發(fā)布時(shí)間：2018-10-29 23:00

【摘要】：雙魚島（招商局漳州開發(fā)區(qū)人工島）填海工程是經(jīng)國務(wù)院審批通過的國內(nèi)首個(gè)完全用于旅游、居住和生態(tài)開發(fā)建設(shè)的大型離岸式人工島，與傳統(tǒng)的大面積、平推式圍填海方式所造成的生態(tài)破壞、海洋污染、價(jià)值單一不同，人工島在區(qū)域規(guī)劃中引入水體循環(huán)系統(tǒng)，兩條交相呼應(yīng)的海豚狀平面形態(tài)構(gòu)成了內(nèi)河道親水景觀。人工島內(nèi)河道兩端與外海銜接處設(shè)有閘門，在內(nèi)河道常年保持有清新的內(nèi)河水，，從而構(gòu)成人工島獨(dú)特的河道景觀和環(huán)境保障。為了控制內(nèi)河水位，保證水質(zhì)，需優(yōu)化開啟河道兩端閘門時(shí)機(jī)，利用內(nèi)外水位差進(jìn)行水體的自然交換，使得內(nèi)河水體與外來海水水體摻混充分，將污染物盡可能多的帶出島外，增強(qiáng)人工島內(nèi)河道水體自凈能力。 本文以福建人工島填海工程為例進(jìn)行內(nèi)河道換水計(jì)算研究，利用大型流體力學(xué)計(jì)算軟件FLOW-3D，結(jié)合VOF方法，利用實(shí)際地形數(shù)據(jù)建立了人工島填海工程內(nèi)河道三維幾何模型，根據(jù)已有的外海潮位等水文信息為邊界條件，對(duì)人工島內(nèi)河道水體進(jìn)行了三維非穩(wěn)態(tài)數(shù)值模擬，數(shù)值模擬與物理模型結(jié)果基本一致。在此基礎(chǔ)上進(jìn)行了人工島內(nèi)河道換水的研究，確定內(nèi)河道水位與外海潮位變化的同步性，得到了換水時(shí)間、不同情況下水體交換率和內(nèi)河道水體流態(tài)圖，并推薦了最佳的換水方案。研究方法和結(jié)論對(duì)人工島的建設(shè)和具體管理具有實(shí)用價(jià)值。 本文的研究成果可用于相關(guān)工程，三維數(shù)值模擬可補(bǔ)充物理模型試驗(yàn)的結(jié)果，為人工島內(nèi)河道水體的水力學(xué)特性的研究提供參考，對(duì)工程的實(shí)踐和應(yīng)用有很好的參考價(jià)值，對(duì)類似的工程具有一定的指導(dǎo)作用。
[Abstract]:The Beas Yu Island (artificial Island in Zhangzhou Development Zone of China Merchants Bureau) is the first large offshore artificial island in China that has been approved by the State Council and approved by the State Council for tourism, residential and ecological development. The ecological damage, marine pollution and single value caused by the flat push reclamation are different. The artificial island introduces water circulation system in the regional planning, and two corresponding dolphin plane forms the hydrophilic landscape of the inner channel. The two ends of the artificial island are connected with the open sea and there are gates at the end of the artificial island, and the inner channel keeps fresh and fresh water all the year round, thus constituting the unique river landscape and environmental protection of the artificial island. In order to control the water level of the inland river and ensure the water quality, it is necessary to optimize the opening of the gate at both ends of the river, and make use of the difference of the inside and outside water level to carry out the natural exchange of the water body. Enhance the self-purification ability of river water in artificial island. This paper takes the artificial island reclamation project in Fujian as an example to study the calculation of water exchange in the inner channel. By using the large-scale hydrodynamic calculation software FLOW-3D, and the VOF method, the three-dimensional geometric model of the inner channel of the artificial island reclamation project is established by using the actual topographic data. According to the existing hydrological information such as tidal level in the open sea as the boundary condition, the three-dimensional unsteady numerical simulation of the channel water in artificial island is carried out. The results of the numerical simulation are in good agreement with the physical model. On the basis of this, the water exchange in artificial island is studied, and the synchronism between the water level of the inner channel and the tide level outside the sea is determined, and the water exchange rate and the flow pattern of the inner channel under different conditions are obtained. And recommended the best water exchange scheme. The research methods and conclusions are of practical value for the construction and management of artificial islands. The research results in this paper can be used in related engineering, 3D numerical simulation can supplement the results of physical model test, and provide a reference for the study of hydraulic characteristics of river body in artificial island, which has a good reference value for engineering practice and application. It has certain guiding function for similar projects.
【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)】：TV133

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