【摘要】：在新疆沙漠段多沙河流治理與防洪工程中，傳統(tǒng)的護(hù)岸建筑物已經(jīng)不能滿足新時(shí)期護(hù)岸的要求，研究更安全、更經(jīng)濟(jì)、更有效、更親水的新型護(hù)岸建筑物，已經(jīng)成為一項(xiàng)緊迫任務(wù)。與此同時(shí)，透水丁壩理論和水力插板技術(shù)在國內(nèi)得到了迅速的發(fā)展，本文首次將兩者有效結(jié)合，，提出一種新型透水護(hù)岸建筑物—水力插板透水丁壩。水力插板透水丁壩不僅能調(diào)水調(diào)沙，穩(wěn)定河勢，起到護(hù)岸的作用，而且能達(dá)到堤岸安全、施工快速、工程投資少的目的。水力插板透水丁壩數(shù)值模擬研究，可與物理模型研究相互驗(yàn)證、補(bǔ)充，為這項(xiàng)新技術(shù)在新疆塔里木河流域粉細(xì)砂地層河道治理與防洪工程中的應(yīng)用提供理論依據(jù)。 本文對水力插板技術(shù)的研究、透水丁壩結(jié)構(gòu)及特性的研究以及透水丁壩的紊流數(shù)值模擬的研究進(jìn)行了詳盡的回顧和評述。在前人研究成果的基礎(chǔ)上，建立了水力插板透水丁壩水流概化模型，并驗(yàn)證了模型的正確性。利用數(shù)值模擬的計(jì)算方法，通過與實(shí)體丁壩、井柱樁透水丁壩的對比計(jì)算，證明了水力插板透水丁壩具有調(diào)水調(diào)沙、緩流促淤的護(hù)岸效果。運(yùn)用流體力學(xué)等理論方法和數(shù)值模擬方法，分別模擬不同的透水孔型式和布置方式下的水流結(jié)構(gòu)、流速場，最終選出有利于緩流促淤、保灘護(hù)岸的透水孔結(jié)構(gòu)型式。通過數(shù)值模擬的方法，以水流對壩體的不利影響最小和水力插板透水丁壩緩流促淤的防護(hù)效果最好兩方面作為評定原則，確定水力插板透水丁壩透水率、有效壩長、挑角、流速等關(guān)鍵水力學(xué)參數(shù)的合理取值范圍。
[Abstract]:In the flood control and flood control projects of sandy rivers in the desert section of Xinjiang, the traditional revetment buildings can no longer meet the requirements of bank protection in the new period, and study new types of revetment buildings that are safer, more economical, more effective and more hydrophilic. Has become an urgent task. At the same time, the theory of permeable spur dike and hydraulic plug board technology have been developed rapidly in our country. In this paper, a new type of permeable embankment building, hydraulic plug plate dike, is put forward by combining them effectively for the first time. Hydraulic plug plate permeable groin can not only transfer water and sand, stabilize river regime and protect bank, but also achieve the purpose of bank safety, fast construction and less project investment. The numerical simulation of hydraulic plug plate permeable spur dike can be verified and supplemented with physical model research, which provides a theoretical basis for the application of this new technology in the river course control and flood control engineering of silt formation in Tarim River Basin, Xinjiang. In this paper, the research of hydraulic plug plate technology, the structure and characteristics of permeable spur dike and the numerical simulation of turbulent flow of permeable spur dike are reviewed and reviewed in detail. Based on the previous research results, a generalizable model of hydraulic plug plate permeable spur dike flow is established, and the correctness of the model is verified. By using the method of numerical simulation and comparing with the solid dike and pile dike, it is proved that the hydraulic plug dimple dike has the effect of water and sediment regulation, slow flow and siltation. In this paper, hydrodynamics and numerical simulation methods are used to simulate the flow structure and velocity field under different permeable hole types and arrangement modes respectively. Finally, the structure types of permeable holes which are favorable to slow flow and siltation and bank protection are selected. By means of numerical simulation, taking the minimum adverse effect of water flow on the dam body and the best two aspects of the protective effect of hydraulic plug plate permeable groin dam as evaluation principles, the permeability rate, effective dam length and angle of penetration of hydraulic plug plate spur dike are determined. Reasonable range of hydraulic parameters such as velocity.
【學(xué)位授予單位】：新疆農(nóng)業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TV863

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