王河地下水库高效自渗回灌系统数值模拟研究
发布时间：2018-11-02 17:36
【摘要】：回灌系统是王河地下水库供水工程中重要的一部分,王河地下水库回灌系统中使用的自渗回灌井存在着回灌效率低、易冲刷和淤堵等问题,严重影响了回灌工程的回灌效果和使用寿命。本文对现有自渗回灌井进行了结构改进和优化,设计出三种新型对偶式高效抗冲防淤型自渗回灌井,并进行了室内稳定流回灌试验和单井回灌量的理论计算分析,选择其中回灌量最大的对偶式自渗回灌井,形成高效自渗回灌系统;并基于现有的普通自渗回灌系统和高效自渗回灌系统,对王河地下水库进行了地下水数值模拟研究,具体研究内容和主要研究成果如下:(1)新型对偶式高效抗冲防淤型自渗回灌井设计对王河地下水库使用的的自渗回灌井进行调查研究,在分析影响自渗回灌井回灌量的各种因素基础上,设计出圆形对偶式自渗回灌井、台形对偶式自渗回灌井和方形对偶式自渗回灌井。通过新型自渗回灌井和普通自渗回灌井进行室内试验结果得出:在相同条件下,三种自渗回灌井单井回灌量均大于普通自渗回灌井单井回灌量,且三种新型自渗回灌井中台形对偶式自渗回灌井的回灌量最大,为普通自渗回灌井单井回灌量的5.15倍。(2)王河地下水库高效自渗回灌系统王河地下水库回灌系统包括王河河道含水层自渗回灌系统和过西引水回灌渠渠道自渗回灌系统,在平面上采用Y字形布置方式。基于这种布置方式,利用设计的回灌效率最高的新型自渗回灌井代替原有的普通自渗回灌井,可形成高效自渗回灌系统。(3)王河地下水库地高效自渗回灌系统数值模拟利用Visual MODFLOW软件,首先建立了研究区水文地质概念模型和数学模型;其次通过识别验证确定该模型能够真实反映王河地下水库的地下水流场;最后以2004年6月1日的水位作为调算的初始水位,当有两个抽水井群时给出三种回灌方案,只有一个抽水井群时给出两种回灌方案,对王河地下水库地下水进行预测,预测结果得出:由台形对偶式自渗回灌井组成的高效自渗回灌系统能够使有限的水资源得到更大限度地利用,使库区水位上升明显,王河地下水库能够更好的发挥调节作用。可为类似地下水库回灌工程参考使用。
[Abstract]:The recharge system is an important part of the water supply project of Wanghe underground reservoir. The self-permeable recharge well used in the recharge system of the Wanghe underground reservoir has some problems such as low recharge efficiency, easy scouring and blockage, etc. It seriously affects the recharge effect and service life of the recharge project. This paper improves and optimizes the structure of the existing self-permeating recharge wells, designs three new dual self-permeable recirculation wells with high efficiency and anti-siltation, and carries out the indoor steady flow recharge test and the theoretical calculation and analysis of the single well recharge quantity. The dual self-permeable recirculation well with the largest recharge amount is selected to form an efficient self-permeating recharge system. Based on the existing self-infiltration recharge system and the high-efficiency self-infiltration recharge system, the groundwater numerical simulation of Wanghe underground reservoir is carried out. The specific research contents and main research results are as follows: (1) the design of a new dual self-permeating recharge well with high efficiency anti-erosion and siltation prevention is carried out to investigate and study the self-permeating recharge well used in Wanghe Underground Reservoir. On the basis of the analysis of various factors affecting the recharge amount of self-permeating recharge well, the circular dual self-permeable recirculation well, the platform dual self-permeating recirculation well and the square dual self-permeable recirculation well are designed. Through laboratory test of new self-permeable recharge well and common self-permeated recirculation well, it is concluded that under the same conditions, the single well recharge rate of three self-permeable recirculation wells is higher than that of common self-permeated recirculation well. In addition, in the three new self-permeable recharge wells, the recharge amount of the dual self-permeation recirculation wells is the largest. It is 5.15 times as much as the single well of ordinary self-permeating recharge well. (2) the high-efficiency self-permeation recharge system of Wanghe underground reservoir includes the self-permeation recharge system of Wanghe river aquifer and the drainage channel of diversion water through west. Channel self-permeation recharge system, The Y-shaped arrangement is adopted on the plane. Based on this arrangement, a new type of self-permeating recharge well with the highest recharge efficiency is designed to replace the common self-permeating recharge well. (3) numerical simulation of high-efficiency self-permeation recharge system in Wanghe underground reservoir. Firstly, the conceptual model and mathematical model of hydrogeology in the study area were established by using Visual MODFLOW software. Secondly, it is confirmed that the model can reflect the groundwater flow field of Wanghe underground reservoir by identification and verification. Finally, taking the water level of June 1, 2004 as the initial water level, when there are two pumping wells group, three kinds of recharge schemes are given, and only one pumping well group is given two kinds of recharge schemes. The groundwater of Wanghe underground reservoir is forecasted. The prediction results show that the high efficiency self-permeation recharge system composed of the platform dual self-permeation recharge well can make the limited water resources be utilized to a greater extent, make the water level rise obviously in the reservoir area, and the Wanghe underground reservoir can play a better role in regulating the water level. It can be used as a reference for recharge project of similar underground reservoir.
