現今在堤岸保護上常常施作一系列丁壩群為主，利用霸間之泥沙堆積來保護堤岸，但壞處是必須設置多個丁壩才能發會效果，另一方面，在丁壩壩頭受到水流直接衝擊，容易形成較深的沖刷坑，而造成丁壩的損壞。本文則是使用筐網群樁取代丁壩群的功效並改善丁壩群的缺點。
本文主要探討筐網群樁之沖刷、淤積現象，藉由實驗改變筐網群樁與水流夾角、筐網與筐網設置間距後決定最佳設置角度、間距，接著試驗將筐網群樁抬升底床與筐網群樁潛沒水面，並作一系列的討論： (1)最大沖刷、淤積位置、(2)沖刷帶位置與水流交角、(3)最大沖刷深度、淤積高度、(4)最大沖刷、淤積位置斷面。
根據上述討論的結果得知，筐網群樁與水流最佳夾角為30度而最佳筐網間距為2倍筐網直徑距離，筐網群樁於無抬升高度與非潛沒水面之試驗具有最好的導流效果且最大沖刷、淤積總和也是最大的，有助於洪水通過筐網群樁時往沖刷帶切入以達到保護筐網群樁下游淤積區之功效。

Nowadays, we often build a series of spur dike groups for the embankment security, and use silt of the deposit between spur dikes to protect the embankment, but disadvantage is that several spur dike groups have to be build for bringing the best effects. Besides, due to the flow that impact on a head of the spur dike, the deeper scouring hole will be formed there easily, and the damage of the spur dike would also caused. In this article, we replaced effects of the spur dike groups with the efficacy of the in-line Porous Basket groups and improved defects of the spur dike groups.
In the following, we will focus on an observation of scour and deposit of Porous Basket groups. In the experiment, we changed an included angle of porous basket groups and flow, the interval between the two Porous baskets, then the best set up angle and interval was decided. Next, we tested to have Porous Basket groups raising to the bed and submerging under the water surface. Furthermore, we performed an series of discussions about: (1) position of maximum scouring and depositing, (2) an included angle of the scouring Belt and flow, (3) the magnitude of the maximum scouring and depositing, (4) the section of position of maximum scouring and depositing.
From what has been discussed above, we can conclusion that the best set up angle and interval was 30∘, 2 times diameter of the Porous Basket, respectively. From the experiments, Porous Basket groups have the best diversion effect, maximum scouring and depositing total magnitude which having no raising height and no submergence under the water surface. It could be benefited on protecting downstream of Porous Basket groups when the flood through Porous Basket groups flow toward the scouring Belt.

1.吳健民 (1991)，「泥沙運移學」，中國土木水利工程學會。
2.吳虹邑 (2005)，「筐網結構物對橋墩沖刷保護之研究」，國立成功大學水利及海洋工程研究所碩士論文。
3.易任、王如意 (1979)，「應用水文學」，國立編譯館。
4.林達志 (2003)，「潛沒式跌水坑對橋墩沖刷影響暨保護工法之初步研究」，國立成功大學水利及海洋工程研究所碩士論文。
5.施國欽 (2005)，「大地工程學(一)土壤力學篇」。
6.洪澤仁 (2006)，「水舌導流工對自由跌水沖刷保護之研究」，國立成功大學水利及海工程研究所碩士論文。
7.莊智盛 (2004)，「成功人工水草對自由跌水下游橋墩沖刷保護之研究」，國立成功大學水利及海洋工程研究所碩士論文。
8.張忠潔 (2002)，「跌水沖刷與橋墩沖刷互動關係試驗之研究」，國立成功大學水利及海洋工程研究所碩士論文。
9.陳志弘 (2003)，「圓形渠道之單柱與雙柱之沖刷試驗」，國立成功大學水利及海洋工程研究所碩士論文。
10.許時雄 (2003)，「治河防洪 (與) 海岸防護」，科技圖書。
11.陳右典 (2005)，「成功人工水草對彎道橋墩沖刷保護之研究」，國立成功大學水利及海洋工程研究所碩士論文。
12.黃偉哲 (2001)，「水流通過透水式橋墩保護工之流況分析」，國立成功大學水利及海洋工程研究所碩士論文。
13.黃進坤 (2005)，「沖積河川上課講義」，成功大學水利所。
14.黃進坤 (2006)，「橋墩保護新工法之研究」，台灣公路工程，第32卷第8期，pp.39-44。
15.傅家揚 (2006)，「筐網結構物在不同水流攻角對橋墩沖刷保護之影響」，國立成功大學水利及海工程研究所碩士論文。
16.詹錢登 (2005)，「泥沙運行學上課講義」，國立成功大學水利及海洋工程學系。
17.蔡文鎗 (1989)，「圓柱形橋墩之沖刷研究」，國立成功大學水利及海洋工程研究所碩士論文。
18.蔡長泰 (2006)，「河道水力學上課講義」，成功大學水利所。
19.蕭慶章 (2004)，「實用河川工程(上) 河川工程規劃」，科技圖書。
20.蕭慶章 (2004)，「實用河川工程(下) 河川工程治理」，科技圖書。
21.Ataie-Ashtiani, B. and Beheshti, A.A. (2006), “Experimental Investigation of Clear-water Local Scour at Pile Groups”, Journal of Hydraulic Engineering, ASCE, Vol.132, No.10, pp.1100-1104.
