Development of the method to investigate the source of mineral oil in the unsaturated soil

本文开发了土壤气体中平流-弥散方程的反演分析程序和具有扭曲度和弥散度的分子扩散系数和Knudsen扩散系数的计算方法。通过与装满干土、空气和二氧化碳的容器的实验结果与模拟结果的比较，评价了模拟土壤气体中化学成分迁移的模拟装置。验证了仿真结果与实验结果的一致性。最后，利用土壤中气体成分的研究成果，提出了矿物油来源的研究方法。

This study developed a program for inversion analysis of advection -dispersion equations and the method for obtaining molecular diffusion coefficient and Knudsen diffusion coefficient with tortuosity and dispersivity in soil gas. A simulator for the migration of chemical components in the soil gas was evaluated by comparisons between the experimental results with tank, which was filled with dry soils, air and carbon dioxide, and the results of the simulation. As a result, it was verified that the results of simulation were consistent with the experimental results. Finally this study developed the method for investigating the source of mineral oil by using results of researches of gas components in the gas of soil.