【摘要】 根据石油类污染物在地下水环境中的迁移机理,在分析研究区自然概况及水文地质条件的基础上建立了该地区包气带及大厚度砾卵石含水层介质中的二维迁移扩散模型．以三类生活饮用水标准(0．05 mg／L)为界,通过预测结果表明,穿孔泄露100天,沿水流方向上60 m处污染物达标,10年后扩展到440 m．管线爆裂1年后超标范围可达210 m,10年后整个区域均可达标．证明穿孔泄露对地下水污染的影响比管线爆裂大．更多还原

【Abstract】 According to oil transference paths in the groundwater environment and based on the analysis of local hydrogeological condition, two-dimentional models on transference and diffusion of oil pollutant in vadose zone and heavy gauge cobble unconfined aquifer have been developed. Bounded by theⅢ-grade of Living Drinking Water Standard of China which is 0.05 mg/L, the results of the forecasting model show that, after seepage for 100 days in the water flow direction, concentration of oil will be over standard in 60 m, and ten years later this will extend to 440 m. Under the condition of pipeline breakage, one year later, the pollution will be over standard in 210 m, and ten years later, the whole region will agree with the standard agian. It was proved that seepage do more harm than breakage in groundwater contaminations.更多还原