有序波前重建法在铁路勘察中的应用研究

研究目的:采用常规手段勘察困难或效果不佳的、埋深较大(15~100 m)的各类采空区和岩层,构造组合复杂的不良地质的勘察问题。研究方法:结合铁路工程中的煤窑采空区、断层破碎带勘察和隧道围岩完整性评价等方面的工程勘察,采用有序波前重建法进行井中地震CT计算,分析评价有序波前重建法的使用效果。研究结果:应用取得了较好的勘察效果,煤窑采空区、断层和公路隧道等勘察目的体在CT图像上均有明显的反映。研究结论:采用有序波前重建法进行井中地震CT计算,可以解决采用常规手段勘察困难或效果不佳的、埋深较大(15~100 m)的各类采空区和岩层,构造组合复杂的不良地质的勘察问题。

Application Research on Ordinal Wavefront Reconstruction Method in Railway Survey

Research purposes: To solve the prospecting problems in the various goafs with buried depth(15~100 m),where the survey is difficult to use general methods and its effect is also not good and in the unfavorable geology area with complicated rock stratum and texture combination.Research methods:Combining with the engineering survey in the coal goaf and fault crush zone survey in the railway(engineering) and the evaluation of tunnel surrounding rock integrity,this paper carries out the seismic CT computation in the well adopting the ordinal wavefront reconstruction method,and analyzes and evaluates the application effect of the(ordinal) wavefront reconstruction method.Research results:The application of ordinal wavefront reconstruction method obtains good survey effect.And the CT(images) of survey target bodies in the coal goaf,fault and highway tunnel,etc are very clear.Research conclusions:The seismic CT computation in the well with ordinal wavefront reconstruction method can solve the survey problems in the various goafs with buried depth(15~100 m),where the survey is difficult to use the general methods and its effect is also not good and in the unfavorable geology area with complicated rock stratum and texture combination.