Multifunctional inspection well for connection position of new and old municipal drainage pipes

Abstract

The invention relates to a multifunctional inspection well for a connection position of a new pipe and an old pipe of municipal drainage. The multifunctional inspection well comprises an inspection well body (1), a rainwater well chamber (2), a silt well chamber (3), a sewage well chamber (4), a confluence pipeline (5), an overflow pipeline (6), a sewage inlet pipe (7), a sewage outlet pipe (8) and a flow limiting hole (9). Functional characteristics of a mud sinking well, an intersection well, a flap valve well and a branch pipe flow limiting well are integrated in one inspection well, flow limiting and collection of dry flow sewage can be achieved, elevation conflicts of the sewage pipe and the intersection pipe are coordinated, the buried depth of the downstream sewage pipe is reduced, rainwater recharged by an overflow pipeline is prevented from entering the sewage pipe in the rainy season, and centralized dredging is conducted at the position of the mud sinking groove. The multifunctional inspection well has the advantages of improving water flow hydraulic conditions, saving occupied underground space, facilitating construction, saving investment, facilitating later operation and maintenance and the like.

Description

technical field [0001] The invention belongs to the technical field of inspection well structures, and in particular relates to the technical field of a multifunctional inspection well structure used for connecting old and new municipal drainage pipes. Background technique [0002] When carrying out rain and sewage diversion renovation pipe network projects in cities, it is necessary to deal with the cross-connection of new pipes and original confluence pipes. The factors to be considered in the design are: [0003] 1. Collision avoidance measures when the elevation of the old and new pipelines conflict; [0004] 2. When the original confluence pipeline is flooded with a large amount of water in the rainy season and the newly-built pipeline is full, measures are taken to limit the flow and collect sewage; [0005] 3. When the downstream of the confluence pipeline is a river, measures to prevent high water levels from flooding the sewage system during the rainy season; [0...

AI Technical Summary

Problems solved by technology

[0007] 5. When the comprehensive pipeline is complex and the underground space is insufficient, the operability of the inspection well construction is problematic

However, there are many inspection wells and additional branch pipes in the construction of branch pipe current limiting connection measures. When the underground pipeline is complex, it may not be possible to construct or need to relocate the comprehensive pipeline. It is also relatively large; when there is an elevation conflict between the newly-built sewage main and the original confluence pipeline, measures to avoid rainbows should be added

In summary, it is not the optimal solution in terms of construction feasibility, hydraulic effects, social impact, investment control, and post-management.

Images