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利用钻孔电视成像技术,在对钻孔裂隙统计的基础上,建立裂隙介质模型,根据渗透张量理论计算得出垂向上渗透性的变化规律。阐述了利用该技术表征渗透张量时的影响因素,分析了各统计参数的误差及其对渗透张量的大小的影响,并给出了减小误差的方法。通过黄岛地下水封洞库工程实例具体分析了这种方法的优点,说明利用电视钻孔成像结果来研究渗透张量具有可行性。
Based on the borehole fracture statistics, a fracture media model was established based on the borehole TV imaging technique. The variation of vertical permeability was calculated based on the permeability tensor theory. The influencing factors of using the technique to characterize the infiltration tensor are expounded. The errors of the statistical parameters and their effects on the infiltration tensor are analyzed. The methods to reduce the errors are also given. The advantages of this method are analyzed concretely through the Huangdao underground water sealing cavern project, which shows that it is feasible to study the infiltration tensor by using the television borehole imaging results.