武汉市龙王庙险段综合整治工程加固设计

Strengthening design of the dangerous Longwangmiao dyke section in Wuhan City

龙王庙险段历来是汉江武汉市河段著名的险工段，是武汉市防汛的重中之重。１９９８年长江发生全流域性大洪水，党和国家领导人多次亲临视察，彻底根治龙王庙险段的工作也由此展开。整治工程遵循“扩展口门，改善河势，出险加固，综合整治”的原则。具体为：汉阳岸平均削坡后退６０ｍ；汉口岸整治通过钻孔灌注桩和“Ｌ”型挡土墙解决岸坡整体稳定问题，并对老驳岸墙进行加固，对驳岸平台和码头采用复合土工膜防渗处理，采用水下抛石结合混凝土铰链沉排以稳固岸脚。工程完工后，经受了１９９９年汛期洪水（２８．８９ｍ，居历史第３位）的考验，各项检测资料表明，所采取的综合整治措施安全可靠，达到了设计预期效果。

The Longwangmiao dyke section was the well-known dangerous dyke section of the Hanjiang river in Wuhan City, also the focal point of the Wuhan urban flood control. During the 1998 Yangtze flood, Party and state leaders personally inspected the dangerous section many times, and then the works to thoroughly regulate the dangerous Longwangmiao dyke section started. The regulation project was constructed in accordance with the principle of 'expanding the exit channel of the Hanjiang river, improving the river regime, strengthening dangerous locations and implementing comprehensive regulation'. The concrete contents of the project were that the river bank on Hanyang side retreated 60 m on an average with the original bank slope cutting; the river bank on Hankou side was regulated by building cast-in-situ-bored piles and an L-shaped retaining wall to improve integral stability, the old waterfront wall was strengthened, composite gemembrane was used for seepage prevention of the waterfront platforms and wharves, and the slope toe of the river bank was stabilized by dumping rubble stone and placing hinged concrete mattresses. The completed project experienced the 1999 flood (with its water level of 28.89 m, ranking third in history). All the test data showed that the adopted comprehensive regulation measures were safe and reliable, achieving expected design results.