Visualized experiment device for studying rock fissure-induced grouting parameters and method

Abstract

The invention provides a visualized experiment device for studying rock fissure-induced grouting parameters and method. The device comprises a reaction force frame; a force balancing plate is used forsupporting and placing a standard rock sample for an experiment; tempered glass is supported on the top of the standard rock sample; the tempered glass is fixed on the bottom end surface of a top plate; two symmetrical side walls of the standard rock sample are provided with special connecting grooves; the special connecting groove at one side is fixed with multiple pipe joints; the pipe joint isconnected with a mortar grouting machine through a grouting pipe; the special connecting groove at the other side is connected with an inducing pipe through the pipe joint; and the inducing pipe is connected with a suction device. Through adjusting the experiment conditions such as the loading force of a hydraulic jack, the positions of a grouting point and a suction point, the power of the grouting device and the suction device and the heights of four electric lifting rods, a series of experiments on studying rock fissure-induced grouting parameters can be completed.

Description

technical field [0001] The invention relates to the field of rock crack research experimental devices, in particular to a visual experimental device for researching rock crack induced grouting parameters. Background technique [0002] For a long time, the reinforcement and protection of rock fissures has always been one of the difficult problems in engineering construction. At present, in tunnel excavation, slope reinforcement, foundation pit support and other projects, rock fissures have an important impact on the stability of the project, especially rock fissure seepage is the cause of groundwater disasters, water seepage inside tunnels, and rock slope instability. important reason. Although under the existing construction technology conditions, bolt reinforcement, grouting reinforcement and other means can be used for a certain degree of protection, but due to the obvious difference in the development degree of different types of rock fissures, and different positions, s...

AI Technical Summary

Problems solved by technology

Although under the existing construction technology conditions, bolt reinforcement, grouting reinforcement and other means can be used for a certain degree of protection, but due to the obvious difference in the development degree of different types of rock fissures, and different positions, shapes, directions, Structures with different scales and other geometric characteristics have great differences in the impact on the mechanical properties and seepage process of the rock mass. Coupled with the influence of uneven distribution of external ground stress, the grouting effect of rock cracks is not outstanding under complex construction conditions.

[0003] For example, in engineering construction, it is often encountered that rock cracks have inconsistent openings, especially some cracks are too narrow, or rocks are deeply sealed, so that mortar seepage often fails to enter narrow cracks or partial cracks during grouting reinforcement. The air in the inner space cannot be exhausted, and the mortar cannot be poured in. Obviously, the traditional grouting technology still has great limitations.

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