山區(qū)河流采砂對(duì)河床演變影響研究

1、Y856580分類號(hào)』￡!盟密級(jí)單位代碼10618學(xué)號(hào)03280107重慶交通大學(xué)碩士學(xué)位論文論文題目；山區(qū)河流采砂對(duì)河床演變影響研究研究生姓名：張艾文導(dǎo)師姓名、職稱：程驀華教授楊勝發(fā)副教授申請(qǐng)學(xué)位級(jí)別，工學(xué)碩士專業(yè)名稱：港口、海岸及近海工程論文答辯日期：2006年4月30翻學(xué)位授予單位；重慶交通大學(xué)答辯委員會(huì)主席：周華君教授評(píng)閱人：劉朝離離工2006年4月30Ej文傳乎高工摘要2ABSTRACTThroughfielddataanal

2、ysis，theoreticaldiscussing，flumeexperimentresearch，2Dmathematicalmodelcalculationandgeneralizedphysicalmodeltesting，alongwiththefoundationexperimentstudyofthesedimentinitiationandtheexploitationmodeofbeachgravel，thiswork

3、investigatedtheinfluenceofthebeachgravelexploitationtotheriverevolutionandthedeterminationoftheexcavationamountoftheboulderandgravelThemainconclusionsareasfollows：l、Sedimentincipientmotionisthecriticalstatefromquiescence

4、tomotionincertainflowconditionsTaylornondimensionalsedimentdischargerate(K)wasadoptedintheflumeexperimentTakingtheformofShamofuformulatherateofthetwocoefficientswas1068whentheparameterKadopted002(sedimantincipientmotionc

5、riterion)and0ofthecriticalstatefromquiescencetomotion)WhileCuntanformula’Sf0ITnwasadoptedtheratewas1066SoTaylornondimensionalsedimentdischargerateCallapproximatelyreflectthesedimentcriticalstatefromquiescencetomotion2、By

6、analyzingtheincipientmotiondataofboulderandgravelinflumeexperimentandthesedimentinitiationandtransportofChengganqiinJialingjiangthethesisarguedthatShamofuformulacouldbetakenasthesedimentinifiationcriterioninmountainousri

7、vers3、BasedOntheexperimentofthesedimentexploitationmodeofChengganqiinJialingjiangandthepitridgegeneralizedphysicalexperimentofDeganba，andthroughcomparisonofthefavorableandadverseimpactof耐typeanduniversalexcavationmode，th

8、eauthorrecommendedthatthegridtypeexcavationmodecallbeusedifthetransversesandridgeisstable，otherwisetheuniversalexcavationmodeWitsmoresuitableinmountainousrivers4、TakenthesedimentexploitationofChengganqiinJialingiiangasth

9、etypicalcasewhetherthesedimenttransportzoneisexpediteornotaftertheuniversalexcavationiSdemonstratedwhentheShamofusexlimentinitialionformulawasadoptedTheinfluenceofboulderandgravelexploitationinmountainousriversupontheriv

10、erevolutionandhowtodeterminetherationalquantityofexcavationwerestudied5、TakenthesedimentexploitationofDeganbaasthetypicalexample，theretrogressiveerosion，rivertransfclrmationandtheinfluenceoftransversesandridgetotheriverc