Pulse atomized slurry air pressure perfusion system and construction method thereof

The pulsed atomized grout gas pressure injection system uses pressurized gas to carry atomized grout for intermittent infiltration injection, which solves the problem of poor grout permeability and controllability in soft strata, realizes effective infiltration and consolidation of grout in fine pores, and improves grouting quality.

CN122147881APending Publication Date: 2026-06-05HUNAN ZHONGNAN HYDROPOWER SHUILI ENG CONSTRUCT CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUNAN ZHONGNAN HYDROPOWER SHUILI ENG CONSTRUCT CO LTD
Filing Date
2026-03-27
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Traditional grouting techniques suffer from poor grout permeability and controllability in soft strata, especially when the pores are small, which can easily lead to grout leakage, runoff, and spillage, and the grouting quality is limited.

Method used

The pulse atomized slurry pneumatic grouting system is adopted. Through the combination of isolation sleeve, grouting tool group, slurry gas guide and air compressor, pressurized gas is used to carry atomized slurry for intermittent permeation grouting, eliminating the adsorption and agglomeration effect of slurry and realizing the dispersion and independent permeation of slurry particles.

Benefits of technology

It significantly improves the permeability and grouting effect in soft strata, ensures the effective penetration and consolidation of grout in fine pores, enhances the effectiveness and durability of grouting, and avoids grout leakage and runoff.

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Abstract

The application provides a pulse atomized slurry air pressure grouting system and a construction method thereof, and belongs to the technical field of foundation grouting reinforcement. The system is provided with an isolation sleeve in a drill hole. The isolation sleeve separates a non-grouting section of the drill hole, and a grouting section is formed between the lower end of the isolation sleeve and the bottom of the drill hole. A grouting device group enters the grouting section from the isolation sleeve. An air compressor delivers pressure gas to the grouting device group through a slurry gas flow guide, drives away pore water vapor of the soil, opens a grouting passage in the soft stratum, and a pulse grouting pump delivers pulse slurry to the grouting device group through the slurry gas flow guide. The pulse slurry is dispersed by the grouting device group to form pulse atomized slurry. With the continuous penetration and diffusion of the pressure gas in the grouting hole section to the grouting passage of the stratum, the atomized pulse slurry particles penetrate into the stratum pores together with the pressure gas, and effective and controllable penetration grouting is implemented on the soft stratum.
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