direction of tunnel 中文意思是什麼
direction of tunnel
解釋
隧道向-
Second, according to field investigation and wind - tunnel experiment, some scholar s advanced that barchan dunes often appear in dynamic equilibrium shapes when th ey move along the direction perpendi cular to the dune ridge under the influence of unimodle sand - moving wind
風成沙的紅化和圓度特徵不宜作為判別其氣候意義的診斷性標志，應當結合動植物化石及石英砂顯微結構等線索來確定。 -
When handling the eventuality of a train on fire and stalled in a tunnel, the mass transit railway in hongkong originally adopted a conventional singal - end detrainment approach to ensure passengers detain in the unpward direction
摘要在撤離被困在地鐵隧道中著火列車乘客時，香港地鐵公司原來採用傳統從上風口單方向撤離的辦法。 -
Obtain these chief research achievements. ( 1 ) the method of hydraulic fracturing, kaiser effect experiment and the finite element numerical simulation computation results, the direction of maximum horizontal principal stress intersect the small - angle of tunnel axial line, it is favorable to the stability of tunnel peripheral rock ; according to the test rust of field stress - relief method, at the present time, zhe gu mount tunnel have n ' t access to high crustal stress site, maximum principal stress magnitude is 17mpa ~ 20mpa
主要獲得以下研究成果： （ 1 ）綜合水壓致裂法、室內巖石kaiser效應試驗和有限元數值模擬計算研究成果，最大水平主應力方向與隧道洞軸線小角度相交，對隧道圍巖穩定性有利；根據現場應力解除法測試結果，目前鷓鴣山隧道尚未進入高地應力段，最大主應力量級為17mpa 20mpa 。 -
With the increase of lateral pressure modulus, the magnitude of principal stress decreases and the direction of it is hardly changeable ; with the increase of the angle between the direction of the maximal horizontal principal stress on magnitude and the fault bearing, the magnitude of principal stress increase and its direction can hardly change ; with the increase of the elastic modulus of rocks, the magnitude of principal stress increases and the direction changes more ; with the increase of pr, the magnitude of principal stress decreases and the direction changes more ; with the increase of lateral pressure modulus, the principal stress at hance, the tress at topmost arch, bottom arch and principal stress at lateral arch decreases, with the increase of the depth of tunnel, the stress of surrounding rock also increases, and the poorer the quality of surrounding rock is, the little its principle stress is
分析得出，隨著側壓力系數的增大，主應力量值減小，主應力方位難改變；隨著與斷層走向的夾角增大，主應力量值增大，應力方向難改變：隨著巖石的彈性模量的增大，主應力量值增大，方向變化越大；隨著泊松比的增大，主應力量值減小，方位變化越大。隨著側壓力系數的增大，頂、底拱處的各應力值增大，拱腰處的主應力減小，剪應力增大，側拱處的各主應力減小，同一側壓力系數的條件下圍巖質量越差，各應力值也越小；隨著洞室埋深的增加，圍巖壓力也增大，圍巖質量越差，其應力值也減小。 -
Based on the date of full - scale measurements, modeling wind tunnel tests and theoretical researches of the wind loads on low - rise buildings available, involved the date of the wind tunnel test and computational numerical simulation fulfilled in this paper, the effects of wind loads on low - rise buildings have been studied systematicaly and extensively. it reveled properly the principle of the changes of the surface mean pressures, local pressures, and fluctuating pressures with the building geometry, roof type and slope, wind direction, eave configuration, cladding system, and dominate openings
本文根據國內外有關低層房屋風荷載的全尺寸實測、模型風洞試驗及其理論方面的研究，包括本文進行的低層房屋屋面風壓分佈的風洞模型試驗和計算機數值模擬計算，對低層房屋的風荷載特性進行了系統而深入的研究，較好地揭示了低層房屋表面的平均風壓、局部風壓和壓力的波動隨房屋的幾何尺寸、屋面形式、屋面坡度、風向角、檐口構造、覆面材料和門窗開洞而變化的特點和規律。 -
The spectra of three dimensional wind loads on the model of wuhan international stock building is investigated in a boundary layer wind tunnel when the wind direction varies from 180 to 270
摘要通過風洞試驗，對武漢國際證券大廈模型180 270風向角范圍內的三維風荷載譜進行了分析。 -
Emergency telephones may be found at the roadside of some expressways follow the direction indicated by the chainage marker and in tunnel areas these telephones are connected directly to police or tunnel control centres
在一些快速公路上根據里程標志指示方向，以及在隧道區域內，會設有緊急電話，直接駁通警署或控制中心。 -
Drive from guangzhou and go through zhujiang tunnel and hedong bridge to foshan, then go across lanshi bridge and drive in the direction to zhanjiang for 500m and you will get to sunlink north section furniture city of lecong
廣州城區亦可經珠江隧道、鶴洞大橋到佛山，過瀾石大橋往湛江方向直行500米即到樂從順聯北區家私城。 -
1. under the same kind of wall rock and the same condition, displacement of pipe liner is symmetry, for tunnel structure and suffered load are symmetry. as level terra stress is bigger, the maximum of displacement and the first main stress occur in tie - in of pipe liner structure, and its direction is radial and points in hole ; the direction of the third main stress is annular and its maximum occurs in top and bottom hole inner
