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1979年10月31日夜,美国佛罗里达电力公司所属冷却水库的围堤决口,约2835公顷的库水倾泻出1.49亿立米的水,淹没了佛罗里达州的两个县的部分土地。溃堤的原因据认为是堤下渗水所致。一、堤坝迎水面为了今后减少堤下渗水,在迎水面坝趾近处开挖一条15英尺深、12英寸宽的沟槽。在开挖过程中,为防止坍塌曾连续地用膨润土水泥浆充填沟槽。然后在填槽上复盖一层砂和膨润土,丽在此复盖层上又铺填一层掺土水泥以防冲刷。二、堤坝背水面为了安全地排除堤坝渗水,拟在背水面坡脚处设置一道织物排水系统。
On the night of October 31, 1979, approximately 2,835 hectares of water from the cooling reservoirs of the Florida Electric Power Company poured out 149 million cubic meters of water and inundated some of the two counties in Florida. The cause of the embankment is believed to be caused by seepage under the embankment. First, the embankment facing the water In order to reduce the water infiltration under the embankment, in front of the water toe excavation of a 15-foot deep, 12-inch wide trench. During excavation, grooves were filled with bentonite grout continuously to prevent collapse. Then fill the tank with a layer of sand and bentonite, Li in this cover layer and then spread a layer of soil-doped cement to prevent erosion. Second, levee back to the surface In order to safely rule out levee seepage, it is proposed to set up a fabric drainage system at the back of the slope.