Prefabricated clear water-sewage separation side type ditch inspection well and cover plate

Abstract

The invention belongs to the technical field of tunnels and underground engineering, and particularly relates to a prefabricated clear water-sewage separation side ditch inspection well and cover plate. The prefabricated clear water-sewage separation side ditch inspection well is characterized in that the inspection well is partially arranged on the lower portion of a tunnel lane and tightly attached to a roadside inspection way on the outer side of the tunnel lane, and an inspection well opening is formed in one side of the upper portion of the inspection well; a transverse water guide pipe is arranged on the lower portion of the inspection well to collect underground seepage water, the inspection well cover plate and the inspection well opening are tightly attached and closed, a groove is formed in the upper surface of the inspection well cover plate and serves as a sewage drainage side ditch, and the inspection well opening and the inspection well cover plate are both arranged in the lateral width of the tunnel lane. The prefabricated clear water-sewage separation side ditch inspection well and cover plate have the advantages that the size of the lower portion of the side type ditch inspection well can meet the drainage requirements of different underground water seepage amounts, the inspection well opening does not occupy the lane width, tunnel vehicle passing is not affected during overhauling, the inspection well cover plate has the independent sewage drainage function, and the environment-friendly requirement for tunnel drainage clear water-sewage separation is met.

Description

technical field [0001] The invention belongs to the technical field of tunnels and underground engineering, and in particular relates to a prefabricated cleaning and separation side ditch inspection well and a cover plate which do not occupy the width of a lane in a tunnel. Background technique [0002] The tunnel drainage system is an important part of the tunnel project. According to the requirements of the current tunnel design code, a longitudinal drainage system should be installed in the tunnel according to the principle of separating and discharging groundwater, operational cleaning sewage, and firefighting sewage. Existing tunnels are equipped with roadside ditches to discharge sewage, and central or side drainage culverts to remove underground water seepage, but the following problems have existed for a long time: 1. The central culvert for draining groundwater is always located within the range of the carriageway, and the pavement layer structure needs to be broken ...

AI Technical Summary

Problems solved by technology

Existing tunnels are equipped with roadside ditches to discharge sewage, and central or side drainage culverts to remove underground water seepage, but the following problems have existed for a long time: 1. The central culvert for draining groundwater is always located within the range of the carriageway, and the pavement layer structure needs to be broken during maintenance , the lane is closed, which greatly affects the passage of tunnel vehicles; 2. When the side culvert and the sewage side culvert are independently installed on the same side of the road, the culvert maintenance wellhead and cover plate take up a lot of space, and the outermost side is also required for maintenance. Lane width, affecting vehicle traffic

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