查询词典 wind tunnel

In this paper, according to the trait of displacement monitor of NATM and combined with the develop of modern instrument of measure, two new methods of diplacement monitor of tunnel are put forward:"the system of three dimensional displacement monitor" and "the arbitrary point system of peripheral convergence of tunnel".

本文根据新奥法隧道施工中位移监测的特点，结合现代测量仪器的发展，探索了两种隧道位移监测的新方法：三维位移监测系统和隧道周边收敛的自由测站监测系统。

In the light of all kinds of structural faces and their assembles along tunnel, the place and growth depth of instable cuneiform body in tunnel wall rock could be predicted, then its volume and weight of instable cuneiform body are estimated based on the equator plane projecting method and the solid body ratio geometry method, which offers reliable geologic data for designing corresponding supporting measure.

摘要利用赤平投影法和实体比例几何法分析隧洞围岩稳定性，根据隧洞沿线所遇结构面相互组合形式，预测隧洞围岩不稳定楔形体的位置及其发育深度，从而估算不稳定楔形岩块的体积和重量，为设计相应的支护措施提供可靠的地质依据。

Based upon monitoring results of radioactive materials in tunnel excavation construction in Qinling Tunnel the intensity of radioactivity and distribution regularities is summarized, meanwhile, preliminary assessment and research are conducted for radiation hazard and protection.

结合西康线秦岭特长隧道Ⅱ线平导开挖过程中对隧道放射性物质监测结果，针对隧道内放射性强度、分布规律进行了归纳、总结，并就其辐射危害及防护进行了初步评价和研究。

We investigate this data and derive the following rules to process tunnel refection seismic data: Based on their different particle trajectories and propagation speeds and shear waves need to be separated from tunnel waves, air waves, and background noise.

通过研究这些数据，得出如下一些处理隧道反射地震数据的规则：根据不同的质点运动轨迹和传播速度把压缩波和剪切波与隧道波、空气波和背景噪音分离开来。

Finally we set up three - dimensional space model to simulate the space effect during tunnel construction , analyze the transaction between the left runnel and the right tunnel , and also analyze the deformation and stability of mid - partition

最后建立了三维空间模型，对连拱隧道开挖时的空间效应、左右洞的相互影响，以及中隔墙的变形和稳定性进行了模拟分析。

Considering study of soil displacements law is precondition to study responses of pile foundation, soil displacements law around shield tunnel during tunnel construction have been studyed in chapter 3 of this thesis.

考虑研究盾构掘进过程中土体位移变化规律是研究基桩反应的前提，论文第3章结合南京地铁工程实例，研究了盾构施工中周围土体的位移规律。

The tunnel opening is too tight,so we had to sidle through the tunnel opening.

洞口太窄了，我们只能侧着身子走进去。

On the basis of the present construction situation of Sinitic mountain tunnel method, the new concepts of ahead displacement, releasing displacement in excavating, early displacement and the later displacement, which are the new division from the tunnel excavation displacement three-dimensional effect, have been proposed.

结合山岭隧道新奥法施工现状，首次提出了隧道位移空间效应的"先期位移"、"开挖瞬时释放位移"、"前期位移"和"后期位移"的新概念。

The fundamental of tailrace tunnel with sloping ceiling is expounded and the design procedure for the configurations suggested.The applicable range and several problems of this kind of tunnel are investigated.

在阐明水电站变顶高尾水洞工作原理的基础上，从工程实际出发，提出了体型设计的基本思路和具体步骤，并着重探讨了这种新型尾水道的适用范围和设计与研究中应重视的问题。

By getting over the state of the art about the technique of the tailrace tunnel with sloping ceiling, the research contents and study ways and means are put forward, and the importance to research is explained.Chapter 2 introduces the working principle of the tailrace tunnel with sloping ceiling. And the design of body type, appliance condition and the numerical model for transient process are illuminated.

第二章：主要论述了变顶高尾水洞的工作原理、体型设计和适用条件以及过渡过程计算的数值计算模型，重点在于数学模型的建立与分析，明满流交替现象中选择了合理的计算模型和计算方法；第三章：着重介绍了向家坝变顶高尾水洞方案模型试验的研究内容和主要结果。

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。