22.Baker, C.J. (1980), “Theoretical Approach to Prediction of Local Scour Around Bridge Piers”, Journal of Hydraulic Research, Vol.18, No.1, pp.1-12.
23.Breusers, H.N.C. and Raudkivi, A.J. (1991), “Scouring”, Hydraulic Structures Design Manual, pp.51-99.
24.Chiew, Y.M. and Melville, B.W. (1987), “Local Scour Around Bridge Piers”, Journal of Hydraulic Research, Vol.25, No.1, pp.15-26.
25.Chiew, Y.M. (1992), “Scour Protection at piers”, Journal of Hydraulic Engineering, ASCE, Vol.118, No.9, pp.1260-1269.
26.Chiew, Y.M. (2004), “Local Scour and Riprap Stability at Bridge Piers in a Degrading Channel”, Journal of Hydraulic Engineering, ASCE, Vol. 130, No.3, pp.218-226.
27.Ettema, R., Kirkil, G., and Muste, M. (2006), “Similitude of Large-Scale Turbulence in Experiments on Local Scour at Cylinders”, Journal of Hydraulic Engineering, ASCE, Vol.132, No.1, pp.33-40.
28.Huang, C-K, Tang, C-J, and Kuo, T-Y (2005), “Use Of Surface Guide Panels As Pier Scour Countermeasures”, International Journal of Sediment Research, Vol.20, No.2, pp.119-130.
29.Laursen, E.M. (1960), “Scour at Bridge Crossings”, Journal of the Hydraulic Division, ASCE, Vol.86, No.Hy2, February, pp.39-54.
30.Lauchlan, C.S. and Melville, B.W. (2001), “Riprap Protection at Bridge Piers”, Journal of Hydraulic Engineering, ASCE, Vol.127, No.5,May, pp.412-418.
31.Melville, B.W. and Randkivi, A.J. (1977), “Flow Characteristics in Local Scour at Bridge Piers”, Journal of Hydraulic Research, Vol.15, No.4, pp.373-380.
32.Melville, B.M. and Sutherland, A.J. (1988), “Design Method for Local Scour at Bridge Pier”, Journal of Hydraulic Engineering, ASCE, Vol.114, No.10, pp.1210-1226.
33.Melville, B.W., and Hadfield, A.C. (1999), “Use of Sacrifical Piles as Pier Scour Countermeasures”, Journal of Hydraulic Engineering, ASCE, Vol 125, No.11, pp.1221-1224.
34.Melville, B.W., and Chiew, Y.M. (1999), “Time Scale for Local Scour at Bridge Piers”, Journal of Hydraulic Engineering, ASCE, Vol 125, No.1, pp.59-65.
35.Melville, B.W., and Coleman, S.E. (2000), “Bridge Scour”, Water Resourcrs Publications, LLC.
36.Oliveto, G., and Hager, W.H. (2005), “Further Results to Time-Dependent Local Scour at Bridge Elements”, Journal of Hydraulic Engineering, ASCE, Vol.131, No.2, pp.97-105.
37.Randkivi, A.j. , and Ettema, R. (1977), “Effect of Sediment Gradation on Clear Water Scour”, Journal of the Hydraulic Division, ASCE, Vol.103, No.10, pp.97-105.
38.Randkivi, A.j. and Ettema, R. (1983), “Clear-Water Scour at Cylindrical Piers”, Journal of Hydraulic Engineering, ASCE, Vol.109, No.3, pp. 338-349.
39.Sheppard, D.M., Odeh, M., and Glasser, T. (2004), “Large Scale Clear-Water Local Pier Scour Experiments”, Journal of Hydraulic Engineering, ASCE, Vol.130, No.10, pp.957-963.
40.Sheppard, D.M., and Miller, W. (2006), “Live-Bed Local Pier Scour Experiment”, Journal of Hydraulic Engineering, ASCE, Vol.132, No.7, pp.635-642.
41.Yoon, T.H. (2005), “Wire Gabion for Protecting Bridge Piers”, Journal of Hydraulic Engineering, ASCE, Vol.131, No.11, pp.942-949.
42.Zarrati, A.R., Nazariha, M., and Mashahir, M.B. (2006), “Reduction of Local Scour in the Vicinity of Bridge Pier Groups Using Collars and Riprap”, Journal of Hydraulic Engineering, ASCE, Vol.132, No.2, pp.154-162.
43.Subhasish Dey; Rajkumar V. Raikar; and Abhishek Roy. (2008), “Scour at Submerged Cylindrical Obstacles under Steady Flow”, Journal of Hydraulic Engineering, ASCE, Vol.134, No.1, pp.105-109.
44.Bruce W. Melville, M.ASCE; Sjoerd van Ballegooy; Stephen E. Coleman; and Brian Barkdoll, M.ASCE. (2007), “Riprap Size Selection at Wing-Wall Abutments”, Journal of Hydraulic Engineering, ASCE, Vol.133, No.11, pp.1265-1269.