Super-long tunnel clean water and sewage separation draining structure suitable for cold regions

Abstract

The invention discloses a super-long tunnel clean water and sewage separation draining structure suitable for cold regions. A tunnel opening segment draining structure, a tunnel body segment drainingstructure, an outside-tunnel clean water trench, an outside-tunnel deeply buried trench, an outside-tunnel sewage trench and a purified water pond are included; the tunnel opening segment draining structure comprises a center trench and side type sewage trenches A; the center trench is deeply buried at the position, lower than the freezing depth, of a main tunnel opening segment; the two sides ofthe main tunnel opening segment are each provided with the corresponding side type sewage trench A; the tunnel body segment draining structure comprises side type clean water trenches and side type sewage trenches B; and the two sides of a main tunnel body segment are provided with the side type clean water trenches and the side type sewage trenches B. The super-long tunnel clean water and sewageseparation draining structure suitable for the cold regions has the beneficial effects that clean water and sewage separation discharging treatment during the tunnel construction and operation periodis achieved, and high environment requirements are met; a tunnel opening segment and a tunnel body segment are separately provided with the draining structures, the heat preserving requirement for draining in the cold regions is met, and it can be effectively prevented that underground water seeps into a tunnel and a freezing disaster happens; and a service tunnel is utilized for assisting in enhancing the main tunnel draining capacity, and super-large water amount discharging of a super-lone tunnel is achieved.

Description

technical field [0001] The invention relates to the technical field of tunnels and underground engineering, in particular to an ultra-long tunnel cleaning, sewage, separation and drainage structure suitable for cold regions. Background technique [0002] Tunnel drainage is related to the normal advancement and safety of tunnel construction and operation. The "Code for Design of Highway Tunnels" stipulates: "Tunnel waterproof and drainage measures adopted should pay attention to protecting the natural environment", "It is advisable to clean the sewage in the tunnel according to the groundwater and operation. The principle of separation and discharge of fire fighting sewage is to set up a vertical drainage system". [0003] Tunnel sewage includes construction wastewater, operation cleaning sewage and firefighting sewage. In areas with high environmental requirements, sewage is not allowed to be discharged directly, but must be treated before being reused or discharged in a dif...

AI Technical Summary

Problems solved by technology

For tunnel drainage in cold regions, where the groundwater may freeze, it is advisable to set up a central deep-buried ditch. Crossing a large geological area, the overall water volume of the tunnel is large, which requires the tunnel to have a strong drainage capacity. The drainage of the main tunnel is limited by the section and longitudinal slope, and the drainage capacity will also be limited

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