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A Tunnel Inverted Arch Structure Resistant to Bass Drum

An arch structure and tunnel technology, which is applied in tunnels, tunnel linings, shaft equipment, etc., can solve the problems that the curvature of the inverted arch is not large, and the arch effect cannot be effectively used to resist buoyancy, so as to reduce buoyancy, improve the ability to resist bottom drum, The effect of increasing the ability to resist buoyancy

Active Publication Date: 2020-05-12
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are two types of inverted arches in tunnels: plain concrete and reinforced concrete, and the inverted arches are filled with plain concrete, and the tunnel section is mostly horseshoe-shaped. Since the inverted arch curvature is generally small, the inverted arch structure cannot withstand large buoyancy. The effective use of the arch effect to resist buoyancy makes the phenomenon of inverted arch drums more common

Method used

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  • A Tunnel Inverted Arch Structure Resistant to Bass Drum
  • A Tunnel Inverted Arch Structure Resistant to Bass Drum
  • A Tunnel Inverted Arch Structure Resistant to Bass Drum

Examples

Experimental program
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Effect test

Embodiment 1

[0018] The bottom drum-resistant tunnel inverted arch structure involved in this embodiment mainly includes an inverted arch 100, an inverted arch filling 101, a drainage channel 102, a drain pipe 103, a water discharge port 104, an anti-water reverse adhesive strip 105, a water seepage hole 106, an arch Foot locking anchor rod 107, anti-floating anchor rod 108, diamond-shaped steel grid 109; drainage channel 102 is arranged longitudinally through the tunnel in the inverted arch filling 101, and the drainage channel 102 has a downward slope from the middle to both ends, so that the drainage channel The water in 102 is discharged to the outside of the tunnel; the drainage channel 102 is uniformly provided with a plurality of pressure relief pipes 103 along the longitudinal direction of the tunnel, one end of the pressure relief pipe 103 extends into the drainage channel 102, and the other end goes deep into the surrounding rock, so that the The high-pressure water is squeezed in...

Embodiment 2

[0020] like figure 1 and figure 2 As shown, the anti-bass drum invert structure includes an invert 100 and an invert filling 101. The invert filling 101 is provided with a drainage channel 102, and the drainage channel 102 is arranged along the longitudinal length of the tunnel and has a certain slope, so as to To facilitate the water in the channel to drain out of the tunnel.

[0021] Specifically, the anti-floor invert structure also includes a drain pipe 103, which connects the surrounding rock and the drainage channel 102, and squeezes the high-pressure water in the surrounding rock into the drainage channel 102 to play the role of releasing water pressure. .

[0022] Specifically, the drain pipe 103 is provided with a drain port 104, and the drain hole 104 is located at the top of the drain pipe 103, close to the top of the drain channel 102, and discharges the high-pressure water infiltrated into the drain tube in the surrounding rock to the drain channel 102 in time....

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PUM

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Abstract

The invention belongs to the field of building construction, and relates to a tunnel inverted arch structure capable of effectively resisting floor heave. The main structure comprises an inverted arch, inverted arch filler, a drainage channel, a drainage pipe, a water outlet, an anti-backwater rubber strip, a water seepage hole, arch foot locking anchor rods, anti-floating anchor rods and a rhombic steel grating; the drainage channel and the drainage pipe in surrounding rock can effectively discharge water in the surrounding rock at the bottom of the inverted arch along the inverted arch drainage channel, so that high water pressure at the bottom of the inverted arch is released, the effect of external buoyancy on the inverted arch is reduced, and the anti-floor-heave capacity of the inverted arch structure is improved; the two arch foot locking anchor rods can make the inverted arch structure tightly connected with an upper lining and lining locking foot anchor rods, and the buoyancyresistance of the inverted arch structure is improved.

Description

Technical field: [0001] The invention belongs to the field of building construction and relates to a tunnel inverted arch structure which can effectively resist floor drums. Background technique: [0002] As an important part of the tunnel lining, the inverted arch is an inverted arch structure that can restrain the deformation of the surrounding rock and increase the stability of the surrounding rock. The inverted arch structure not only transmits the stratum pressure from the upper part of the tunnel to the underground, but also resists the reaction force from the strata below the tunnel. Therefore, the inverted arch structure in the tunnel is often cracked or damaged, which seriously affects the safety of train operation. The inverted arch structure includes the inverted arch and the inverted arch filling. The inverted arch is filled with plain concrete structure and poured in layers with the inverted arch. The inverted arch is integrated with the upper lining, which can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/08E21F16/02E21D20/00E21D11/15
CPCE21D11/08E21D11/152E21D20/00E21F16/02
Inventor 杜明庆王旭春张素磊李永宽袁德浩冯磊管晓明张鹏于云龙朱既贤
Owner QINGDAO TECHNOLOGICAL UNIVERSITY