Waterproof isolation protection structure and construction method for municipal road subgrade in coastal plain areas

By digging sealing trenches and laying waterproof materials on both sides of the roadbed in the coastal plain area, groundwater erosion is prevented, and the collapse and cracking problems caused by groundwater erosion by road genes is solved, and the service life of the road is extended.

CN111535105BActive Publication Date: 2025-03-21CCCC FOURTH HIGHWAY ENG CO LTD +1
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Patent Information

Application Number
CN202010369556.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-05-04
Publication Date
2025-03-21
Estimated Expiration
2040-05-04

AI Technical Summary

Technical Problem

Due to groundwater erosion, roadbeds in coastal plains have reduced road surface strength and collapse and cracks, which have affected the service life of the road.

Method used

Design a waterproof isolation and protection structure, including excavating sealing trenches on both sides of the roadbed, filling lime soil at the bottom, and laying woven fabrics and polyethylene films on the bottom and slopes to form a sealing film to prevent groundwater from invasion.

Benefits of technology

By isolating the roadbed from surrounding soil, it can effectively prevent groundwater erosion, reduce road collapse and cracking and extend the service life of the road.

✦ Generated by Eureka AI based on patent content.
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Abstract

The invention relates to a waterproof isolation protection structure for a municipal road subgrade in a coastal plain area and a construction method thereof. The invention mainly involves building sealing ditches on both sides of the subgrade, digging the sealing ditches to a certain depth below the underground impermeable soil layer, laying sealing membranes on the bottom and slopes of the sealing ditches, and backfilling the sealing ditches with lime soil, thereby isolating the subgrade from the surrounding permeable soil bodies, preventing groundwater from invading the subgrade and causing damage to the pavement structure, and reducing various diseases such as pavement collapse and cracking caused by groundwater erosion.
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