【摘要】：回灌系統(tǒng)是王河地下水庫供水工程中重要的一部分,王河地下水庫回灌系統(tǒng)中使用的自滲回灌井存在著回灌效率低、易沖刷和淤堵等問題,嚴重影響了回灌工程的回灌效果和使用壽命。本文對現(xiàn)有自滲回灌井進行了結(jié)構改進和優(yōu)化,設計出三種新型對偶式高效抗沖防淤型自滲回灌井,并進行了室內(nèi)穩(wěn)定流回灌試驗和單井回灌量的理論計算分析,選擇其中回灌量最大的對偶式自滲回灌井,形成高效自滲回灌系統(tǒng);并基于現(xiàn)有的普通自滲回灌系統(tǒng)和高效自滲回灌系統(tǒng),對王河地下水庫進行了地下水數(shù)值模擬研究,具體研究內(nèi)容和主要研究成果如下:(1)新型對偶式高效抗沖防淤型自滲回灌井設計對王河地下水庫使用的的自滲回灌井進行調(diào)查研究,在分析影響自滲回灌井回灌量的各種因素基礎上,設計出圓形對偶式自滲回灌井、臺形對偶式自滲回灌井和方形對偶式自滲回灌井。通過新型自滲回灌井和普通自滲回灌井進行室內(nèi)試驗結(jié)果得出:在相同條件下,三種自滲回灌井單井回灌量均大于普通自滲回灌井單井回灌量,且三種新型自滲回灌井中臺形對偶式自滲回灌井的回灌量最大,為普通自滲回灌井單井回灌量的5.15倍。(2)王河地下水庫高效自滲回灌系統(tǒng)王河地下水庫回灌系統(tǒng)包括王河河道含水層自滲回灌系統(tǒng)和過西引水回灌渠渠道自滲回灌系統(tǒng),在平面上采用Y字形布置方式�；谶@種布置方式,利用設計的回灌效率最高的新型自滲回灌井代替原有的普通自滲回灌井,可形成高效自滲回灌系統(tǒng)。(3)王河地下水庫地高效自滲回灌系統(tǒng)數(shù)值模擬利用Visual MODFLOW軟件,首先建立了研究區(qū)水文地質(zhì)概念模型和數(shù)學模型;其次通過識別驗證確定該模型能夠真實反映王河地下水庫的地下水流場;最后以2004年6月1日的水位作為調(diào)算的初始水位,當有兩個抽水井群時給出三種回灌方案,只有一個抽水井群時給出兩種回灌方案,對王河地下水庫地下水進行預測,預測結(jié)果得出:由臺形對偶式自滲回灌井組成的高效自滲回灌系統(tǒng)能夠使有限的水資源得到更大限度地利用,使庫區(qū)水位上升明顯,王河地下水庫能夠更好的發(fā)揮調(diào)節(jié)作用�？蔀轭愃频叵滤畮旎毓喙こ虆⒖际褂�。
[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.
【學位授予單位】：濟南大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P641.25

【參考文獻】

相關期刊論文 前1條

1 魏林宏,束龍倉,郝振純;地下水流數(shù)值模擬的研究現(xiàn)狀和發(fā)展趨勢[J];重慶大學學報(自然科學版);2000年S1期

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本文編號：2306478