本文關(guān)鍵詞： 圍填海工程 沿岸海區(qū) 數(shù)學(xué)模型 潮位 海域規(guī)劃　出處：《天津大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著經(jīng)濟(jì)的發(fā)展,沿海土地資源日趨緊張,圍填海開發(fā)已經(jīng)成為沿海城市建設(shè)中的熱點(diǎn),因此,分析圍填海工程造成的影響很有必要,對(duì)沿海海域規(guī)劃具有重要指導(dǎo)作用。本文運(yùn)用數(shù)學(xué)模型的方法對(duì)渤海海域圍填海工程帶來的影響進(jìn)行研究探討,其模型為具有自主知識(shí)產(chǎn)權(quán)的天津大學(xué)水流泥沙數(shù)學(xué)模型軟件。本文按照“從海灣內(nèi)海域到海灣外海域”的順序進(jìn)行分析,灣內(nèi)海域包括三大海灣(渤海灣、萊州灣、遼東灣),灣外海域指的是渤海海域三大海灣以外的其他海域,研究?jī)?nèi)容包括相關(guān)海域的潮位變化和潮流運(yùn)動(dòng)特性變化。研究發(fā)現(xiàn),在外海來潮量一定的條件下,大規(guī)模圍海造陸后,渤海灣海區(qū)的潮位最高值明顯增大,并且在越靠近灣口的海區(qū),潮位上升值越小;反之,潮位上升值越大;2010年萊州灣潮位漲落幅度與2004年的相比,潮位漲落幅度增大,但其增大值遠(yuǎn)小于渤海灣的最高潮位增大值,因此可以認(rèn)為,圍海后,萊州灣海域的最高潮位有些許上升;圍填海工程使得遼東灣海域的最高潮位升高,尤其是近陸域的海區(qū),水位上升的現(xiàn)象明顯。在對(duì)相關(guān)海域的潮流運(yùn)動(dòng)特性變化的研究中發(fā)現(xiàn),大規(guī)模圍海后,渤海灣和萊州灣的流速增大,且增大值由灣內(nèi)海域向?yàn)惩夂Ｓ蛑饾u變大;遼東灣海域遼闊,流速變化比另兩個(gè)海灣復(fù)雜,流速變化值從灣內(nèi)向?yàn)惩庵饾u由負(fù)值增大到正值,離灣口海區(qū)越近的區(qū)域,流速增大越多,離灣口海區(qū)越遠(yuǎn)的區(qū)域,流速減小也越多。三大海灣的潮流流向改變值由灣內(nèi)海域向?yàn)惩夂Ｓ蛑饾u減小,即,離灣口越遠(yuǎn)的海域,潮流流向變化越大;反之,離灣口越近的海域,潮流流向變化越小。最后,從渤海三大海灣灣外海域的流速與流向的對(duì)比研究中發(fā)現(xiàn),其流速和流向的變化規(guī)律既符合外海來潮一定的條件,也與三大海灣的潮流運(yùn)動(dòng)變化分析結(jié)果相呼應(yīng)。
[Abstract]:With the development of economy, coastal land resources are becoming increasingly tight. Reclamation has become a hot spot in coastal city construction. Therefore, it is necessary to analyze the impact of reclamation. This paper uses the mathematical model method to study the influence of the reclamation project in the Bohai Sea area. The model is a mathematical model software of Tianjin University with independent intellectual property rights. This paper analyzes the sequence of "from the inside bay to the outside sea area", which includes three big bays (Bohai Bay, Laizhou Bay). The area outside the Liaodong Bay refers to other sea areas outside the three major bays of the Bohai Sea. The contents of the research include changes in the tidal level and the characteristics of tidal current movement in the relevant sea areas. The study found that under the condition of a certain amount of incoming tides outside the sea, After large-scale reclamation, the maximum tide level in the Bohai Bay area increases obviously, and the higher the tidal level in the area near the mouth of the bay, the smaller the rising value of the tidal level, whereas, the greater the rise value of the tidal level in the Laizhou Bay on 2010, the higher the range of the tidal level fluctuation in Laizhou Bay on 2010 compared with that in 2004. The range of tidal level fluctuation is increasing, but its increasing value is much smaller than the maximum tide level increase value of Bohai Bay. Therefore, it can be concluded that the maximum tide level in Laizhou Bay increases slightly after reclamations, and reclamation works make the maximum tide level rise in Liaodong Bay. Especially in the sea area near the land, the phenomenon of rising water level is obvious. In the study of the characteristic change of tidal current movement in the relevant sea area, it is found that the velocity of the Bohai Bay and the Laizhou Bay increases after the large-scale sea closure. And the increasing value gradually increased from the inside bay to the outside sea area, the Liaodong Bay sea area is vast, the velocity change is more complex than the other two bay, the velocity change value gradually increases from the negative value to the positive value outside the bay inward bay, the area closer to the bay mouth sea area, The more the velocity increases, the more the velocity decreases in the area farther away from the mouth of the bay. The change value of tidal current direction of the three major bays gradually decreases from the inside of the bay to the outside of the bay, that is, the farther from the mouth of the bay, the greater the direction of the tidal current changes; conversely, The closer it is to the mouth of the bay, the smaller the change of tidal current direction is. Finally, from the comparative study of the velocity and direction of the sea area outside the three big Gulf Bay of the Bohai Sea, it is found that the variation law of the velocity and direction of the current conforms to the certain conditions of the coming tide outside the sea. It is also consistent with the analysis results of tidal current movement in the three major bays.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：P75;P731.23

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