水封洞库石油类污染物地下水时空分布模拟  

Simulation of Spatial-temporal Distribution of Petroleum Pollutants in Groundwater of W ater-sealed Caverns

作　　者：洪淑娜 Hong Shu’na(Jiangsu Tianyuan Local Environmental Industry Co.,Ltd.,Nanjing 210019,China)

机构地区：[1]江苏天圆地方环境产业有限公司,江苏南京210019

出　　处：《广东化工》2023年第4期163-165,共3页Guangdong Chemical Industry

摘　　要：采用地下水动力学数值模拟计算方法和FEFLOW软件对地下水封石洞油库建设造成的地下水位的变化和地下水漏斗进行预测,目的是分析地下水封洞库施工期涌水对区域地下水位的影响。项目对地下水的影响主要通过水封洞库中油品向周边地下水的扩散实现的,因此项目选择石油类物质作为污染物代表因子进行模拟。营运期非正常情况下,项目营运30年内,油品扩散造成的地下水中石油类含量最大值不超过0.03 mg/L,营运期,岩壁里地下水的压力大于洞库内任何点的储油静压力,此时对流作用主要由围岩朝向洞库内部方向,项目对地下水环境可能产生影响的污染源主要为水封洞库储油向周边地下水的对流扩散作用。营运30年后,油品扩散造成的地下水中石油类浓度0.015 mg/L等值线的迁移距离最大为228米。The underground water dynamics numerical simulation calculation method and FEFLOW software are used to predict the change of underground water level and underground water leakage bucket caused by the construction of underground water sealed cavern oil depot, in order to analyze the impact of water inflow during the construction of underground water sealed cavern on the regional underground water level. The impact of the project on groundwater is mainly realized by the diffusion of oil from the water-sealed cavern reservoir to the surrounding groundwater, so the project selects petroleum substances as the representative factor of pollutants for simulation. Under abnormal conditions during the operation period, within 30 years of the project operation, the maximum content of petroleum in the groundwater caused by oil diffusion does not exceed 0.03 mg/L. During the operation period, the pressure of groundwater in the rock wall is greater than the static pressure of oil storage at any point in the cavern. At this time, the convection is mainly from the surrounding rock towards the interior of the cavern. The pollution source that the project may have an impact on the groundwater environment is mainly the convection diffusion of oil storage in the water-sealed cavern to the surrounding groundwater. After 30 years of operation, the maximum migration distance of petroleum concentration 0.015 mg/L contour line in groundwater caused by oil diffusion is 228 meters.

关 键 词：地下水封洞库 地下水环境 数值模型 涌水量 

分 类 号：TQ[化学工程]