Dynamic loading tester of tunnel power test system

Abstract

The invention discloses a dynamic loading tester of a tunnel power test system. The tester comprises a testing stand, a drop hammer, a drop hammer elevating device, a drop hammer controller and a data monitoring device; the testing stand is internally provided with a tunnel, the top end surface of the testing stand is provided with a left guide post and a right guide post in parallel with the left guide post, the left and right guide posts are hollow, a bearing column is arranged between the left and right guide posts, and the drop hammer can slide up and down along the left and right guide posts; the drop hammer controller comprises a bearing column transient pressure-relief stress wave applying mechanism and a mechanism preventing the drop hammer from bumping the bearing column secondarily; The data monitor comprises a data collection and analysis mechanism, a camera mounted in the periphery of the testing stand, and a digital camera mounted in the testing stand. The dynamic loading tester can be used to complete transient pressurizing and transient pressure relief test in the tunnel power test, and data is measured, transmitted and stored in real time to display bearing deformation condition of the tunnel.

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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