吉林大学学报(地球科学版) ›› 2016, Vol. 46 ›› Issue (6): 1799-1807.doi: 10.13278/j.cnki.jjuese.201606203

• 地质工程与环境工程 • 上一篇    下一篇

回灌与回扬物理过程的解析推导及灌压变化规律

刘国庆1, 吴时强1, 范子武1, 周志芳2, 谢忱1, 乌景秀1, 柳杨1   

  1. 1. 南京水利科学研究院, 南京 210029;
    2. 河海大学地球科学与工程学院, 南京 210098
  • 收稿日期:2016-03-20 出版日期:2016-11-26 发布日期:2016-11-26
  • 作者简介:刘国庆(1984-),男,在站博士后,主要从事地表与地下水运动模拟及水环境方面的研究,E-mail:gqliu@nhri.cn
  • 基金资助:
    国家自然科学基金项目（41402217）；中国博士后基金项目（2014M561686）；中央级公益性科研院所基本科研业务专项基金（Y115003）

Analytical Derivation on Recharge and Periodic Backwashing Process and the Variation of Recharge Pressure

Liu Guoqing1, Wu Shiqiang1, Fan Ziwu1, Zhou Zhifang2, Xie Chen1, Wu Jingxiu1, Liu Yang1   

  1. 1. Nanjing Hydraulic Research Institute, Nanjing 210029, China;
    2. School of Earth Science and Engineering, Hohai University, Nanjing 210098, China
  • Received:2016-03-20 Online:2016-11-26 Published:2016-11-26
  • Supported by:
    Supported by the National Natural Science Foundation of China (41402217), China Postdoctoral Fund (2014M561686) and the Basic Scientific Research Service of the Central Level Public Welfare Research Institute(Y115003)

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摘要： 以回灌过程中渗透系数衰减模型为基础，推导了不同回扬次数的渗透系数解析表达式；将其应用于Theis公式，获得了考虑渗透系数衰减以及暂时性堵塞率条件下回灌与回扬物理过程中含水层压强的解析表达式，更准确地刻画了回灌与回扬的物理机制。计算结果表明：在连续回灌不回扬过程中，井内灌压增长符合指数曲线特征，而采取回扬措施后，由指数连续上升转变为间断式阶梯上升；回扬次数越多，灌压下降越明显，但灌压变化幅度随回扬次数的递增而减小。根据解析解定义的两种堵塞率的结果，可以实现利用实验判断不同成分回灌水源对含水层堵塞机理的分析，从而达到科学制定回灌水源标准的目的。

关键词: 渗透系数, 解析解, 回灌, 回扬, 堵塞, 地下水源热泵

Abstract: Based on attenuation model of hydraulic conductivity during the artificial recharge, the hydraulic conductivity analytic expression was derived. The aquifer pressure analytical expression in recharge and periodic backwashing physical processes with consideration of attenuation of hydraulic conductivity and temporary clogging rate, by application of hydraulic conductivity analytic expression on Theis formula. The physical mechanism of recharge and periodic backwashing can be more accurately described. The calculation results show that the wells recharge pressure growth in line with exponential curves in a continuous process of recharge without periodic backwashing, but the wells recharge pressure growth from the continuous rise in the index converted into intermittent stepped up with periodic backwashing. The more times periodic backwashing, more obvious recharge pressure decreased. But, with the increasing number of periodic backwashing, variation magnitude of recharge pressure is decreased. Based on the result of two blocking rate of analytical solution, the clogging mechanism in different components of the recharge water can be analyzed by using the experiments, which can guide to determine the standards of the recharge water sources.

Key words: hydraulic conductivity, analytical solution, recharge, periodic backwashing, clogging, groundwater source heat pumps

中图分类号: 

  • P641.25
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