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 ZHANG Yu,REN Guocheng,YANG Yun,et al.Research on the control effects of groundwater immersion on the left reservoir bank of Xingan Navigation and Power Junction in Ganjiang River[J].Hydrogeology & Engineering Geology,2020,47(3):147-155.[doi:10.16030/j.cnki.issn.1000 -3665.201904058]



环 境 地 质


Research on the control effects of groundwater immersion on the left reservoir bank of Xingan Navigation and Power Junction in Ganjiang River
1000 -3665(2020)03 -0147 -09
1.河海大学地球科学与工程学院,江苏 南京211100;2.中国能源建设集团广东省电力设计研究院有限公司,广东 广州510000;3.江西省港航管理局,江西 南昌330038;4.江西省水上搜救中心鄱阳湖分中心, 江西 南昌330038
ZHANG Yu1 REN Guocheng2 YANG Yun1 ZHOU Zhifang1 GUO Shenggen3 XIONG Hongqiang4
1.School of Earth Science and Engineering, Hohai University, Nanjing,Jiangsu211100, China; 2.China Energy Engineering Group Guangdong Electric Power Design Institute Co., Ltd., Guangzhou,Guangdong510000, China; 3.Jiangxi Provincial Port and Waterway Construction Administration, Nanchang,Jiangxi330038, China; 4.Jiangxi Water Search and Rescue Centre, Poyang Lake Branch, Nanchang,Jiangxi330038, China
reservoir immersion numerical simulation dual strucure groundwater impervious wall relief well farmland -raised engineering
10.16030/j.cnki.issn.1000 -3665.201904058
开展二元结构库岸渗控措施研究对于灾害区域地下水资源管理和浸没控制工程的布置具有重要意义。文章以赣江新干航电枢纽工程库区左岸为研究对象,基于区域地下水流动态数值模拟与预测技术,构建地下水三维非稳定流有限元渗流模型,开展水库蓄水后库区地下水浸没动态评价和基于工程组合措施(防渗墙、减压井和抬田)的浸没控制效果对比研究。结果表明:无工程控制措施工况下,水库蓄水三年内库区左岸沿江区域和岸内地势低洼地带会发生较严重的渗漏型浸没;通过联合布设防渗墙、减压井和抬田工程等控制措施,能够有效地将浸没范围控制在堤防工程范围以内;在有防渗墙的截渗作用下,减压井排渍水位是地下水浸没控制的最敏感的参数。渗控工程的建议布置参数:防渗墙渗透系数为17.28×10-3 m/d,减压井间距设置为30 m,排渍水位29 m,减压井距防渗墙的距离为30 m,并在堤内低洼地带进行抬田复垦。本次研究结果可为水库蓄水前期渗控方案的布置提供应用技术支持。
It is of great significance to study the seepage control measures of the dual structure reservoir bank for the management of groundwater resources and the layout of flood control projects in disaster areas. Taking the left bank of the Xingan Navigation and Power Junction on the Xingan section of the Ganjiang River as the research object, and on the basis of the regional groundwater flow dynamic numerical simulation technology, this study establishes a finite element seepage model of 3D unsteady groundwater flow, and a comparative study was made on the dynamic evaluation of groundwater infiltration in the reservoir area after storage and the effects of the combined measures of infiltration control (impervious wall, relief well and farmland -raised engineering). The research results show that, in the case of no seepage wall, serious seepage infiltration occurs in the area along the river on the left bank of the reservoir and the coastal low -lying areas within three years of reservoir storage. However, by jointly deploying the seepage prevention wall, the relief well, and the lifting project control measures, the immersion range can be effectively controlled within the levee project, and under the effect of impervious wall, the drainage level of the relief well is the most sensitive parameter for immersion control. Recommended layout parameters for control engineering include: the hydraulic conductivity of the impervious wall is set as 17.28×10-3 m/d, the well spacing is 30 m, the drainage water level of the relief well is 29 m, the distance between the relief well and impervious wall is 30 m. The results of this research can also provide scientific basis for the arrangement of seepage control schemes in the early stage of the project.


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收稿日期: 2019 -04 -22; 修订日期: 2019 -09 -07
基金项目: 江西省交通运输厅重点工程科技计划(2016C0053);中央高校基本科研业务费专项资金资助(B200202014)
第一作者: 张宇(1996 -),男,硕士研究生,主要从事区域地下水流模拟方向的研究。E -mail:zhangyuzy96@163.com
通讯作者: 杨蕴(1985 -),男,副教授,从事地下水数值模拟和优化管理方面的科研和教学工作。E -mail:yy_hhu@hhu.edu.cn
更新日期/Last Update: 2020-05-15