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Quantitative yielding node applicable to underground engineering support lagging jack

An underground engineering and arch frame technology, which is applied to underground chambers, shaft equipment, shaft linings, etc., can solve the problems that the device has not been reported yet, and achieve the effect of simple structure, easy operation, simple and flexible assembly

Active Publication Date: 2013-01-02
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are quite a few pressure-yielding structures used for underground engineering support, but there is no report on the device that can realize the quantitative pressure-yielding of the support arch

Method used

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  • Quantitative yielding node applicable to underground engineering support lagging jack
  • Quantitative yielding node applicable to underground engineering support lagging jack
  • Quantitative yielding node applicable to underground engineering support lagging jack

Examples

Experimental program
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specific Embodiment approach

[0028] With reference to accompanying drawing, preferred embodiment of the present invention is:

[0029] Such as figure 1 As shown, the quantitative pressure relief node of the present invention is composed of arch frame 1, quantitative pressure relief device 2, sleeve pipe 3 and retaining ring 4, and quantitative pressure relief device 2 is installed between the ends of two arch frames 1. The ends are connected with sleeve 3. First slide the sleeve 3 to the side of the arch 1 without the retaining ring 3, free the installation space for the quantitative pressure relief device 2, then install the quantitative pressure relief device 2, and then slide the sleeve 3 down to the retaining ring 4 position, that is, the installation of the yielding node has been completed.

[0030] When the force on the arch 1 reaches the set limit, the quantitative yielding device 2 begins to deform obviously, and the connected ends of the arch 1 are squeezed and moved into the casing 3 to realiz...

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Abstract

The invention relates to a quantitative yielding node applicable to an underground engineering support lagging jack. The quantitative yielding node is formed by a lagging jack, a quantitative yielding device, a sleeve and a baffling ring; and the whole appearance shape of the quantitative yielding node is columnar or arc-shaped and the shape of the cross section is circular. The quantitative yielding node is mounted at a spandrel part, a vault part, a laneway side part or a bottom plate part of the lagging rack. The device is simple in structure and is convenient and flexible in installation; a yielding moment and a yielding amount are controllable and a plurality of yielding modes can be selected; the application range is wide; and with regard to various support lagging jacks with different shapes, sizes, cross section shapes and arc degrees, such as a mineral U-shaped steel lagging jack, circular steel pipe concrete lagging jacks with various section shapes and sizes and the like, the quantitative yielding node can be selected. The quantitative yielding node can be used for connecting the lagging jack for an underground engineering support and is particularly suitable for connecting a deep roadway support lagging jack.

Description

technical field [0001] The present invention relates to a quantitative yield point for supporting arches in underground engineering, in particular to a support for underground engineering such as chambers, roadways, tunnels, etc. that are difficult to support under complex conditions such as deep or soft rock. The yield point of the arch. Background technique [0002] The research results of the interaction between roadway support and surrounding rock prove that the support strength is the key factor to control the violent deformation of the roadway surrounding rock. Only when the support strength is greater than 0.3MPa, can the violent deformation of the roadway be effectively controlled and adapt to the advance and lateral The effect of support pressure. For complex and difficult-to-support roadways, it is difficult to control the violent deformation of surrounding rock only by relying on the supporting capacity of a single anchor rod or bracket itself, and the bearing ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/18
Inventor 李为腾王琦李术才张波李海燕王洪涛王德超李智张红军
Owner SHANDONG UNIV
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