A test device and test method for the bearing capacity of a mining steel strip

A bearing capacity and testing device technology, applied in measuring devices, using stable tension/pressure to test material strength, instruments, etc., can solve the problem of not being able to truly simulate the stress of the steel strip, unable to truly reflect the deformation and damage of the steel strip, Difficulty testing, etc.
CN110793851BActive Publication Date: 2021-08-20CHINA UNIV OF MINING & TECH
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Patent Information

Authority / Receiving Office
CN ¡ China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA UNIV OF MINING & TECH
Publication Date
2021-08-20

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Abstract

A mining steel strip bearing capacity test device and test method, the device: including a base, a loading frame, a box body and a steel strip assembly to be tested, the box body and the base are fixed as a whole by the base bolt group, and the loading frame is interspersed between the box body Down and above the bottom plate of the base, the horizontal movement of the loading frame column is restricted by the hoop fixed on the side plate of the box body, and the loading frame can only move up and down in the vertical direction. Method: Add a concrete test block or a rock test block inside the box, and cover the steel strip on the test block, pass through the center hole of the steel strip through the anchor rod and install the tray and nut, and the other end of the anchor rod is locked on the The through hole of the lower beam of the lower beam bottom plate of the loading frame; place the loading device between the pressure plates of the testing machine. The device can truly simulate the actual stress situation of the steel belt, and can truly reflect the deformation and damage of the steel belt in the roadway; the method can realize the simulation and analysis of the failure situation of the mining steel belt applied to the real coal mine roadway.
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Description

technical field

[0001] The invention belongs to the technical field of steel strip detection, in particular to a test device for the bearing capacity of a mining steel strip. Background technique

[0002] In the support engineering of coal mine roadway, the mining steel belt can provide extremely favorable and reliable support for the surrounding rock under the cooperation of the anchor rod or the anchor cable. The main types of current mine steel belts are M steel belt, W steel belt, flat steel belt and so on. The mining steel belt can greatly spread the prestress and working resistance of the anchor rod or anchor cable. In the case that the anchor system is not equipped with steel belt, the supporting effect of the anchor rod or anchor cable on the surrounding rock is through the tray and nut. However, the diameter of the tray is generally limited, and it can only act on the surface of the roadway when transferring the support force of the anchor rod or anchor cable, and ...

Claims

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