摘要
在铁路主要干线大提速的背景下,路基病害的探测、定位及整治已成为一项重要而紧迫的课题。采用CT速度成像技术,重建路基下介质结构图像,可以准确提供岩溶、洞穴、软弱土层等路基病害存在部位的定位依据。这里简要介绍了声波CT的基本原理、反演重构技术和声波勘探的CT工作流程,并通过工程实例给出路基病害CT探测的实施过程和分析结论。工程实践表明,CT技术在铁路路基病害勘探中具有良好的应用效果。
The survey and disposal of rail-bed disasters become very important and urgent problems for high speed train.Reconstructing the image of subterranean substance by sonic tomography can precisely locate the Karst erosion,grotto, oozy earth,and other rail-bed disasters.In this paper,principles,methods and working flow of sonic tomography image inversion and reconstruction are introduced briefly.With an example of engineering case,it's application process,correlative analysis and conclusion are discussed in detail and results verify that the CT technique is feasible and can be applied widely to the survey of rail-bed disasters.
出处
《物探化探计算技术》
CAS
CSCD
2006年第2期137-141,共5页
Computing Techniques For Geophysical and Geochemical Exploration
关键词
层析成像(CT)
路基病害
声波勘探
computerized tomography(CT)
roadbed disasters
sonic exploring technique
