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2.18 排水溝(Drainage ditch) .......................................................................... 工-2-170

2.19 暗渠(Underdrain) .................................................................................... 工-2-177

2.20 跌水(Drop structure) ............................................................................... 工-2-183

2.21 洩槽(Chute) ............................................................................................ 工-2-190

2.22 橫向集水管(Horizontal drain pipe) ........................................................ 工-2-195

2.23 地下水集水井(Drainage well) ............................................................... 工-2-198
2.24 排水廊道(Drainage tunnel) .................................................................... 工-2-202

2.25 魚道(Fish way) ....................................................................................... 工-2-206
2.26 沉砂池(Sedimentation pond) .................................................................. 工-2-215

2.27 滯洪池(Flood detention pond) ................................................................ 工-2-219

參、附錄

附錄一、懸臂式擋土牆設計例(Cantilever wall design example) .................. 工-3-1
附錄二、重力式擋土牆設計例(Gravity wall design example) ......................... 工-3-9

附錄三、半重力式擋土牆設計例(Semi-gravity wall design example) .......... 工-3-14
附錄四、邊坡穩定圓弧形分析方法簡介(Introduction to slope stability

using circular failure surface analysis) .............................................. 工-3-20

ii