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| Application Research on Ordinal Wavefront Reconstruction Method in Railway Survey |
| LEI Xu-you1, LI Zheng-wen2 |
| 1.The Second Survey and Design Institute of China Railway, Chengdu, Sichuan 610031, China; 2.Chengdu University of Technology, Chengdu , Sichuan 610091, China |
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Abstract 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.
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Received: 13 October 2006
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2006, Vol. 23 
