基于FEFLOW的高尔夫球场地下水污染风险预测研究与效果评估

针对日益严重的高尔夫球场地下水污染问题,以高尔夫球场的地下水污染防渗和保障城市供水安全为目标,为了预测高尔夫球场的地下水污染风险和探究其防渗方法,以北方某高尔夫球场为例,通过分析研究区概况,基于FEFLOW建立了地下水流和溶质运移模型,采用数值分析方法,预测球场污水处理设施失效时的地下水污染风险,并评估防渗效果。结果表明:在污水处理设施失效100 d时,锰扩散最远距离为112. 45 m,六六六扩散最远距离为48. 50 m,短期内扩散较快,对下游居民区产生威胁;防渗措施应用后100 d时,污染物扩散最远距离约为50. 2 m;应用1 000 d时,污染物扩散最远距离约为54. 8 m,扩散范围变化不大且控制在球场范围内,防渗效果良好。该数值分析方法很好的预测了污染物在有无防渗两种工况下的迁移情况,通过设置防渗层和防渗帷幕有效阻滞了污染物迁移,研究成果对高尔夫球场的地下水污染控制具有一定的借鉴意义。

Groundwater pollution risk prediction research and effect evaluation of golf course based on FEFLOW

In view of the increasingly serious problem of groundwater pollution in golf courses，the groundwater pollution prevention and safety of urban golf courses are the research objectives. Taking a golf course in the north as an example to predict the risk of groundwater pollution on golf courses and explore their anti-seepage methods，the groundwater flow model and solute transport model were established based on FEFLOW by analyzing the general situation of the research area. The numerical analysis method was used to evaluate the groundwater pollution risk and anti-seepage effect when the stadium sewage treatment facility failed. The results show that when the sewage treatment facility fails for 100 days，the maximum diffusion distance of Mn is 112. 45 m，and the longest diffusion distance of BHC is 48. 50 m. It spreads rapidly in the short term and poses a threat to the downstream residential area. When the anti-seepage measures are applied for 100 days. The maximum diffusion distance of pollutant is about 50. 2 m; when it is applied for 1 000 days，the maximum diffusion distance of pollutant is about 54. 8 m，the diffusion range does not change much and is controlled within the course of the golf course，and the anti-seepage effect is good. The numerical analysis method predicts the migration of pollutants under the two conditions of anti-seepage well. The anti-seepage layer and the anti-seepage curtain effectively block the migration of pollutants. The research results have certain reference significance for the groundwater pollution prevention of golf courses.