雅鲁藏布江中游干支流水文特性及冰川湖溃决洪水研究

《雅鲁藏布江中游干支流水文特性及冰川湖溃决洪水研究》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、大连理工大学工程硕士学位论文摘要青藏高原水文气象条件十分复杂，由于自然条件差、人类活动少、开发程度较低，对水文气象特点的认识尚不深入，本文通过现场调查和分析研究，对雅鲁藏布江中游重要支流的水文气象特性有了更深入的认识；对冰川终碛湖溃决可能性的判别和溃决洪水计算途径提出分析结论。本文第一章介绍了课题的研究背景，提出了研究目标、内容和方法：第二章重点分析了年楚河、拉萨河、尼洋河和雅鲁藏布江干流中游段的气候特征，径流组成特性，同期降水、径流占年总量比例的不对应特性和原因，径流年内年际变化规律及径流深分布特性，分析了天然洪水的特

2、点和洪水参数：第三章介绍了冰川终碛湖的特点，结合已经发生溃决的冰川终碛湖的有关调查资料和考察资料，分析提出了危险冰湖判别指标和发生溃决的气候条件、周期性特征，提出了冰湖溃决洪水的计算途径。关键词：雅鲁藏布江中游支流水文特性冰川终碛湖溃决洪水分析研究大连理工大学工程硕士学位论文AbstractThehydrologicalsituationofQinghai—Tibetllighlandisverycomplicated．Becausethenatuelconditionofstudyissevere．humanaetiv

3、ityjsfewthere，andtheregionislow-leveldeveloped．themetrohydrologicalstudyofQinghai-Tibethighlandisfew．nmpurposeofthispaperistogetsomedeeperstudyresultandnewknowledgeinmetrohydrologicalcharacterofmainstreamandimportanttributariesofthemiddiereachoftheYalu-znagbuRive

4、LthrotIgbsomefieldinvestigationandstudy．Alsotogetsomenewconclusionofglaciallakesburstfloods，inpossibilitystudyofglaciaIlakeburst．andinqualitifiedstudyofthesafetyoftheglaciallakes．Thefirstcharacterof出jspaperjntroducethebackgroundofthispaper,setthegoal，contentandme

5、thodlogyofthestudyworkinthispaper．Thesecondchapterofthispaperfocusesonthemeterologicalcharacter,runoffcompositioncharacter,whynotcorrespondencyofratioofrainfatlandrunoffinsalneperiodtoannaalvalueforNianchuRiver,LashaRiver,NiyangRivetandthemiddlereachofYalu—zangbu

6、River．Theregimeinrunoffvaryingbetweenyears，andtheregimeofdistributionofl'llnoffdepthofsometributariesoftheseriversarestudiedtoo．Theregimeofthefloodsandfloodparametersoftheseriversarcalsostudiedinthispaper．Thethirdchapterofthispaperfocusesonthecharacterofglacialla

7、keofthehighland．Bystudyingtheinvestigationandobservationdataofburstedglaciallakes，analyzeandseekaqualifyingwayofdescriptionofthedegreeofdangerousoftheglaciallakes，analysingthemeterologicalconditionthatmadeglaciallaketobemoredangerousTheperiodiccharacterisstudiedt

8、oo．nmfurthermainresultisdevolopeingawaytocalculatetheglacialburstlake．Keywords：mainstreamandtributariiesofmiddlereachofYalu-zangbuRiverhydrologicalcharacter,gl