本文選題：萊州灣 + SEAWAT��； 參考：《中國(guó)地質(zhì)大學(xué)(北京)》2015年碩士論文

【摘要】：地下水資源是經(jīng)濟(jì)社會(huì)可持續(xù)發(fā)展的重要自然資源,已經(jīng)成為當(dāng)今學(xué)術(shù)界的一個(gè)研究熱點(diǎn)。昌邑市位于山東省萊州灣南岸,由于過(guò)量開(kāi)采地下淡水資源和深層鹵水資源,在研究區(qū)內(nèi)已經(jīng)形成了淡水漏斗和鹵水漏斗,因此海(咸)水不斷的向內(nèi)陸入侵,這里是我國(guó)海(咸)水入侵研究的典型區(qū)域。海(咸)水入侵不僅造成地下淡水咸化,使區(qū)域淡水資源可利用量減少,同時(shí)也使地區(qū)環(huán)境的承載力持續(xù)降低。海水入侵現(xiàn)象的本質(zhì)是沿海地區(qū)咸淡水界面處的靜水壓力遭到破壞,海水順著含水層入侵內(nèi)陸的現(xiàn)象。海水的向陸移動(dòng)會(huì)使內(nèi)陸土壤鹽漬化,也破壞了內(nèi)陸淡水水源地,同時(shí)也給當(dāng)?shù)鼐用駧?lái)了生活上的困難和經(jīng)濟(jì)上的損失。海水入侵現(xiàn)象如果發(fā)生,通常情況下會(huì)經(jīng)歷初始、加劇、減緩這三個(gè)階段,這種現(xiàn)象的發(fā)生也需要具備兩個(gè)先決條件,就是水動(dòng)力條件和水文地質(zhì)條件。在充分搜集研究區(qū)已有水文地質(zhì)及其相關(guān)資料基礎(chǔ)上,查明研究區(qū)水文地質(zhì)條件并將其概化為含水層組;利用地下水?dāng)?shù)值模擬軟件SEAWAT建立其2013.1.1~2013.12.31時(shí)段的地下水流數(shù)值模型;采用試估—校正法對(duì)模型識(shí)別校正;并利用2014.1.1~2014.4.31時(shí)段的源匯項(xiàng)對(duì)識(shí)別后的水文地質(zhì)結(jié)構(gòu)、參數(shù)及邊界類(lèi)型進(jìn)行驗(yàn)證。以識(shí)別和驗(yàn)證后的水文地質(zhì)結(jié)構(gòu)、參數(shù)及邊界類(lèi)型為基礎(chǔ),引入預(yù)測(cè)期源匯項(xiàng)后,又建立了水源地2014.1.1~2021.12.31時(shí)段的預(yù)測(cè)模型。利用預(yù)測(cè)模型求得模擬區(qū)多年平均年補(bǔ)給量為34309×104kg/a,多年平均排泄量為33936×104kg/a。模型模擬末2021.12.31,3g/l的礦化度線以約400m/a速率向陸推移,淺層淡水咸化速度快,嚴(yán)重影響了農(nóng)業(yè)和生活用水量。
[Abstract]:As an important natural resource for sustainable development of economy and society, groundwater resources have become a research hotspot in the academic circle. Changyi city is located on the South Bank of Laizhou Bay in Shandong province. Due to overexploitation of underground fresh water resources and deep brine resources, a light water funnel and a brine funnel have been formed in the study area. Therefore, the sea (salty) water is constantly being developed. The invasion of the sea (salty) water in China is a typical area. The sea (salty) water intrusion not only causes the salinity of the underground water, but also reduces the amount of fresh water resources in the region. At the same time, the carrying capacity of the regional environment is continuously reduced. The essence of the seawater intrusion phenomenon is that the hydrostatic pressure at the salt and freshwater interface in the Haiti area is destroyed. The movement of water along the aquifer invaded the inland. The land movement of the sea water will make inland soil salinized, and it also destroys the inland water source. It also brings the local residents with the difficulties in life and the economic loss. If the seawater intrusion occurs, it will usually begin, aggravate and slow down these three stages. It also needs two prerequisites, namely, hydrodynamic conditions and hydrogeological conditions. On the basis of fully collecting hydrogeology and related data in the study area, the hydrogeological conditions of the study area are ascertained and generalized into aquifer group, and the ground water numerical simulation software SEAWAT is used to establish its 2013.1.1~2013.12.31 period. The water flow numerical model is used to verify the model recognition and correction by using the test correction method. The hydrogeological structure, parameters and boundary types are verified by the source and sink of the 2014.1.1~2014.4.31 period. The hydrogeological structure, parameters and boundary types are identified and verified, and the water and sink terms are introduced, and the water is also established. The prediction model of the 2014.1.1~2021.12.31 period in the source area is used to obtain the annual average annual recharge of 34309 x 104kg/a in the simulated area, and the average annual excretion of 33936 x 104kg/a. model simulation end 2021.12.31,3g/l mineralization line is about 400m/a rate to land, and the shallow fresh water saltization speed is fast, which seriously affects agricultural and living use. Water.
【學(xué)位授予單位】：中國(guó)地質(zhì)大學(xué)(北京)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：P731.2;P641.8

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本文編號(hào)：1925267