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1、摘要關(guān)鍵詞:畢業(yè)設(shè)計,斜心墻土石壩,穩(wěn)定計算該江位于我國西南地區(qū),本工程攔河壩為斜心墻土石壩。由于山區(qū)水位暴漲暴落,所以設(shè)置成興利庫容和攔洪庫容完全不結(jié)合,即正常蓄水位和汛限水位均為2822.4米。本設(shè)計是側(cè)重于壩工部分以擋水建筑物和泄水建筑物為主的土石壩水利樞紐設(shè)計。第一步,通過調(diào)洪演算得到最佳的溢流堰孔口凈寬和堰頂高程方案,比較不同類型的土石壩在施工特點,技術(shù)經(jīng)濟等方面的優(yōu)劣,最終確定大壩壩型為斜心墻土石壩,并且初定了大壩的輪廓尺寸。然后通過土料設(shè)計,對照指標確定了砂礫料場及粘土料場的位置。再選擇壩體的三個典型斷面對大壩進行滲流計算,畫出流網(wǎng)圖,校核
2、滲流逸出處的滲透坡降確定是否滿足要求。然后通過vb編程進行壩坡穩(wěn)定分析,最終進行壩體細部構(gòu)造設(shè)計。第二步,進入主要建筑物設(shè)計階段。確定出大壩的型式及壩址和壩軸線。另外確定該樞紐的組成建筑物,包括擋水建筑物、泄水建筑物、水電站廠房等。第三步,進入第二主要建筑物設(shè)計階段。確定出泄水建筑物的尺寸,型式和結(jié)構(gòu),定為泄水隧洞。然后進行軸線選擇和水力計算,從下泄能力、凈空余幅、挑距和沖刷深度等方面校核設(shè)計的可行性。最后進行細部構(gòu)造設(shè)計。本設(shè)計以《碾壓式土石壩設(shè)計規(guī)SL274-2001》為基本設(shè)計依據(jù),外加參考了與土石壩的有關(guān)資料和書籍。由于知識有限,對于本設(shè)計中的不
3、妥及錯誤之處,懇請批閱批評指正。在設(shè)計過程中得到了王玲玲等老師的指導,再次表示由衷的感。本設(shè)計共歷時9周。06021101王越貞AbstractTheRiverislocatedinsouthwestChina,theprojectincludestheRCCdamwithclaycorewallofearth-rockstyle.Thewaterlevelriseduetostormdownthemountains,sotheactiveStorageisnotcombinedwiththedetentionstorage,thatis,normalw
4、aterlevelandfloodcontrollevelareboth2822.4meters.Thedamwasdesignedinparttofocusonretainingbuildingsanddischargestructure-baseddesignofearth-rockdamwatercontrolproject.Afirststep,throughtheFloodRegulatingandCalculatingtogetthebestnetwidthoftheoverflowweirOrificeandthealtitudeofwei
5、rtop,thencomparedifferenttypesofearth-rockfeaturesinthecourseofconstruction,technicalandeconomicadvantagesanddisadvantages,andultimatelydeterminethetypeofclaydamearth-rockcore,andtheoutlineofaninitialsizeofthedam.Throughthesoilandthendesign,thecontrolindicatorstodeterminethegrave
6、landclaymaterialyardfieldposition.Onceagainchosenthethreetypicalcross-sectionofdamforseepagecalculation,drawnetworkmaps,checkingtheseepageinfiltrationgradienttodeterminewhethertomeettherequirements.UseVisualbasicprogrammingtoanalyzethestability,andultimatelytocarryoutdetailedstru
7、cturaldesignofthedam.Thesecondstep,toenterthemainbuildingdesignstage.Todeterminethetypeandthedamsiteanddamaxis.Inadditiontodeterminethecompositionofthehubstructures,includingretainingstructures,drainagestructures,suchashydropowerplants.Thethirdstepisthesecondmajorphaseofbuildingd
8、esign.TodeterminethesizeofDischargestruc