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.
Analysis of Qianhai-Nanshan Deep Tunnel Drainage System Project Scheme in Shenzhen
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
13
Page:
96-100
Column:
Date of publication:
2020-07-01
- 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.
Last Update:
2020-07-01