Reinforcing device for oil and gas pipeline tunnel lining with cracks

Abstract

The utility model discloses a reinforcing device for a tunnel lining of an oil and gas pipeline with cracks, which comprises a plurality of steel arch frames arranged at intervals in the front-back direction along the extending direction of a tunnel, each steel arch frame comprises a plurality of unit arch frames, steel plates are arranged at two ends of each unit arch frame, and the steel plates contacted with a bottom plate of the tunnel lining are supporting steel plates. The other steel plates are connecting steel plates, connecting structures used for achieving connection of the unit arch frames are arranged on every two adjacent connecting steel plates, and supporting structures used for preventing the steel arch frames from sliding in the axial direction of the tunnel are arranged on the supporting steel plates. The whole reinforcing structure is simple, the steel arch frame can be prevented from sliding in the axial direction of the tunnel through the supporting structure, and meanwhile it can be guaranteed that the steel arch frame makes contact with the inner side of the tunnel lining under the action of the supporting structure; compared with the prior art, the tunnel lining can be supported more quickly, so that early-stage support is provided for a follow-up reinforcing structure, and meanwhile the steel arch frame can be prevented from deviating in follow-up reinforcing.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of tunnel and underground structure disease treatment and defect repair technology, concretely relates to a reinforcing device for the tunnel lining of oil and gas pipeline with cracks. BACKGROUND

[0002] It is a common pipeline laying method in oil and gas industry to install oil and gas pipeline in tunnel (hereinafter referred to as oil and gas pipeline tunnel) when the long-distance pipeline crosses the mountains and water barriers. During the operation of the oil and gas pipeline tunnel, cracks of different widths and lengths will occur in the concrete lining due to the influence of various factors such as geology, earthquakes and construction defects.

[0003] Currently, steel arches, sprayed concrete, pasted fiber materials or set sleeve lining are used to support the cracked oil and gas pipeline tunnel lining. Because the cross-sectional area of the oil and gas pipeline tunnel is small, the steel arch is commonly used to reinforce the cracked oil and gas pipeline tunnel lining. When the steel arch is used for support, the end of the steel arch is directly placed on the bottom plate of the tunnel, and then the anchor rod is driven or the concrete is poured to realize the contact between the steel arch and the tunnel lining, thereby realizing the support of the steel arch to the tunnel lining. When the concrete is poured subsequently, the steel arch is prone to deviation, and the steel arch can only realize the support effect after the concrete is solidified, that is, the support is slow. UTILITY MODEL CONTENTS

[0004] The utility model provides a reinforcing device for the tunnel lining of oil and gas pipeline with cracks, which can not only quickly support the tunnel lining with steel arch, but also prevent deviation during subsequent work of the steel arch.

[0005] Therefore, the utility model adopts the technical scheme that a reinforcing device for the tunnel lining of oil and gas pipeline with cracks, comprising a plurality of steel arches arranged on the inner side of the tunnel lining and matched with the inner contour of the tunnel lining, and the steel arches are arranged at intervals along the extension direction of the tunnel, the steel arch comprises a plurality of unit arches, each unit arch is made of I-beam, and the two ends of the unit arch are provided with steel plates, wherein the steel plate in contact with the bottom plate of the tunnel lining is a support steel plate, and the remaining steel plates are connecting steel plates, a connecting structure for connecting the unit arches is arranged on the adjacent two connecting steel plates, and a support structure for timely fitting the steel arch with the inner side of the tunnel lining and preventing the steel arch from slipping along the axial direction of the tunnel is arranged on the support steel plate.

[0006] As the preferred in the above scheme, the support structure includes support holes arranged on the support steel plate, support nuts are arranged on the support steel plate at positions corresponding to the support holes, support bolts are screwed in the support nuts, and the support bolts pass through the support nuts and the support holes from top to bottom and then abut against the tunnel lining bottom plate.

[0007] Further preferably, the connecting structure includes connecting holes arranged on the connecting steel plate, connecting bolts are arranged in the connecting holes, and connecting nuts are arranged on the connecting bolts after the connecting bolts pass through two adjacent connecting holes in sequence.

[0008] Further preferably, the water ditch support plate is further included, the water ditch support plate is in the form of an I-shaped steel, and is located in the drainage ditch for supporting the drainage ditch cover plate.

[0009] Further preferably, horizontal connecting steel bars are arranged between adjacent steel arches along the direction of the tunnel lining contour, the horizontal connecting steel bars are arranged on the side opposite to the contact surface between the steel arches and the inner side of the tunnel lining, and the two ends of the horizontal connecting steel bars are both arranged with a bending towards the steel arch.

