Simple mould bag concrete bracket simulating device and test device thereof

Abstract

The invention discloses a simple mould bag concrete bracket simulating device and a test device thereof. A bracket mould, a simulated surrounding rock and a force transferring device are placed in restraining device sequentially; the bracket mould takes a single-wall corrugated pipe which is bent into a semicircle as an outer shell; a grouting hole is formed in the top of the single-wall corrugated pipe outer shell; a steel plate seat of the restraining device is welded with H-shaped steel; coordinate paper and a tempered glass plate are placed along the inner surface of the H-shaped steel in sequence; a loading plane is arranged at the top of an arch-shaped truss of the force transferring device; a cushion block with a groove is placed in a manner of adhering to the loading plane. The simple mould bag concrete bracket simulating device disclosed by the invention has easiness in material taking, and is easy to machine, low in cost, accurate in mounting and convenient to load and unload; a deforming process of the surrounding rock and a damaging process of the mould can be observed clearly in a test process; the influence of the relative factors on the bearing capacity, the overall stress, the surrounding rock deformation and the damage morphology of a mould bag concrete bracket can be analyzed comprehensively and effectively.

Description

technical field [0001] The invention relates to a simple mold bag concrete support simulation device and a test method thereof, which belong to the field of roadway support similar simulation tests. Background technique [0002] With the continuous development of economy and technology, my country's demand for coal resources is increasing day by day, making coal mining develop into the deep mining stage. With the increase of mining depth, the stress on the roadway is also increasing. Under the action of high stress, the rocks around the roadway are prone to deformation, softening or expansion, and are prone to damage due to insufficient strength. Therefore, the roadway support problem has become one of the important issues affecting and restricting the deep mining of coal resources in our country. [0003] At present, the technologies used for deep roadway support include U-shaped steel arch retractable support, mining H-shaped steel rigid support, and shrinkable steel pipe...

AI Technical Summary

Problems solved by technology

However, there is no simple test device that can systematically and comprehensively study the bearing capacity, overall force, surrounding rock deformation and failure form of the bag concrete support and its influencing factors.

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