Railway tunnel under non-stop operation condition quality upgrading and reconstruction full ring pipe piece rapid construction method

Abstract

This invention relates to the field of tunnel construction, specifically a rapid construction method for upgrading and renovating a full-ring segment railway tunnel under the condition of non-stop operation. By using prefabricated segments to ensure the quality of the lining structure after renovation, and by first assembling half of the segments and setting up temporary supports, and then assembling the other half of the segments, it is possible to maintain one line of operation, meet the travel needs of people along the line, reduce social impact, and ultimately complete the thorough renovation of the lining structure failure caused by complex defects in the railway tunnel under operating conditions, thus ensuring the safety of train operation.

Description

Technical Field

[0001] This invention relates to the field of tunnel construction, and in particular to a rapid construction method for upgrading and renovating full-ring segments of railway tunnels under the condition of non-stop operation. Background Technology

[0002] Many railway tunnels exist along my country's railway lines. Due to the complexity of the underground environment, some tunnels exhibit various types and degrees of defects. In recent years, some tunnels have experienced defects such as insufficient lining thickness, strength degradation, cracking, water seepage, crystal precipitation, and concrete corrosion. The main measures taken include adding drainage holes, sealing cracks, grouting reinforcement, partial replacement, or adding linings. The defects are diverse and complex, and some tunnels have severe lining structural deterioration, requiring long-section lining remediation measures.

[0003] However, due to the difficulty in shutting down and maintaining operational railway tunnels, long-section lining construction needs to be carried out during maintenance windows when trains are not passing through. This presents challenges such as short working hours, long time required for construction personnel to enter the site, and extremely short effective working time. At the same time, railway tunnels contain various equipment and facilities that ensure the normal operation of trains, such as tracks, overhead contact lines, power, communication, and signal cables, making protection extremely difficult. Furthermore, large machinery cannot be used for construction; only small handheld machinery can be employed, with manual labor being the primary method.

[0004] The construction of long-section linings for operational railway tunnels faces numerous challenges due to short working hours, reliance on manual labor, and difficulties in material transportation. These challenges include difficulties in concrete mixing, insufficient vibration, inability to properly cure the lining, and numerous construction joints resulting from segmented construction. Consequently, the quality of construction is difficult to guarantee, and some linings develop cracks and water seepage after only a few years of operation, becoming new defects. Directly shutting down the railway would have a significant social impact, disrupting public travel and causing substantial economic losses.

[0005] Therefore, a method for constructing long-section linings in railway tunnels without interrupting railway operations is needed. Summary of the Invention

[0006] The purpose of this invention is to address the problems in existing long-segment lining construction of operating railway tunnels, which are characterized by numerous operating equipment and facilities within the tunnel. Even during maintenance windows when trains are not in operation, construction faces challenges such as short working time, reliance on manual concrete work, difficulties in material transportation, and difficulty in ensuring the quality of lining construction. This invention provides a rapid construction method for upgrading and renovating full-ring segments of railway tunnels under conditions of continuous operation.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] A rapid construction method for upgrading and renovating full-ring segments of railway tunnels without interrupting railway operation includes the following steps:

[0009] S1. The right track of the railway inside the tunnel is suspended and the left track is in operation. The right track contact wire structure is dismantled and a temporary right track contact wire structure is constructed on the right side wall of the tunnel.

[0010] S2, Left line to be shut down, right line to be in operation, removal of left line contact network structure, left line power and communication cable, left line track structure, existing side ditch on the left, existing center ditch, and existing infilled left side section;

[0011] S3. Assemble the left-side segment structure at the existing secondary lining. The segment structure is prefabricated outside the tunnel. A temporary support structure for the segment structure is set in the middle of the tunnel. The drainage ditch on the left side of the segment structure and the filling on the left side of the segment structure are restored.

[0012] S4. Construct a temporary contact network structure for the left line and a power and communication cable for the left side of the segment structure on the left side of the segment structure wall. Fill the left side of the segment structure with the restored left line track structure.

[0013] S5, right line out of service, left line in operation, dismantle the right line temporary contact network structure, right line power and communication cables, right line track structure, existing side ditch on the right side, and existing infilled right side section;

[0014] S6. Assemble the right-side segment structure at the existing secondary lining. As the right-side segment structure is assembled, remove the temporary support structure of the segment structure of the first ring. After removal, restore the right-side drainage ditch and the right-side filling of the segment structure.

[0015] S7. Restore the top operating facilities, dismantle the temporary contact network structure of the left line, construct the right-side power and communication cable of the segment structure on the right-side segment structure wall, fill the right-side segment structure with the restored right-side track structure, restore the central drainage ditch, and restore double-track operation.

