natural tunnel 中文意思是什麼
natural tunnel
解釋
天然隧洞-
In view of the natural conditions in loess area of gansu, in the light of investigation conditions of seepage of built loess and weak rock highway tunnels in this area and classification of water gushing conditions for railway tunnels, and by engineering analogism, the classification of tunnel water gushing types suited the structure design of highway tunnel waterproof and drainage, and the three methods for checking and subdividing water gushing types are presented
摘要針對甘肅黃土區的自然條件，依據該地區已建黃土及軟巖公路隧道滲漏水調查情況和鐵路隨道涌水狀態分類，運用工程類比法提出適合該地區公路隧道防排水結構設計的隧道涌水類型劃分及對涌水類型校核與細分的三種方法。 -
Has many beautiful scenery scenic spots enshi to advantage sichuan, for instance the hoodoo, for instance leaps the natural tunnel, i deeply love own extremely hometown
恩施到利川有著許多美麗的風景名勝，比如石林，比如騰龍洞，我十分熱愛自己的家鄉。 -
In this paper, the finite - element numerical analysis calculation is applied to the foundation of high - rise and multi - floor building and the evolvement law of stress and displacement of tunnel used by urban traffic to explore the mutual influence between the wall rock of underground space and high - rise building foundation, taking account of the specific construction situation in the " sanmu garden " project in dadukou district in chongqing, from the perspective of underground space static - force structure stability analysis to open a underground tunnel with 6m in span and 7. 5m in height for track traffic 20m below the surface. this paper, taking considerations of three different states, i. e. the natural state without any artificial interference, the state of high - rise buildings on the surface, and the underground tunnel state with excavation for track traffic, and four plane lines and four vertical lines, analyzes and studies the distributing law of stress and displacement of calculation section from the following aspects : ( 1 ) the main stress vectorgraph, displacement distribution graph ( ux, uy ) and chromatogram graph of stress isoline ( 1, 2, xy ) of section under different states ; ( 2 ) the contrastive distribution curve of stress ( 1, 2, xy ) of different plane and vertical lines under the same state ; ( 3 ) the contrastive distribution curve of stress ( 1, 2, xy ) of the same plane and vertical lines under different states, wishing to provide references for underground space utilization and project designing and construction of the tunnel under high - rise buildings in the future
本文結合重慶市大渡口區「三木花園」開發建設項目，從地下空間靜力結構穩定性分析角度出發，針對在該項目中涉及的高層和多層建築物以及在其地下20米處開挖了一個用於軌道交通的跨度6米，高7 . 5米的地下隧道這一具體工程情況，採用2d - 3d -有限元結構分析程序對高層與多層建築物的地基基礎及其與城市軌道交通使用的地下隧道圍巖的應力與位移演變規律進行了有限元數值分析計算，探索了地下空間圍巖與高層或多層建築物地基基礎之間的相互影響，通過考慮未受到任何人為擾動影響的天然狀態、地表存在多層或高層建築物狀態和地下開挖用於軌道交通的地下隧道狀態等三種不同狀態以及4個水平剖線和4個垂直剖線等不同情況，從以下幾個方面具體分析研究了計算斷面的應力與位移分佈規律： （ 1 ）在各種不同狀態下計算斷面的主應力矢量圖、位移分布圖（ ux 、 uy ）以及應力等值線色譜圖（ _ 1 、 _ 2 、 _ （ xy ） ）等； （ 2 ）相同狀態下不同水平與垂直剖線的應力_ 1 、 _ 2和_ （ xy ）對比分佈曲線； （ 3 ）不同狀態下相同水平或垂直剖線的應力_ 1 、 _ 2和_ （ xy ）的對比分佈曲線等，為今後在對地下空間的開發利用以及在高層建築物地下開挖硐室時的工程設計和工程施工提供參考依據。 -
The structure which is adopted according to the natural topography, such as shed - tunnel or half - tunnel, should be adopted to protect the natural environment and slope in the complicated zone adjacent to mountain
在路線傍山布置地段，構造物應順應地形，提倡設置棚洞、半隧道，以達到保護邊坡和自然環境的目的。 -
