Nevertheness, the pseudo-spectral method has a high computation speed and computational efficiency and can reflect the propagation rules of the wave field in medium visually and effectively. As a result, the pseudo-spectral method is still an effective method to model the heterogeneous seismic wave field.
尽管如此，伪谱法计算速度快，计算效率高，能够直观、高效地反映介质中波场的传播规律，因而仍不失为一种很好的地震波模拟方法。
The maximum double amplitude of the seismic wave, 185 mm, with 2-hours duration, was observed at the Urumqi Well...
另外 ，对比了新疆及邻区 7级以上地震北天山地下水的震后效应，讨论了地下水远程效应与井震距离的关系以及阶跃异常的幅度等问题
With the monitoring and analysis of the ground vibration caused by Qingdao underground engineering blasting, the research lays emphasis upon the effect of slant-wise fault on wave propagation, and validates the effect of slant-wise bedrock fault on the frequency of earthquake ground motion found in an ultrasonic seismic modeling experiment by author, which says that high frequency components always strengthen on the hanging wall block of the fault, whereas low frequency components are predominant on the footwall block no matter where the source is located.
结合青岛地铁工程地下爆破振动效应的监测分析，重点研究了倾斜断层对地震波传播的影响，验证了本人在超声地震模拟中发现的倾斜基岩断裂对地震地面运动频率成分影响的规律，即无论震源位于断层的哪一侧，在断层上盘，爆破振动低频成分相对较强，在断层下盘高频成分相对较强。
However, the forward modelling technique can be used to simulate the characteristics of seismic wave propagating through this kind of reservoirs and provide a theoretical principle for fractured-vuggy reservoir prediction.
塔河油田奥陶系碳酸盐岩非均质缝洞储层的地震响应特征复杂，而利用正演模拟技术模拟这种介质中传播的地震波的特征能为孔缝洞储层的预测提供理论依据。
Based on 2D-coherence model, assumed static nonlinear balance to be as initial state of bridge structure seismic response analysis, after studying on PSD function model of artificial seismic wave and incoherence function model, considering effect of vertical seismic wave promulgating direction to other supported points, selecting Haos 2D-coherence model, applying of triangular series method and MATLAB the thesis achieves artificial seismic wave program and produces six points artificial seismic acceleration waves of the actual bridge.
基于二维相干模型，假定静力非线性平衡状态为桥梁结构地震响应分析的初始状态，详细研究人工地震波功率谱模型和部分相干函数模型后，选择Hao二维相干函数模型，考虑垂直地震波传播方向各支点影响，编制出可综合考虑频率对视波速影响以及不同支点间非平稳调制函数差异等因素的人工地震波生成程序，并合成实桥的六个支点的地震加速度时程。
The method and process of definition of seismic wave of structural design for Laiyuan Square are introduced.
介绍了徕远广场结构设计地震波的确定方法及过程。
Thus, it is a key point for shaking table experiment that whether the wave of shaking table can recur requested seismic wave or not.
因此，振动台台面的运动能否准确的再现要求的地震波形是模拟振动台试验的一个关键的问题。
Beginning with classification of multiple reflections and introduction of the elimination methods, principle of SRME based on the plane-wave propagation model for a horizontally layered earth was discussed, and then the iterative procedure of the prediction and subtraction of the surface related multiples in real seismic data was described.
在介绍多次波类型和常见压制方法的基础上，引出SRME方法。
The results of 3-D nonlinear seismic analysis show that, to arbitrary velocity and input direction of the design travelling wave, the aseismic safety of the joint structure in the top of diaphragm walls is reliable; all of the core and the diaphragm walls wouldn't occur tension rupture or crack; the sand lens in the overburden wouldn't occur liquefaction; the dam wouldn't occur sliding.
三维非线性动力分析表明，在设计地震作用下，无论各种波速及各种入射方向，防渗墙顶连接部位的抗震安全性较高；坝体心墙及防渗墙不会产生拉伸破坏或裂缝；覆盖层砂层透镜体不会液化；坝体不会出现滑移破坏。
The effect of travelling wave on the planar seismic responses of the long-span arch bridge is considered.
对江界河桥分析了行波效应对面内水平地震反应的影响并进行了横桥向地震反应分析。
This conversion is based on the analytic expression of sonic and elastic wave equation, and use the different wave field extrapolation, which is initially used in seismic migration and forward modeling.
