CAJ | 학술논문

文章以北京市东南郊大兴迭隆起隐伏岩溶水子系统内的两个水源地(大兴念坛水源地与通州龙旺庄水源地)为例，研究数值模拟方法在隐伏岩溶地下水水源地保护区划分中的应用。研究基础为基于 GMS 建立的包括第四系与岩溶含水层在内的三维非稳定流地下水数值模拟模型，采用的主要技术手段为质点追踪技术，结合溶质质点迁移100 d 与1000 d 的距离划分水源地的一级与二级保护区，并提出相应的污染防控措施。研究得出，对于隐伏岩溶水大部分来自上覆第四系松散孔隙水越流补给的情况，岩溶水源地保护区即是上覆松散含水层的保护区范围，应加强第四系孔隙含水层地下水污染的防治，以保护岩溶水不受污染。
문장이북경시동남교대흥질륭기은복암용수자계통내적량개수원지(대흥념단수원지여통주룡왕장수원지)위례，연구수치모의방법재은복암용지하수수원지보호구화분중적응용。연구기출위기우 GMS 건립적포괄제사계여암용함수층재내적삼유비은정류지하수수치모의모형，채용적주요기술수단위질점추종기술，결합용질질점천이100 d 여1000 d 적거리화분수원지적일급여이급보호구，병제출상응적오염방공조시。연구득출，대우은복암용수대부분래자상복제사계송산공극수월류보급적정황，암용수원지보호구즉시상복송산함수층적보호구범위，응가강제사계공극함수층지하수오염적방치，이보호암용수불수오염。
A wellhead protection area (WHPA)is an effective technical method and basic standard for safe-guardking groundwater resources.Frequently-used methods for WHPA delimitation include the empirical approach,analytical methods,tracing tests and numerical simulation.Of these,numerical simulation is pre-ferred for complicated hydrogeological conditions.It is quite difficult to use numerical simulation methods in WHPA delimitation for a concealed karst aquifer,as a result of its heterogeneity,anisotropy,parameter un-certainty and development under Quaternary or other bedrock.This study takes two groundwater sources, Daxing Niantan wellhead and Tongzhou Longwangzhuang wellhead,which are located in the concealed karst system southeast of Beijing,as examples to study the numerical simulation method of WHPA delimitation. The numerical simulation model,which takes the three-dimensional transient flow of Quaternary and karst aquifer into consideration,is established by the GMS.Then particle tracing technology is used to confirm the WHPA,taking a tracing time of 100 days as the primary protection zone and 1,000,days as the secondary protection zone.Related pollution-control measures are proposed according to the WHPA results.Addition-ally,given that leakage from the overlying Quaternary loose-porosity aquifer is the primary recharge source for the concealed karst aquifer,the boundary of the Quaternary WHPA is as the same as the boundary of the karst WHPA.Control of the Quaternary water contamination needs to be enhanced to prevent pollution of the karst water.