隧不洞開挖 的英文怎麼說
中文拼音 [suìbùdòngkāiwā]
隧不洞開挖
英文
tunnel excavation-
This thesis tries to solve the problems in the design and construction of jinping cascade 2 hydropower station. a typical section is selected to analysis seepage, seepage control and fem numerical simulation. the influence of different plans of excavation and support on seepage field of subsurface water and stability of adjoining rock are studied. the homologous support pattern is suggested according to the research results
本文就錦屏二級水電站（一期）深埋長隧洞的設計和施工中面臨的一些問題，選取隧洞的一個典型斷面進行滲流、滲控分析和開挖及支護的有限元數值模擬，從而就深埋隧洞不同的開挖及支護方式對地下水滲流場及圍巖穩定性的影響和所應採取的支護措施等方面進行了探索、研究。Associated with a project of the planned xuefengshan tunnel with 7. 6 km long during the construction of shaoyang to huaihua expressway in hunan province of shanghai to ruili national trunk highway, this paper firstly makes an introduction of the frequently - used analysis & computation methods for tunnel supporting structure. then, based on the analysis of the basic theory about the interaction mechanism of surrounding rock and support structure, a spatial computation model is made, a coupling numerical computation method with 3 - d elastic - plastic finite element and infinite element is proposed, and a comprehensive analysis has been made to the effects of the overall stability and safety of the surrounding rocks of different characteristics, different classes and under different construction methods. and thus the problem of 3 - d infinite region to which applying the general finite ca n ' t do has been resolved
6公里的雪峰山隧道工程，首先介紹了隧道支護結構的常用分析計算方法；然後通過對隧道施工過程中，洞室穩定性與支護結構相互作用機理的深入分析，建立了隧道施工過程的空間計算模型，提出了採用三維彈塑性有限元-無限元耦合的數值計算方法，綜合分析了隧道在不同圍巖特性和圍巖類別條件下，以及不同施工開挖方案等對隧道圍巖整體穩定和安全性的影響，從而解決了通用有限元方法難以解決的隧道三維無限域問題；其可充分發揮有限元法在分析非線性方面的有效性和成熟性，以及無限元法在分析處理無限域和半無限域方面的精確性和簡便性，為隧道施工過程中圍巖的穩定性分析開辟了一條新的途徑。For the construction of single - arch tunnel within cracked surrounding rocks, 8 tunnel models are set up to study the effect of the earth pressure distribution of the various surrounding rocks due to excavation. the relationships between the loosen zone of tunnel radial earth pressure and the tunnel diameter, the characteristics of surrounding rocks and the exposed time are revealed. it is showed that the pressure loosen radius is 1. 2 ~ 2. 0 tunnel diameters and the strongly loosen radius drops to 0. 5 ~ 1. 0 one for double lane tunnel
對于單拱破碎圍巖隧道的構築問題，作者設置了8個隧道模型，研究開挖對不同隧道圍巖壓力分佈的影響，揭示了洞周徑向壓力的鬆弛范圍與洞徑、圍巖特性、裸露時間的關系，得到雙車道隧道壓力鬆弛半徑為1 . 2 2 . 0倍洞徑，強烈鬆弛區半徑為0 . 5 1 . 0倍洞徑。Abstract : in order to provide the reasonable parameters in the reliability analysis of tunnel structure and the criterion in the quality control of tunnel engineering, in this paper, the over - under - excavated values of the real - state outline of tunnel excavation are obtained by the near - field photographic method. by using mathematical statistic method, the figure features and probability distributions of the over - under - excavated values of the surrounding rock, including deferent positions of same cross section, are analyzed
文摘:採用近景攝影的方法，從隧道開挖毛洞中獲取圍巖超欠挖數據，通過數理統計的方法，分析各類圍巖超欠挖的數字特徵及概率分佈，同時得出各類圍巖超欠挖在隧道斷面不同部位的分佈規律，為隧道結構的可靠度研究提供可靠參數，也為隧道工程質量控制提供基準As to the tunnels of jinping hydroelectric power station in sicuan province, the thesis discusses how to reasonably consider the initial stress field when designing a large - scale tunnel with high initial stress and deep buried. first, by analyzing of the rock lab tests and discusses the feature of regional geomorphology. explains the production of initial stress field, analyze the initial stress of jinping hydroelectric power station ; second, using the fem, the paper creates the real model of region. according to the results of stress measurement point, by combining of ann and fem to decide the boundary condition, the paper calculates the initial stress field ; at last, the paper analyzes the influence of the initial stress field formed from different condition on the deformation and stress of the surrounding rock, and the main factor to influence the initial stress. on the basis of the former work, the author proposes some proposals, which will be helpful for studying and designing of the similar undergroun d engineering
首先從巖體的應力?變形的特性入手，並結合工程區域的地形地貌特徵，對巖體初始地應力場的形成做出解釋，結合錦屏水電站初始地應力的現狀提出了將地應力場進行分帶；然後建立整個工程區的實體模型，在地質分析的基礎上，以工程區右半部分為代表，參照實測點的初始地應力值，採用了神經網路與有限元相結合的方法反演了該區域的初始地應力場；最後模擬隧洞的開挖，通過計算比較分析了初始地應力場對處于不同應力帶內的隧洞圍巖穩定性的影響，在此基礎上提出了作者的建議，力圖為該類工程的研究設計工作提供有益的幫助。Secondly, grounded on the study of the distribution of the high external waterpressure and high geostress and the characteristic of the rock in engineering area, the paper built the elastoplastic fem numerical simulation model, and think over the procedure in tunnels excavation and the history of work of water load, and then get the relations between the different tunnels diameter, different permeability coefficient and depth of the grouting rock and the deformation, stress distribution and plastic range of the surrounding rock and support structure. finally, according to the modern design theory of tunnels construction, the particular design of country rock reinforcement and support structure are researched and presented for diversion tunnels
接著，本文在深入研究工程區高外水壓力及高地應力分佈規律及巖體特性的基礎上，建立起高地應力、高外水壓力作用下隧洞圍巖結構非線性有限元模擬計算模型，然後考慮隧洞的開挖過程、水荷載的作用歷史，通過計算分析得出了不同洞徑、不同的灌漿圈滲透系數和不同的灌漿圈深度以及不同開挖過程與圍巖及支護結構的應力、位移和塑性區的關系。Furthermore, total energy release of surrounding rockmass obtained by lerr can be used as optimal index for optimal design of excavation schemes
對太平驛水電站引水隧洞工程不同開挖步長下能量釋放率指標的算例進行分析。For some underground chamber construction, the stability of surrounding rock different excavation method and so on have been studied
對沙灣隧洞施工過程中圍巖的穩定性以及不同開挖方式等問題進行了研究。The construction of the multiple - arch tunnel is deeply related to the form of center partition, the tunnel ' s section and excavation method etc. the change regularities of stress field caused by excavation are studied by 4 multiple - arch unlined tunnel model tests. the difference in lining for various multiple - arch sections is analyzed and the mechanics characteristics of center partition is discussed. then, a reasonable construction method for multiple - arch tunnel and a better section are put forward
通過4個連拱模型試驗，研究了連拱毛洞開挖引起的應力場變化規律，對不同的連拱斷面的襯砌受力差異進行了深入的分析，同時對中隔墻的受力特點也作了探討，提出了合理的連拱隧道構築方法及優化斷面圖。分享友人