Underground tunnel hanging-up assembling supporting construction

A technology for supporting structures and underground roadways, which is applied in the direction of underground chambers, tunnels, tunnel linings, etc., can solve the problems of increasing construction volume, wasting support materials, increasing the size of the roadway section, and avoiding damage and reducing support pressure. Reduced effect

Inactive Publication Date: 2008-02-06
马善泉
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

In this way, the section size of the roadway will be increased, the support

Method used

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  • Underground tunnel hanging-up assembling supporting construction
  • Underground tunnel hanging-up assembling supporting construction

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Embodiment Construction

[0020] As shown in Figure 1, the hanging assembled support structure of the present application is assembled into a support layer by eleven support plates 1, and each support plate 1 is hung on the roadway surrounding rock 3 with anchor rods 2, two Expansion joints 4 are left between adjacent supporting plates 1, and the width of the expansion joints 4 depends on the deformation of the roadway, and elastic waterstop strips 5 are pressed in the expansion joints 4.

[0021] The reinforced concrete plate 6 shown in Fig. 2, Fig. 3, and Fig. 4 is a rectangular arcuate body, and its arcuate surface should adapt to the cross-sectional shape of the roadway. There are three anchor holes 7 on its longitudinal axis for anchor rod hoisting. The peripheral end surface is stepped 8, which is used for overlapping between adjacent ones; structural steel bars 9 are arranged inside to increase the strength. Its size is suitable for manual installation and installation, generally 400×(600-800)mm...

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Abstract

The present invention relates to a supporting and protecting structure for an underground laneway in hanging and assembling way. the supporting and protecting structure is characterized in that a plurality of supporting and protecting plates are assembled into a supporting and protecting layer; each supporting and protecting plate is hung over the wall rock by a roof bolt; a flexible gap is kept between two adjacent plates; the width of the flexible gap is determined by the size of the laneway; the bigger the laneway deforms, the wider the flexible gap is; a flexible sealing strip is pressed into the flexible gap; the present invention has the beneficial effects that every supporting and protecting plate is hung by the roof bolt, which takes fully advantages of the supporting and protecting of the roof bolt that the wall rock is fixed together by the roof bolt and the supporting and protecting plates are hung over the wall rock by the roof bolt, thereby playing in a hanging role; the plate structure is constructed easier than the one-whole structure; the flexible gap is kept between two adjacent plates, and during the deforming of the wall rock, the gaps between the plates are contracted to release a part of the ground pressure, which changes the rigid supporting and protecting into the flexible supporting and protecting, thereby conforming to the modern flexible supporting and protecting principle; due to the release of the ground pressure, the supporting and protecting pressure is reduced, thereby avoiding the damage of the supporting and protecting layer.

Description

technical field [0001] The invention relates to underground roadway supporting materials. Background technique [0002] At present, there are various forms of underground roadway support, such as concrete masonry, shotcrete support, bolt support, anchor net shotcrete support and so on. The common feature of these support methods is that the support layer is a complete and hard whole, so it is called rigid support. When the underground roadway is deformed, the strong underground pressure will cause damage to the rigid support fracturing. Therefore, the current solution is to increase the support thickness or lay steel bars to resist underground pressure. In this way, the section size of the roadway will be increased, the supporting materials will be wasted, and the construction volume will be increased. Contents of the invention [0003] The purpose of this application is to solve the current shortage of rigid support for underground roadways, and to provide a hanging an...

Claims

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Application Information

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IPC IPC(8): E21D11/04E21D11/08E21D21/00
Inventor 马善泉曲来印赵金桥王海永王洪立鲍伟
Owner 马善泉
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