这种转换是在声波与弹性波方程解析表达式的基础上，通过原本应用于波动方程偏移与正演模拟波场延拓的方法来实现。
Continuous rigid-framed bridge; earthquake input pattern; traveling wave effect; seismic response analysis
连续刚构桥；地震输入；行波效应；地震反应分析
The seismic response calculation for a four span continuous rigid-framed bridge under seismic traveling-wave inputs is performed.
给出了地震行波输入下大跨度桥梁的主动、半主动和被动控制分析方法，并对1座4跨连续刚构桥梁进行了行波输入下地震反应计算，分析了8种振动控制情况下纵桥向和横桥向地震反应的减震效果。
To measure artificial seismic wave with high accuracy in remote distance, the theory and methods of coherence of light resource, stability of system, intensity and signal to noise ratio of laser Doppler signal, and sensitivity and accuracy of displacement measurement are investigated.
为解决远距离处人工地震波的检测问题，研究了光源的相干性，系统的稳定性，激光多普勒信号强度、信噪比，位移测量灵敏度和精度等理论及方法。
After normal moveout correction, the seismic reflection wave s of adjacent traces in one CDP trace gather which was formed according to ray principle have similar waveforms and nearly equal arrival times.
基于射线原理的CDP道集，经过前校正以后，相邻道的地震反射波具有波形相似、时间近似相等的特性，如果不具有这种特性，则认为是干扰波或受到了干扰的反射波。
This is because the seismic waves from ground to ground, the first wave arrived because.
这是因为地震波从地下向地面传来，纵波首先到达的缘故。
Aiming at the problem, we carried out study. The results show that when zero offset VSP data existing strong interbed multiple and borehole coupling resonance has large impact on down-going wave deconvolution, and the VSP imaging data has misclosure with surface seismic data.
实际零井源距VSP数据的研究发现，当零井源距VSP采集数据中存在较强的层间多次波和井壁耦合谐振时，经下行波反褶积处理后的VSP成像数据与地面地震数据之间出现了闭合问题。
Deconvolution is one of the most important technologies for improving seismic data resolution. Down-going wave deconvolution of zero-offset VSP based on is regarded as one of the ideal seismic deconvolution methods. However, when strong disturbance exists, zero-offset VSP data processed by down-going wave deconvolution has large misclosure with surface seismic data, which seriously impacts the effective application of zero offset VSP data in calibration and geological interpretation.
反褶积是地震数据提高分辨率处理的重要技术之一，零井源距VSP下行波反褶积被认为是较为理想的地震反褶积方法之一，但在存在较强干扰时，经过零井源距VSP下行波反褶积处理的数据与地面地震数据会经常出现较大的闭合差，以至于严重影响到零井源距VSP数据在地震层位标定和地质解释中的有效应用。
The stress wave theory and wave function expansion method are used to analyze the interaction mechanisms of blasting seismic wave and the grouted rockbolts and deduce the analytical solution of stress and displacement of rockbolt, grout and rock mass body. Based on the stress and velocity calculated, the safe PPV for grouted rockbolt is decided.
利用波函数展开法，研究了爆破地震波与砂浆锚杆相互作用的机理，推导了爆破地震波作用下锚杆、砂浆以及围岩内的应力和位移表达式，根据砂浆边界上的应力和振速分布，确定了不同爆破地震频率下砂浆的安全振速范围。
The influence of free surface on tunnels is discussed. The influence of blasting vibration on fresh concrete lining is studied. The finite element method is employed to analyze the spatial distribution of temperature and thermal stress of fresh concrete lining, the wave function expansion method is used to study the interaction of blasting seismic wave and the circular tunnel with lining, thenthe safe PPV of fresh concrete lining with different age is decided by taking into account the thermal stress of concrete lining. Using the conformal mapping method, the influence of blasting vibration on the arch tunnel with lining is studied and the safe PPV of concrete lining is deduced under different incident angle.
研究了爆破振动对新浇混凝土衬砌的影响，采用有限元法求出了圆形洞室新浇混凝土衬砌内温度和温度应力在空间上的分布及其随时间的变化，采用波函数展开法求解了爆破地震波与有衬砌圆形洞室的相互作用，获得了考虑新浇混凝土衬砌内温度应力前提下不同龄期的新浇混凝土衬砌的安全振速；利用保角变换研究了爆破振动对直墙拱形有衬砌隧洞的影响，得到了爆破地震波以不同角度入射时混凝土衬砌的安全振速。