多维反滤回灌井室内稳定流试验研究

发布时间：2018-01-31 04:44

本文关键词： 反滤回灌井多维回灌试验单井回灌量稳定流　出处：《岩土工程学报》2017年02期 　论文类型：期刊论文

【摘要】：反滤回灌井是山东胶东半岛地下水回灌中常用的回灌设施,它由普通回灌井和回灌池组成。在分析现有反滤回灌井存在问题的基础上,设计了一组回灌量大,又能防淤积、防低水位污水回灌、抗水流冲刷的多维反滤回灌井,给出了单井回灌量的理论计算公式和计算参数;同时,研制了室内稳定流回灌试验装置,进行了普通回灌井、现有反滤回灌井和多维反滤回灌井的室内稳定流试验研究,得出结论:1同现有反滤回灌井相比,多维反滤回灌井的单井回灌量增加了370%~420%;2多维回灌井口的形状影响单井回灌量,在过水断面面积相同的情况下,圆形多维回灌井口的单井回灌量最大;3初次回灌试验中,单井回灌量最大,随回灌试验次数增加,单井回灌量逐渐减小,并趋向于稳定;4单井回灌量与多维回灌井口过水断面开孔率是一个非线性的关系,20%的过水断面开孔率是适宜的。研究成果对于提高反滤回灌井的回灌能力和定量计算单井回灌量具有重要的现实意义。
[Abstract]:Filter and recharge well is a commonly used recharge facility in Shandong Jiaodong Peninsula, which is composed of ordinary recharge well and recharge tank. Based on the analysis of the existing problems in the existing well, a group of large amount of recharge is designed. The multi-dimensional filter irrigation well which can prevent siltation, low water level sewage recharge and water flow erosion is also prevented. The theoretical calculation formula and calculation parameters of single well recharge quantity are given. At the same time, the laboratory steady flow recirculation test device was developed, and the indoor steady flow test of the common recirculation well, the existing filter recharge well and the multidimensional filter recirculation well was carried out. The conclusion is drawn that the ratio of the two wells is higher than that of the existing one. The volume of single well recharge in multi-dimensional filter and recharge well increased by 370% 420. (2) the shape of multi-dimensional recharge wellhead affects the recharge quantity of single well, and the single well recharge quantity of circular multi-dimension recharge well is the largest when the cross section area is the same; (3) in the initial recharge test, the single well recharge quantity is the largest, and with the increase of the recharge test times, the single well recharge quantity decreases gradually and tends to be stable; (4) the recharge rate of single well is a nonlinear relation with the cross section opening rate of multi-dimension recharge well. The open porosity of 20% cross section is suitable. The research results have important practical significance for improving the recharge capacity of filter and recharging wells and calculating the recharge quantity of single well quantitatively.
【作者单位】：济南大学;济南市热力工程公司;河海大学;
【基金】：山东省科技计划项目(2013GSF11606) 水利部公益性科研专项项目(201401024)
【分类号】：P641.25
【正文快照】： 山东胶东半岛属低山丘陵区,人均水资源占有量291.2 m3,属较严重缺水地区。该区年降雨量的70%~80%集中在7月—8月份,枯水季节,河流经常出现断流和枯涸现象;汛期丰水季节,大量雨洪水无法利用,流入大海。为此,胶东半岛兴建了一批汛期雨洪水利用工程,其中反滤回灌井是最常用的一种

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