1 、同一類圍巖在同一種工況下，由於結構和荷載的對稱性，管片襯砌結構的位移也表現出對稱性，因水平向地應力較大，位移最大值、第一主應力的最大值發生在管片襯砌結構的接頭處，方向為徑向指向洞內；第三主應力的方向為環向，較大值發生在洞頂和洞底內側。 -
Abstract : wind tunnel experiments were carried out to investigate the influence of wind direction on the wind pressure of proximite buildings. mean and fluctuating pressure coefficients on a high building, at sixteen different wind incidences and with one and two interfering buildings, were measured in the tests. this paper presents the characteristics of wind pressure on the building, which varies with the incident wind angle and with the numbers of adjacent buildins. due to the variation of wind angle and the interference effects, the complex feature of pressure distributions can be found on the downstream building surfaces for building group arrangement at certain angle of wind attack. some area of the interfered building for such configuration, in comparison with one single building ' s, may undergo very strong positive or negative pressures
文摘:通過風洞實驗研究了風向對兩個和三個鄰近建築風壓分佈的影響特性.實驗結果給出了在不同風向角下，作用於受擾建築上的平均和脈動風壓系數.當受擾建築處于下游位置時，建築之間的干擾效應主要表現為遮擋影響，建築物上的總體風壓系數不是很大，但在建築物表面上有時會產生局部較大的負壓系數.另外，在某些風向角下由於受到上游分離氣流的影響，在下游建築的局部表面又會出現較大正壓.這些結果可供建築布置和結構設計時參考 -
The longitudinal stresses in the tunnel structure calculated by using the model of tamura & okamoto are obviously greater than the stresses in transverse direction obtained by using two dimensional finite element analysis. it is proposed that the axial and bending stresses should not be ignored for the underground structural design
計算結果表明，由彈簧質量模型算得的地下結構在地震作用下縱向振動和橫向振動產生的縱向和彎曲正應力及剪應力明顯高於由二維平面有限元算得的橫向平面內產生的正應力和剪應力，由此可見軸向應力和彎曲應力是地下結構抗震設計中不容忽視的因素。 -
The direction guidance system plays an important part in the shield excavation, such as the prevention of snake motion, the reduction of ground settlement of tunnel construction and the insurance of tunnel quality etc. based on the principle of guidance system, a precise direction guidance system with high accuracy, high efficiency and more reliability is developed, it has the advantages of less times of surveying, real time positioning and shield behaviors monitoring
盾構導向系統是盾構掘進時的指揮系統，對指導盾構掘進、隧洞貫通、減少地表沉降以及保證隧洞的質量等具有重要的作用。本文在研究盾構導向工作原理的基礎上開發研製了一套盾構導向系統，精度高、工作可靠，可極大地縮短導向測量的時間和減輕勞動強度，實現了盾構掘進的實時定位和姿態監測。 -
The orderliness of stresses and displacements in the liner along the direction of the tunnel axial are analyzed under various type tunnel liner and multiform properties of surround rock. the effects of shock absorption measure reinforcing surround rock are studied
在不同的圍巖材料、不同的襯砌類型情況下，分析了洞口段隧道襯砌應力和位移沿隧道軸線方向的變化規律以及採取注漿加固圍巖的方法的減震效果。 -
An experimental investigation on the transition in the boundary layer of horizontal plane with and without single two - dimensional roughness elements has been carried out in the wind tunnel. the distribution in normal and stream - wise directions of intensity of t - s wave excited by vibrating beam was measured in every condition. neutral curves were obtained by measuring the growth of the t - s wave at the normal critical location along the stream - wise direction
在風洞中對水平光滑平板以及加有粗糙元平板的邊界層轉捩進行了測量與研究，比較了不同情況下平板邊界層內由振動梁激勵生成的t - s波沿流向和法向強度的分佈規律，得到了相應的振型增長曲線以及中性曲線。 -
Under the direction of elastic - plastic statics theory, transient dynamics theory and structure mechanics theory, the means of numerical analyse is adopted in this thesis to study the security of existing tunnel. the thesis studies the contents as follovvs : ( 1 ) the bias pressure, vvhich is caused by the digging of new tunnel, deflects and deforms the lining of existing tunnel. the effect degree relates to tunnel space, construction method, topography and round rock
本文用數值分析的手段，對既有隧道的安全性進行了彈塑性靜力分析、瞬態動力學分析和結構力學分析，如下： （ 1 ） 、新建隧道的開挖對既有隧道造成偏壓影響，使得既有隧道發生偏轉和變形，從而對隧道襯砌產生不良後果，其影響程度與隧道間距、施工方法、地形和圍巖狀況有關。 -
For shield excavation the scope of reinforcement is determined either in vertical direction along the tunnel or in radial direction at its starting position
摘要盾構始發預加固范圍的確定，一則是沿隧道縱向的加固范圍確定，二則是盾構徑向加固范圍的確定。 -
The key to accomplish this was the tsing ma bridge which leapfrogs the islands of tsing yi and ma wan, linking up with a lesser bridge in one direction and a tunnel beneath a housing estate in the other
本港多個地點均可欣賞到青馬大橋的壯麗景觀，旅客亦可選擇到青嶼干線訪客中心，在觀景臺眺望青馬大橋的景緻。
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