本文選題：硬巖隧道掘進(jìn)機(jī)　切入點(diǎn)：盤形滾刀　出處：《天津大學(xué)》2014年碩士論文

【摘要】：全斷面巖石隧道掘進(jìn)機(jī)(TBM)以其快速、環(huán)保、安全等優(yōu)點(diǎn),在巖石隧道挖掘中被廣泛使用。在隧道施工中,盤形滾刀消耗量大且價(jià)格昂貴,不合理的換刀會(huì)對(duì)工期、施工成本以及TBM本身造成不利影響,研究盤形滾刀的磨損特性以及預(yù)測(cè)滾刀磨損具有重要意義。目前,有關(guān)TBM滾刀磨損的研究很多,主要集中在對(duì)磨損機(jī)理定性的研究或者通過工程數(shù)據(jù)得到滾刀磨損的經(jīng)驗(yàn)公式,從機(jī)理角度定量分析滾刀磨損的研究還需進(jìn)一步深入。本文通過M-200型磨損試驗(yàn)機(jī)進(jìn)行了干摩擦狀態(tài)下的滑動(dòng)摩擦磨損試驗(yàn),模擬了盤形滾刀的磨損行為。通過分析試樣的磨損形貌,分析了滾刀磨損機(jī)理。利用試驗(yàn)結(jié)果定量地分析了巖石硬度以及摩擦系數(shù)對(duì)滾刀磨損量的影響規(guī)律,并對(duì)試驗(yàn)結(jié)果進(jìn)行了擬合。同時(shí)定性地分析了潤滑對(duì)摩擦狀態(tài)以及磨損量的影響。試驗(yàn)結(jié)果顯示在大載荷狀態(tài)下磨損形式發(fā)生了轉(zhuǎn)變,在大載荷作用下,磨損一定時(shí)間后,將會(huì)出現(xiàn)疲勞磨損,并分析了疲勞磨損對(duì)磨損量的影響。利用軟件ABAQUS建立了盤形滾刀破巖過程的有限元模型,基于該模型研究了滾刀滑移現(xiàn)象以及滾刀受力分布情況。通過該模型定量地研究了滾刀貫入度以及滾刀與巖石間的摩擦系數(shù)對(duì)滾刀滑移的影響,并建立了滾刀滑移計(jì)算模型。同時(shí),利用有限元模型研究了破巖過程中滾刀載荷分布情況,發(fā)現(xiàn)滾刀載荷分布形式為中間凸起,兩邊扁平,有限元結(jié)果與CSM模型中相關(guān)結(jié)論基本一致。根據(jù)以上結(jié)論,綜合考慮振動(dòng)對(duì)滾刀磨損的影響,建立了盤形滾刀磨損預(yù)測(cè)模型。該模型同時(shí)考慮了巖石特性以及TBM操作參數(shù)對(duì)滾刀磨損的影響。利用該模型結(jié)合大伙房隧道施工數(shù)據(jù),對(duì)施工中滾刀的磨損量進(jìn)行了預(yù)測(cè),預(yù)測(cè)結(jié)果與實(shí)際滾刀磨損值較為接近。所得結(jié)果可為TBM刀具磨損預(yù)測(cè)提供參考。
[Abstract]:Full-section rock tunnel tunneling machine (TBM) is widely used in rock tunnel excavation due to its advantages of fast, environmental protection and safety.In tunnel construction, the consumption of disc hob is large and the price is expensive, and the unreasonable change of cutter will adversely affect the time limit, construction cost and TBM itself. It is of great significance to study the wear characteristics of disc hob and to predict the wear of hob.At present, there are a lot of researches on TBM hob wear, mainly focused on the qualitative study of wear mechanism or the empirical formula of hob wear obtained from engineering data. The research on quantitative analysis of hob wear from the angle of mechanism still needs to be further studied.In this paper, the sliding friction and wear tests under dry friction are carried out on M-200 wear tester, and the wear behavior of disc hob is simulated.The wear mechanism of hob was analyzed by analyzing the wear morphology of the specimen.The influence of rock hardness and friction coefficient on the wear of hob is analyzed quantitatively by using the test results, and the experimental results are fitted.At the same time, the influence of lubrication on friction state and wear quantity is analyzed qualitatively.The results show that the wear form has changed under the condition of heavy load, and fatigue wear will appear after wear for a certain time under the action of large load. The influence of fatigue wear on wear amount is analyzed.The finite element model of rock breaking process of disc hob is established by using software ABAQUS. Based on this model, the slip phenomenon of hob and the force distribution of hob are studied.Through this model, the influence of the penetration degree of hob and the friction coefficient between hob and rock on the slip of hob is studied quantitatively, and the calculation model of hob slip is established.At the same time, the finite element model is used to study the load distribution of hob in the process of rock breaking. It is found that the load distribution form of hob is middle protruding and flattened on both sides. The finite element results are basically consistent with the relevant conclusions in CSM model.According to the above conclusion, considering the influence of vibration on the wear of hob, the prediction model of disc hob wear is established.The model also considers the influence of rock characteristics and TBM operating parameters on hob wear.Using the model and the construction data of Dahuofang tunnel, the wear quantity of hob in construction is forecasted, and the predicted result is close to the actual value of hob wear.The results can provide reference for TBM tool wear prediction.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U455.31

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張占杰;劉樸;趙海峰;袁國;趙金華;吳志生;;TBM滾刀刀圈材料性能的研究[J];鋼鐵研究;2013年01期

2 譚青;易念恩;夏毅敏;徐孜軍;朱逸;宋軍華;;TBM滾刀破巖動(dòng)態(tài)特性與最優(yōu)刀間距研究[J];巖石力學(xué)與工程學(xué)報(bào);2012年12期

3 莫振澤;李海波;周青春;何恩光;鄒飛;朱小明;趙羽;;基于UDEC的隧道掘進(jìn)機(jī)滾刀破巖數(shù)值模擬研究[J];巖土力學(xué);2012年04期

4 金艷秋;劉志華;楊亮;鄭廣爽;;引洮工程9號(hào)隧洞TBM滾刀磨損原因分析[J];建筑機(jī)械化;2011年06期

5 孫金山;陳明;陳保國;盧文波;周傳波;;TBM滾刀破巖過程影響因素?cái)?shù)值模擬研究[J];巖土力學(xué);2011年06期

6 王旭;趙羽;張寶剛;馬漢春;陳雷;;TBM滾刀刀圈磨損機(jī)理研究[J];現(xiàn)代隧道技術(shù);2010年05期

7 蘇利軍;孫金山;盧文波;;基于顆粒流模型的TBM滾刀破巖過程數(shù)值模擬研究[J];巖土力學(xué);2009年09期

8 劉進(jìn)志;智小慧;郭京波;;盾構(gòu)掘削刀具簡(jiǎn)述[J];工程機(jī)械;2009年06期

9 張照煌;紀(jì)昌明;;全斷面巖石掘進(jìn)機(jī)盤形滾刀刃破巖點(diǎn)弧長的解析解及應(yīng)用研究[J];應(yīng)用基礎(chǔ)與工程科學(xué)學(xué)報(bào);2009年02期

10 李笑;蘇小江;;盾構(gòu)滾刀磨損的多元非線性回歸預(yù)測(cè)[J];遼寧工程技術(shù)大學(xué)學(xué)報(bào)(自然科學(xué)版);2009年02期

，

本文編號(hào)：1715593