Rock impact loading-unloading confining pressure testing system and using method thereof

Abstract

The invention discloses a rock impact loading-unloading confining pressure testing system and a using method thereof. The rock impact loading-unloading confining pressure testing system comprises a bearing frame unit, an axial pressure loading unit, an impact loading unit and a confining pressure loading unit and further comprises a confining pressure unloading unit, a loading control unit, a monitoring unit and a data analysis unit; the bearing frame unit comprises a base, upright columns and a beam, the upright columns are vertically arranged at two sides of the upper surface of the base, and the beam is horizontally and fixedly arranged at the upper parts of the upright columns; the axial pressure loading unit is fixedly arranged on a middle position of the upper surface of the base andis used for applying an axial pressure from bottom to top to a test piece; the impact loading unit is fixedly arranged on the beam and is used for applying an axial impact load from top to bottom tothe test piece; and the confining pressure loading unit is arranged between the axial pressure loading unit and the impact loading unit and is used for applying confining pressure within a horizontalplane to the test piece. The rock impact loading-unloading confining pressure testing system provides more accurate test data support, the confining pressure unloading pressure can be continuously regulated, an unloading process is automatically controlled, and the testing operation is simple.

Description

technical field [0001] The invention relates to the technical field of roadway surrounding rock support, in particular to a rock impact loading-unloading pressure test system and a use method thereof. Background technique [0002] Rockburst phenomenon is a special form of mine pressure manifestation, which can be described as: mining (mining face) induces high-strength coal (rock) deformation energy to be released instantaneously, causing strong surrounding rock vibration and vibration in the corresponding mining space. The phenomenon of extrusion is one of the most serious natural disasters in the process of coal mine production. Generally, there is no obvious macroscopic omen before the occurrence, and the coal rock mass is thrown out suddenly, sharply and violently, causing equipment damage, roof caving, Roadway blockage and casualties have seriously affected the safe and efficient production of coal mines. At present, with the continuous increase of coal mining depth an...

AI Technical Summary

Problems solved by technology

However, there is no test device and method for studying the mechanical properties of rock under the condition of impact loading and unloading confining pressure, and the existing test devices and methods need further breakthroughs

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