Construction method for installing support rapidly by using rear chambering self-locking anchor rod

A technology of self-locking bolts and construction methods, which is applied in the installation of bolts, earth-moving drilling, mining equipment, etc., can solve the problems of inconvenient fixing, long construction time, and difficult quality assurance, and achieve the convenience of mechanized construction and installation speed. Fast, quick to install effects

Active Publication Date: 2010-05-12
WUDA JUCHENG STRUCTURE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects and deficiencies of the existing post-expanding self-locking bolt installation and construction time are long, the fixing is not convenient enough, and the quality is difficult to guarantee. Construction method of fast installation and support of hole self-locking bolt

Method used

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  • Construction method for installing support rapidly by using rear chambering self-locking anchor rod
  • Construction method for installing support rapidly by using rear chambering self-locking anchor rod
  • Construction method for installing support rapidly by using rear chambering self-locking anchor rod

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with accompanying drawing description and specific embodiment:

[0024] see Figure 1-Figure 5 , 1. a construction method for fast installation and support of rear reaming self-locking bolt, comprising the following steps:

[0025] A. Use high-pressure air to remove the residue in the anchor hole 4;

[0026] B. Insert the wedge 2 of the anchor rod and the anchor end 1 in the rod body to the bottom of the anchor hole 4; and install the reaming anchor rod installer on the exposed end 15 of the rod in the anchor hole 4;

[0027] C. According to the axial stroke of the anchor rod after the anchor end 1 is stretched out in the rod body, the sliding distance of the slide rod seat 53 of the rear reaming anchor rod installer on the slide rod 55 is calibrated;

[0028] D. Install the drill rod 16 on the air pick, insert the drill rod 16 into the drill rod blind hole 51 of the straight rod 5 on the r...

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Abstract

A construction method for installing a support rapidly by using a rear chambering self-locking anchor rod comprises the following steps: A. removing residues in an anchor hole (4) by using high pressure air; B. inserting the rear chambering self-locking anchor rod in the bottom of the anchor hole (4); and installing a rear chambering anchor rod installer at the external part of the anchor hole (4); C. calibrating the sliding distance of a sliding bar base (53) of the rear chambering anchor rod installer on a sliding bar (55); D. installing a drill rod (16) on an air pick, inserting the drill rod (16) into the rear chambering anchor rod installer, starting the air pick, propelling the anchor rod to the bottom part of the anchor hole (4), and until the anchor rod is propelled to the final point of the calibrated distance, stopping the air pick, and disassembling the rear chambering anchor rod installer; and E. installing a cushion block at the exposing end (15) of the anchor rod body and locking the cushion block by nuts. The method is convenient for mechanized construction, has high installation speed, large anchoring force and stable anchoring quality, is convenient for monitoring and detection, good in adaption on the obliquely arranged anchor rod, and provides feasible implementation specifications for the wide application of the rear chambering self-locking anchor rod.

Description

technical field [0001] The invention relates to a construction method for locking and installing an anchor rod in a rock anchor hole, in particular to a construction method for rapidly installing and supporting a post-expanding self-locking anchor rod. Background technique [0002] During the excavation of large caverns in the rock mass, hard bedrock will be encountered. When the hard bedrock is in a state of three-dimensional high pressure stress, it will not be damaged. Once the excavation is exposed, it will cause rockburst due to unloading. pose a threat to construction safety. An effective measure to prevent rockburst is to install bolts on the excavated new bedrock surface for support. For the hard rock foundation in the high-pressure stress field, to make the support effective and resist the occurrence of rockburst, the bolt must be installed quickly, and the prestress should be applied immediately to provide sufficient pressure on the rock surface. [0003] The app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D21/00
Inventor 高作平周剑波
Owner WUDA JUCHENG STRUCTURE CO LTD
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