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Self-adaptive feet-lock bolt integrated device and application method thereof

A lock-foot anchor and self-adaptive technology, which is applied in the installation of anchor bolts, earth drilling, mining equipment, etc., can solve the problems of neglect, the addition of lock-foot anchors to the load-bearing area of ​​the wall foot does not form a complete set, etc., to increase friction, The prefabricated formwork is convenient and fast, ensuring the effect of effective bearing performance

Inactive Publication Date: 2015-08-12
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at the construction site, most lock-foot bolts are constructed based on construction experience, and no prestress is applied; no lock-foot bolts are installed at different angles according to the surrounding rock level; area to control the initial support settlement; the construction site has not formed a complete technical system for enlarging the load-bearing area of ​​arches and wall feet, and adding lock-foot anchors

Method used

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  • Self-adaptive feet-lock bolt integrated device and application method thereof
  • Self-adaptive feet-lock bolt integrated device and application method thereof
  • Self-adaptive feet-lock bolt integrated device and application method thereof

Examples

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Embodiment Construction

[0030] The present invention will be further described in conjunction with the examples. It should be noted that the following descriptions are only for explaining the present invention and not limiting its content.

[0031] Such as figure 1 , 2 As shown in , 3, a kind of self-adaptive locking foot bolt integrated device device, comprises steel arch frame 1 and arch foot backing plate 2 welded by reinforcing rib 4, and the side of described arch foot backing plate 2 is provided with scale 3, The anchor backing plate 9 is provided with four symmetrical holes 11, the anchor backing plate 9 is welded with the steel arch 1, the elastic sphere nut 9 includes a rubber sphere 7 and a hex nut 8, and the single full thread Type lock foot anchor rod 5 or double thread type lock foot anchor rod 6 apply prestress through elastic sphere nut 9, and contact with anchor rod backing plate 9.

[0032] When constructing the integrated device of self-adaptive locking foot and anchor rod, the fo...

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PUM

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Abstract

The invention provides a self-adaptive feet-lock bolt integrated device applied to the tunnel stepwise excavation process and an application method thereof so that effective control of broke and weak surrounding rock tunnel large deformation is realized. A large-area arch springing bearing plate is arranged at the steel arch springing part so that arch springing bearing area is enlarged and arch springing bearing force is increased; integral settlement of the tunnel is measured by an arch springing bearing plate slide surface scale; feet-lock bolts are self-adaptive to different angles of installation via elastic ball nuts; meanwhile, the size of the applied pre-stress can be reflected by the amount of compression of the elastic rubber ball nuts, and impact energy is absorbed simultaneously so that preliminary supporting of the tunnel is enabled to be more systematical and safer, and preliminary supporting time is shortened by the prefabricated form.

Description

technical field [0001] The invention relates to an integrated device for self-adaptive locking feet and anchor rods and an application method thereof. Background technique [0002] my country is a country with a vast territory and complex geological conditions. With large-scale, modern and high-standard urbanization construction, transportation engineering construction, water conservancy and hydropower engineering construction, and mineral mining, the number of underground engineering construction in my country is increasing. In large-scale infrastructure construction, tunnel engineering has developed rapidly. The number of tunnels is increasing and the length is increasing. With the expansion of the number of tunnel projects and the scale of construction, weak strata will inevitably be encountered. When the tunnel passes through the weak ground, due to the poor stability of the surrounding rock and the artificial misjudgment of the stability of the surrounding rock of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D21/00E21D20/00
CPCE21D21/0026E21D20/00
Inventor 李术才王健华李利平林春金张乾青许振浩石少帅周宗青
Owner SHANDONG UNIV
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