An indoor sample preparation device for repairing cracked rock samples based on slurry

Abstract

The invention relates to an indoor sample preparation device for preparing a fracture rock sample based on grout repair and belongs to the field of geotechnical engineering. The device is composed of an outer frame, a horizontal adjusting bolt, a vertical adjusting bolt, a guide groove, a die and a pressing plate. A die hole of the die is round or rectangular. By adjustment of the horizontal adjusting bolt, the device adapts to grout repair of the fracture rock sample at a specific width and within an allowable error range; and by adjustment of the vertical adjusting bolt, the indoor sample preparation device adapts to grout repair of the fracture rock sample at a specific height and within an allowable error range. Scales on the inner wall of the main frame of the device and a lug scale of the pressing plate simulate a main scale and an auxiliary scale of a vernier caliper respectively, and the accuracy of a thickness of a grout repair layer can be controlled. The device is reasonable in structure, simple to operate and high in adaptability. The rock sample based on grout repair can be obtained conveniently, safely and quickly through the device.

Description

[0001] The invention relates to an indoor sample preparation device for repairing cracked rock samples based on slurry, and belongs to the technical field of geotechnical engineering. Background technique [0002] As we all know, there are a large number of structural planes in natural rock mass, which destroy the integrity and continuity of rock mass and control the mechanical properties of rock mass. In engineering, cement slurry is often used to strengthen rock joints, hoping to increase the strength of rock joints. After the cement slurry is poured into the joint fissures and condenses, a composite structure is formed. Its deformation and strength characteristics are not only controlled by the mechanical properties of the two materials themselves, but also affected by the surface morphology of the joints, and also by the difference between the two materials. The role of cementing force between grouting joints determines the complexity of the mechanical properties of grouti...

AI Technical Summary

Problems solved by technology

[0007] Because the indoor sample preparation based on the repair of horizontal cracked rock samples based on grout is very simple, but the indoor sample preparation based on the repair of triaxially compressed obliquely fractured rock samples based on grout is difficult, and there is no such device at present. Shear test of cracked rock samples repaired by grout to study the effect and mechanism of grout repair

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