The Research On Synthetic Measure For Road Engineering Geological Exploration

In this paper, the writer holds the development trend of geophysical exploration home and abroad. Surface wave, refractive wave method can often is used in construction quality evaluation of weak stratum and soil rock interface determination in highway embankment field. By remedying the disadvantage of current settle method and taking into account the characteristic of highway embankment exploration, genetic algorithm based on inches is proposed to solute the automatic inversion and analysis while excessive data exist. The analysis of locale time and frequency domain is proposed to solute the fast exploration of weak stratum and testing in-situ adjusting .The surface wave testing and refractive wave testing are combined to solute soil rock interface determination. In this way, fast testing, data analysis, determinant method can be achieved in highway engineering geological exploration. This paper includes achievements as following: (1) For surface wave testing method home and abroad, signal analysis, the abstraction of dispersion curves in theory, version and inversion analysis theory are analyzed and compared by the numbers. The effect of related parameter on signal analysis is found. Overtone analysis method, which is advanced international, is investigated, and systemic testing analysis software is compiled. (2) Based on characteristics of related investigation methods, the application of genetic algorithm based on inches to dispersion curves inversion is realized for the first time. The analysis rapidity of surface wave inversion is enhanced, while manual work and rectifying, the assumer of prior model are avoided. Genetic algorithm based on inches is proposed to improve the rationality of inversion analysis result. (3) The finite difference software's Flac3D numerical simulation is used to analyze the time domain waveform and dispersion characteristics in various weak stratum. Based on the transmit law of surface wave in weak stratum, an integrated data analysis method is established. Weak stratum is studied from time domain and dispersion curves aspects; weak stratum determinant criterion is brought forward. (4) In weak stratum, signal behavior and rating are analyzed from time domain, frequency domain and cloud picture while surface wave testing is being carried through. Appearance and determinant criterion in various testing phases of weak stratum are proposed, which provide abundant evidences for weak stratum determinant. Parameters and steps of weak stratum testing are embodied, which establish stable foundation for testing in-situ and weak stratum's precision determinant. (5) Elastic wave's transmit law in soil rock stratum is investigated and postulate of soil rock interface determination when surface wave and refractive wave transit. Because each has advantages and disadvantages, both advantages are imposed in oil rock interface determination. This measure has superiority in abundance locale engineering and avoids both disadvantages. (6) A great deal of testing in-situ results are analyzed and critical technology in soil rock interface determination is proposed, so soil rock interface determination determinant criterion could be established. (7) The provided testing measure is applied in a mass of engineering testing. The results indicate that the measure can achieve engineering setting's basic require and the determination criterion is available.