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Anchor rod-anchor cable support system capable of bearing tunnel large deformation and application method

A large-deformation and anchor technology, which is applied in the installation of anchors, earthwork drilling, mining equipment, etc., can solve the problems of anchor failure, loss of support capacity, large deformation of surrounding rocks, etc., and improve self-bearing capacity , the effect is good, and the effect of controlling the deformation of the surrounding rock

Pending Publication Date: 2019-10-18
CHINA RAILWAY ERYUAN ENG GRP 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 problem existing in the prior art that in large deformation tunnels, due to the excessive deformation of the surrounding rock, the ultimate bearing capacity of the bolt is exceeded, resulting in tensile failure of the bolt, failure of the bolt, and loss of support. In view of the above deficiencies in capacity, a bolt-cable support system and method of use that can withstand large deformations of tunnels are provided

Method used

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  • Anchor rod-anchor cable support system capable of bearing tunnel large deformation and application method
  • Anchor rod-anchor cable support system capable of bearing tunnel large deformation and application method
  • Anchor rod-anchor cable support system capable of bearing tunnel large deformation and application method

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Embodiment 1

[0077] Such as figure 1 , 2 , 5-12, a bolt-cable support system that can withstand large deformations of tunnels according to the present invention includes several bolt-cable units A and several cable anchorages B, each The anchor rod-cable unit A includes a hollow anchor rod 10 , an anchor cable 20 and an end anchor 30 of a rotary type anchor first and inject later.

[0078] Such as Figure 5 and 11 As shown in , 12, the rotary type first anchor and then inject hollow anchor rod 10 includes a hollow front anchoring section rod body 11 and a hollow rear anchoring section rod body 12, the front anchoring section rod body 11 and the rear anchoring section rod body 12 Connected by a connector with holes 13, the outer wall of the front anchoring section rod body 11 is provided with a pressure bearing plate 14, and the pressure bearing plate 14 can be used for the mortar anchor body of the rear anchoring section rod body 12 to withstand pressure. As far as the anchor body of t...

Embodiment 2

[0091] Such as Figure 3-11 As shown, a bolt-cable support system that can withstand large deformation of the tunnel described in the present invention differs from Embodiment 1 in that in this embodiment, such as image 3 and 4 As shown, the passing part of the anchor cable 20 of the two anchor rod-anchor cable units A arranged at intervals is connected by one anchor cable anchor B and can be tensioned, which is applicable to a large deformation range greater than 1.5m working condition.

Embodiment 3

[0093] Such as Figure 1-11 As shown, a method for using the anchor rod-cable support system that can withstand large deformation of the tunnel according to the present invention, the application of the support system as described in embodiment 1 or embodiment 2, the method of use includes the following steps :

[0094] A. Anchor hole forming, in the anchor rod-anchor cable unit A, the rotary type anchor first and then inject hollow anchor rod 10 and the end anchorage 30 are anchored, and are set through the rotary type anchor first and then inject hollow anchor rod The anchor cable 20 of 10 is inserted into the anchor hole to the bottom position of the anchor hole together;

[0095] B. Connect the connecting sleeve 40 to the post-anchoring rod body 12 through the internal thread, and then guide the anchor cable 20 from the side circular opening of the connecting sleeve 40 to the rotary anchor first and then inject Outside the hollow anchor rod 10, the other end of the conne...

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Abstract

The invention discloses an anchor rod-anchor cable support system capable of bearing tunnel large deformation and an application method. The support system comprises a plurality of anchor rod-anchor cable units and a plurality of anchor cable anchorage devices. Each anchor rod-anchor cable unit comprises a rotation type first-anchoring post-pouring hollow anchor rod, an end portion anchorage device and an anchor cable, wherein the rotation type first-anchoring post-pouring hollow anchor rod is used for being arranged in an anchor hole, a front anchoring section rod body, located on the inner side of the anchor hole, of the rotation type first-anchoring post-pouring hollow anchor rod can be anchored through a resin anchoring agent, and a rear anchoring section rod body can be anchored through grouting; the end portion anchorage device is arranged at the end, located on the inner side of the anchor hole, of the rotation type first-anchoring post-pouring hollow anchor rod; and the anchorcable is arranged in the rotation type first-anchoring post-pouring hollow anchor rod in a penetrating manner, one end of the anchor cable is anchored to the end portion of the rotation type first-anchoring post-pouring hollow anchor rod through the end portion anchorage device, and the other end of the anchor cable penetrates out of the anchor head end of the rotation type first-anchoring post-pouring hollow anchor rod. The penetrating-out parts of the anchor cables of every two anchor rod-anchor cable units are connected through one anchor cable anchorage device and can be tensioned.

Description

technical field [0001] The invention relates to the field of tunnel support, in particular to an anchor rod-anchor cable support system capable of withstanding large deformation of the tunnel and a use method thereof. Background technique [0002] Anchor is a tension rod structure for structural anchorage or rock and soil reinforcement. It is divided into prestressed anchor and non-prestressed anchor. Prestressed anchor is an active support type that can transmit tension to the stable In the suitable or suitable rock and soil mass, the structure and the rock and soil mass are anchored together or the rock and soil mass is reinforced. The role of rock and soil; bolt support has been widely used in tunnels and underground engineering, slopes, foundation pits and other projects. Bolt support is an important part of bolt support, which improves the support efficiency of surrounding rock. The load-bearing ratio of various supports is optimized, which ensures the safety of the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D21/00E21D20/02
CPCE21D21/0026E21D21/0046E21D20/021E21D20/025
Inventor 胡炜李奎谭信荣蒋尧喻渝陶伟明张永平谭永杰赵万强郑长青徐骏高柏松郑小艳黎旭卿伟宸
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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