地震波

The frequency component and amplitude of earthquake will affect the seismic response under uniform and travelling wave input.

地震波的频率成分，幅值大小等都将影响分缝拱坝在常规输入和行波输入下的地震反应。

Simulation and analysis of the seismic wave travelling in the mine tunnel and comparison of the seismic converted waves with different models show that the method is of the features of easy realization, high accuracy and high stability.

通过不同的模型，模拟和研究井下地震波的传播情况，并对转换波的情况进行了对比。结果表明，该方法具有实现简单，精度高，稳定性好的特点。

An artificial earthquake record with the Kanai-Tajimi model and trigonometric series superprosition method is generated.

基于Kanai-Tajimi模型和三角级数迭加法人工模拟了地震波，在人工模拟地震作用下分析了地铁车站抗震性能。

Considering the difference of earthquake intensities in both sides of the fault zone, artificial earthquake waves were simulated by trigonometric series method with different seismic peak accelerations. Then the seismic failure numerical analysis was carried out, the weak areas of seismic failure and their reasons were discussed particularly.

考虑到断裂带两侧地震强度的区别，采用三角级数法模拟人工地震波时选用不同的地震峰值加速度，然后对其进行地震破坏数值分析，重点讨论了桥梁地震破坏的薄弱部位及其破坏原因。

It is draw a conclusion that the general stress-characteristic of Cable-stayed and truss bridge.

选取合适地震波，分析结构在地震作用下的时程位移反应及时程内力结果，并总结出此类桥型在地震作用下的受力性能。

In order to clearly recognize the geophysical response of carbonate reservoir,based on preliminary recognition of Ordovician carbonate reservoir under the basal surface in Tahe oilfield,some regular vug models and random arranged vug models were designed and built. The variable-grid finite difference method was used to simulate the seismic wave propagation in these models. Then,the seismic records of the models were analyzed and the effect to seismic reflections caused by vug is studied. The impact rule of regular vug scale and random arranged vug density on seismic attributes was obtained.

为了研究碳酸盐岩储层的地球物理响应特征，在对塔河油田奥陶系风化面下碳酸盐岩储层初步认识的基础上，利用随机介质建模技术，设计并建立了一系列碳酸盐岩储层规则孔洞和随机孔洞模型，并应用变网格有限差分法对地震波在孔洞模型中的传播进行了正演计算，对模拟得到的地震属性进行了分析，研究了孔洞对地震反射特征的影响，获得了规则孔洞尺度以及随机排列孔洞密度对地震属性的影响规律。

For single vug,when the lateral scale of vug is smaller than Fresnel radius,and the vertical scale is smaller than tuning thickness,the reflection amplitude of vug is proportional to its scale. For carbonate reservoir with random arranged vug,seismic wave amplitude is proportional to vug density.Key words random medium;forward modeling;carbonate;vug

对于单个的溶洞而言，当溶洞横向尺度小于菲涅尔带半径，纵向尺度小于调谐厚度时，溶洞反射振幅与溶洞尺度成正比例关系；对于随机分布孔洞的碳酸盐岩储层而言，地震波能量与孔洞密度成正比例关系。

To obtain a more reliable Q image, a waveform inversion method was developed for estimating Q from the walkaway VSP and surface seismic data.

为了获得更可靠的地震波衰减图像，研究采用了一种基于Walkaway井地联合地震资料的波形反演来求取Q值的方法。

According to seismic wave dynamic mechanics,the reasonable nonlinear mapping relationship between seismic records and log data was established.

摘要根据地震波动力学，建立了地震记录和测井数据间的合理的非线性映射关系，通过获取地震记录的自回归系数、分形维数、最大Lyapunov指数和突变参数，得到了声波时差和地层密度测井曲线，建立了地层弹性参数、强度参数的获取方法。

The viscoelasticity can cause energyattenuation, frequency dispersion, phase distortion of the seismic wave, and sometimes lead the seismic processing and interpretation based on the elastic wave theoryinto a risky trap.

粘弹性介质造成地震波能量衰减、频率发散、相位畸变，并使得一些基于弹性波理论的地震处理和解释技术面临踏进"陷阱"的危险。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。