Device and method for testing bearing capacity of mining steel belt

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 that the deformation and damage of the steel strip cannot be truly reflected, and the stress situation of the steel strip cannot be truly simulated. Test difficulties and other problems, to achieve the effect of high bearing strength, accurate testing and analysis, and low cost

Active Publication Date: 2020-02-14
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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  • Device and method for testing bearing capacity of mining steel belt
  • Device and method for testing bearing capacity of mining steel belt
  • Device and method for testing bearing capacity of mining steel belt

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Embodiment Construction

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

[0047] Such as 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...

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Abstract

The invention discloses a device and a method for testing the bearing capacity of a mining steel belt. The device comprises a base, a loading frame, a box body and a measured steel belt component, thebox body and the base are fixed into a whole through a base bolt set, the loading frame is inserted below the box body in a penetrating mode and located above a base bottom plate, horizontal movementof a loading frame stand column is limited by a hoop fixed to the side plate of the box body, and the loading frame can only move up and down in the vertical direction. The method comprises the following steps of: adding a concrete test block or a rock test block into a box body, covering the test block with a steel belt, allowing an anchor rod to penetrate the central hole of the steel belt, mounting a tray and a nut, locking the other end of the anchor rod at the lower beam through hole of the lower beam bottom plate of the loading frame through the nut; and arranging a loading device between pressing plates of a testing machine. The device can truly simulate the actual stress condition of the steel belt, and can truly reflect the deformation and damage conditions of the steel belt in aroadway; and moreover, the method can be used for simulating and analyzing the failure condition of the mining steel belt when the mining steel belt is applied to a 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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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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