An underground drainage system

By setting through holes in the main rainwater pipe and wrapping it with filter material, especially a combination of crushed stone layer and geotextile, the problem of low efficiency in lowering the groundwater level in the existing technology is solved, and the effect of rapidly lowering the groundwater level and protecting facilities and equipment is achieved.

CN224412734UActive Publication Date: 2026-06-26THE SECOND ENG COMPANY OF CCCC FOURTH HARBOR ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
THE SECOND ENG COMPANY OF CCCC FOURTH HARBOR ENG
Filing Date
2025-07-30
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing stormwater drainage systems are inefficient at lowering groundwater levels and cannot quickly reduce them, affecting the performance and lifespan of facilities and equipment.

Method used

Through holes are set on the main rainwater pipe and the outside is wrapped with filter material. The filter material is a combination of gravel layer and geotextile. The through holes are designed at specific angles and positions to improve the efficiency of groundwater collection and filter impurities. The combined structure of the main rainwater pipe and the secondary rainwater well is used for the collection and discharge of rainwater and groundwater.

Benefits of technology

By designing perforated holes and filtering materials, the groundwater level can be lowered rapidly, protecting facilities and equipment from long-term immersion damage and improving the efficiency of groundwater level reduction.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224412734U_ABST
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Abstract

The utility model relates to the technical field of municipal works, concretely relates to an underground drainage system, including main rainwater pipe and main rainwater well. Main rainwater pipe is located below ground, and the both ends of main rainwater pipe are communicated with two adjacent main rainwater well respectively, the pipe wall of main rainwater pipe is equipped with several groups of through -hole along the axial direction of main rainwater pipe, and the periphery of main rainwater pipe is wrapped with filter material. The utility model discloses the through -hole set up on main rainwater pipe can assist and improve the efficiency of reducing groundwater level, and then realizes the effect of quickly reducing the groundwater level.
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