[0010] The whole reinforcing structure is simple, the support structure can not only prevent the steel arch from slipping along the extension direction of the tunnel, but also ensure the close contact between the steel arch and the inner side of the tunnel lining under the action of the support structure, the application can realize the support of the tunnel lining faster compared with the prior art, thereby providing early support for the subsequent reinforcing structure, and the steel arch can also be prevented from deviating in the subsequent reinforcing. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a schematic view of the present utility model.

[0012] Figure 2 is a schematic view of the connecting steel plate in the present utility model.

[0013] Figure 3 is a schematic view of the support steel plate in the present utility model.

[0014] Figure 4 is a schematic view of the connecting structure in the present utility model Figure 1 .

[0015] Figure 5 is a schematic view of the connecting structure in the present utility model Figure 2 .

[0016] Figure 6 is a schematic view of the support structure in the present utility model Figure 1 .

[0017] Figure 7 is a schematic view of the support structure in the present utility model Figure 2 .

[0018] Figure 8 It is a schematic view of horizontal connecting steel bars in the utility model.

[0019] Figure 9 It is a cross-sectional view of the utility model being implemented in the lining of oil and gas pipeline tunnel.

[0020] The figure mark: tunnel lining-A, tunnel floor plate-B, drainage ditch-C, water ditch cover plate-D, I-beam-E, concrete buttress-F, pipe clamp-G, pipeline-H, crack-x, steel arch-1, unit arch-11, connecting steel plate-15, connecting hole-151, connecting nut-152, connecting bolt-153, supporting steel plate-16, supporting hole-161, supporting nut-162, supporting bolt-163, horizontal connecting steel bar-17. DETAILED DESCRIPTION

[0021] The utility model will be further explained by examples and in combination with the drawings:

[0022] As Figures 1-9 shown, a reinforcing device for oil and gas pipeline tunnel with cracks, the reinforcing device is arranged in the inner side of the tunnel with cracks x, the pipeline H for conveying oil and natural gas is installed in the tunnel, and the tunnel comprises tunnel lining A, tunnel floor plate B, drainage ditch C, water ditch cover plate D, concrete buttress F for supporting the pipeline H, and the pipeline is fixed on the concrete buttress F through the pipe clamp G. Wherein the side of the tunnel lining towards the tunnel is the inner side, the side of the tunnel lining towards the outside of the tunnel is the outer side, the extension direction of the tunnel is the front and back direction, and the cross-sectional direction of the tunnel is the left and right direction.

[0023] The reinforcing device mainly comprises a plurality of steel arches 1 arranged on the inner side of the tunnel lining and matched with the inner contour of the tunnel lining, and the steel arches 1 are arranged in front and back intervals along the extension direction of the tunnel. The steel arch 1 comprises a plurality of unit arches 11, and each unit arch 11 is made of I-beam. In order to ensure the supporting effect, the I-beam of each unit arch 11 is generally arranged towards the cross section of the tunnel, that is, the flange plate of the I-beam is in contact with the tunnel lining.

[0024] Steel plates are arranged at both ends of the unit arch 11, wherein the steel plate in contact with the tunnel lining floor plate B is the supporting steel plate 16, and the remaining steel plates are the connecting steel plates 15. Connecting structures for realizing the connection of unit arches are arranged on the adjacent two connecting steel plates 15, and supporting structures for making the steel arches fit the inner side of the tunnel lining in time and preventing the steel arch 1 from slipping along the axial direction of the tunnel are arranged on the supporting steel plate 16.

[0025] The support structure includes support holes 161 provided on the support steel plate 16, with one support hole 161 on each side of the web of the steel arch frame I-beam. Support nuts 162 are provided on the support steel plate 16 at the positions corresponding to the support holes. Support bolts 163 are screwed into the support nuts 161. The support bolts 163 pass through the support nuts and support holes from top to bottom and abut against the tunnel lining bottom plate B.

[0026] The connection structure includes connection holes 151 provided on the connecting steel plate 15, and two connection holes 151 are provided on each side of the web of the steel arch frame I-beam. A connecting bolt 152 is provided in the connection hole 151, and a connecting nut 153 is provided after the connecting bolt 152 passes through two adjacent connection holes 151 in sequence.

[0027] To support the drainage ditch cover and prevent blockage due to cover damage, a drainage ditch support plate E is installed. Support plate E, made of I-beams, is located inside the drainage ditch C to support the drainage ditch cover D. Ideally, support plate E is positioned close to the outer wall of the drainage ditch. The installation of support plate E ensures the strength of the drainage ditch cover, allowing the steel arch frame to be directly mounted on it, thus enabling the installation of the steel arch frame on the side closest to the drainage ditch.

