Experimental testing device for reinforcing fractured rock sample through high-pressure permeation grouting and grouting method

Abstract

The invention discloses an experimental testing device for reinforcing a fractured rock sample through high-pressure permeation grouting and a grouting method. The experimental testing device comprises a grouting sample loading area, a grouting device and a cleaning device, wherein the grouting device comprises an air compressor and a slurry barrel. High-pressure air drives superfine cement slurryin the slurry barrel to enter the bottom of the grouting sample loading area; the high-pressure air passes through a plurality of valves and then enters the two sides in the grouting area; the grouting sample loading area is of a sealed structure and comprises a slurry loading area, a grouting area and a metal hollow cylinder clamp; during grouting, a fractured rock sample is placed in a center hole of the clamp; high-pressure slurry flowing out of the slurry barrel permeates from the bottom end of a slurry filling area at the lower portion of the clamp and the periphery of the clamp and fills the rock sample at the same time; and clear water is pumped out by the high-pressure air to clean residual slurry in the pipeline into a waste receiving barrel. The rock sample grouting effect is observed through low-position grouting and high-position slurry turning, cleaning is conducted in time while grouting is completed to avoid slurry deposition, operation is convenient, grouting control is accurate, and the grouting effect is good.

Description

technical field [0001] The invention relates to a high-pressure grouting reinforcement device for fissure surrounding rocks in deeply buried underground engineering, in particular to an experimental testing device and a grouting method for high-pressure infiltration grouting to reinforce fissure rock samples. Background technique [0002] Grouting reinforcement technology has been widely used in the excavation process of deep-buried caverns, which has significantly improved the integrity and safety of the surrounding rocks of the fissures. However, it is difficult to test the bearing capacity and permeability of surrounding rocks reinforced by high-pressure grouting. The key technical issues have an important impact on the stability and long-term safety of the surrounding rock of underground engineering, and have attracted great attention and attention from the underground engineering community. Therefore, it is necessary to carry out a series of tests on the mechanical prop...

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: the present invention provides an experimental testing device and a grouting method for high-pressure infiltration grouting to strengthen cracked rock samples, so as to solve the deficiencies in the prior art

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