济南东部大辛河渗漏段地下水示踪试验与分析

Groundwater Trace Test and Analysis on Leakage Area in Daxinhe River in Eastern Jinan City

2013年以来,济南市为正确处理好保泉和市民饮用优质地下水的关系,组织实施了地表水转换地下水补源系列工程,旨在补源保泉的前提下开采地下水。大辛河地表水转地下水工程是其中重要的组成部分,为了查明大辛河渗漏补源后地下水的补给方向、径流速度等,在大辛河主要渗漏段开展了地下水示踪试验。结果显示:地下水渗漏补源后沿渗漏段—龙奥大厦—济南东区供水奥体加压站—贤文小区一线大体自南向北径流,视径流速度约45m/d,越往两侧流速越缓慢,表明大辛河地表水转地下水工程主要对东郊水源地进行补给,对市区四大泉群补给较弱。示踪试验得出的结论,对大辛河地表水转地下水工程运行具有重要指导作用,对后期管理部门合理规划补源、开采布局具有重要的借鉴意义,促进济南保泉和供水的有机统一。

Since 2013, in order to correctly handle the relationship between spring protection and good qualitygroundwater for drinking, series of works for transferring surface water to groundwater have been carried out in Jinancity. Groundwater should be explored under the premise of protecting springs. The projection of transferring surfacewater to groundwater in Daxinhe river is an important part of the work. In order to identify the recharge directionand runoff velocity of Daxinhe river after the leakage recharge, tracer test has been carried out in main seepage sections of this river. It is showed that the groundwater will flow from south to north along leakage section-Long＇aoBuilding-Aoti compression station in eatern district of Ji＇nan-Xianwen district-after seepage and recharge. Therunoff speed is about 45m/ d, and the flow becomes slower in both sides. It is showed that the project of transferringsurface water to groundwater of Daxinhe river will mainly supply water to water source in eastern urban areas in Ji＇nan city, while water supply to four sprins is weak. Trace test has an important role in guiding the transfer of surfacewater groundwater project, and has important significance for rational planning of post mining layout management,promote spring protection and water supply in Jinan city.