单井回灌中回灌堵塞与回灌压力波动对渗流场影响的理论研究

李炯; 李明广; 陈锦剑; 夏小和

doi:10.11779/CJGE2019S2057

单井回灌中回灌堵塞与回灌压力波动对渗流场影响的理论研究 English Version

上海交通大学土木工程系,上海 200240

基金项目: 国家自然科学基金项目（41602283,41727802）; 上海市科委项目（19QC1400800）

详细信息

作者简介:
李炯(1990— ),男,博士研究生,主要从事地下水渗流方面的研究。E-mail：lijiong0814@sjtu.edu.cn。

通讯作者:
陈锦剑，E-mail：chenjj29@sjtu.edu.cn

计量
- 文章访问数: 340
- HTML全文浏览量: 9
- PDF下载量: 112
出版历程
- 收稿日期: 2019-04-27
- 发布日期: 2019-07-19

Theoretical study on influence of well clogging and variable injection pressure on seepage field induced by single-well recharge

Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

摘要

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。
- 回灌堵塞 /
- 回灌压力波动 /
- 渗流场 /
- Weber变换 /
- 完整井
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.
- well clogging /
- variable injection pressure /
- seepage field /
- Weber transform /
- fully penetrating well

HTML全文

参考文献(9)

[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))