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地震波透射
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  “地震波透射”译为未确定词的双语例句
     A Method of Computing Tomography Using Crooked Seismic Rays
     弯曲射线地震波透射层析成像的一种实现方法
短句来源
     The tomography of rebuilding 2D attenuation character distributing image using seismic wave peak amplitude is discussed. The eliminated method of attenuation variety resulted from seismic wave transmission loss etc. and the effect on rebuilding Q value image from velocity distributing and numeric experiment and engineering practice are studied.
     讨论了利用地震波初至峰值振幅重建二维衰减特性分布图像的层析成像方法,研究了地震波透射损失等引起的振幅变化的消除方法,以及速度分布对Q 值图像重建的影响,并进行了数值模拟实验及工程实践。
短句来源
     In this paper,The shortest path algorithm is improved and the application to seismic rays tracing is introduced,Then a method of computing tomography using crooked seismic rays is emphatically discussed.
     首先讨论如何改进最佳(短)路径算法实现快速射线追踪,然后论述弯曲射线地震波透射层析成像(cT)实现方法.
短句来源
  相似匹配句对
     STUDIES ON SEISMIC WAVES
     地震波研究
短句来源
     A Method of Computing Tomography Using Crooked Seismic Rays
     弯曲射线地震波透射层析成像的一种实现方法
短句来源
     SEISMIC REFLECTION AND TRANSMISSION COEFFICIENTS AT AN AIR-WATER INTERFACE OF SATU-RATED POROUS SOIL
     饱和土介质中地震波在水、气分界面上的反射与透射
短句来源
     ANALYSIS ON FREQUENCY CHARACTERISTICS OF EXPLOSIVE SEISMIC WAVE
     爆炸地震波的频率特性分析
短句来源
     A NOVEL TRANSMISSION IONIZATION CHAMBER WITH CARBON FIBRE ELECTRODES
     新型碳纤维透射电离室
短句来源
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  seismic transmission
A three-dimensional temporary seismic transmission array was arranged in a 50×60 km2 region around Jiashi strong earthquake swarm to receive seismic waves generated by 8 fires from different azimuths.
      
Some results of an investigation of fissured rock by the seismic transmission method
      
Promising methods employed in seismic tomography: teleseismic, transmission, microseismic emission, and vibrational seismic transmission techniques.
      
The WG recommended definitions of Completeness and Latency to facilitate the discussion of seismic transmission standards.
      


In this paper,The shortest path algorithm is improved and the application to seismic rays tracing is introduced,Then a method of computing tomography using crooked seismic rays is emphatically discussed.The accuracy of the method is tested and verified by mathematical models and observed data.

首先讨论如何改进最佳(短)路径算法实现快速射线追踪,然后论述弯曲射线地震波透射层析成像(cT)实现方法.数学模型的正反演计算以及实测资料的具体应用均证实这种方法与直线CT相比具有较高的成像精度和收敛速度,是一种较理想的成像方法.

Based on smooth bending ray pathes and surveyed data of cross entry seismic survery, an image of the velocity filed have been reconstructed by SIRT (Simultaneous Iterative Reconstruction Technique). Many numerical experiments have been adopted to verify the method. The experimental results indicate that the high quality image has been obtained by applying smooth bending ray path and seismic tomography (ST) technique is a useful method to explore structures in coal seam.

本文对煤矿井下巷间地震波透射观测资料在平滑弯曲射线的基础上,利用联合迭代法(SIRT)进行煤体波速场的反演成像,并结合数值计算结果给以验证。其结果表明:采用平滑弯曲射线追踪地震波射线可以大大提高成像质量;地震层析成像技术用于探测煤体中的构造是一种有效且可行的方法.

The propagation law of the blasting seismic waves transmitting through the weakly rotten granite site, where a 26 m in length and 7 m in deep is created by the pre-splitting blasting technique, is studied. The result shows that the damping effect of the pre-split is related with the distance between the pre-split and the point of the seismic wave data collected. By regressing the vibration velocities and the scaled-distance, the formulations show that there exists an effective range that the pre-split weakens...

The propagation law of the blasting seismic waves transmitting through the weakly rotten granite site, where a 26 m in length and 7 m in deep is created by the pre-splitting blasting technique, is studied. The result shows that the damping effect of the pre-split is related with the distance between the pre-split and the point of the seismic wave data collected. By regressing the vibration velocities and the scaled-distance, the formulations show that there exists an effective range that the pre-split weakens the seismic vibration in a large scale. In the range of scaled-distance 0.031~0.051 kg~(1/3)/m, the damping ratio will be in the range of 15%~30%. To the experiment site, the transmission rate of the pre-split to the blasting seismic waves is about 19%~31%. The frequency spectrums show that the pre-split selectively absorbs the blasting seismic signal of the special frequency part. The wave transmitted through the pre-split is mainly composed of two predominating frequency band parts of the signals. With the increase of the distance, the two frequency bands become closer. To some distance, the frequency spectrum of the blasting seismic manifests one frequency band.

研究在微风化花岗岩石场地深孔爆破地震波通过一条长26 m,深7 m的预裂缝振动传播规律。试验数据分析表明,预裂缝的减震效果与测点与预裂缝的减震效果有关。通过对试验中5个测点处不同测点间的振动强度与比例距离的数据回归分析,预裂缝的减震效果具有一个有效作用范围,在比例距离范围为0.031~0.051 kg1/3/m时,减震效果为15%~30%。试验中预裂缝对爆破地震波的透射率为19%~31%。频谱分析表明,预裂缝对爆破地震波的振动频率具有选择吸收的作用,相当于一个滤波器。经预裂缝作用下的爆破地震波在近测点处具有2个明显主振频带;随着传播距离的增加,地震波的两主振频带信号开始混叠,频带逐渐接近并表现为一个主振动频带。

 
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