朱恒华 杨丽芝 边农方

摘 要：为在淄博大武水源地遭受污染地区合理布置治理工程，在堠皋试验区进行裂隙岩溶水示踪试验，分析试验区地下水流向，了解金岭断裂两侧水力联系。结果表明：示踪剂运移方向主要为12°和104°方向，优势主流方向为104°;示踪剂浓度与水力坡度、速度、观测孔距离无明显相关关系，试验区岩溶介质具有非均质各向异性特征;地下水视流速大多超过100 m/d，说明研究区地下水流动迅速，污染物运移以对流为主;研究区灰岩断裂构造为张性断裂，导水性良好，对地下水流动有促进作用;研究区含水层岩溶发育不均一，溶孔、溶隙、裂隙、管道、溶洞并存。

关键词：大武水源地;裂隙岩溶水;示踪试验;钼酸铵

Abstract： Tracer test was done in fracture-karst aquifer of Hougao test site of Dawu water source area in order to make a thorough investigation of hydrogeological condition for remediation. We analyzed groundwater flow field， investigated the hydraulic connection across Jinling fault based on the tracer test.The results show that a） the tracer migration directions are mainly for 12° and 104° and the preferential mainstream direction is 104°; b） there is no correlation between tracer concentration and the potential factors including hydraulic gradients， flow velocities and the distance of observation wells; this indicates that the regional karstified media studied here are heterogeneous and anisotropic; the apparent velocities of groundwater are very fast and the transportation of pollutions are mainly convection; c） the tensional fault zones of limestone are well-developed; this leads to high hydraulic conductivity that can promote groundwater flow and; d） the development of aquifer is heterogeneous as well， where karst zones are featured by the coexistence of dissolving hole， dissolving gap， fissure， conduit， and karst cave.

Key words： Dawu water source area; groundwater-bearing fractured karst; tracer test; ammonium molybdate

大武水源地位于淄博市临淄区，是我国北方罕见的特大型地下水水源地，承担着淄博市张店、临淄两区城市居民生活，齐鲁石化、辛店发电厂等国家骨干企业生产、生活及水源地周围部分乡镇工农业生产供水任务，对淄博市经济的稳定发展起到重要作用[1]。自大武水源地投入使用以来，随着当地工农业生产的迅速发展和居民生活水平的不断提高，用水规模迅速扩大，造成地下水开采量持续增加[2]。水源地周围诸多化工企业废水排放对水源地造成污染，引起水环境状况不断恶化[3]。大武水源地储水岩层主要为裂隙岩溶灰岩，泄漏的石油及其他污染物极易通过包气带进入含水層，对大武水源地地下水安全构成极大威胁[4]。……