[0028] A horizontal connecting steel bar 17 is provided between adjacent steel arch frames 1 along the contour direction of the tunnel lining, and the horizontal connecting steel bar 17 is provided on the side opposite to the contact surface between the steel arch frame 1 and the inner side of the tunnel lining. Preferably, both ends of the horizontal connecting steel bar 17 are provided with bends toward the steel arch frame 1.

[0029] Based on the above-mentioned reinforcement device, the reinforcement method of this application is as follows:

[0030] Step 1: Based on the inner contour of the oil and gas pipeline tunnel lining with cracks, construct a steel arch frame using I-beams that matches the inner contour and consists of multiple unit arch frames.

[0031] Step 2: In the tunnel section where steel arches need to be installed, open the drainage ditch cover and place a drainage ditch support plate near the outer wall of the drainage ditch to support the drainage ditch cover.

[0032] Step 3: Assemble the unit arch frame 11 along the circumference of the tunnel lining A with crack x on the inner side, so that the connecting holes on the connecting steel plate correspond one by one. Then, after passing the connecting bolts through the corresponding connecting holes, tighten them with connecting nuts until the connection of one ring of steel arch frame is completed.

[0033] Fourth step: screw the supporting bolts on the supporting steel plate from top to bottom, so that the supporting bolts move towards the direction of the tunnel bottom plate until the supporting bolts cannot be screwed. Through the screwing of the supporting bolts, the assembled steel arch frame can move towards the direction of adhering to the tunnel lining, ensuring that the steel arch frame timely adheres to the inner side of the tunnel lining, thereby achieving preliminary support. Since the supporting bolts are in contact with the tunnel bottom plate, the steel arch frame is limited, effectively preventing the steel arch frame from deviating along the extension direction of the tunnel.

[0034] Fifth step: repeat the first to fourth steps until the oil and gas pipeline tunnel with cracks is supported by the steel arch frame, then weld horizontal connecting steel bars at a certain distance along the circumferential direction of the inner side of the tunnel lining between adjacent steel arch frames, so that all the steel arch frames are integrated. After the installation of the steel arch frame is completed, subsequent concrete pouring and further reinforcement procedures are carried out.

Claims

1. A reinforcing device for tunnel lining of oil and gas pipeline with cracks, comprising a plurality of steel arches (1) arranged inside the tunnel lining and matching the inner contour of the tunnel lining, and the steel arches (1) are arranged in front and back along the extension direction of the tunnel, the steel arch (1) comprises a plurality of unit arches (11), and each unit arch (11) is made of an I-beam, characterized in that: Both ends of the unit arch (11) are provided with steel plates, wherein the steel plate in contact with the tunnel lining bottom plate (B) is a support steel plate (16), and the rest of the steel plates are connecting steel plates (15), adjacent two connecting steel plates (15) are provided with connecting structures for realizing unit arch connection, and the support steel plate (16) is provided with a support structure for realizing the close fit of the steel arch with the inner side of the tunnel lining and preventing the steel arch (1) from slipping along the direction of the tunnel axis.

2. A reinforcement device for a tunnel lining of an oil and gas pipeline with cracks as claimed in claim 1, characterized in that: The support structure comprises a support hole (161) provided on the support steel plate (16), the support steel plate (16) is provided with a support nut (162) at a position corresponding to the support hole (161), a support bolt (163) is screwed in the support nut (162), and the support bolt (163) passes through the support nut and the support hole from top to bottom and abuts against the tunnel lining bottom plate (B).

3. The reinforcement apparatus for a tunnel lining of an oil and gas pipeline with cracks as defined in claim 1, characterized in that: The connecting structure comprises a connecting hole (151) provided on the connecting steel plate (15), and a connecting bolt (152) is arranged in the connecting hole (151), and the connecting bolt (152) is provided with a connecting nut (153) after sequentially passing through two adjacent connecting holes (151).

4. The reinforcement apparatus for a tunnel lining of an oil and gas pipeline with cracks as defined in claim 1, wherein: A ditch support plate (E) is further included, which is made of an I-shaped steel and is located in the drainage ditch (C) for supporting the drainage ditch cover plate (D).

5. The reinforcement apparatus for a tunnel lining of an oil and gas pipeline with cracks as defined in claim 1, wherein: Horizontal connecting steel bars (17) are arranged between adjacent steel arches (1) along the direction of the tunnel lining contour, and the horizontal connecting steel bars (17) are arranged on the side opposite to the contact surface between the steel arch (1) and the inner side of the tunnel lining, and both ends of the horizontal connecting steel bar (17) are provided with a bending towards the steel arch (1).

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