Anchor stock mechanical response test device under dynamic and static combined load and using method thereof

Abstract

The invention discloses an anchor stock mechanical response test device under dynamic and static combined load and a using method thereof. The device comprises a vertical frame, a static loading mechanism and a dynamic loading mechanism. The vertical frame is provided therein with an anchor stock to be tested. The upper end of the anchor stock to be tested is fixedly connected with the top of thevertical frame. The lower end of the anchor stock to be tested extends vertically downwards. The static loading mechanism is disposed at the lower part of the vertical frame, is connected with the lower end of the anchor stock to be tested, and is configured to apply static load to the anchor stock to be tested. The dynamic loading mechanism is arranged below the static loading mechanism and configured to apply dynamic load to the anchor stock to be tested. The anchor stock mechanical response test device realizes a mechanical response test of the anchor stock to be tested under the combined dynamic and static load. The static load and the dynamic load can be controlled manually and can be adjusted in real time. In addition, the anchor stock mechanical response test device is simple, stable and reliable in test operation, and has great significance on the support design of deep mines and tunnels.

Description

technical field [0001] The invention relates to the technical field of mechanical response testing devices for bolts, in particular to a testing device for bolts under dynamic and static combined loads and a method for using the same. Background technique [0002] my country's coal reserves buried below 1000m are 2.95 trillion tons, accounting for about 53% of the total coal resources. Deep coal seams will surely become the main battlefield of my country's coal mining. According to incomplete statistics, more than 50 pairs of mines have been mined below 1,000 meters in my country. During the mining process, despite the adoption of greater support strength, accidents such as chipping, roof fall, and dynamic disasters such as rock bursts have increased significantly. , seriously restricting the safe and efficient mining of deep coal resources. [0003] Practice has shown that after entering deep mining, the phenomenon of dynamic load disturbance in the mine increases, and the ...

AI Technical Summary

Problems solved by technology

[0004] Existing bolt (cable) testing equipment and methods mostly test the mechanical response of the bolt (cable) under the action of pure static load or pure dynamic load, and it is difficult to obtain However, in the field engineering, the bolt has been subjected to a certain static load before being disturbed by the dynamic load, which makes it difficult for the test results to provide accurate basis for the field.

Moreover, the existing test equipment is mostly aimed at the mechanical performance test of a single bonded anchor rod under a single anchoring method (ie, end anchor), and it is difficult to test the mechanical properties of anchor rods under different types and different anchoring methods, and there are obvious limitations. sex

In addition,...

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