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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.

Active Publication Date: 2021-08-20
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the steel belt, its size is relatively large, and the test becomes more difficult accordingly. The existing test equipment cannot truly simulate the actual stress of the steel belt, so it cannot truly reflect the deformation and damage of the steel belt in the roadway situation

Method used

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

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Embodiment Construction

[0046] The present invention will be further described below in conjunction with accompanying drawing.

[0047] like Figure 1 to Figure 10 As shown, the present invention provides a mining steel strip bearing capacity testing device, comprising a loading frame B, a tested steel strip assembly D, a box body C and a base A arranged vertically from top to bottom;

[0048] The base A includes a base plate A1, two pairs of columns A2 fixedly connected to the upper part of the base plate A1 along the length direction, two connecting plates A3 respectively fixedly connected to the upper ends of the two pairs of columns A2 and a base bolt group composed of a plurality of bolts A5; the connecting plate A3 is provided with a connecting plate hole A31 for the base bolts in the base bolt group A5 to pass through;

[0049] The loading frame B includes an upper loading beam B1, a lower loading beam B2 and two loading columns B11, and the upper loading beam B1 and the lower loading beam B2...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/08G01N3/02
CPCG01N3/02G01N3/08
Inventor 冯晓巍魏群
Owner CHINA UNIV OF MINING & TECH
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