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土石坝土工薄膜防渗结构优化设计研究及应用(鄢俊)

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ApP7KF0土石土工薄膜防渗结构优化设计研究及应用水利论文A2|xC0O V(F}o2c&B8C

-@$q!zlb0【作者】鄢俊 【导师】李定方; 陶同康水利论文V"sp%p+Sj@3Jx
【作者基本信息】南京水利科学研究院,水力学及河流动力学,2000年,硕士

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【中文摘要】 本文在前人研究工作的基础上,针对我国目前土石坝上工薄膜防渗结构设计和应用的需要,围绕土石坝土工薄膜防渗结构的优化设计作了部分试验和理论分析工作,并编制了土石坝上工薄膜防渗结构优化设计软件包.其主要内容分别为: A、在室内对土石坝防渗工程中常用的高密度聚乙烯(HDPE)进行了大量的试验,包括薄膜的抗拉强度、渗透系数、应力-应变等基本特性试验,并对试验成果进行了相应的分析。 B、进行了土工薄膜与坝体材料间相互作用的试验研究,包括土工薄膜与土砂之间的摩擦试验分析、土工薄膜在水压力作用下的抗顶破和抗穿刺强度试验和分析;同时,对上有土体覆盖层的土工薄膜抗顶破强度进行了分析,其中考虑了土体的“拱形”作用。 C、对上工薄膜防渗结构型式进行了总结和分析。并导出了渗透力的作用下斜铺在坝坡上的上工薄膜防渗层稳定性安全系数计算公式。 D、综合研究分析了土石坝土工薄膜防渗结构影响因素,对土工薄膜防渗结构进行了优化设计研究,并应用 Visual Basic语言编写了相应的软件包,对今后土石坝土工薄膜防渗结构设计深入研究和应用提供参考。 E、应用渗流基本理论和数值计算方法,比较了土石坝土工薄膜不同防渗型式的防渗效...更多果。 F、结合工程实例,进行渗流场和应力场耦合分析,明确了上工薄膜对土石坝主应力、沉降和位移的影响。  还原水利论文&lwF"^ e

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【英文摘要】 Base on former researcher work, the paper have done some research works foroptimal design of geomembrane anti-seepage structure in embankment dams. Andwrite the corresponding software. The major content in this paper: 1.the paper carryout lots test on HDPE, the conten involve tension of geomembrane, pentrability ofgeomembrane; stress-strain of geomembrane. and analysis these results of test; 2.thepaper carry out test on interact between geomembrane and materials of dam. Thesetest involve friction test, puncture test etc.. And analysis these test results.3. the papersummarize and analysis the geomembrane anti-seepage structure in embankment dam.And construe the safty of the geomembrane anti-seepage structure in embankmentdam. 4.the paper apply VB6.0 to write the software of optimal design ofgeomembrane anti-seepage structure in embankment dam. 5. the paper carry throughtwo-dimension seepage numerical calculattion. And compare the effects of anti-seepage to different types of anti-seepag...更多e in embankment. 6. the paper carry out thecalculation of coupled stress and seepage for dams with a geotextile/geomembranecomposite liner. And construe the major stress, settlement etc in dams.  还原

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【中文关键词】 土石坝; 薄膜特性; 优化设计; 软件包; 防渗效果; 耦合计算
x5n5b @#G4Y L5HC,F0【英文关键词】 Embankment dams; Characteristic of geomeembrane; Optimal design; software; effect of anti-seepage; Calculation of coupled stress and seepage.

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TAG: 鄢俊 土工 土石 薄膜 结构
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