[0016] Currently, for single-bore double-track tunnels, there is no method for adding segment linings to sections under operational conditions. Only sporadic cast-in-place linings can be added, and the construction quality is difficult to guarantee. The present invention adopts a rapid construction method for full-ring segment lining for quality improvement and renovation of railway tunnels under non-stop operation conditions. By using prefabricated segments to ensure the quality of the lining structure after renovation, and by assembling half of the segments first and setting temporary supports, and then assembling the other half of the segments, it is possible to maintain one line of operation, meet the travel needs of people along the line, reduce social impact, and ultimately complete the thorough renovation of the lining structure failure caused by complex defects in the railway tunnel under operational conditions, ensuring the safety of train operation.

[0017] As a preferred technical solution of the present invention, in step S1, the right-side AF line device is also removed.

[0018] As a preferred technical solution of the present invention, in step S2, the left AF line device, the left protection line, and the right protection line are also removed.

[0019] As a preferred technical solution of the present invention, in step S3, assembling the left-side segment structure includes assembling the left-line inverted arch block, the left-line inverted arch sidewall connecting block, the left-line sidewall block, the left-line arch waist block, and the left-line arch top connecting block in sequence.

[0020] As a further preferred technical solution of the present invention, in step S4, a temporary contact network structure for the left line is installed on the left line arch block, and a power communication cable for the left side of the pipe segment structure is installed on the left line side wall block.

[0021] As a preferred technical solution of the present invention, in step S6, assembling the right-side segment structure includes assembling the right-line inverted arch block, the right-line inverted arch sidewall connecting block, the right-line sidewall block, the right-line arch waist block, the right-line arch top connecting block, and the arch top block in sequence.

[0022] As a further preferred technical solution of the present invention, in step S7, the right-side power communication cable of the pipe segment structure is installed on the right-side wall block.

[0023] As a preferred technical solution of the present invention, in step S7, the top operation facilities include a left-line contact wire structure after segment lining, a right-line contact wire structure after segment lining, a left-line AF wire device after segment lining, a right-line AF wire device after segment lining, a left-line protection wire after segment lining, and a right-line protection wire after segment lining.

[0024] As a further preferred technical solution of the present invention, the rooftop operating facilities are installed and constructed during the skylight window period.

[0025] As a preferred technical solution of the present invention, the segment structure is assembled and constructed using a segment construction trolley.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0027] The present invention describes a rapid construction method for upgrading and renovating a railway tunnel using prefabricated tunnel segments. This method ensures the quality of the lining structure after renovation by using prefabricated tunnel segments. By first assembling half of the tunnel segments and setting up temporary supports, and then assembling the other half, one line can be maintained for operation, meeting the travel needs of people along the line, reducing social impact, and ultimately completing the thorough renovation of the lining structure failure caused by complex defects in the railway tunnel under operating conditions, thus ensuring the safety of train operation. Attached Figure Description

[0028] Figure 1 A flowchart for a rapid construction method of full-ring segment upgrade for railway tunnels under non-stop operation conditions;

[0029] Figure 2 Cross-sectional layout diagram of a tunnel for a double-track electrified railway;

[0030] Figure 3This is a schematic diagram showing the result after step one of Example 1 is implemented;

[0031] Figure 4 This is a schematic diagram showing the result after step two in Example 1.

[0032] Figure 5 This is a schematic diagram showing the result after step three in Example 1.

[0033] Figure 6 This is a schematic diagram showing the result of step four in Example 1.

[0034] Figure 7 This is a schematic diagram showing the result after step five in Example 1;

[0035] Figure 8 This is a schematic diagram showing the result after step six in Example 1;

[0036] Figure 9 This is a schematic diagram after step seven in Example 1 has been implemented.

[0037] Marked in the image:

[0038] 11-Existing primary support, 12-Existing secondary lining, 13-Existing side ditch, 14-Existing central ditch, 15-Left track structure, 16-Right track structure, 17-Existing filling;

[0039] 21-Left contact wire structure, 22-Right contact wire structure, 23-Left AF wire device, 24-Right AF wire device, 25-Left protective wire, 26-Right protective wire, 27-Left power communication cable, 28-Right power communication cable;

[0040] 31 - Left-track train clearance; 32 - Right-track train clearance;

[0041] 41 - Right-line temporary contact network structure; 42 - Left-line temporary contact network structure;

[0042] 51-Left inverted arch block, 52-Left inverted arch sidewall connecting block, 53-Left sidewall block, 54-Left arch waist block, 55-Left arch top connecting block, 56-Temporary support structure for the segment structure, 57-Left side drainage ditch of the segment structure, 58-Left side filling of the segment structure, 59-Left side power and communication cable of the segment structure.

[0043] 61-Right-line inverted arch block, 62-Right-line inverted arch sidewall connecting block, 63-Right-line sidewall block, 64-Right-line arch waist block, 65-Right-line arch top connecting block, 66-Arch top block, 67-Right-side drainage ditch of the segment structure, 68-Right-side filling of the segment structure, 69-Right-side power and communication cable of the segment structure;

[0044] 71-Left contact wire structure after segment lining, 72-Right contact wire structure after segment lining, 73-Left AF line device after segment lining, 74-Right AF line device after segment lining, 75-Left protection line after segment lining, 76-Right protection line after segment lining, 77-Central drainage ditch. Detailed Implementation

[0045] The present invention will be further described in detail below with reference to experimental examples and specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0046] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of the present invention is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the present invention or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on the present invention.

