本文選題：隧道 + 滲流��； 參考：《重慶交通大學》2014年碩士論文

【摘要】：隨著地下空間的開采，不可避免的出現了隧道與其他建（構）筑物相互影響的問題，尤其是繁華的城市地段，隧道間、隧道與其他建筑物間的距離越來越小，因此有必要研究一下近距離交疊隧道相互影響的問題。隧道是一種地下線狀結構物，在其修建的過程中往往會遇到各種不同性質的地下巖石或土體，尤其是深埋隧道，其通過的地段地質情況更為復雜。隧道在修建過程中常常會遇到地下水，由于隧道的開挖改變了原有地下水的滲流情況，隧道成為了地下水排泄的通道，因此隧道的涌水成為隧道施工過程中常見的地質災害之一。另外隨著我國水資源的逐漸消耗，不排水隧道越來越多。針對這種情況研究一下考慮地下水存在的情況下隧道間安全距離的問題很有意義。 本文以南山地區(qū)隧道群為背景，根據地下水滲流規(guī)律，，按照流固耦合理論，模擬南山地區(qū)不同時期修建的隧道，從而來研究考慮地下水時隧道合理間距的問題。希望能為隧道工程設計、施工做參考。本文主要做了以下工作： ①地下水滲流理論和固結理論研究； ②襯砌水壓力理論研究以及在FLAC中模擬實現的方法； ③使用FLAC模擬了早期隧道的開挖、水位上升等以及對隧道襯砌的影響； ④新隧道的開挖對孔隙水壓力分布、舊隧道襯砌內力的影響； ⑤兩隧道間距不同時，襯砌內力、地表沉降的變化； ⑥分析模擬結果，得出合理間距的范圍。
[Abstract]:With the exploitation of underground space, the interaction between tunnels and other buildings is inevitable, especially in the bustling urban areas, the distance between tunnels and other buildings is getting smaller and smaller. Therefore, it is necessary to study the interaction of close-over tunnels. Tunnel is a kind of underground linear structure. In the process of its construction, there are many kinds of underground rock or soil, especially the deep buried tunnel, which are more complicated in geological conditions. In the process of tunnel construction, groundwater is often encountered. Because the excavation of tunnel changes the seepage situation of the original groundwater, the tunnel becomes the channel of groundwater discharge. Therefore, water gushing becomes one of the common geological hazards in tunnel construction. In addition, with the gradual consumption of water resources in China, more and more undrained tunnels. In view of this situation, it is meaningful to study the safe distance between tunnels considering the existence of groundwater. In this paper, the tunnel group in Nanshan area is taken as the background, according to the law of groundwater seepage, according to the theory of fluid-solid coupling, the tunnel built in different periods in Nanshan area is simulated, so as to study the reasonable distance between tunnels when considering groundwater. Hope to be a reference for tunnel engineering design and construction. The main work of this paper is as follows: (1) study on groundwater seepage theory and consolidation theory; (2) the theoretical study of lining water pressure and the method of simulation in FLAC; (3) FLAC is used to simulate the early tunnel excavation, water level rise and its influence on tunnel lining. (4) the influence of excavation of new tunnel on pore water pressure distribution and internal force of lining of old tunnel; (5) the variation of lining internal force and surface settlement with different spacing between the two tunnels; 6 the range of reasonable spacing is obtained by analyzing the simulation results.
【學位授予單位】：重慶交通大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U452

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本文編號：1936349