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.
Design of Rainwater Discharge Outlet Reconstruction during Coastal Beach Restoration in Coastal Cities
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第16期
Page:
63-69
Column:
Date of publication:
2023-08-17
- 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.
Last Update:
2023-08-17