In the supergene zones of xialei manganese deposit in guangxi, south china, there is abundant resource of natural cryptomelane, which is well known as a manganese oxide octahedral molecular sieve having a well - defined 2 2 tunnel structure oms - 2 with k
錳鉀礦是一種有孔道結構的錳氧化物八面體分子篩oms - 2 ，具有良好的催化氧化性和離子交換性。 -
As to the current problems existing in the identification for these flutter derivatives, the dissertation tries to trace the development in the identification for the past unsteady aerodynamic forces of long - span bridges. it also investigates the method for flutter and buffeting analysis and the flutter derivatives. based on the present methods used in obtaining the unsteady aerodynamic forces and flutter derivatives, and co - funded by a natural scientific fund from the nation and a key project fund from the railway ministry, the current research has attempted to develop a device which can be employed in the wind tunnel to test flutter derivative through a forced vibration method
鑒于目前橋梁斷面顫振導數識別的水平和存在的問題，本文通過對大跨度橋梁非定常氣動力、顫振分析方法及顫振導數識別方法的回顧和評述，基於現有的非定常氣動力和顫振導數的測試方法，在國家自然科學基金與鐵道部重點學科基金的聯合資助下，研究開發了一套在風洞中採用強迫振動法測試顫振導數的裝置。 -
In order to protect the natural environment of the zone adjacent to mountain of right no. 2 laoshan highway tunnel in nanjing, china, the design of shed - tunnel was adopted through economical and technical comparison
摘要為了保護南京老山二號公路隧道右線傍山段的自然環境，採用錨噴支護與棚洞結構相結合的傍山隧道結構形式，形成互為補充的完整受力體系和邊坡防護工程，減小了刷坡范圍。 -
The international wind engineering circle has emphasized the studies on this area to the refinement of nonlinear wind - induced vibrations, the precise identification of aerodynamic parameters for structures as well as the real simulation of natural turbulent flow field for wind tunnel tests
國際風工程界對結構風效應的研究已著重於非線性風致振動的精細化，結構氣動參數的精確識別以及為風洞試驗所需的紊流風場的真實模擬。 -
Numerical simulation on natural ventilation mode of smoke control in underground railway tunnel fire
地鐵隧道火災自然排煙模式數值模擬研究 -
Time tunnel 1 - natural environment
時光隧道一：自然環境 -
The deleterious effects of pressurized seepage, percolating through the natural discontinuities in the rock mass, have generally been ignored, resulting in tunnel alignments with inadequate lateral and vertical cover
壓力隧洞傳統計算方法假定圍巖是不透水介質，忽略了圍巖中滲流和滲透力的不利影響，從而導致設計時隧洞軸線方向上覆蓋層厚度不足。 -
This paper, focusing on the construction in the tunnel section with the worse geological conditions, discusses systematically the theory and the actual application on natm, and puts forward the proposal that the natural states of surrounding rock must be disturbed as small as possible and the self - loading of rock should be made full use of. as emphasizing the main point of the method the study of doing extensively the work of the measurements and the relevent analysis in the site takes up the much space in the paper
本文針對不良地質地段的隧洞施工，系統論述了新奧法的理論和在工程實踐中的應用，提出了應盡可能少地擾動圍巖的自然狀況並充分利用圍巖自身承載力；重點是要在現場廣泛開展監測工作和相應的資料分析；然後根據現場的監測信息以及對圍巖的觀察和認識，對設計進行及時反饋，及時優化支護和施工參數用於和指導現場施工。 -
Emerging from the narrow tunnel, visitors are plunged in an instant into a forest of towering trees as high as 18 metres, with many specimens of birds, reptiles and mammals. the sound track of birds chirping and twittering, and animals roaring and grunting creates the reality of nature. this ecosystem in microcosm introduces hong kong s flora and fauna of 6, 000 years ago and their relationships with the natural environment
從狹窄的時光隧道出來，觀眾眼前一亮，映入眼簾的是一個高逾18米的樹林，裏面放置了多種鳥類、爬行類及哺乳類動物標本，配以雀鳥的啼聲和動物的吼叫聲，使人彷佛置身於大自然中，這個生態系統的縮影介紹香港六千年前的動植物及各種動物與周邊自然環境的相互關系。
分享友人