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Push-type fast anchoring and installation of bonded hollow anchor rods

A bolt and hollow technology, which is used in the installation of bolts, mining equipment, earthwork drilling and mining, etc., can solve the problems of complex and changeable geological conditions, high cost of resin bolts, difficulty in forming anchor holes, etc., and achieve control support engineering cost, improve the quality of anchor bolt construction, and optimize the effect of construction procedures

Active Publication Date: 2019-01-04
CHINA RAILWAY ERYUAN ENG GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although resin bolts are currently the dominant type of bolt support in coal roadways, they are rarely used in road / railway tunnels, hydraulic tunnels, and underground caverns, especially in railway tunnels. The main reasons are as follows: (1) Railway tunnel enclosures The rock geological conditions are complex and changeable, and it is difficult to form anchor holes with a small aperture ratio in weak and broken strata; (2) The anchor rods of railway tunnel systems are generally 2.5m to 5.0m long, and resin coils and anchor rods may not be inserted smoothly into small apertures (3) Anchor holes with a large aperture ratio require more resin anchoring agent, and the cost of resin anchor rods is higher

Method used

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  • Push-type fast anchoring and installation of bonded hollow anchor rods
  • Push-type fast anchoring and installation of bonded hollow anchor rods
  • Push-type fast anchoring and installation of bonded hollow anchor rods

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Embodiment Construction

[0018] The patent / invention of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] refer to figure 1 with figure 2 According to the present invention, the push-type fast anchoring bonded hollow anchor rod includes a hollow anchor rod body and an anchor head connected to the rear end thereof consisting of a backing plate 14 and a nut 15 . A pushing screw 21 and a converter 30 assembly are installed on the front end of the hollow anchor rod body, and the bagged anchoring agent 40 is installed on the pushing screw 21 . The pushing screw 21 has a non-self-locking external thread, and cooperates with the converter 30 to form a screw nut mechanism. The front end of the converter 30 is a chainring 31 with several bevel teeth. The front end of the pushing screw 21 has a conical head 22 , and the bagged anchoring agent 40 is installed between the bottom surface of the conical head 22 and the front end surface...

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Abstract

A push and press type bonding hollow anchor rod capable of being quickly anchored and installed can achieve the purposes that surrounding rock is quickly supported actively or passively, the anchor rod construction efficiency and construction quality are improved, and the supporting engineering cost is effectively controlled. The push and press type bonding hollow anchor rod capable of being quickly anchored and installed comprises a hollow anchor rod body and an anchor head, and the anchor head is connected to the back end of the hollow anchor rod body and composed of a base plate and a nut. A press and push threaded rod and a converter assembly are installed at the front end of the hollow anchor rod body. A bagged anchoring agent is installed on the press and push threaded rod. The press and push threaded rod is provided with a non-self-locking external thread and is matched with a converter to form a feed screw nut mechanism. A tooth disk provided with a plurality of conical teeth is arranged at the front end of the converter.

Description

technical field [0001] The invention relates to surrounding rock support for tunnels and underground engineering, in particular to a push-type hollow bolt that can be rapidly anchored and installed and bonded for surrounding rock support for tunnels and underground engineering. Background technique [0002] Anchor is a tension rod structure for structural anchorage or rock and soil reinforcement, which is divided into prestressed anchors and non-prestressed anchors. Prestressed bolts are a form of active support that transfer tension into a stable or suitable rock mass, thereby anchoring a structure to the rock mass or reinforcing it. The non-prestressed bolt is a passive support type, which can strengthen the rock and soil mass by deforming together with the rock and soil mass. Bolt support has been widely used in tunnels and underground engineering, slopes, foundation pits and other projects. Bolt support is an important part of anchor shotcrete support, which improves t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D21/00
CPCE21D21/0046E21D21/008
Inventor 赵东平李奎谭信荣吴航郑小艳喻渝高柏松王唤龙陶伟明张永平林本涛谭永杰余大龙
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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