賴進松2006-08-232018-07-092006-08-232018-07-092005http://ntur.lib.ntu.edu.tw//handle/246246/29385台灣因其地理與氣候條件特殊，河川短促，降雨量之分佈不均，集中於夏秋兩季，並且常遭颱風或豪雨之侵襲，造成嚴重之水災。近年來由於都會區人口密度增加，土地需求殷切，故河川沿岸地勢低漥之邊際土地多被開發利用，相對地洪水發生時所可能造成災害之機會則大幅提高。而且近年國內外之社群參與及環保意識日漸提昇，公共建設必須經由良好之溝通協商過程，始可順利推展。利用立體互動式虛擬實境(3D/VR)的技術，展現立體之地形地貌，可大幅提升視覺效果。然而在洪氾淹水之數據模擬結果，無法利用目前虛擬實境軟體已有之功能來即時結合3D 地形地貌之場景，而僅能利用＂繪圖＂之方式將淹水圖片貼上，不能即時結合3D 地形地貌之虛擬實境場景，來呈現淹水境況，而無法在防災系統中洪水預警預報模擬中，進行立即之運算展示;若僅用目前之虛擬實境技術，在防災預警報系統中從降雨、逕流、河道中之洪水演算，進而潰溢堤後洪水在洪氾區中運行淹水之範圍與深度，則無法即時呈現於模擬區域中，直接提供決策支援所亟需之資料。本計畫將利用虛擬實境軟體工具，開發出一套結合水理數值模式(洪氾淹水模式)、數值地形高程(DEM)及立體航照圖的展示軟體與介面，立即呈現河川流域洪災發生時的洪氾淹水景況，確實對支援防救災決策層級能提供其更精確的判斷並有效地縮短其反應的時間，即使是不同政府機關或是不同專門領域的人，也能透過立即呈現洪氾淹水的虛擬實境場景，淺顯易懂的了解洪災影響的區域與範圍。Influenced by natural and human factors such as climate changes and global warming, the climate seems presenting unusual phenomenon, which may cause severe flooding. Due to growing population in Taiwan, the floodplain has been widely developed by building levees to confine the river flow, especially near the metropolitan areas. The construction of levee around the urban area prevents the damages from flooding. However, the levee built on the floodplain reduces the river cross sections which may originally be large enough to allow the passage of the flood. The water stage in the river can easily rise due to the cross section constriction and to create dangerous situations. To construct a computer-generated world with three-dimensional environments, the technologies of virtual reality involve real-time computer graphics, color displays and simulation software. The three-dimensional virtual reality (3D/VR) environments reshape the interface between people and information technology by offering new ways for the visualization of processes, the communication of information and the creative expression of ideas. The constructed virtual environment containing real-world systems like buildings, bridges, landscapes, motion of the water can represent any 3D world. By using a 3D/VR engine Virtools is employed to edit, select or manipulate 3D models. This proposal for the study is to combine the flood inundation model and the 3D topographical environments by using virtual reality techniques for real-time display.application/pdf1829643 bytesapplication/pdfzh-TW國立臺灣大學水工試驗所洪氾淹水模式虛擬實境數值地形高程flood inundation modelVirtual reality[SDGs]SDG13reporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/29385/1/932622E002022CC3.pdf