Dock drainage tunnel 干坞出水洞
gas drainage tunnel 抽放瓦斯巷
sewage drainage tunnel 长江排污隧洞
underground drainage tunnel 地下排水隧洞
water supply and drainage tunnel 排水隧道
tunnel drainage 隧道排水 ; 隧洞排水
Lance Corporal Pineada called from deep within the drainage tunnel.
通话结束。” 帕尼达准下士从排水隧道深处回话道。
The measured data of the groundwater level, rainfall and the drainage tunnel discharge about the landslide are studied.
通过实际工程，研究降雨量、地下水位、排水隧洞流量的监测数据资料。
For ensuring the safety of construction and traffic, a 4700 m-drainage tunnel was built to release the karst water in the Maluqing tunnel.
为此，在隧道进口设置长约4700 m的泄水洞，以泄出溶洞内高压水，保证隧道施工及运营安全。
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