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湖南省安乡安造垸在 1998年 7月长江流域遭遇特大洪水中溃决 ,通过对溃决后抢堵情况回顾 ,并以此为例 ,对溃口抢堵的相关技术原则、抢堵方案、技术措施等进行分析论述。如堵口技术方案中主要技术问题有溃口形状演变与水力估算 ;抛投物料稳定分析 ;应用钢管桩框架稳定分析 ;沉船措施的使用条件等。堤防抢险的主要原则是 :抢早抢小 ;要有抢险预案 ;要从实际情况出发选择抢堵方法 ;抢堵时机的选择亦是非常重要。
Anxiang Embankment in Hunan Province, an embankment in the Yangtze River Basin in July 1998 suffered a catastrophic floods, by reviewing the case of grab blockage after the collapse, and as an example, the relevant technical principles of breach plugging, grab blocking programs, technical measures Analysis and discussion. For example, the main technical problems in the technical scheme of plugging include the evolution of the breach shape and the hydraulic estimation, the stability analysis of the cast material, the application of the stability analysis of the steel pipe pile frame, the conditions of use of the sunken ship. The main principles of embankment rescue are as follows: grab a small grab early; have a rescue plan; from the actual situation to choose the method of grab blocking; grab the timing of the choice is also very important.