Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/89442
標題: Study on Characteristics of Sand Fixation in Coastal Areas - A Case Study of Yunlin Mailiao
濱海地區堆砂特性之探討 - 以雲林麥寮為例
作者: 秦宇正
Yu-Jeng Chin
關鍵字: 風洞;堆砂;堤防;PM10;wind tunnel;sand fixation;embankment;PM10
引用: 江永哲、游繁結、蕭飛賓、方富民、黃隆明(1992),彰化濱海工業區防風設施之風洞測試研究報告。國立中興大學水土保持學系。 林壯沛(1979),不同攔沙構造物防治飛沙功效之比較試驗。國立中興大學水土保持學系碩士論文。 朱佳仁(2006),風工程概論。初版。臺北市:科技圖書。 行政院農業委員會水土保持局、中華水土保持學會(2005)水土保持手冊:工-2-32頁。 行政院農業委員會林務局 (2014),林業統計電子書。 李霽修(2012),防風林配置對定砂效果之風洞試驗研究。國立中興大學水土保持學系碩士論文。 吳正(1965),「新疆和田地區沙土及土壤風蝕的初步研究」,中國地理學會地貌學術討論會:P.125~127。 邱?芳(1987),海岸防風林與防風牆之防風防塩功效比較實驗。國立中興大學水土保持學系碩士論文。 張台聖(2012),FDM應用於烏溪揚塵推估之探討。國立中興大學水土保持學系碩士論文。 郭鴻裕、劉滄棼、朱戟良、江志峰(2005),台南區農業改良場技術專刊第132期,P.3~P.23。 黃隆明(1997),不透風式構造物之防風功效研究。國立中興大學水土保持學系博士論文。 游繁結(1989),「濁水溪河口飛砂量之調查與研究」,農林學報38(1):75~104。 趙彥勳(2014),海堤對堆砂功效之研究。國立中興大學水土保持學系碩士論文。 蔡明華(1972),「崎頂海岸沙丘地土壤物理及化學性測定研究」,砂丘利用第73期第三號。 蘇福來(1980),「定砂對策工程」,河海工程,第十二期,P.11~P.16。 Armitt, J. and J. Counihan. (1968), The simulation of the atmospheric boundary layer in a wind tunnel. Atmospheric Environment 2(1): 49-71. Bagnold, R.A. (1954) , The Physics of blown sand and desert dunes. London: Chapman and Hall. pp. 38-56. Biggs, J.M. (1954) , Wind load on truss bridges. ASCE 119(1): 879 Blanco H., R. Lal. (2008), Principles of Soil Conservation and Management, Springer Science+Business Media B.V. pp. 55-80. Counihan, J. (1975), Adiabatic atmospheric boundary layers: A review and analysis of data from the period 1880–1972. Atmospheric Environment 9(10): 871-905. D.J. Cockrell and S.E. Lee (1964), Methods and Consequences of Atmospheric Boundary Layer Simulation. Paper 13-AGARD Conference Proceesings No. 48 on Aerodynamics of Atmospheric Shear Flow, Munich. Dong Zhibao. (2007), Characterizing the Height Profile of the Flux of Wind-eroded Sediment. Environment Geology 51 (5), pp. 835~845. Hunt, J.C.R., and Simpson, J.E. (1982), Atmospheric Boundary Layer Over Non-Homogeneous terrain. Chapter 7, pp. 281~283. Langhaar, H.L. (1951), Dimensional Analysis and Theory of Models. John Wiley & Sons Ltd; y First edition edition (December 1951) Prandtl, L. (1925), Uber die ausgebildete Turbulenz. ZAMM 5, pp. 136-139. Simiu, E. and R.H. Scanlan (1986). Wind Effects on Structures. New York: John Wiley & Sons, Inc. pp. 39-52. Standen, N.M. (1972), A spire array for generating thick turbulent shear layers for natural wind simulation in wind tunnels. Rep. LTR-LA-94, National Aeronautical Establishment, Ottawa, Canada. Wooding, R. A. (1968), A low-speed wind tunnel for model studies in micrometeorology. I., General design considerations. II. The Pye Laboratory wind tunnel.
