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经过几年的专项课题“堤防渗流与防冲”的研究,结合’98洪水期间,安庆市水电设计院王华棠院长和九江市水利局的同志共同查看并向我们介绍的长江大堤险情情况,现就管涌与崩岸两个防洪抢险问题讨论如下。 管涌险情问题 1998年长江洪水险情以渗流险情最为普遍,沿长江6000余处险情中就有4000余处属渗流险情。其中管涌被视为险中之险。如果冒砂管涌洞口出现在堤内脚附近,外侧江水面有漩涡迹象,自然以迅速在外侧堵漏为上策。但如果管涌
After several years of special project “dike seepage and anti-red” study, combined with ’98 flood period, Anqing City Hydropower Design Institute Dean Wang Huatang and Jiujiang City Water Conservancy comrades to see and tell us about the situation of the Yangtze River embankment, and now The two problems of flood control and flood collapse are discussed below. Piping problems danger In 1998, the flood danger in the Yangtze River is the most common danger of seepage, along the Yangtze River more than 6,000 dangerous situations there are more than 4000 belong to seepage danger. Among them, piping is regarded as a dangerous risk. If the sand tube hole appears in the embankment near the foot, outside the river there are signs of swirling, natural rapid plugging on the outside is the best policy. But if the pipe