35380.泥石流沖擊信號識別方法研究

1、分類號!!絲：望密級單位代碼10618學(xué)號106280622墨麼交迫戈肇碩士學(xué)位論文論文題目：泥石流沖擊信號識別方法研究研究生姓名：亟玉蓮導(dǎo)師姓名、職稱：墮湛塾麴援盟墨專業(yè)名稱：港口、海岸及近海工程論文答辯日期學(xué)位授予單位答辯委員會主席：劉光華教授級高工評閱人：劉光華教授級高工2009年4月陳野鷹教授ABSTRACTFrequelmyoccurringinmountainvalleyorslopingfield，debrisflowis

2、onel(indotsolid1iquidtwophaseflowwhichcontainingamassofsandblockandbowlderIthasmanvcharacteristicssuchasbreakingoutabruptlytimebrevityvigorferocityandt減cal鋤ityereNowitbasbecomeolleofthemostactivesurfacedynamicphysiognomy

3、processesImpactforceofdebdsflowisasortofdynamicloadingwhendebrisflowgoesforwardtoimpactallthetingstouchedItistheloadgisttoactualizecontrollmgproiectsofdebrisflowBasedontheresearchofkinematicsanddynamicsofdebnsnow，thepape

4、rhasstudiedimpactforceofdebrisflowwithmanifoldnumericalcalculatioasThemaincontentsandconclusionsinclude：First，thep印erhasestablishedaexperimentationmodelofdebrisflowandexperirnentalizedaccordingto0308cm、0。815cm、15～30cmthr

5、eesolldph嬲edi鋤eterS002、008、016、020、025fivesolidphaseratiosAtthesametimeitattainedmoremaIl85000datausingbridgesensor’dynamicstraingaugeandllighspeedvidiconetcandestablishedmorethan40dynamicimpactsignalsatdlt：terentstatesD

6、ependingontheresultofexperimentation，thevelocityisdecreasing，buttheimpaCtofdebrisflowtakeonincrescentcurrentalongwiththeaugmentationotsolldphaseratiosSecondbasedonwaterforcarriertheimpactforcecurvesofdebrisflowhavebeenre

7、gardedaSonekindofpressurefluctuationsignalstobeanalyzedBytheresearchoneverykindimpactsignalofdebrisflowthepaperhasestimatedandanalyzedtheaverage，standarddeviation，maximum，normaldistributioncuⅣesaIldthevelocityofdebrisflo

8、wSo，thecharacteristicparametersrelativingtothelmpactslgnalsofdebrisflowhavebeenpicked—upThirdbasedthecharacteristicsofimpactsignalsofdebrisflowthepaperhasuseddi虢rentⅥraveletanalysismethodstodenoisethesignalsinordertofind

9、ingmoreobvious臼endoftheimpactsignalsTakingtheB一3impactsignalforobject，thepaperhaVemal(euseofthetime丘equencylocalizationfunctionsofwaveletanalysetodistlllthesigllalfrequencyofenergydistributingThenit’sknownthatthemaln。ene

10、唱ysegmentisamong0～10HzFourth，groundedontheanalysistoimpactsignalsofdebrisflowthepaperfoundthecongmousfluctuatingpressureexpressionbyconstantlycomputinganddatatlttlngThecorrelationcoefficientsofA，B，Csetsare8281％，86。12％，96