隧道盾構(gòu)-畢設(shè)論文外文翻譯(翻譯-原文

ID:16338790

大小:218.91 KB

頁數(shù):13頁

時間:2018-08-09

隧道盾構(gòu)-畢設(shè)論文外文翻譯(翻譯-原文_第1頁
隧道盾構(gòu)-畢設(shè)論文外文翻譯(翻譯-原文_第2頁
隧道盾構(gòu)-畢設(shè)論文外文翻譯(翻譯-原文_第3頁
隧道盾構(gòu)-畢設(shè)論文外文翻譯(翻譯-原文_第4頁
隧道盾構(gòu)-畢設(shè)論文外文翻譯(翻譯-原文_第5頁
資源描述:

《隧道盾構(gòu)-畢設(shè)論文外文翻譯(翻譯-原文》由會員上傳分享,免費在線閱讀,更多相關(guān)內(nèi)容在學術(shù)論文-天天文庫。

1、畢業(yè)設(shè)計(論文)外文文獻翻譯院系:土木工程與建筑系年級專業(yè):土木工程姓名:學號:附件:盾構(gòu)SHIELDS指導老師評語:指導教師簽名:年月日SHIELDS【Abstract】Atunnelshieldisastructuralsystem,usedduringthefaceexcavationprocess.Thepapermainlydiscussestheformandthestructureoftheshield.Propulsionfortheshieldisprovidedbyaseriesofhydraulicjacksinstalledinth

2、etailoftheshieldandtheshieldiswidespreadusedintheundergroundenvironmentwherecannotbeinlongtimestable.Themainenemyoftheshieldisgroundpressure.Non-uniformgroundpressurecausedbythesteeringmayactontheskintendstoforcetheshieldofflineandgrade.Andworkingdecksinsidetheshieldenabletheminer

3、stoexcavatetheface,drillandloadholes.【Keywords】shieldhydraulicjacksgroundpressuresteeringworkingdecksAtunnelshieldisastructuralsystem,normallyconstructedofsteel,usedduringthefaceexcavationprocess.Theshieldhasanoutsideconfigurationwhichmatchesthetunnel.Theshieldprovidesprotectionfo

4、rthemenandequipmentandalsofurnishedinitialgroundsupportuntilstructuralsupportscanbeinstalledwithinthetailsectionoftheshield.Theshieldalsoprovidesareactionbaseforthebreast-boardsystemusedtocontrolfacemovement.Theshieldmayhaveeitheranopenorclosedbottom.Inaclosed-bottomshield,theshie

5、ldstructureandskinprovide360-degreegroundcontactandtheweightoftheshieldrestsupontheinvertsectionoftheshieldskin.Theopenshieldhasnobottomsectionandrequiressomeadditionalprovisionisapairofsidedriftsdriveninadvanceofshieldexcavation.Railsorskidtracksareinstalledwithinthesesidedriftst

6、oprovidebearingsupportfortheshield.Shieldlengthgenerallyvariesfrom1/2to3/4ofthetunneldiameter.Thefrontoftheshieldisgenerallyhoodedtosothatthetopoftheshieldprotrudesforwardfurtherthantheinvertportionwhichprovidesadditionalprotectionforthemenworkingatthefaceandalsoeasepressureontheb

7、reast-boards.Thesteelskinoftheshieldmayvaryfrom1.3to10cminthickness,dependingontheexpectedgroundpressures.Thetypeofsteelusedintheshieldisthesubjectofmanyargumentswithinthetunnelingfraternity.SomeprefermildsteelintheA36categorybecauseofitsductilityandcaseofweldingintheundergrounden

8、vironmentwhereprecisionworkisdiff

當前文檔最多預覽五頁,下載文檔查看全文

此文檔下載收益歸作者所有

當前文檔最多預覽五頁,下載文檔查看全文
溫馨提示:
1. 部分包含數(shù)學公式或PPT動畫的文件,查看預覽時可能會顯示錯亂或異常,文件下載后無此問題,請放心下載。
2. 本文檔由用戶上傳,版權(quán)歸屬用戶,天天文庫負責整理代發(fā)布。如果您對本文檔版權(quán)有爭議請及時聯(lián)系客服。
3. 下載前請仔細閱讀文檔內(nèi)容,確認文檔內(nèi)容符合您的需求后進行下載,若出現(xiàn)內(nèi)容與標題不符可向本站投訴處理。
4. 下載文檔時可能由于網(wǎng)絡(luò)波動等原因無法下載或下載錯誤,付費完成后未能成功下載的用戶請聯(lián)系客服處理。
关闭