摘要
地下水环境质量是衡量生态文明建设水平的重要指标,应用科学有效的计算方法模拟地下水污染物渗漏的影响范围及程度,对于地下水污染的防治有着极其重要的意义。COMSOL Multiphysics作为一款多物理场建模与仿真软件,能够较好地结合现实水文地质条件,有效地模拟自然界一些水文地质过程发生和发展过程,对进行以预防和修复治理为目的的地下水污染物数值模拟预测具有十分重要的应用价值。本文根据研究区的水文地质特征,利用COMSOL Multiphysics软件构建了地下水数值模型,对研究区地下水污染物运移规律进行分析,对污染物运移轨迹进行模拟与预测。预测结果表明,氯仿、石油烃污染物在释放1 000 a时的影响范围分别是6.3×10^(6)m^(2)和5.7×10^(6)m^(2)。由于地下水流速相对较慢,污染物扩散速度极其缓慢,研究区内污染物需要在百年时间量级上才可能形成较大规模扩散,短期内对地下水环境的污染风险较小。模拟结果为研究区的地下水环境评价和防范措施提供了科学依据。
Groundwater environmental quality is an important indicator to measure the level of ecological civilization construction.Applying scientific and effective calculation methods to simulate the influence scope and extent of groundwater pollutant leakage is of great significance for the prevention and control of groundwater pollution.COMSOL Multiphysics,as a multi-physical field modeling and simulation software,can effectively simulate the occurrence and development of some natural hydrogeological processes in combination with the actual hydrogeological conditions,and has very important application value for the numerical simulation and prediction of groundwater pollutants for the purpose of prevention and remediation.According to the hydrogeological characteristics of the study area,this paper uses COMSOL Multiphysics software to build a numerical model of groundwater,analyze the migration law of groundwater pollutants in the study area,and simulate and predict the migration trajectory of pollutants.The prediction results show that the influence range of chloroform and petroleum hydrocarbon pollutants is 6.3×10^(6)m^(2)and 5.7×10^(6)m^(2)respectively when they are released for 1000 years.Due to the relatively slow flow rate of groundwater and the extremely slow diffusion rate of pollutants,the pollutants in the study area need to form a large-scale diffusion on the scale of a hundred years,and the pollution risk to the groundwater environment in the short term is small.The simulation results provide a scientific basis for groundwater environmental assessment and preventive measures in the study area.
作者
张洋
ZHANG Yang(Nucleus Industry No.247 Brigade of Tianjin North China Geological Exploration Bureau,Tianjin 301800)
出处
《地下水》
2023年第2期17-19,共3页
Ground water
基金
天津华北地质勘查局科研项目(HK2022-B5)。
