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Grouting support anchor cable equipment for impact of drift ice on water diversion tunnel in cold and arid regions

A technology for water diversion tunnels and supporting anchor cables, applied in mining equipment, installation of anchor rods, hydroelectric power generation, etc., can solve problems such as tunnel collapse, anchor cable failure, cracks, etc., and achieve the effect of preventing cracks from failing

Active Publication Date: 2022-07-08
NAT INST OF NATURAL HAZARDS MINISTRY OF EMERGENCY MANAGEMENT OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Normally, the anchor cable and the concrete formed by grouting provide a constant support force from the soil layer to the support plate, but in the cold and arid region, due to the influence of drift ice, the drift ice will have an impact force on the support plate, while Due to the poor axial impact resistance of the anchor cable concrete column, cracks are prone to occur in the long run, resulting in the failure of the anchor cable and the risk of tunnel collapse

Method used

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  • Grouting support anchor cable equipment for impact of drift ice on water diversion tunnel in cold and arid regions
  • Grouting support anchor cable equipment for impact of drift ice on water diversion tunnel in cold and arid regions
  • Grouting support anchor cable equipment for impact of drift ice on water diversion tunnel in cold and arid regions

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Embodiment Construction

[0022] see figure 1 , In the embodiment of the present invention, the grouting support anchor cable equipment for the impact of drift ice on the water diversion tunnel in cold and arid regions includes an outer pipe 1, and the outer pipe 1 is movably provided with an inner pipe 2 running through its both ends, so There is a gap between the outer wall of the inner tube 2 and the inner wall of the outer tube 1, one end of the inner tube 2 is fixed with a drill bit 3, and the maximum diameter of the drill bit 3 is larger than the diameter of the outer tube 1, and the other end of the inner tube 2 A connecting plate 4 that can be connected to the support body is fixed, and one end of the outer pipe 1 close to the drill bit 3 is fixed with a slurry sleeve 5 whose side wall penetrates into the inner pipe 2, and the slurry sleeve 5 is connected to the inner pipe 2. Active connection.

[0023] see figure 2 In this embodiment, the inner wall of the pulping sleeve 5 is in contact wit...

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Abstract

The invention discloses a grouting support anchor cable device for the impact of drifting ice on a water diversion tunnel in cold and arid regions, comprising an outer pipe, wherein an inner pipe is movably arranged through the two ends of the outer pipe, and the outer wall of the inner pipe is connected with the inner pipe of the outer pipe. There is a gap between the walls, one end of the inner tube is fixed with a drill bit with a maximum diameter larger than the outer tube, the other end of the inner tube is fixed with a connecting plate that can be connected to the support body, and the outer tube is fixed at one end close to the drill bit Compared with the prior art, the concrete column formed by the anchor cable grouting of the present invention is only subjected to tension and spring buffering. Pressure, not subject to impact force, to prevent the concrete column from cracking and failing in repeated collisions.

Description

technical field [0001] The invention relates to the technical field of tunnel support fittings, in particular to a grouting support anchor cable device for the impact of drift ice on water diversion in cold and arid regions. Background technique [0002] The water diversion tunnel is an underground water conveying structure connecting the shore-type pressurized water inlet of the hydropower station and the surge chamber (or the pressure pipeline of the hydropower station without a surge chamber). In order to prevent rock collapse and water seepage, the tunnel body is usually supported by grouting anchor cable guard plate structure. Under normal circumstances, the concrete formed by anchor cables and grouting provides constant support force from the soil layer to the support plate, but in cold and arid regions, due to the influence of drift ice, the drift ice will produce impact force on the support plate, while Due to the poor axial impact resistance of the anchor cable con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D21/00
CPCE21D21/0026Y02E10/20
Inventor 黄帅刘传正李鹏梁辉李昱李欣蔚翟淑凤周星源章小龙肖子亢
Owner NAT INST OF NATURAL HAZARDS MINISTRY OF EMERGENCY MANAGEMENT OF CHINA
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