城市管网渗漏地下水污染数值模拟研究:以深圳市某河间地块为例  

Numerical simulation of groundwater pollution caused by leakage of urban pipe network:a case study on an interfluve in Shenzhen City

作　　者：刘亚辉 尹茂生 郭跃华 刘钰彬 唐彪 肖凯 LIU Yahui;YIN Maosheng;GUO Yuehua;LIU Yubin;TANG Biao;XIAO Kai(College of Water Resources and Environment,China University of Geosciences(Beijing),Beijing 100083,China;Ningbo Eastern University of Technology,Ningbo 315200,Zhejiang,China;CCCC-FHEC Ecological Engineering Co.Ltd.,Shenzhen 518106,Guangdong,China;Shenzhen Longhua Drainage Co.,Ltd.,Shenzhen 518110,Guangdong,China;Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences,Yantai 264003,Shandong,China)

机构地区：[1]中国地质大学(北京)水资源与环境学院,北京100083 [2]宁波东方理工大学,浙江宁波315200 [3]中交一航局生态工程有限公司,广东深圳518106 [4]深圳市龙华排水有限公司,广东深圳518110 [5]中国科学院烟台海岸带研究所,山东烟台264003

出　　处：《华东地质》2025年第1期104-113,共10页East China Geology

基　　金：国家自然科学基金面上项目“生物扰动对红树林湿地地下水循环及溶解无机碳排放的影响(编号:42177046)”;企业委托技术开发横向课题“市政排水设施渗漏数值模拟研究(编号:STKJZX072022005)”联合资助。

摘　　要：针对现阶段城市地下管网渗漏导致的地下水体污染问题,文章选取深圳市光明区某河间地块作为研究区域,并进行了详细的地下水环境背景调查。基于调查结果,利用数值模拟软件(Groundwater Modeling System,GMS)建立了研究场地的水文地质模型和三维溶质运移数值模型,研究了复杂环境下市政排水设施的渗漏情况及污染物的迁移过程。结果表明:研究区地下水背景水质存在污染风险,主要污染指标包括硝酸盐、氯化物、亚硝酸盐、总大肠菌群和锰离子等,其中,硝酸盐浓度达25mg/L;管网渗漏区域的污染物迁移方向受地形影响,总体由东北向西南流动,迁移速率约为0.5m/d。参数的敏感性分析表明:含水层渗透系数越大,地下水流动和污染物迁移扩散的程度越显著,污染羽扩散范围也越大。该研究成果为城市管网渗漏导致的地下水污染的防治提供了科学依据,有助于推动该区域及类似环境中管网渗漏问题的科学解决和管理实践。Regarding the underground water pollution resulting from the leakage of urban underground pipe networks,this study selected a specific interfluve in Guangming District,Shenzhen City as the research area and conducted a detailed background investigation of the groundwater environment.Based on the investigation results,we established a hydrogeological conceptual model and a three-dimensional solute transport numerical model by employing the numerical simulation software(Groundwater Modeling System,GMS)to systematically explore the leakage effects of municipal drainage facilities on migration process of groundwater pollutants.The results demonstrated that there existed a pollution risk of groundwater quality in the study area,which was mainly indi-cated by nitrate,chloride,nitrite,total coliform bacteria and manganese ions,etc.Among them,the nitrate concen-tration was as high as 25 mg/L.The migration direction of pollutants in the leakage area of the pipe network was influenced by topographic characteristics and generally flows from the northeast to the southwest,with a migra-tion rate of approximately 0.5 m/d.Additionally,the sensitivity analysis of aquifer parameters indicated that the larger the permeability coefficient of the sediment,the more prominent the degree of groundwater flow and pollu-tant migration and diffusion,and the broader the diffusion range of the pollution plume.The research findings of-fer a scientific basis for the prevention and control of groundwater pollution caused by urban pipe network leak-age and contribute to facilitating the scientific solution and management practice of pipe network leakage issues in this area and similar environments.

关 键 词：管网渗漏 地下水污染 数值模拟 深圳市光明区 河间地块 

分 类 号：P641[天文地球—地质矿产勘探]