深埋式輸水隧洞初期支護對二次襯砌結構的受力影響研究
[Abstract]:At present, a large number of long-distance cross-basin water diversion projects have been built in China, such as the South-to-North Water transfer Project, the Han to Wei Project and the "Dishui Network Project" in Shanxi Province. Deep buried water diversion tunnel plays an important role in these water diversion projects. However, in most water conservancy projects, the influence of initial support on secondary lining in the process of tunnel excavation is not taken into account in the design of secondary lining structure, and it is completely regarded as a safety reserve, which is inconsistent with the actual project, which often leads to the large section size of secondary lining structure and too conservative design. Although it can ensure the safety of the tunnel to a certain extent, it results in the increase of engineering quantity and some unnecessary waste. The deep reason is that there are still many problems in the theory and calculation of lining structure. In the composite lining, what role the initial support plays in the tunnel construction, what is the influence of the initial support on the secondary lining structure, is the main bearing structure, what is the bearing ratio, or the safety reserve, these are the problems that perplexed the designers. These problems have become the bottleneck in the design of deep buried water transmission tunnel in China, which seriously restricts the progress of tunnel design level. Therefore, combined with the actual situation of the project, it is very necessary to analyze the bearing mechanism of the initial support and the secondary lining structure, and to carry out the research on the influence of the initial support of the deep buried water tunnel on the stress of the secondary lining structure. In view of the above problems, by summing up the mechanism of initial support and the calculation method of secondary lining, the bearing mode of initial support and secondary lining is analyzed, and the load release coefficient analysis method based on finite element analysis is put forward. By using this method, taking the typical deep buried water tunnel of the Yellow River diversion Project in the middle of Shanxi Province as the research object, the numerical model is established to simulate the release process of surrounding rock stress in different stages of the construction of the water diversion tunnel, the influence of the initial support on the secondary lining structure under different load release coefficients and the field monitoring data are analyzed, and the general laws of the load ratio of the initial support load and the internal force of the secondary lining structure are summarized. It provides a reference for the design optimization of lining section of the same kind of deep buried water transmission tunnel.
【學位授予單位】:華北水利水電大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:TV31;TV554
【參考文獻】
相關期刊論文 前10條
1 鹿寧;邱敏;陶磊;;地下隧道支護結構的受力分析[J];電網(wǎng)與清潔能源;2014年05期
2 鄭穎人;王永甫;;隧道穩(wěn)定性分析與設計方法講座之一:隧道圍巖壓力理論進展與破壞機制研究[J];隧道建設;2013年06期
3 朱彥鵬;柴江;邵繼新;;應用荷載釋放系數(shù)法模擬黃土隧道施工[J];蘭州理工大學學報;2011年05期
4 李術才;趙巖;李利平;周毅;劉欽;;超大斷面鐵路隧道施工斷面綜合荷載釋放過程研究[J];巖土力學;2011年09期
5 徐升;;地下洞室支護理論初探[J];四川水力發(fā)電;2011年02期
6 李明;賈磊;;軟巖隧道開挖的數(shù)值模擬與研究[J];交通標準化;2008年13期
7 肖明;張志國;陳俊濤;范國邦;;不同屈服條件對地下洞室圍巖穩(wěn)定影響研究[J];地下空間與工程學報;2008年04期
8 周憲偉;袁正國;邢姣秀;;盾構法施工模擬荷載釋放系數(shù)的研究[J];森林工程;2007年03期
9 鄭穎人;;巖土材料屈服與破壞及邊(滑)坡穩(wěn)定分析方法研討——“三峽庫區(qū)地質災害專題研討會”交流討論綜述[J];巖石力學與工程學報;2007年04期
10 張黎明;鄭穎人;王在泉;王建新;;有限元強度折減法在公路隧道中的應用探討[J];巖土力學;2007年01期
相關會議論文 前1條
1 鄭穎人;胡文清;王敬林;;強度折減有限元法及其在隧道與地下洞室工程中的應用[A];中國土木工程學會第十一屆、隧道及地下工程分會第十三屆年會論文集[C];2004年
相關博士學位論文 前2條
1 文競舟;隧道初期支護力學分析及參數(shù)優(yōu)化研究[D];重慶大學;2012年
2 房倩;高速鐵路隧道支護與圍巖作用關系研究[D];北京交通大學;2010年
相關碩士學位論文 前10條
1 于清洋;盾構隧道雙層襯砌結構橫向相互作用機理研究[D];西南交通大學;2016年
2 秦娟;隧道復合式襯砌承載模式研究[D];石家莊鐵道大學;2015年
3 李寬;齊熱哈塔爾水電站深埋引水隧洞襯砌結構有限元分析[D];河北工程大學;2014年
4 齊龍飛;初期支護設計方法優(yōu)化及二次襯砌施作時機研究[D];石家莊鐵道大學;2014年
5 周譽;深埋非圓形隧洞錨桿長度研究[D];華北電力大學;2013年
6 彭信;隧道復合式襯砌計算模型及力學機理研究[D];石家莊鐵道大學;2012年
7 李雨;巖溶區(qū)圍巖與隧道初期支護結構相互作用研究[D];廣西大學;2012年
8 郭艷;瑪河一級電站引水隧洞圍巖穩(wěn)定及襯砌結構分析研究[D];石河子大學;2011年
9 何成滔;軟巖隧道支護設計優(yōu)化研究[D];西安科技大學;2011年
10 李映;隧道噴錨支護結構承載作用機理及應用研究[D];南京理工大學;2009年
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