本文選題：平衡岬灣曲線 + 拋物線模型�。� 參考：《大連理工大學(xué)》2016年碩士論文

【摘要】：目前,沿海地帶成為人類生活的聚集區(qū),同時(shí)也是經(jīng)濟(jì)最為發(fā)達(dá)的區(qū)域,但由于波浪、風(fēng)暴潮、颶風(fēng)等自然天氣的影響和海平面不斷上升的威脅,以及不合理的水工建筑物的影響,世界上的許多海岸正遭受著嚴(yán)重的侵蝕。如何合理有效的保護(hù)海灘是海岸工程研究亟需解決的問題。人工養(yǎng)灘在眾多海灘養(yǎng)護(hù)方法中脫穎而出,它營造出一種自然的補(bǔ)沙環(huán)境,能夠最少的改變海灘的原貌,很好地防止海岸遭到侵蝕,并且不會(huì)對上下游的海洋生態(tài)造成影響,此方法己在歐美等國家得到了廣泛的應(yīng)用。本文首先簡要回顧了靜態(tài)平衡岬灣理論的發(fā)展歷程,從最初的對數(shù)螺線法到如今最為廣泛使用的拋物線公式,然后成功運(yùn)用神經(jīng)網(wǎng)絡(luò)法模擬出更利于實(shí)際操作的靜態(tài)平衡岸線預(yù)測法。經(jīng)驗(yàn)證,此方法比拋物線法在實(shí)際運(yùn)用中操作更簡單,在岬頭處與岸線擬合效果更好,并總結(jié)出此方法的一般操作流程。對于人工養(yǎng)灘的剖面設(shè)計(jì),本文則提出了更適合工程應(yīng)用的施工剖面設(shè)計(jì)法,并在參考國內(nèi)外規(guī)范的基礎(chǔ)上提出了填沙“半衰期”同平均高潮位以上剩余灘肩寬度和平均低潮位以上填沙侵蝕量聯(lián)合指標(biāo)評價(jià)養(yǎng)灘效果的方法。結(jié)合遼寧鲅魚圈月亮灣海灘浴場的整治修復(fù)實(shí)例,本文運(yùn)用神經(jīng)網(wǎng)絡(luò)給出了平面規(guī)劃方案,并與拋物線模型進(jìn)行了對比；運(yùn)用Xbeach數(shù)值模擬方法,根據(jù)本文提出的養(yǎng)灘測評指標(biāo),對剖面設(shè)計(jì)中的灘肩高程、填沙坡度和填沙粒徑進(jìn)行了優(yōu)化,并給出一定的設(shè)計(jì)參考意見。
[Abstract]:At present, coastal zones have become an accumulation of human life and the most economically developed areas, but due to the effects of natural weather such as waves, storm surges and hurricanes, and the threat of rising sea levels, And the impact of unreasonable hydraulic structures, many of the world's shores are suffering serious erosion. How to protect beaches reasonably and effectively is an urgent problem to be solved in coastal engineering research. Artificial beach conservation stands out among many beach conservation methods. It creates a natural rehydration environment that minimizes changes in beach appearance, prevents coastal erosion, and does not affect marine ecosystems upstream and downstream. This method has been widely used in Europe and America. This paper first briefly reviews the development of static equilibrium Cape Bay theory, from the original logarithmic spiral method to the most widely used parabola formula. Then the neural network method is successfully used to simulate the static equilibrium shoreline prediction method which is more convenient for practical operation. It is proved that this method is easier to operate than parabola method in practice, and the fitting effect is better at the head of headland, and the general operation flow of this method is summarized. For the section design of artificial beach, this paper puts forward the construction section design method, which is more suitable for engineering application. On the basis of referring to the domestic and foreign norms, a method for evaluating the effect of beach conservation is put forward on the basis of "half life" of sand filling and the joint index of shoulder width of residual beach above average high tide level and sediment erosion amount above average low tide level. Combined with the example of restoration of Yueliangwan beach bathing site in Bayuquan, Liaoning Province, this paper gives a plan of plane planning by using neural network, and compares it with parabola model, and applies Xbeach numerical simulation method, according to the evaluation index of beach maintenance proposed in this paper. The beach shoulder height, sand filling slope and sand grain size are optimized in section design, and some design suggestions are given.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：U652

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