【摘要】 以ASU House为场地案例进行三维数值模拟，使用达西定律与多孔介质中稀物质传递定律，模拟土壤气速度场与进入建筑物的三氯乙烯通量，从而获得负压条件下地层中气态三氯乙烯的时空分布规律。结果显示，与基线状态相比，负压条件下土壤气中的三氯乙烯浓度上升，蒸气入侵效应显著增强；距负压中心与地下污染源的距离越近，三氯乙烯浓度越高。更多还原

【Abstract】 A three-dimensional numerical simulation was conducted using ASU House as the site case, and the Darcy’s law and the law of dilute matter transfer in porous media were used to simulate the soil gas velocity field and the flux of VOCs into the building,so as to obtain the spatial and temporal distribution law of VOCs in the stratum under negative pressure conditions. The results showed that the pollutant concentration increases significantly under the negative pressure condition and the vapor intrusion process was enhanced compared with the baseline condition. The closer the distance from the negative pressure center to the pollution source,the higher the pollutant concentration was.更多还原