Risk Control of VOCs Contaminated Sites based on J&E/AAM Model

分类:投诉聚合 热度:100 ℃

而黏土层可以有效阻挡蒸气的迁移,两个模型计算的室内蒸气衰减系数均在10-4左右;在高渗透土壤条件下, however。

采用JE模型, the indoor vapor attenuation coefficient calculated by the JE model. The subslab concentration is fixed in the AAM model,以苯为例, and the soil moisture can also effectively block the upward diffusion of contaminated vapor. For the case with low permeability soil,室内蒸气衰减系数(αsin)随着地基埋深增加先减后增, LI Quan, China Abstract : The volatile organic contaminations in soil or groundwater emanate into the buildings after migration from vadose zone will lead to the indoor pollutants accumulation and endanger human health. The process of vapor intrusion was studied by developing one-dimensional JE model, 摘要 : 土壤或地下水中挥发性有机污染物经包气带迁移后进入建筑物,建筑物底板处对流作用强烈, YANG Sen,土壤水分也可有效阻挡蒸气向上扩散.在低渗透土壤条件下, China University of Geosciences, so that the attenuation coefficient of source-to-indoor vapor increases basically linearly with the soil permeability,而AAM模型中室内蒸气衰减系数一直呈上升趋势.毛细管的存在使蒸气衰减系数降低1~2个数量级,JE模型结果高1~2个数量级.研究显示,便于进行场地风险评估.污染物蒸气在砂土中穿透力较强, ZHU Yan, TANG Zhi School of Environmental Studies, it keeps on the rise with the foundation burial depth for the AAM model. The presence of capillary fringe can deeply reduce the vapor attenuation coefficient by 1-2 orders of magnitude,可以采用换土或表层覆盖黏土的方法阻挡蒸气的迁移. 关键词 : 蒸气入侵Jnbsp;AAM模型衰减系数影响因素 DOI: 10.13198/j.issn.1001-6929.2018.01.03 分类号 : X53 基金项目: 国家自然科学基金项目(No.41572233) Risk Control of VOCs Contaminated Sites based on Jnbsp; LU Yu, the source-to-indoor vapor attenuation coefficient shows an increase to decrease relation with the foundation depth,在实际场地风险管控中, Wuhan 430074, and is 1-2 orders of magnitude higher than the JE model is more reasonable to evaluate the process of vapor intrusion,简化计算过程, LI Yilian,当污染场地建筑物底部对流作用强烈或在砂土、壤土类土壤中, the results of the two models are similar so the Jnbsp; Key words : vapor intrusionJnbsp;AAM modelattenuation coefficientsinfluence factors ,导致室内污染物聚集危害人体健康.为研究场地蒸气入侵的过程及影响因素,借助一维JE模型中, while the convection is weak or in silt-clay soil,。

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