發(fā)布時間：2018-05-04 14:59

  本文選題：雙護盾TBM + 掘進參數(shù)��； 參考：《鐵道工程學(xué)報》2017年05期

【摘要】：研究目的:青島地鐵在國內(nèi)首次將雙護盾TBM應(yīng)用于城市軌道交通工程,并取得成功,拓寬了雙護盾TBM的應(yīng)用領(lǐng)域。本文結(jié)合雙護盾TBM在青島地鐵2號線的應(yīng)用,基于Mohr-Coulomb準(zhǔn)則,根據(jù)雙護盾TBM正常掘進情況下的刀盤推力、撐靴撐力、圍巖強度之間需要滿足的力學(xué)協(xié)調(diào)性,針對不同圍巖級別,對雙護盾TBM施工中掘進參數(shù)及模式選擇進行研究,從而為雙護盾TBM選型及適應(yīng)性分析提供依據(jù)。研究結(jié)論:(1)對于Ⅱ級、Ⅲ級、Ⅳ級圍巖地層,刀盤推力可由撐靴提供,可采用雙護盾掘進模式;(2)Ⅴ級圍巖(軟巖、強風(fēng)化)條件下,撐靴撐力、圍巖承載力及刀盤推力三者不能滿足力學(xué)協(xié)調(diào)性,滾刀無法成功破巖,故無法實施雙護盾模式施工,可采用單護盾掘進模式,由管片方式提供反力;(3)根據(jù)雙護盾TBM正常掘進情況下的刀盤推力、撐靴撐力和圍巖強度之間的力學(xué)協(xié)調(diào)性,得到不同圍巖級別下相應(yīng)的掘進參數(shù);(4)該研究成果可為城市軌道交通工程TBM施工提供理論參考。
[Abstract]:The purpose of this paper is to apply double-shield TBM to urban rail transit engineering in Qingdao Metro for the first time in China. The application field of double-shield TBM has been widened. This paper combines the application of double shield TBM in Qingdao Metro Line 2, based on the Mohr-Coulomb criterion, according to the mechanical coordination between the thrust of cutter head, the supporting force of boot and the strength of surrounding rock under the condition of normal driving of TBM with double shield, aiming at different surrounding rock level. The selection of tunneling parameters and modes in the construction of double shield TBM is studied, which provides the basis for the selection of double shield TBM and the analysis of its adaptability. Conclusion: for the surrounding rock strata of grade 鈪，

本文編號：1843415