Loose media permeation grouting simulation experiment method

Abstract

The invention discloses a loose media permeation grouting simulation experiment method. A constant-pressure confining pressure pump is utilized to inject high-pressure water into a rubber water bag sleeve via a water hole to provide confining pressure, and the provided confining pressure is higher than grouting pressure; during grouting, a rubber valve sleeve depends on the confining pressure to tightly wrap loose media, loose media grouting is definitely permeation grouting under the condition that the confining pressure is higher than the grouting pressure, and therefore the influence of grouting methods, such as compaction grouting and fracturing grouting, on grouting effect is prevented. The loose media permeation grouting simulation experiment method is convenient to operate, and cantruly simulate permeation grouting reinforcement for the loose media, the rubber valve sleeve is utilized to wrap the loose media, and by means of the rubber water bag sleeve, pressure is applied on the loose media to simulate a geostress environment; by regulating the pressure of the constant-pressure confining pressure pump and a grouting pump, the confining pressure is higher than the groutingpressure, so that the loose media permeation grouting process can be simulated; after grouting is completed, the solidified loose media wrapped by the rubber valve sleeve can be completely taken out for study; and an experimental result obtained by the method has guiding significance for an actual engineering design.

Description

technical field [0001] The invention relates to a loose body seepage grouting simulation test method, which is suitable for laboratory simulation of loose body seepage grouting. Background technique [0002] Infiltration grouting of loose bodies is a common problem in geotechnical engineering. The law of grout diffusion during grouting and the mechanical properties of loose bodies after grouting are the key to the practice of grouting reinforcement of loose bodies. During on-site construction, loose bodies are mostly in a certain in-situ stress field, especially in deep geotechnical engineering. Therefore, it is of great significance to realize the simulation of loose body grouting test laboratory for actual loose body grouting projects. [0003] However, the existing laboratory loose body grouting simulation test devices mostly use filling grouting tests, which cannot reproduce the in-situ stress environment, and the analysis process of the loose body consolidation form aft...

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Problems solved by technology

[0003] However, the existing laboratory loose body grouting simulation test devices mostly use filling grouting tests, which cannot reproduce the in-situ stress environment, and the analysis process of the loose body consolidation form after grouting consolidation is also very diffic

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