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大眾義工

In recent years, every rainy season, many large and medium-sized city suffer from waterlogging suffering, has sparked intense attention of city drainage pipeline.Hongkong is a rainy city, how are they building drainage pipeline?August 16th night at ten fifteen,http://www.louboutinpascherxfrance.com/, Eic the typhoon approaching Hongkong,http://www.pumpsoutletoflouboutin.com/, observatory issued a tropical cyclone warning signal No.
eight, Hongkong city wild storms.After 5 hours,http://www.pumpsoutletoflouboutin.com/, the reporter uses before typhoon gap, visits to put into use next month of Lai Chi Kok discharge tunnel: a 4.9 metre diameter pipelines,http://www.christianlouboutinpumpsoutleter.com/, built close to the mountains, more than ten meters deep underground.
Rainstorm comes, rainwater is collected, and then after 40 meters deep underground main pipeline, guide the flood bypass downtown, is discharged directly into the sea.Hongkong annual rainfall of 2400 mm, many urban areas in low-lying areas, flooding, easy formation of waterlogging.
Although the urban drainage facilities with high standards, but is a few decades ago,http://www.louboutinpascherxfrance.com/, laying, along with the continuous development of the city, leading to increased land hardening surface runoff, called the immersion waterlogging occurred from time to time.
West Kowloon area of deep water?, Lai Chi Kok, Changsha Bay area residents,http://www.louboutinpaschermode.com/, by the immersion.By the end of 2008, the Hongkong government investment in 1700000000 Hong Kong dollars, began to build a drainage tunnel.
The drainage tunnel length in the catchment area of 7.18 square kilometers, 5.09 square kilometers can protect downstream of downtown.The rainwater drainage tunnel system to collect the Highlands area rainwater, discharged directly out to sea,http://www.pompesleslouboutinpascher.com/, can reduce the rainwater flowing into the urban old drainage system.
Hongkong drainage DSD acting chief engineer Chen Shangxi said, in addition to Lai Chi Kok tunnel, and two tunnels under construction.Tunnel engineering consultants Ai Yikang limited Tianyang engineer, located at the foot of the branch, there are 6 sets of nozzle, collected rainwater into the static pool, after the main canal through the sea.
The tunnel is built in Vitoria Bay,http://www.louboutinpaschermode.com/, above sea level, can prevent the storm tide causes water upwelling.Water is the use of the siphon principle, because the upstream stilling pool elevation is above sea outlet,http://www.christianlouboutinpumpsoutleter.com/, even if the main pipeline buried underground 40 meters, water still can be smoothly discharged.
Lai Chi Kok drainage tunnel is a long term flood control scheme.Relative to widen the urban old building drainage system,http://www.pompesleslouboutinpascher.com/, rainwater piping benefits are not disturbing.Introduction to Tianyang, although build tunnel comprises a bypass line and complex project, but without the need for urban roads broken bore open belly, road traffic, public life are affected.
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切雞飯`

你加油吧

nh88

看看好不好看

tamyc002

這論壇不錯

段皇爺

我回不回呢 考慮再三 還是不回了吧 ^_^  

svcscgba

非常感謝樓主，樓主萬歲萬歲萬萬歲！  

andykom28

好看的程度，心照不宣

tamyc002

自己知道了  

鬼谷先生

能告訴我去那邊分享的嗎？