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1 试材本试验用的砂石为平均粒径4.98mm,最大粒径9.56mm(95%粒径为8.80mm)的混合砂石,且容重为2.61g/cm~3,内摩擦角为42°。分别准备了由纵梁净距L~v与横梁净距Lh组成的23.5mm×23.5mm,23.5mm×17.0mm,17.0mm×23.5mm,17.0mm×17.Omm,23.5mm×12.7mm,12.7mm×23.7mm6种坝模型。以下所示的试验结果图均用与d_95之比表示。用于试验的水槽宽15.3cm,长4m,侧壁为丙烯基制品,水槽底为木制品。水槽坡度分10°,15°,20°三种,且对应的供水量分别为土1.0l/s,1.5l/s,2.0l/s。
1 Test Specimens The gravel used for this test is a mixed sandstone having an average particle diameter of 4.98 mm and a maximum particle diameter of 9.56 mm (95% particle diameter of 8.80 mm), and has a bulk density of 2.61 g / cm 3 and an internal friction angle of 42 °. 23.5 mm × 23.0 mm, 17.5 mm × 17.0 mm, 17.0 mm × 23.5 mm, 17.0 mm × 17.0 mm, 23.5 mm × 12.7 mm, 12.7 mm, mm × 23.7mm6 kinds of dam model. The test results shown below are used and d_95 ratio. The tank used for the test was 15.3 cm wide and 4 m long, with acrylic-based products on the side walls and wood products at the bottom of the tank. Slope slope points 10 °, 15 °, 20 ° three, and the corresponding water supply were soil 1.0l / s, 1.5l / s, 2.0l / s.