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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/68023

    Title: 潰壩流撞擊直立平板之流況分析
    Authors: 凃秉杰;Tu,Bing-jie
    Contributors: 土木工程學系
    Keywords: 潰壩流;湧浪;垂直牆;衝擊壓力;Dam-Break;Surges;Vertical wall;Impact pressure
    Date: 2015-07-29
    Issue Date: 2015-09-23 10:12:44 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 土石流及海嘯的流動過程中都屬於潰壩流的一種,而這些大自然災害破壞力相當巨大,對於人民的財產安全會造成嚴重的損失,而這些損失往往都是難以估計的,因此防範這些大自然的災害就變成重要的課題。
    ;The movement of tsunamis and dam-break flows may cause enormous disasters during their paths due to their significant heights and velocities.
    In this study, the dam-break flows are examined by performing experimental tests, which include dam-break surges on both a horizontal bed and an inclined slope of 6 o . Five different dam heights was arranged, and the pressure distribution on the downstream vertical plate due to the impact of surges are analyzed. The approaching surge velocity and height of flow impact upon the vertical plate were analyzed via the high-speed camera. The maximum pressure on the vertical plate locates close to the channel bed, and the pressure distribution follows an exponentially decay curve instead of a linear profile. The maximum pressures on the tilt bed are about 1.2 to 1.5 times the values of the horizontal bed. The approaching velocity of the surge front is close 2√gH on the tilt bed. The forces acting on the vertical wall can be found by the integration of pressure distribution on the wall, which depicts the same pattern for both the horizontal bed and the tilt bed.
    Appears in Collections:[土木工程研究所] 博碩士論文

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