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Anchor cable and metal support combined complementary supporting device and method

A technology of metal brackets and support devices, which is used in vertical shaft equipment, earth-moving drilling, wellbore lining, etc., can solve the problems of maintaining the stability of the roadway and the inability of metal brackets to play the supporting advantages, saving materials, complementing defects, and increasing The effect of the support area

Inactive Publication Date: 2017-06-30
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the anchor cables and metal supports cannot give full play to their respective supporting advantages to maintain the stability of the roadway

Method used

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  • Anchor cable and metal support combined complementary supporting device and method
  • Anchor cable and metal support combined complementary supporting device and method
  • Anchor cable and metal support combined complementary supporting device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] like figure 1 , 2 As shown, the present invention is used to carry out combined complementary support in the tunneling process, and the main procedures are: tunneling, hanging metal mesh 10 (installing the anchor cable 2 parts without hanging the mesh or leaving a space for installing the anchor cable tray 3 that is Can), set up U-shaped steel metal bracket 7, drill the anchor cable drill hole in the middle area of ​​the weak section of the adjacent metal bracket 7, install the anchor cable 2, the tray 3, the anchor cable transfer load beam 4, the anchor 5, and give the anchor cable Apply a pre-tightening force of 100KN to 120KN to the cable, install the tie rod body 6a in the pull rod holes on the anchor cable transfer beam 4 and the metal bracket transfer beam 9, and then add a metal mesh 10 at the position where the anchor cable 2 is installed, and then use The stud nut 6b is connected with the tie rod body 6a to realize the connection of the metal bracket load beam...

Embodiment 2

[0051] like image 3 As shown, the device of the present invention is used in a roadway where the metal mesh 10 has been packed tightly behind the wall. Its implementation method is basically the same as that of Embodiment 1. Due to its different application roadways, the installation process has changed. The specific process is: since the filling material 12 has been filled between the metal mesh 10 and the surrounding rock 1, the adjacent metal support 7 Drill a hole in the middle of the weak section, the drill hole goes deep from the outside of the metal mesh 10 to the surrounding rock 1, install the anchor cable 2, the tray 3, the anchor cable transfer beam 4, and the anchorage 5, and apply pretension to the anchor cable The force is 100KN~120KN; use the double-ended nut 6b to connect the tie rod body 6a to realize the connection between the anchor cable 2 and the metal support beam 9, the metal support short beam 8 and the metal support 7, and then apply a pre-tightening ...

Embodiment 3

[0053] as attached Figure 4 As shown, the device of the present invention is used in the roadway where the scaffolding has been completed and the surface of the surrounding rock has been sprayed. Its implementation method is basically the same as that of Embodiment 1. Due to its different application roadways, the installation process has changed. The specific process is: since the filler 12 has been filled between the metal mesh 10 and the surrounding rock 1, and the outside of the metal mesh 10 has been filled. The shotcrete layer 11 is set, and a drill hole is drilled in the middle of the weak section of the adjacent metal support 7. The drill hole goes deep from the outside of the shotcrete layer 11 to the surrounding rock 1, and the anchor cable 2, the tray 3, and the anchor cable turn are installed. Load beam 4, anchorage 5, and apply a pre-tightening force of 100KN~120KN to the anchor cable; connect the tie rod body 6a with a stud nut 6b to realize the transfer of the ...

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Abstract

The invention relates to a combined complementary support device and method for an anchor cable and a metal support for shaft engineering, comprising a U-shaped metal support, the opening of which is buckled on a metal mesh; The bracket is turned to the load beam. An anchor cable is arranged between two adjacent metal supports. One end of the anchor cable is located inside the surrounding rock, and the other end is located outside the surrounding rock. Diagonal stay rods are connected between the bracket rotating load beam and the anchor cable rotating load beam, forming a continuous V-shaped anchoring system on the installation surface of the metal mesh. In the present invention, the anchor cable directly reinforces the surrounding rock through the tray, the tensile component directly reinforces the weak part of the metal support, and the metal support independently supports the surrounding rock, and the anchor cable support area is significantly increased by connecting the tensile component with the support. The metal bracket and the anchor cable are organically combined and complementary. The device of the present invention can be used in any roadways supported by scaffolding, and can be recycled and reused if used in mining roadways.

Description

technical field [0001] The invention relates to an anchor cable and metal support combined complementary support device and method for shaft engineering, which is suitable for combined complementary reinforcement of soft rock roadways and difficult-to-support roadways in shaft engineering when anchor cables and metal brackets are used for support. Background technique [0002] The support of metal brackets and sheds has a wide range of applications, especially for repairing roadways, roadways with broken surrounding rocks, and roadways with low drilling penetration rate. Several sections with significantly larger bending moments are the weak sections when the metal support is supported. Reinforcement at the maximum bending moment can significantly reduce the maximum bending moment and significantly improve the bearing capacity of the support. [0003] The existing methods of reinforcing weak positions of metal brackets are basically through external short I-shaped steel, sho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/00E21D11/14
Inventor 陈冬冬
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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