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放淤固堤工程中的施工围堰,是在泥沙沉放之前,在沉沙区周围先用土料修做的一道围堰。大体可分为一次性围堰和分期围堰两种形,其主要作用是将泥沙控制沉放在设计范围以内,并保证放淤施工的安全正常进行。由于实际施工时对放淤固堤工程中施工围堰的重要性的忽视,以致造成了惨痛的教训。阐述了围堰的重要作用及围堰施工时存在的种种问题,总结了围堰施工时的几点经验和建议,提出了放淤固堤工程中必须高度重视施工围堰的观点。
The construction cofferdam in the project of desilting and solidifying the dike is a cofferdam that is repaired with soil before the sediment is deposited. Generally can be divided into one-time cofferdam and staged cofferdam two forms, its main role is to sink sediment control within the design range, and to ensure the safety of silt deposition construction normal. Due to the neglect of the importance of construction cofferdam during the actual construction, it has caused painful lessons. The important role of cofferdam and various problems in construction of cofferdam are expounded. Some experiences and suggestions of cofferdam construction are summarized. A viewpoint that cofferdam must be attached great importance to in cofferdam embankment project is proposed.