Research On Data Processing And Visualization Of The Transient Rayleigh Wave Exploration

In recent years, with the constant increase in China's infrastructure construction projects such as energy, traffic and urban construction, Rayleigh Wave exploration is widely used in engineering geologic exploration and project quality test for its intact, speediness, economization and efficiency. Until now, it's already comparatively mature in Rayleigh Wave theory study, but the Rayleigh Wave data processing techniques always stay in a state of technical obturatation, which has affected the advancement of processing technic. Apart from this, most of the programs that exist are invisible when working, so it causes trouble to improving the program for developers.For the disadvantage in the programs used in projects at present,based on part of the finished blocks, the writter designs the overall framework of the Rayleigh Wave data processing program,re-develops the pretreatment and the subsequent blocks of this program aimed at acquiring the Rayleigh Wave seismic phase data and its visualization when processing.Finally it formed to be a Rayleigh Wave data processing system. It adopts the way of material investigating and researching- theory analysis-original data processing-major programming- applying to actual project, realizing the mouse identification and the restore of the Rayleigh Wave seismic phase data based on VB program. It can also plot the velocity–depth curves and the velocity isoline in bulk by invoking Grapher and Sufer. Finally, the program is used in Nankou Rayleigh Wave test to validate it, obtaining satisfying results. This system raises working efficiency in Rayleigh Wave data processing greatly,offers more convenient data processing system for specified workers as well as foundations for researchers who develop and update the system more intensively. The thesis includes as follows:1. Researching the Rayleigh Wave exploration theory and designing the algorithm according to the main Line of realizing the capacities. For the problems of acquiring the Rayleigh Wave shock Parameter automatically, the author transforms the problem of acquiring the Rayleigh Wave shock Parameter automatically to artificial processing and automatic restoring in bulk through the program.2. Realizing the real-time interface display of the first break time. Data processing workers can judge the effectiveness of the acquired data more intuitively and the ranges of the next first break time according to the appeared data, offering the reference for acquiring the first break time.3. According to the operation method and application ways of Grapher and Sufer, invoking the two programs to the Rayleigh Wave data processing system and plotting the velocity–depth curves,wave curves and the velocity isoline in bulk by invoking Grapher and Sufer, then it ensures the quality and effectiveness of the data processing, also it offers more intuitive judgment basis for users to get conclusions of the site characteristics.4. Composing the Rayleigh Wave data processing program based on VB program. The program realizes the whole process from loading the original acquired data to forming achievement graphs, and the program has been packaged to a set of Rayleigh Wave data processing system.