Theoretical study on influence of well clogging and variable injection pressure on seepage field induced by single-well recharge
-
摘要: 为分析承压含水层单井回灌过程中回灌堵塞与回灌压力波动对渗流场的影响,通过引入渗透系数衰减模型和设置正弦变化的水头边界,建立了考虑回灌堵塞效应的单井变压力回灌模型,并利用Weber变换得到了模型的解析解,进而据此分析了渗透衰减与回灌压力波动对渗流场的影响。研究结果表明:①渗透系数衰减对回灌流量与承压水头抬升具有抑制作用,且该抑制作用随着衰减指数的增大及回灌时间的推移而愈加显著;②回灌压力波动对渗流场分布存在影响,且当波动幅值越大而频率越小时影响越显著;③回灌总量受波动幅值和频率的影响相对较小。提出的回灌模型可为回灌压力与回扬周期设计提供依据。Abstract: To analyze the influence of clogging and variable injection pressures on groundwater seepage field, a model for Single-Well-Recharge (SWR) in confined aquifer is established. In the model, clogging is considered by assuming an exponentially decayed permeability, where as the variable injection pressures are concerned by setting sinusoidal pressure boundary. The analytical solution for the model is obtained using the Weber transform. By performing parameter analysis based on the proposed solution, the results can be drawn as follows: (1) The permeability reduction due to clogging limits the injection rate and artesian head increment, and the limitation is more considerable as the permeability reduction index and injection time increase. (2) The variable injection pressures have certain influences on the groundwater seepage field, and the influences are more significant when the fluctuation amplitude is larger while the fluctuation frequency is smaller. (3) The influences of injection pressure fluctuation and frequency on the total groundwater injection amount are relatively small. The proposed model can provide theoretical basis for the design of recharge pressures and pump lifting cycles.
-
[1] 何满潮, 刘斌, 姚磊华, 等. 地热单井回灌渗流场理论研究[J]. 太阳能学报, 2003(2): 197-201.
(HE Man-chao, LIU Bin, YAO Lei-hua, et al.Study on the theory of seepage field for geothermal single well reinjection[J]. ActaEnergiae Solaris Sinica, 2003(2): 197-201. (in Chinese)).[2] ZHENG G, CAO J, CHENG X, et al.Experimental study on the artificial recharge of semiconfined aquifers involved in deep excavation engineering[J]. Journal of Hydrology, 2018, 557: 868-877. [3] 何满潮, 刘斌, 姚磊华, 等. 地下热水回灌过程中渗透系数研究[J]. 吉林大学学报(地球科学版), 2002(4): 374-377.
(HE Man-chao, LIU Bin, YAO Lei-hua, et al.Study on hydraulic conductivity during geothermal reinjection[J]. Journal of Jilin University (Earth Science Edition), 2002(4): 374-377. (in Chinese))[4] 黄修东, 束龙仓, 刘佩贵, 等. 注水井回灌过程中堵塞问题的试验研究[J]. 水利学报, 2009(4): 430-434.
(HUANG Xiu-dong, SHU Long-cang, LIU Pei-gui, et al.Experimental study on clogging of recharge well[J]. Journal of Hydraulic Engineering, 2009(4): 430-434. (in Chinese))[5] 李璐, 卢文喜, 杜新强, 等. 人工回灌过程中含水层堵塞试验研究[J]. 人民黄河, 2010(6): 77-78.
(LI Lu, LU Wen-xi, DU Xin-qiang, et al.Experimental study on aquifer clogging during artificial recharge[J]. Yellow River, 2010(6): 77-78. (in Chinese))[6] 路莹, 杜新强, 迟宝明, 等. 地下水人工回灌过程中多孔介质悬浮物堵塞实验[J]. 吉林大学学报(地球科学版), 2011(2): 448-454.
(LU Ying, DU Xin-qiang, CHI Bao-ming, et al.The porous media clogging due to suspended solid during the artificial recharge of groundwater[J]. Journal of Jilin University (Earth Science Edition), 2011(2): 448-454. (in Chinese))[7] THEIS C V.The relation between the lowering of the Piezometric surface and the rate and duration of discharge of a well using ground‐water storage[J]. Eos Transactions American Geophysical Union, 1935, 16(2): 519-524. [8] 闫峭, 马聪, 周维博. 地下水回灌过程中水文地质参数的反演[J]. 灌溉排水学报, 2015(7): 88-92.
(YAN Qiao, MA Cong, ZHOU Wei-bo, Hydrogeology parameters inversion during the process of groundwater recharge[J]. Journal of Irrigation and Drainage, 2015(7): 88-92. (in Chinese))[9] 刘国庆, 吴时强, 范子武, 等. 回灌与回扬物理过程的解析推导及灌压变化规律[J]. 吉林大学学报(地球科学版), 2016(6): 1799-1807.
(LIU Guo-qing, WU Shi-qiang, FAN Zi-wu, et al.Analytical derivation on recharge and periodic backwashing process and the variation of recharge pressure[J]. Journal of Jilin University (Earth Science Edition), 2016(6): 1799-1807. (in Chinese)) -
期刊类型引用(5)
1. 李炯,李明广,詹红兵,陈锦剑,夏小和. 考虑井周堵塞效应的定水头非完整回灌井流模型. 岩土工程学报. 2024(01): 207-215 . 本站查看
2. 李炯,李明广,詹红兵,陈锦剑,夏小和,张硕. 井周堵塞对承压含水层定流量回灌渗流场影响的半解析研究. 岩土力学. 2023(10): 2871-2878 . 百度学术
3. Yi-Feng Chen,Jun Zeng,Hongtao Shi,Yifan Wang,Ran Hu,Zhibing Yang,Chuang-Bing Zhou. Variation in hydraulic conductivity of fractured rocks at a dam foundation during operation. Journal of Rock Mechanics and Geotechnical Engineering. 2021(02): 351-367 . 必应学术
4. 梁永丰,吴波,王晋进,李成虎,索潇,张珂. 基于正交试验、FAHP-价值工程法的基坑工程回灌参数优选. 隧道建设(中英文). 2021(09): 1492-1501 . 百度学术
5. 石伟航,徐帮树,马秀媛,路林海,夏鹏,李罡. 砂卵石地层非稳定流回灌模型试验研究. 科学技术与工程. 2020(10): 4073-4079 . 百度学术
其他类型引用(2)
计量
- 文章访问数: 340
- HTML全文浏览量: 9
- PDF下载量: 112
- 被引次数: 7