[1]张齐云,付朝晖,洪俊华.滨海城市海岸带沙滩修复中雨水排放口改造设计[J].中国给水排水,2023,39(16):63-69.
ZHANGQi-yun,FUZhao-hui,HONGJun-hua.Design of Rainwater Discharge Outlet Reconstruction during Coastal Beach Restoration in Coastal Cities[J].China Water & Wastewater,2023,39(16):63-69.
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ZHANGQi-yun,FUZhao-hui,HONGJun-hua.Design of Rainwater Discharge Outlet Reconstruction during Coastal Beach Restoration in Coastal Cities[J].China Water & Wastewater,2023,39(16):63-69.
滨海城市海岸带沙滩修复中雨水排放口改造设计
中国给水排水[ISSN:1000-4062/CN:12-1073/TU]
卷:
第39卷
期数:
2023年第16期
页码:
63-69
栏目:
出版日期:
2023-08-17
- Title:
- Design of Rainwater Discharge Outlet Reconstruction during Coastal Beach Restoration in Coastal Cities
- 摘要:
- 滨海城市海岸带沙滩修复中雨水排放口改造不当会造成沙滩流失、排放口淤积、排放口附近水环境恶化等问题。珠海市情侣路沿线沙滩修复雨水排放口改造工程经验如下：总体方案选择应重点考虑上游排水安全和沙滩水环境要求；雨水排放口内涝风险评估中应对暴雨和外海潮位多种组合工况进行核算，沙滩范围内雨水管渠设计规模宜比计算规模加大一级；沙滩范围内雨水管渠线位和标高宜结合沙滩修复主体工程的岸线泥沙运动特征来确定，应利于沙滩蚀淤动态平衡；排放口末端设计应重点考虑排放口延伸长度对景观协调的影响、顶面高程对坡面稳定的影响及排放口前淤积等；沿岸线平行铺设的主渠及沙滩范围内外露大型管渠应结合景观和海绵城市设计，构筑物顶面上宜预留表层沙移动通道。
- Abstract:
- During the restoration of coastal beaches in coastal cities, the improper reconstruction of rainwater discharge outlets may lead to problems such as beach erosion, siltation and the deterioration of water environment near the outlet. This paper summarized the experience of rainwater discharge outlet reconstruction in coastal beach restoration along Qinglü Road, Zhuhai. The overall scheme selection should focus on upstream drainage safety and beach water environmental requirements. The multiple combination conditions of rainstorm and offshore tide should be calculated during the waterlogging risk assessment of rainwater discharge outlet, and the design scale of storm sewer in the beach area should be one level larger than the calculated scale. The location and elevation of storm sewer or channel within the beach area should be determined according to the characteristics of sediment movement along the shoreline of the main beach restoration project, which should be conducive to the dynamic balance of sand erosion and siltation. The influence of outlet extension length on landscape coordination, the influence of top elevation on slope stability and the siltation in front of the outlet should be considered in the design of the end of the discharge outlet. The main channel laid parallel to the coastline and the large exposed channel in the beach area should be designed in combination with the landscape and sponge city, and the surface sand movement channel should be reserved on the top surface of the structure.
更新日期/Last Update:
2023-08-17