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珠江三角洲内有广州市及一批重要城镇,江海堤是该区的主要防洪、防潮工程措施,但防御能力不高,仍受特大洪水和台风暴潮威胁。如遇特大洪水,靠现有堤防及采取临时分、滞洪措施,难以确保重要城镇的安全。文中探讨了加强防洪安全的对策和措施,提出了采取北江大堤与滞洪区相结合、整治入海尾闾八大口门、整治重点河段、开发滩涂、加固堤围险工险段险闸、加强岸线整治和管理,以及采取非工程防洪措施等对策以防御特大洪水和台风暴潮。
Guangzhou and a number of important towns in the Pearl River Delta. Jianghai Dyke is a major flood prevention and damming engineering measure in this area. However, its defensive capability is not high and is still threatened by extra-large floods and typhoon surge. In case of extreme floods, it is difficult to ensure the safety of important towns on the basis of the existing embankments and the temporary separation and detention measures. The paper discusses the countermeasures and measures for strengthening flood control safety. It proposes to combine the Beijiang Levee with the flood detention area to rectify the eight major gates of the tail gate into the sea, rehabilitate the key river sections, develop beaches, reinforce the floodgates of the dangerous sections of embankment breaks and strengthen the shoreline regulation And management, and measures such as non-engineering flood prevention measures to prevent catastrophic floods and typhoon surge.