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。
本研究經由二維渠槽進行一系列的潰壩流實驗，由於坡地溪床的縱坡約6o~9o，因此實驗除了水平底床的潰壩流實驗以外，也將渠槽裝置一個6o的傾斜底床來進行比較。潰壩流實驗採用五個不同的潰壩高度撞擊垂直平板，分析垂直平板不同高程處的壓力分佈、波前速度以及撞擊高度。實驗結果發現在越接近底床處越容易發生最大壓力，且也有較大的誤差，而傾斜底床測得最大的壓力約為水平底床1.2~1.5倍。裝置傾斜底床後流體波前的瞬時速度會越接近2√gH。流體撞擊垂直平板的高度可以得知壓力是否會有明顯峰值的現象發生，顯示撞擊高度與壓力的形成方式有很大的關係。

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.

1.魏妙珊( 2009 )，「三維海嘯湧潮對近岸結構物之影響」，國立中央大學水文與海洋科學研究所，碩士論文。
2.顏均豪(2014)，「土石流撞擊直立平板之水壓及作用力分析」，國立中央大學土木工程學系，碩士論文。
3.Armanini, A., & Scotton, P. (1992) . Experimental analysis on dynamic impact of a debris flow on structure. 6th INTERPRAEVENT Vol. 6.
4.Armanini, A. (1997) . On the dynamic impact of debris flows. In Recent Developments on Debris Flows, 208-226.
5.Brooks, G.R. and Lawrence, D.E. (1999). The Drainage of the Lake Ha!Ha! Reservoir and Downstream Geomorphic Impacts Along Ha!Ha! River, Saguenay Area, Quebec, Canada. Geomorphology 28(1–2), 141–168.
6.Cagatay, H., Kocaman, S. (2008a). Experimental study of tailwater level effects on dam-break flood wave propagation. River Flow 2008 Cesme, Turkey 1, 635–644.
7.Capart, H. (2000). Dam-Break Induced Geomorphic Flows and the Transition from Solid- to Fluid-Like Behaviour Across Evolving Interfaces. PhD Thesis, Université catholique de Louvain.
8.Cagatay, H., Kocaman, S. (2010). Dam-break flows during initial stage using SWE and RANS approaches. Journal of Hydraulic Research Vol. 48, No. 5 (2010), pp. 603–611.
9.Cumberbatch, E. (1960). The impact of a water wedge on a wall, Jour. Fluid Mech., Vol. 7, pp. 353-373.
10.Cross, R.H. (1966). Water surge forces on coastal structures, Technical Report HEL-9-10, University of California, Berkeley, pp. 1-106.
11.Costa, J.E. and Schuster, R.L. (1988). “The Formation and Failure of Natural Dams”. Bull. Geol. Soc. Am. 100, 1054–1068.
12.Fraccarollo, L. and Capart, H. (2002). RiemannWaveDescription of Erosional Dam-Break Flows. J. Fluid Mech.461, 183–228.
13.Ishikawa, N., Inoue, R., Hayashi, K., Hasegawa, Y., Mizuyama, T. (2008). Experimental approach on Measurement of impulsive fluid force using debris flow model. Interpraevent 2008 – Conference Proceedings, Vol. 1.
14.Ishikawa, N., Inoue, R., Beppu, M., Hasegawa, Y., & Mizuyama, T.(2010) “Dynamic load characteristics of debris flow model usingdifferent gravel size distribution„ Symposium Proceedings of INTERPRAEVENT 2010, 207-216.
15.Janosi, I.M., Dominique, J., Gabor Szabo, K. and Tamas, T. (2004). Turbulent drag reduction in dam-break flows. Experiments in Fluids 37 (2004) 219–229.
16.Lauber, G., Hager, W.H. (1998). Experiments to dam-breakwave: Horizontal channel. J. Hydraulic Res. 36(3),291–308.
17.Lobovsky ́, L., Botia-Vera, E., Castellana, F., Mas-Soler, J (2013). Experimental investigation of dynamic pressure loads during dam break, Journal of Fluids and Structures.
18.Nakamura, S and Tsuchiya, Y (1973). On the Shock Pressure of Surge on a Wall, Bull. Dims. Prey. Res. Inst., Kyoto Univ., Vol. 23, Parts 3-4, No. 212.
19.Nsom, B., Debiane, K., Piau. J. M., (2000). Bed slope effect on the dam break problem, Journal of Hydraulic Research., VOL. 38, NO. 6.
20.Stansby, P. K., Chegini, A., Barnes, T. C. D. (1998) The initial stages of dam-break flow. J. Fluid Mech. (1998), vol. 374, pp. 407-424.
21.Spinewine, B., Zech, Y (2007). Small-scale laboratory dam-break waves on movable beds, Journal of Hydraulic Research Vol. 45 Extra Issue (2007), pp. 73–86.