanddyllamiccharactersofthedebrisnow，thenpr

5、oposethepreVentionme2Lsures．Firstly，aIlalyzetheVariousf．actorsofShitouG“leybysnJdyingthedrainagebackgromldanditscharacteristics，diVidemedr面nageareaintofourzones：mewateringzone，thefomlingzone，tllenowingzoneaIldthed印ositionzoneaccordiIlgtoitsloosematerialorigina

6、lldterrain．Secondly，calcuIatethedensi吼veloci劬discha玛ealldimpulsiVeforceofthedebrisnow，meresultist11at：ShitougullyisaVeryt)，picalturbulent，site—Specificdebrisflowatalow矗哈quency．ThedenCityofmedebrisnowoccurringon24mMay，2007is1．659／cm3，its舶quencyisabout50yearsonc

7、e，itspeal【discha玛eis143．42m5／s，tllewh01eimpulsiveforceis93．05kP，thepeakindividualrockimpulsiveforceis48．79×1O牛N．AUnleparametersShowt11atthedes仃uctivepowerofthedebrisflowisVe巧large，t11epeopleandbuildingsonmealluVialf．觚areseriouSlythreatened．n’snecessa巧t0诅kepreV

8、entionmeansures．Basedonthefomationcorlditions，dyn锄iccharacteristics，debrisflowscaleatdi毹rent行equencyaIldthed锄agedobjects，ailIlingatthet)，peoftu】．bulentandlow丘．equencydebrisnowsucha