Slope capillary retardation covering layer water migration inhibition structure based on fracture extension mechanism

The three-layer integrated barrier capillary ...

CN121875290AActive Publication Date: 2026-04-17HUNAN INSTITUTE OF ENGINEERING
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Patent Information

Application Number
CN202610340342.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-19
Publication Date
2026-04-17
Estimated Expiration
2046-03-19

AI Technical Summary

Technical Problem

Existing capillary barrier capillary layers are prone to saturation under heavy rain conditions, leading to the accumulation of water pressure at the interface, structural failure, and inability to effectively inhibit water migration.

Method used

A three-layer integrated retaining capillary system is adopted, including a fine soil layer, a drainage layer, and a coarse gravel layer. Through sequential layering design, the fine layer controls capillary rise, the drainage layer provides drainage channels, the drainage layer eliminates pore water pressure accumulation, and the coarse layer accelerates gravity drainage.

Benefits of technology

It effectively inhibits capillary water upflow and moisture migration rate, improves waterproof and moisture-proof effect, reduces water pressure-induced damage, improves drainage efficiency, controls freezing depth and frost heave force, and maintains internal moisture pressure within a safe range.

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Abstract

The invention discloses a slope capillary retardation covering layer water migration inhibition structure based on a fracture extension mechanism, and relates to the technical field of slope water migration inhibition. Comprising a first covering layer, a second covering layer, a third covering layer and a substrate, and the first covering layer, the second covering layer and the third covering layer are laid on the top of the substrate. According to the invention, a three-layer comprehensive retardation covering layer system is adopted, the formed comprehensive retardation covering layer is integrally divided into a thin-guide and drainage layer-thick three-layer capillary retardation covering layer system, and the multi-layer structure is designed in a sequential layering manner, so that the ascending of capillary water can be inhibited, the permeation and moisture migration rate can be reduced, and the waterproof and moistureproof effects can be improved; and in the layering process from fine grains to coarse grains, the fine layer is responsible for controlling capillary rising, and the discharge layer provides a moisture or moisture discharge channel, so that the internal moisture pressure is maintained in a safe range, and damage induced by water pressure is reduced.
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