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ID:37230511
大小:5.73 MB
页数:72页
时间:2019-05-20
《渝黔高速公路出境段路域生态恢复工程设计》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、西南交通大学硕士研究生学位论文第1页摘要随着我国交通运输业的迅速发展,高速公路建设已进入辉煌时期。伴随着人们环保意识的提高,尽管在高速公路选线时即采取多种避让措施以减少工程建设对原有生态环境的影响,然而由于高速公路工程量大、线型指标要求高,其建设过程中仍不可避免会对沿线生态环境造成破坏,致使3~5年甚至更长时间内边坡植被都难以恢复。为保护高速公路生态环境,促进当地社会、经济和环境的可持续发展,本论文以渝黔高速公路出境段为例,进行了其路域生态恢复的探讨和设计。论文在查阅大量国内外有关高速公路生态恢复的理论与实践基础上,总结了现
2、有研究已取得的成果以及还存在的不足,据此结合渝黔高速公路出境段的环境特征,开展了占地5336m2的现场苗圃实验。实验选取来自公路沿线、云南和非洲的52品种进行,通过培育,成活率达到95%,初步确定其中22种最适合在当地栽种。此后,在K127+610左侧边坡选择面积为5021m2的岩质边坡进行边坡实验,实验表明,优选物种长势良好,成活率达到93%,故可在全线推广。根据上述实验结果,论文在最后进行了渝黔高速公路出境段的生态恢复设计,包括边坡、边沟、中央分离带、取弃土场等。经检验,在施工3年后达到了较好的生态恢复效果。关键词:高速
3、公路;生态恢复;苗圃实验;边坡实验;I程设计AbstractConstructionofhighwayhasbeenforgedaheadasplendidperiodfoIlowingtherapiddevelopmentofthetraffictransportationindustry.Althoughmanymeasurementsareadoptedtoreducethejnfluenceonoriginalecologyenvironment,alongwithpeople’Simprovementofenvir
4、onmentalconsciousness,destructionjSinevitablethoughalItheconstructionprocess,becauseofhugeworkandhighrequirementoftheexpressway,whichresultsinimpossibilityofecologyrestorationin3to5years.ThispapertakestheleavingsectionofthehighwayfromChongQingtoGuiyangasanexample,d
5、iscussinganddesigningitsecologyrestoration,inordertoprotecttheecologyalongandpromotethesustainabledevelopmentbetweensociety,economyandenvironment.Basingonreferencingalargenumberofpapersathomeandabroadintheecologicalrestorationofthehighwayontheoryandpractice,thispap
6、ersummarizestheachievementandtheinsufficiencyofthesereseamhes.Thus,thispaperestablishesanursegardenwhichoccupied5336mzandselects52speciesthatfromthealongway,YunnanandAfrica.Resultsoftheexperimentindictsthat95%survivalratehasbeengottenand22speciescouldsuittheIocaIen
7、vironmentwell.Consequently,jtselectsaslopewhoseareareaching5021mztocarryouton.siteexperiment,withtheresultthatalIspeciesselectedgrowingwelIandreachingasurvivaIrateto93%,whichimpliesthatthesespeciescouldbecroppedalongalltheline.AtJast,thispapercatriesoutdesignsforth
8、eleavingsectionofthehighwayfromChongQingtoGuiyang,includingtheslope,sideditch。thecentraIseparationbeltandtheborrowpitandspoilaround.Theseworkhasp
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