摘要
对陕西省洛南县香沟某再生铜矿地下水污染进行数值模拟,为再生铜矿选址、地下水污染的预防提供科学的指导依据。根据野外抽水试验以及钻孔数据,建立山区水文地质概化模型,对模型进行识别与验证。使用MODFLOW模块及MT3D模块对该地区进行地下水流场和溶质运移数值模拟。模拟情景采取示踪剂30 d短时注入模式进行预测。污染物超标晕在30 d时最大,Pb类污染物的污染超标范围在切断污染源后会减小,浓度会随着时间推移逐渐减小直至未检出,Cu类污染物切断污染源后,检出范围污染晕会随着时间先增大,再到未检出。污染晕沿着沟道水流方向呈狭长羽状分布;污染浓度距点污染源距离越大,浓度越小。该研究可为区域地下水资源评价提供依据。
The groundwater pollution of a renewable copper industry in Luonan County of Shaanxi Province Is simulated, which can provide scientific guidance for the site selection of renewable copper industry and prevention of groundwater pollution. Based on field experiments,the hydrogeology model is established by using the Visual Modflow software. After model calibration, the groundwater flow and solute transport in this region are simulated. The results show that the pollution plume reaches its maximum in 30 days when short time tracer mode is predicted. Furthermore, after cutting off the pollution source, the exceeded pollution range of plumbum will decrease at once, while the exceeded pollution range of copper will firstly increase, and then decrease gradually. The contaminants in the channel transported mainly along the flow direction, which distributes under a narrow-pinnate condition, and the pollution degree declines as the distance from the point source pollution increases. The results provide a scientific guidance for groundwater evaluation.
作者
李巍
卢玉东
卢阳春
郭雯
梁少欢
LI Wei;LU Yu-dong;LU Yang-chun;GUO Wen;LIANG Shao-huan(School of Environment Science and Engineering,Chang'an University,Xi'an 710054,China;Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region,Ministry of Education,Chang'an University,Xi'an 710054,China)
出处
《中国农村水利水电》
北大核心
2019年第3期28-31,36,共5页
China Rural Water and Hydropower
基金
贵州省教育厅创新群体重大研究项目(黔教合KY字[2016]054
[2016]055)
