A dynamic loading test equipment for roadway dynamic test system

Abstract

The invention discloses a dynamic loading test equipment of a roadway dynamic test system, which comprises a test bench, a drop weight, a drop weight lifting device, a drop weight control device and a data monitoring device; There are left and right guide columns parallel to each other. The left and right guide columns are both internally hollow. There is a pressure-bearing column between the left and right guide columns. The drop hammer can slide up and down along the left and right guide columns; The drop hammer control device includes a stress wave application mechanism for transient pressure relief of the pressure column and a mechanism for preventing the secondary impact of the drop hammer on the pressure column; the data monitoring device includes a data collection and analysis mechanism, cameras, digital cameras installed around and inside the test bench. camera. The present invention can complete the instantaneous pressurization and instantaneous pressure relief tests in the roadway dynamic test, and display the stress deformation of the roadway in real time through data measurement, transmission and storage.

Description

technical field [0001] The invention belongs to the field of roadway dynamic test systems, and in particular relates to dynamic loading test equipment of the roadway dynamic test system. Background technique [0002] During the excavation and advancement of the deep underground roadway, it may cause the fracture of the overlying rock mass in the roadway, and may even face rock dynamic disasters such as rockburst and rock burst. These phenomena will cause the rock to burst loose, peel off, eject or even throw. At present, the use of similar material simulation test methods has been widely considered to be the most important method for studying the deformation, movement and failure laws of roadways during the stress process of roadways, especially for rock mechanics problems involving various mechanical behaviors such as elastoplasticity, crushing, and collapse. An effective research method. However, in laboratory similar material simulation large-scale test devices, the road...

AI Technical Summary

Problems solved by technology

However, in the large-scale test device for simulating similar materials in the laboratory, the roadway loading process is generally treated as a static or quasi-static process, and when the roadway is subjected to the above-mentioned transient dynamic load, the existing test devices often cannot realize

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