GAO Zhen,SONG Jia-mei,YANG Yuan-jing,et al. Analysis of Qianhai-Nanshan Deep Tunnel Drainage System Project Scheme in Shenzhen [J].China Water & Wastewater,2020,36(13):96-100.
深圳市前海-南山排水深隧系统工程方案研究
- Title:
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Analysis of Qianhai-Nanshan Deep Tunnel Drainage System Project Scheme in Shenzhen
- 摘要:
-
通过建立深圳市前海—南山排水深隧系统的水力模型，模拟了现状排水系统的运行情况，确定了排水深隧系统的建设规模，研究了深隧系统对前海地区水质保障的影响。结果表明，通过排水深隧系统及相关工程的建设，可以将前海片区的排涝标准提升至50年一遇；使水廊道北环、桂庙渠、水廊道南环、铲湾渠的水质超标天数分别减少92.4、206.8、245.1和253.8 d；深隧系统在典型年最不利降雨情况下，对COD和TN的截留率均达到了80%以上，对TP的截留率达到了68.99%，有效地保障了前海地区的水环境质量。
- Abstract:
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A hydraulic model of Qianhai-Nanshan deep tunnel drainage system in Shenzhen was built. The operation of the current drainage system was simulated, the construction scale of the deep tunnel drainage system was determined, and the influence of the system on water quality in Qianhai area was systematically studied. The drainage standard of Qianhai area could be raised to 50year return period through construction of the deep tunnel drainage system.The number of days with water quality exceeding the standard in north ring of the water corridor, Guimiao canal, south ring of the water corridor and Chanwan canal was reduced by 92.4 days, 206.8 days, 245.1 days and 253.8 days, respectively. Under the extreme rainfall event in a typical year, the interception rate of COD and TN reached above 80%,and the interception rate of TP reached 68.99%, which effectively improved the water environment quality in Qianhai area.
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