本文選題：晉祠泉域 + 滲漏量��； 參考：《太原理工大學(xué)》2017年碩士論文

【摘要】：山西省碳酸鹽巖類分布廣泛,約占全省面積的五分之一,沉積的厚度可以達(dá)到千米以上,巖溶水資源蘊藏量豐富。晉祠泉域是山西省內(nèi)19個巖溶泉域之一,泉域范圍內(nèi)的巖溶地下水是太原市工業(yè)、農(nóng)業(yè)和生活用水的重要來源,具有相當(dāng)?shù)馁Y源價值和觀賞價值。多年來,由于大量無計劃的開采巖溶水及采煤排水,使晉祠泉域的供水能力大大削減,導(dǎo)致晉祠泉在20世紀(jì)90年代中期就出現(xiàn)了斷流。晉祠泉是千年古泉,面對千年古泉的斷流,應(yīng)當(dāng)采取措施加強巖溶水資源的合理開發(fā)利用及保護(hù),使晉祠泉早日復(fù)流。因此,研究晉祠泉的復(fù)流方案對泉域巖溶水的保護(hù)有重要意義。目前,關(guān)于晉祠泉域這一區(qū)域的研究有很多,前人大多對晉祠泉域地下水位的影響因素和各個因素對泉域地下水的影響程度做了充分的研究,得出晉祠泉域地下水位的驟減主要受到降水量的減少,人工超采和采煤排水等因素的影響;而關(guān)于泉域的補給,尤其是對汾河上游河道的滲漏量對泉域巖溶地下水影響的研究很少。因此,本文運用數(shù)值模擬方法,研究了汾河上游河道滲漏量的變化對晉祠泉域巖溶地下水位的影響,并指出不同方案下晉祠泉的復(fù)流時間。全文共分為三個部分:第一部分:對晉祠泉域、汾河滲漏段的基本概況,地質(zhì)條件,水文地質(zhì)條件等進(jìn)行了深入分析;第二部分:根據(jù)汾河上游水文測站的徑流量資料,利用上游來水量與漏失系數(shù)之間的規(guī)律,對汾河上游河道的多年滲漏量進(jìn)行了計算;第三部分:基于Visual MODFLOW建立地下水流模型,通過改變模型中汾河河道的滲漏量的大小,探討了其對泉域地下水位的影響。研究結(jié)果表明,汾河滲漏量的增加對晉祠泉域巖溶地下水位回升起積極作用,且滲漏量越大,水位回升越快,泉水復(fù)流的時間越早。因此,可以通過加大汾河滲漏補給這一手段實現(xiàn)晉祠泉的復(fù)流。這項研究為晉祠泉的復(fù)流和巖溶地下水的保護(hù)提供了參考依據(jù)。
[Abstract]:Carbonate rocks are widely distributed in Shanxi Province, accounting for about 1/5 of the province area. The thickness of the deposits can reach more than km, and the karst water resources are abundant. Jinci spring region is one of 19 karst spring regions in Shanxi Province. Karst groundwater in spring area is an important source of industrial, agricultural and domestic water in Taiyuan, which has considerable resource value and ornamental value. For many years, the capacity of water supply in Jinci Spring region has been greatly reduced because of a large amount of unplanned karst water and coal mining drainage, which led to the breakage of Jinci Spring in the middle of 1990s. Jinci spring is a thousand years old spring. In the face of the flow breakage of thousand years old spring, measures should be taken to strengthen the rational development, utilization and protection of karst water resources so as to make Jinci spring reflow as soon as possible. Therefore, it is of great significance to study the reflow scheme of Jinci spring for the protection of karst water in spring region. At present, there is a lot of research on this area of Jinci Spring region. Most of the predecessors have made sufficient research on the influencing factors of groundwater level in Jinci Spring region and the influence degree of each factor on the groundwater level in Jinci Spring region. It is concluded that the sudden decrease of groundwater level in Jinci spring area is mainly affected by the decrease of precipitation, artificial overmining and coal mining drainage, etc. Especially, there is little research on the effect of river leakage on karst groundwater in the upper reaches of Fenhe River. Therefore, in this paper, numerical simulation method is used to study the influence of the leakage of upper reaches of Fenhe River on the karst groundwater level in Jinci Spring region, and the reflow time of Jinci Spring under different schemes is pointed out. The paper is divided into three parts: the first part: the basic situation, geological conditions, hydrogeological conditions and so on of the Jinci spring area, the Fenhe seepage section, etc. The second part: according to the runoff data of the hydrological station in the upper reaches of Fenhe River, By using the law between upstream water quantity and leakage coefficient, the leakage amount of the upper reaches of Fenhe River is calculated. The third part: the groundwater flow model is established based on Visual MODFLOW, and the leakage amount of Fenhe river is changed by changing the quantity of leakage in the model. Its influence on groundwater level in spring region is discussed. The results show that the increase of the leakage of Fenhe River plays a positive role in the recovery of karst groundwater level in Jinci spring area, and the larger the leakage amount, the faster the water level rises and the earlier the spring water reflows. Therefore, we can increase the leakage of Fenhe recharge this means to achieve the return of Jinci spring. This study provides a reference for the reflow of Jinci spring and the protection of karst groundwater.
【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：P641.134

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本文編號：1941348