浙江典型海塘实时安全监测分析

发布时间：2018-05-06 06:08

本文选题：浙江典型海塘 + 台风暴潮　；参考：《长江科学院院报》2017年06期

【摘要】：海塘是浙江沿海及海岛抵御台风暴潮的第一道防线。针对海塘跨域大、台风期恶劣气候影响严重以及海塘外部影响对内部响应变化速度快的特点,提出了大范围、分布式、集中管理的远程实时动态海塘安全监测技术,并对钱塘江海宁盐仓段标准塘和浙东海塘舟山万丈塘进行实时监测。监测结果表明:海塘内部渗压水位与潮位有较好的相关性,潮位涨落对海塘渗流影响由海塘外侧至内侧逐渐减弱;海塘内部水力坡降均小于允许坡降,海塘渗透稳定满足要求。在潮涌作用下,海塘将产生mm级水平变形,随着潮位涨落,海塘内部水平位移呈周期性变化;水平位移沿深度分布呈现上部大、下部小的特点。研究成果为海塘的日常维护和应急抢险提供技术支撑。
[Abstract]:Seawall is the first line of defense against storm surge off Zhejiang coast and islands. In view of the characteristics of large span of seawall, severe impact of severe climate during typhoon period and fast change of internal response caused by external effects of seawall, a remote real-time dynamic seawall safety monitoring technology with wide range, distributed and centralized management is put forward. The standard ponds of Haining salt warehouse in Qiantang River and Wanzhang pond of Zhoushan in eastern Zhejiang were monitored in real time. The monitoring results show that there is a good correlation between the osmotic pressure level and the tidal level in the seawall, the effect of the tidal level fluctuation on the seawall seepage gradually weakens from the outside to the inner side of the seawall, the hydraulic gradient in the seawall is smaller than the allowable slope, and the seawall osmotic stability meets the requirements. Under the action of tidal surge, the horizontal deformation of the seawall will be of mm order, and the horizontal displacement of the seawall changes periodically with the fluctuation of the tidal level, and the horizontal displacement along the depth of the seawall is larger in the upper part and smaller in the lower part. The research results provide technical support for daily maintenance and emergency rescue of seawall.
【作者单位】：浙江省水利河口研究院;浙江广川工程咨询有限公司;
【基金】：水利部公益性行业科研专项经费项目(201201043) 浙江省科技计划项目(2014F50016) 浙江省水利厅科技计划项目(RB1514,RC1543)
【分类号】：U657

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