摘要: 
本研究為瞭解濱海地區之堆砂特性,選定雲林麥寮為試區,並將採樣點分為垂直季風方向(西北堤濱海區)及水平季風方向(木麻黃防風林區)兩部分,分析試區砂粒之含水率、顆粒密度、粒徑、pH值及安息角。同時以濱海地區定砂構造物之一的土堤為研究對象,利用風洞試驗以8 m/s、10 m/s及12 m/s三種不同風速,探討設置土堤後飛砂堆積與PM10濃度的變化。將量測到的堆砂高程資訊,彙整後利用Surfer軟體繪製出3D地形圖,並計算堆砂體積變化,再利用TSI DustTrak粉塵計量測不同水平斷面各高程之PM10濃度。
試驗區域垂置季風方向與水平季風方向砂粒之平均含水率分別為6.80 %及5.80 %,顆粒密度為2.68g-cm-3與2.63 g-cm-3,質地皆為砂土,pH值為7.74與7.28。,砂粒安息角為33.2度與3.46度。當採樣點沿地表水平移動時各性質的變化並不顯著;而採樣深度加深時,垂置季風方向砂粒之含水率、顆粒密度增加,pH值下降;水平季風方向砂粒之顆粒密度減少,pH值上升。
由風洞試驗得知,設置土堤後對飛砂有良好的抑制效果,但保護效果隨風速上升而減弱。無設置土堤時PM10濃度隨高度上升而下降,設置土堤後在高程2.5 H至3.5 H區間量測到PM10濃度最大值(H為土堤模型高)。設置土堤會在後方產生揚塵抑制區域,抑制區域高度隨距離增加而降低。當風速自8 m/s增加至12 m/s時,有無土堤模型所量測到的PM10濃度皆上升,但於較低風速時設置土堤前後PM10濃度變化百分比會較高風速時為高。

The objective of this study focuses on the characteristics of sand fixation in the coastal area. Choosing Yunlin Mailiao for the test area and dividing into two parts the vertical direction of north-east monsoon (the coastal area near to the northwest of embankment) and the parallel direction of north-east monsoon (the casuarina windbreaks) compared the water ratio , particle density , particle size , pH value and angle of repose. Creating the data for the characteristics of sand fixation in that area. Then, selecting the embankment, one of the sand-fixed structures, as the object of study. It's simulated by wind tunnel about three types of wind speed 8 m/s, 10 m/s and 12 m/s to observe the change of the sand fixation and the PM10 of density after setting the embankment. Using Surfer to draw topographic map and calculate volume change of the sand fixation after aggregating the elevation data of the sand fixation. And then, measuring the density of PM10 for the difference of elevation by TSI DustTrak.
The water ratio of sand in the coastal area vertical and parallel direction of monsoon are 6.80% and 5.80%, particle density is 26.77g-cm-3 and 26.25g-cm-3, both of they are sand, the pH value is 7.74 and 7.28, the angle of repose is 33.1 and 34.6. The property changed unapparent when the sampling location moved by horizontal way, however, when the depth increase, both of the water ratio of sand and the particle density increase, but the pH value decrease in the coastal area vertical direction of monsoon. The particle density decrease and the pH value increase in the parallel direction of monsoon.
By way of wind tunnel experiment, setting embankment. have good effect of Sand Fixation, and the effect of protection decrease as wind speed increase. The PM10 decrease as altitude increase, There is maxima PM10 value on the altitude from 2.5H to 3.5H by setting embankment(H is height of model). And it will create area of dust control behind embankment, area of control's altitude height reduce when distance increase. When wind speed increase from 8 m/s to 12m/s, the PM10 value all increase no matter setting embankment or not, however ,percentage of variation of PM10 between setting or not setting embankment. in low wind speed is higher then high wind speed.
URI: http://hdl.handle.net/11455/89442
其他識別: U0005-2508201510221000
Rights: 同意授權瀏覽/列印電子全文服務,2017-08-28起公開。
Appears in Collections:水土保持學系

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