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Telescopic anchor rod and construction method thereof

A bolt, No. 1 technology, applied in the installation of bolts, earthwork drilling, foundation structure engineering, etc., can solve the problems of bolt tensile strength not meeting the requirements, catastrophic accidents, bolt breakage, etc., to achieve Improve active support capacity, low cost, and load balancing effect

Active Publication Date: 2021-08-24
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the deformation of the chamber is large, the above anchors cannot be stretched, the tensile strength of the anchors cannot meet the requirements, and the length of the anchors is not enough to be anchored to a better rock formation, which is very easy to break the anchors and cause disasters. sex accident

Method used

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  • Telescopic anchor rod and construction method thereof
  • Telescopic anchor rod and construction method thereof
  • Telescopic anchor rod and construction method thereof

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings, so as to help understand the content of the present invention.

[0028] Such as Figure 1-3 Shown, respectively, is a schematic structural diagram of a telescopic anchor provided by the present invention, a partial enlarged view of part A, and a cross-sectional view at B-B. The telescopic anchor includes a No. 1 anchor 5 and a No. 2 anchor 6, which are connected by thread rotation. The bottom end of the No. 1 anchor 5 is provided with an internal thread, and the top of the No. 2 anchor 6 is provided with a external thread, the top of the No. 1 anchor rod 5 is provided with a grout stopper 4, a pressure gasket 3 and a grouting head 2 from bottom to top, and is fixedly connected by a nut 1 at the top. The No. 2 anchor rod 6 The bottom end is connected with a drill bit 12, the inside of the cavity of the No. 1 anchor 5 and the No. 2 anchor 6 is provide...

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Abstract

The invention discloses a telescopic anchor rod. The telescopic anchor rod comprises a first anchor rod and a second anchor rod which are rotationally connected through threads; a grout stop plug, a pressure bearing gasket and a grouting head are sequentially arranged at the top end of the first anchor rod from bottom to top and fixedly connected through a nut at the top; the bottom end of the second anchor rod is connected with a drill bit; a spiral rod piece, a drive mechanism, a first blocking piece and a second blocking piece are arranged in a cavity of the first anchor rod and a cavity of the second anchor rod; the drive mechanism is arranged between the first anchor rod and the second anchor rod and connected with the first anchor rod and the second anchor rod through the spiral rod piece; the first blocking piece and the second blocking piece are arranged in the first anchor rod and the second anchor rod correspondingly; on the two sides of the drive mechanism, the top end of the spiral rod piece is connected with the pressure bearing gasket, and the bottom end of the spiral rod piece is connected with the second blocking piece; and the drive mechanism is provided with an open hole for containing the spiral rod piece. The telescopic anchor rod is simple in structure, firm, reliable, convenient and fast to operate, adjustable in length, good in adjusting stability, high in tensile strength, wide in application range and low in cost.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a telescopic anchor rod and a construction method thereof. Background technique [0002] As the urbanization of underground engineering continues to increase, the mining depth has increased from 0-300m to 500-600m or even more than 1000m. Especially after the government put forward the requirement of building a resource-saving and environment-friendly society, more and more attention has been paid to deep underground engineering. Underground engineering refers to civil engineering that repairs and builds the rock and soil layer below the ground to develop and utilize underground space resources. Rock-soil anchoring refers to anchoring on a good rock layer by bolts to play the role of the rock mass, thereby improving the overall strength of the rock mass and ensuring the stability of the chamber and rock-soil mass. Rock and soil anchoring has the advantages of low ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D21/00E21D20/02E02D5/74E02D15/04
CPCE21D21/0026E21D21/008E21D21/0086E21D20/02E02D5/74E02D15/04E02D2600/30E02D2600/20E02D2300/0026E02D2250/003Y02A10/23
Inventor 仇圣华周成姜风王晓彤徐宇豪
Owner SHANGHAI INST OF TECH
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