A kind of polymer grouting to strengthen the anti-settling high embankment to widen the roadbed

Abstract

The invention discloses a high polymer grouting reinforcement and anti-settlement broadened roadbed for a high embankment. The high polymer grouting reinforcement and anti-settlement broadened roadbed is characterized in that an earthwork pipe network is arranged and is a rectangular grid formed by PVC pipes and arranged in an array mode, and the PVC pipes in the rectangular grid communicate with one another; the earthwork pipe network is internally provided with upward-protruding grouting holes and exhaust holes and downward-protruding grout-flow holes; and the earthwork pipe network is laid in a fill stratum to form a fill stratum earthwork pipe network, high polymer grout is grouted into the fill stratum earthwork pipe network through the grouting holes to form a fill stratum grouting earthwork pipe network, and the high polymer grout is further grouted into vertical column holes formed in the fill stratum through the grout-flow holes to form vertical reinforcement columns. According to the high polymer grouting reinforcement and anti-settlement broadened roadbed, the transverse relation between a new embankment and an old embankment is enhanced, differential settlement is effectively controlled, and a new roadbed and an old roadbed are combined more stably and not prone to collapsing.

Description

technical field [0001] The invention relates to embankment widening in road widening and reformation, more specifically to a kind of high polymer grouting reinforcement anti-settling widening roadbed. Background technique [0002] With the continuous and rapid development of the national economy, the demand for road transportation in my country is increasing year by year, and the traffic flow of some existing roads has reached saturation. development needs. [0003] Roadbed widening is the main way to expand the capacity of existing highways. Due to the differences and interactions between the new and old subgrades, road diseases caused by widening of subgrades and overall pavement performance degradation are quite common in practical engineering, seriously affecting driving safety and comfort. In the prior art, the main problems of embankment widening include: [0004] 1. Differential settlement: Under the action of the old embankment's self-weight load, the settlement of...

AI Technical Summary

Problems solved by technology

However, a potential sliding surface will be formed after excavating the steps, which may cause lateral sliding of the widened part of the subgrade;

[0006] 3. Slope landslides: After the filling of new embankments is completed, for those with high slopes or large slopes, the slope protection measures should not be prone to landslides immediately

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