Oriented fixed-layer slurry-injecting sleeve valve tube and slurry-injecting method

Abstract

The invention discloses an oriented fixed-layer slurry-injecting sleeve valve tube and a slurry-injecting method. The sleeve valve tube comprises an inner tube, an outer tube and a plurality of rubberrings, wherein a plurality of slurry outlet holes which are of the same hole diameters are distributed from bottom to top at one side of the outer tube at equal distance; inner threads are arranged at the upper end of the slurry outlet hole at the topmost end of the outer tube; the inner tube is embedded into the outer tube, and a plurality of slurry-injecting holes which are of the same hole diameter are formed in one side of the lower end of the inner tube at equal distance; outer threads which are matched with the inner threads are arranged at the upper end of the slurry-injecting hole atthe topmost end of the inner tube; the bottom end surface of the inner tube is sealed; the rubber rings sleeve the outer tube and seal the slurry outlet holes; and small holes are formed in positions,which correspond to the slurry outlet holes, of the rubber rings. Threads which are matched with one another are arranged between inner and outer tubes, and the inner tube can rotate in the outer tube and can move up and down, so that oriented fixed-soil-layer slurry injecting is realized.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering grouting, and in particular relates to a directional and layer-fixed grouting sleeve valve pipe and a grouting method. Background technique [0002] The French Soletanche foundation engineering company invented the Soletanche repair method in the 1950s, which is a relatively advanced grouting construction technology. China has carried out a series of research and development on it after its introduction, and called it the sleeve valve pipe grouting method. Because the sleeve valve pipe grouting method can carry out fixed depth, quantitative, fixed degree, fixed section, intermittent and repeated grouting, it combines the advantages of compaction grouting, penetration grouting and splitting grouting, and is now widely used in China. outside civil engineering. [0003] Most of the existing sleeve valve pipes use the method of pressure spraying grout to carry out grouting reinforce...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing sleeve valve pipes use the method of pressure spraying grout to carry out grouting reinforcement in all directions of all soil layers within the drilling depth range, and it is impossible to accurately carry out specific direction grouting on the soil layer at the specified depth and within a certain thickness range. grouting reinforcement

For some projects that only need to be reinforced by grouting in a specific direction and depth position, and within a specified thickness range, if the sleeve valve pipe is used for construction, on the one hand, the construction difficulty will be increased, and on the other hand, the raw material will be damaged. waste of

At the same time, due to the additional grouting of the land that does not need to be reinforced, the pollution to the geological environment has increased

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