吉林省白城市地下水数值模拟及其变化趋势  

Groundwater Numerical Simulation and Its Changing Trend in Baicheng City,Jilin Province

作　　者：郑佳[1] 肖长来[2] 邵景力[1] 梁秀娟[2] 

机构地区：[1]中国地质大学水资源与环境学院,北京100083 [2]吉林大学环境与资源学院,吉林长春130026

出　　处：《现代地质》2009年第1期130-136,共7页Geoscience

基　　金：吉林省科技发展计划项目“吉林省西部地区生态建设水资源配置措施研究”(20020406);中国地质调查局地质调查项目“松嫩平原地下水资源及其环境问题专题研究”(200310400018)

摘　　要：为了给吉林省白城市地下水资源合理开发利用提供科学依据，运用地下水模拟技术对白城市地下水位变化趋势进行预测。首先在分析研究区水文地质条件的基础上建立水文地质概念模型，将含水系统概化为潜水含水层、越流层和承压含水层，并确定了系统的边界条件。运用地下水模型软件（GMS）对研究区地下水流进行了模拟和预测，预测结果表明在扩大开采的情况下，潜水含水层水位总体下降约1～2m；随着开采量的增加和时间的增长，含水层在洮儿河扇形地、洮南、研究区东北部、镇赉、大安南部等地相继出现疏干现象，最大降幅达5～6m。承压含水层在大安南部、镇赉北部等地水位下降较大，但是流场整体降幅不大，总体降幅在0．5m以内。最后提出了地下水合理开发利用建议。This paper used the groundwater modeling method to predict the changing trend of groundwater level in Baicheng City, which will provide scientific proofs for reasonable groundwater development. Firstly, based on analysis of the regional hydrogeological conditions of the study area, a conceptual model of groundwater system in Baieheng City was built, in which the aquifer system was simplified into the unconfined aquifer, the leaky aquifer and the confined aquifer, and the boundary conditions as well as the main source terms were determined. And then, the groundwater system was numerically simulated and predicted with the international standard software GMS. The prediction results showed that the groundwater level in the unconfined aquifer fell by 1 - 2 m under the condition of expanding exploitation. With increasing of the exploitation volume and time, the aquifer dried up at the fan-shaped area of Tao＇ er River, Taonan, the northeast of the study area, Zhenlai and the south of Da＇an, with the maximum drawdown up to 5 -6 m. The groundwater level in the confined aquifer dropped greatly at the south of Da＇an and the north of Zhenlai, with the drawdown less than 0. 5 m in general. Lastly, the paper proposed the corresponding suggestions for reasonable development of groundwater resources in the study area.

关 键 词：吉林省白城市 地下水 地下水模拟软件 数值模拟 

分 类 号：P641.2[天文地球—地质矿产勘探] TP301.6[天文地球—地质学]