煤层中瑞利型槽波的频散特性  

ANALYSIS OF RAYLEIGH CHANNEL WAVE DISPERSION IN COAL SEAM

作　　者：杨小慧[1] 李德春[1] 于鹏飞[1] 

机构地区：[1]中国矿业大学资源学院,江苏徐州221116

出　　处：《物探与化探》2010年第6期750-752,共3页Geophysical and Geochemical Exploration

基　　金：国家自然科学基金项目(49404053)资助

摘　　要：频散是槽波的最大的特征,基于此推导三层对称模型的瑞利型槽波的频散特征方程并绘制出频散曲线,对频散曲线进行研究,讨论地层参数与埃里相频率的关系(影响频散的因素)。通过研究表明,利用已知频散曲线可以进行地层厚度、速度等参数的反演和估算。Dispersion is the most remarkable feature of the channel wave.In view of this,this paper has deduced the dispersion function of the symmetrical three-layer model and drawn the dispersion curves.The characteristics of the dispersion curves are analyzed through theoretical calculation.The relationship between parameters of strata and characteristics of Rayleigh channel wave dispersion is also studied.It is indicated that the dispersion curve can be used to estimate the width or the velocity of the strata.

关 键 词：瑞利型槽波 频散曲线 埃里相频率 煤层 

分 类 号：P631.4[天文地球—地质矿产勘探]