Further improvements in drainage canals and pumping equipment in the older sections of the city were also made. These operated well until they were overwhelmed by Hurricane Katrina in 2005.
Used for industrial and civil architecture roofing, basement, tunnel, tunnels, water supply and drainage pool, water pumping station, etc have waterproof impermeable concrete engineering requirements.
用于工业与民用建筑的屋面、地下室、隧道、巷道、给排水池、水泵站等有防水抗渗要求的混凝土工程。
3
The hydrogeological condition and the original scheme on pumping are analyzed, and some new drainage methods are pointed out.