【学位授予单位】：济南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P641.25
本文编号：2306478
[Abstract]:The recharge system is an important part of the water supply project of Wanghe underground reservoir. The self-permeable recharge well used in the recharge system of the Wanghe underground reservoir has some problems such as low recharge efficiency, easy scouring and blockage, etc. It seriously affects the recharge effect and service life of the recharge project. This paper improves and optimizes the structure of the existing self-permeating recharge wells, designs three new dual self-permeable recirculation wells with high efficiency and anti-siltation, and carries out the indoor steady flow recharge test and the theoretical calculation and analysis of the single well recharge quantity. The dual self-permeable recirculation well with the largest recharge amount is selected to form an efficient self-permeating recharge system. Based on the existing self-infiltration recharge system and the high-efficiency self-infiltration recharge system, the groundwater numerical simulation of Wanghe underground reservoir is carried out. The specific research contents and main research results are as follows: (1) the design of a new dual self-permeating recharge well with high efficiency anti-erosion and siltation prevention is carried out to investigate and study the self-permeating recharge well used in Wanghe Underground Reservoir. On the basis of the analysis of various factors affecting the recharge amount of self-permeating recharge well, the circular dual self-permeable recirculation well, the platform dual self-permeating recirculation well and the square dual self-permeable recirculation well are designed. Through laboratory test of new self-permeable recharge well and common self-permeated recirculation well, it is concluded that under the same conditions, the single well recharge rate of three self-permeable recirculation wells is higher than that of common self-permeated recirculation well. In addition, in the three new self-permeable recharge wells, the recharge amount of the dual self-permeation recirculation wells is the largest. It is 5.15 times as much as the single well of ordinary self-permeating recharge well. (2) the high-efficiency self-permeation recharge system of Wanghe underground reservoir includes the self-permeation recharge system of Wanghe river aquifer and the drainage channel of diversion water through west. Channel self-permeation recharge system, The Y-shaped arrangement is adopted on the plane. Based on this arrangement, a new type of self-permeating recharge well with the highest recharge efficiency is designed to replace the common self-permeating recharge well. (3) numerical simulation of high-efficiency self-permeation recharge system in Wanghe underground reservoir. Firstly, the conceptual model and mathematical model of hydrogeology in the study area were established by using Visual MODFLOW software. Secondly, it is confirmed that the model can reflect the groundwater flow field of Wanghe underground reservoir by identification and verification. Finally, taking the water level of June 1, 2004 as the initial water level, when there are two pumping wells group, three kinds of recharge schemes are given, and only one pumping well group is given two kinds of recharge schemes. The groundwater of Wanghe underground reservoir is forecasted. The prediction results show that the high efficiency self-permeation recharge system composed of the platform dual self-permeation recharge well can make the limited water resources be utilized to a greater extent, make the water level rise obviously in the reservoir area, and the Wanghe underground reservoir can play a better role in regulating the water level. It can be used as a reference for recharge project of similar underground reservoir.
【学位授予单位】：济南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P641.25
【参考文献】
相关期刊论文 前1条
1 魏林宏,束龙仓,郝振纯;地下水流数值模拟的研究现状和发展趋势[J];重庆大学学报(自然科学版);2000年S1期
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