查询词典 wind tunnel

I remembered, from Fe Gang to Ying De, I needed to ride through several tunnels by bike, one of them was 450 meters in length, it was narrow and there was no any lighting in it, only the little bite sunshine from out of tunnel, I was afraid of vehicles, their noises were earsplitting, I was worried about I was bumped, I was worried about if there were some holes in dark tunnel, I was afraid of dropping down into them. I was full of dread and helplessness I never had, in front of me, only a little bit faint sunshine.

我还记得从佛冈到英德，我要穿过几个隧道，有一个450米长的，我走进去非常害怕，周围黑得什么也看不见，我第一次感受大什么叫伸手不见五指，里面又窄又没有灯，只有洞口那一点点光明，我很怕有车进来，那声音震耳欲聋，我担心它撞到我，我有怕里面有个洞我掉下去，心里被一种从来没有的恐惧和无助笼罩着，我眼前只有一点光明。

The relation of deformation of tunnel structure with the load was clearly linear elastic,so the effective rigidity of shield tunnel was constant in elastic stage,which was agreeable to the rule of the modified conventional d...

对上海地铁盾构隧道的研究表明，通缝拼装时刚度有效率为0.67，错缝拼装时刚度有效率为0.75，软弱土体抗力对隧道有效刚度的影响可以忽略。

This text sets out from the actual,providing a kind of emulation project to the tunnel mode,providing some technique investigate for the coming network transfer period adoption tunnel mode.

本文从实际情况出发，对隧道模式提供一种可行的模拟方案，为即将到来的网络过渡[1]时期采用隧道模式提供一定的技术探索。

Based on the item of national high technology development project, the thesis studies the reasonable construction pattern of the tunnel portal, incidence of the micro-pressure wave and the the effect of bell-mouthed hood, lacunaris hood and expansile hood on alleviating the micro-pressure wave in the situations of single line and double line, obtains the relationship between the max micro-pressure wave and the velocity of the train as well as the relationship between the max micro-pressure wave and distance of measuring point at the velocity of 100km/h-550km/h, compares the different alleviative effect of the three different hood to max micro-pressure wave and finally proposes the reasonable construction pattern of the tunnel portal.

本文针对国家高技术研究发展计划(863计划)课题"磁浮交通沪杭线越黄浦江隧道的工程技术问题研究"，在单洞单线和单洞双线两种工况下，对隧道洞口的合理结构形式和影响范围，以及洞口喇叭形入口缓冲段、多孔壁入口缓冲段以及隧道出口膨胀室对减缓微压波的作用进行了研究，得到了磁浮列车速度在100km/h～550km/h时隧道出口微压波最大值与速度的关系以及微压波最大值与测点距离的关系，比较了三种不同形式缓冲结构对微压波最大值的减缓效果，提出了隧道洞口的合理结构形式。

It is good method to solve highway tunnel leakage that protecting waterproof board not breakage, tunnel construction joint at top of middle blocking walls disposing with felicitousness and the good construction quality.

保证防水板在施工期间不破坏、隧道中隔墙顶部的施工缝处理恰当和施工质量良好才能比较有效的解决公路隧道渗漏水问题。

The Kunlunshan Tunnel and Fenghuoshan Tunnel in the Gela Section of the Qinghai-Tibet Railway lie in the permafrost area of the Qinghai-Tibet plateau at an elevation of more than 4500m. Up to now they remain the highest tunnels built in such surrounding rock and special climate in the plateau permafrost area in the world.

青藏铁路格尔木至拉萨段昆仑山隧道和风火山隧道位于青藏高原海拔4500m以上的多年冻土区，是目前世界上在高原多年冻土区这一特殊气候及围岩条件下修建的最高海拔的隧道工程。

Based on the sectional shield tunnels of metro in China, mechanical behavior of segment structure of shield tunnel under the different erection methods has been studied with geometric proportion of 1:12 through the simulated model tests of 3D 'ground-shield tunnel' in which joint effects of segments and mutual action effects between segments and ground are considered.

以我国城市地铁区间盾构隧道为对象，采用几何比 1/12、同时考虑盾构隧道管片接头效应和管片与土体相互作用效应，用三维土-盾构隧道相似模型试验对盾构隧道管片结构在不同拼装方式下的力学行为进行了研究，并将研究结果与梁-弹簧模型的理论分析结果进行了比较，得出的结论可为盾构隧道的设计提供参考。

The stability of the rock in tunnel and gushing water is the important research content in the tunnel engineering.

隧道围岩稳定性和涌水问题一直是隧道工程的一个重要研究内容。

The relationship between the coal cave and the tunnel has been analyzed, and 4 # transmitting water cave has been selected as an example to set up a numerical model. The coal caves in the surrounding rock scope of the tunnel have been treated in two schemes, which were the method of fully treated, and half-length treated.

分析了煤洞与隧洞的空间关系，以4#引水洞为例建立了数值模拟模型，对其围岩范围内的煤洞进行两种处理方案效果比较，全部处理和处理一半长度，得出在30m之内煤洞必须全部处理的结论。

The key structures of underground powerhouse of Baise multipurpose dam project is accommodated in the diabase stratum, of which most sections of the headrace tunnel, delivery tunnel and other caverns most are accommodated in unfavorable stratum composed of mudstone, silicalite and carbonaceous silicalite.

百色水利枢纽工程地下厂房主体布置在辉绿岩地层当中，其中的引水系统、交通洞等洞室大部分洞段布置在由泥岩、硅质岩和含碳硅质岩等组成的不良地层下。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。