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据美国《混凝土学会志》1977年9月号报道,目前,美国广泛使用一种内盛混凝土的尼龙褥来防止渠道、河岸被流水冲刷。它是用双层尼龙织物做成的,施工时用压力注入小骨料混凝土,即成为防冲护面。这种护面有两种型式。一种是透水的,每隔5、8、12、16英寸有一反滤点,它们能使护面下方的水排出,从而降低静水对护面的扬压力。当尼龙褥充满混凝土后,各反滤点间的褥面便隆起成大圆石般的连续排列体;另一种是不透水的,它没有反滤点,表面相当平
According to the American “Concrete Society” in September 1977 reported that at present, the United States widely used a nylon lining concrete to prevent the channel, the riverbank was washed. It is made of double-layer nylon fabric, the construction of the pressure into the small aggregate concrete, which became anti-impact surface. There are two types of this face. One is permeable, with a filter point every 5, 8, 12, and 16 inches, which allows the water below the face to be drained thereby reducing the hydrostatic pressure on the face. When the nylon blankets filled with concrete, the filter surface between the filter points uplift into a boulder-like continuous arrangement; the other is impermeable, it has no filter points, the surface is rather flat