[0047] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but that it can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0048] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0049] Furthermore, in the description of the embodiments of the present invention, "several", "more than", and "a number of" represent at least two. The number can be any number, such as 2, 3, 4, 5, 6, 7, 8, or 9, and can even exceed nine.

[0050] Furthermore, in the description of the technical solution of this invention, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0051] In related technologies, such as Figure 2 As shown, for a double-track electrified railway tunnel, it includes the existing primary support 11, existing secondary lining 12, existing side ditch 13, existing central ditch 14, left track structure 15, right track structure 16, existing filling 17, left contact network structure 21, right contact network structure 22, left AF line device 23, right AF line device 24, left protection line 25, right protection line 26, left power and communication cable 27, right power and communication cable 28, left train clearance 31, and right train clearance 32; the existing primary support 11 is in contact with the surrounding rock, and the existing... The secondary lining 12 is located near the train side and connects to the existing primary support 11. The existing side ditch 13 is used to collect groundwater around the lining, and the existing central ditch 14 is used for drainage. The left track structure 15 and the right track structure 16 are used for train passage. The existing fill 17 is used to support the track structure. The left track contact wire structure 21, the right track contact wire structure 22, the left track AF line device 23, the right track AF line device 24, the left track protection line 25, and the right track protection line 26 are used to supply power to the train. The left track power communication cable 27 and the right track power communication cable 28 are used for power communication along the line. It can be seen that there are many kinds of equipment and facilities in the operating railway tunnel. Even when construction is carried out during the maintenance window when trains are not passing, it faces the problems of short working time, long time for construction workers to enter the site, extremely short effective working time, and difficulties in material transportation. Large machinery cannot be used for construction, and only small hand-held machinery can be used. The main method of concrete work is manual. This kind of sporadic increase in the quality of cast-in-place lining construction is difficult to guarantee. Therefore, it is difficult to use traditional long-section lining concrete construction for operating railway tunnels. For this reason, the technical solution of this application was developed. The following is combined with Figures 1 to 9 To elaborate.

[0052] Example 1

[0053] like Figure 1As shown, the present invention provides a rapid construction method for upgrading and renovating full-ring segments of railway tunnels under non-stop operation conditions, comprising the following steps:

[0054] Step 1, such as Figure 1 and Figure 3 As shown, for a single-tube double-track tunnel, in order to increase the space during the assembly of the left-side segments, the right-side railway line inside the tunnel is shut down and the left-side railway line operates as a single track; the right-side contact wire structure 22 and the right-side AF line device 24 are removed, and at the same time, a temporary right-side contact wire structure 41 that can supply power to the right-side trains is constructed on the right side wall of the tunnel.

[0055] Step Two, as follows Figure 1 and Figure 4 As shown, the left railway line inside the tunnel is shut down, and the right railway line operates as a single track. In order to realize the assembly of the left-side segment structure, the left-side contact wire structure 21, the left-side AF line device 23, the left-side protection line 25, the right-side protection line 26, and the left-side power and communication cable 27 are removed. At the same time, the left-side track structure 15, the existing side ditch 13, the existing central ditch 14, and the left side part of the existing filling 17 are removed in sequence.

[0056] Step 3, as follows Figure 1 and Figure 5 As shown, the left railway line inside the tunnel is suspended, and the right railway line operates as a single track. The left-side segment structure is assembled at the existing secondary lining at point 12. The segment structure is prefabricated outside the tunnel. When the assembly conditions are met, special equipment (such as a segment construction trolley) is used to assemble the left-line inverted arch block 51, the left-line inverted arch sidewall connecting block 52, the left-line sidewall block 53, the left-line arch waist block 54, and the left-line arch top connecting block 55 in sequence. In order to ensure the safety and stability of the segment structure already assembled on the left side, a temporary support structure 56 for the segment structure is set in the middle of the tunnel. Subsequently, the drainage ditch 57 on the left side of the segment structure and the filling 58 on the left side of the segment structure are restored.

[0057] Step 4, as follows Figure 1 and Figure 6 As shown, the left railway line inside the tunnel is suspended and the right railway line operates on a single track. In order to restore the temporary train operation on the left, a temporary contact network structure 42 for the left track is installed on the left arch block 54. The left power and communication cable 59 for the left track is hung on the left side wall block 53. The left track structure 15 is restored on the left filler 58 of the segment structure.

[0058] Step 5, as follows Figure 1 and Figure 7As shown, the right track of the railway inside the tunnel is shut down, and the left track operates as a single track. The temporary contact network structure 41 of the right track, which is used to supply power to the right track trains, is dismantled, as is the right track power and communication cable 28 used to operate the right track trains. The right track structure 16, the existing side ditch 13 on the right side, and the right side part of the existing filling 17 are dismantled in sequence to create conditions for the assembly of the right track segments.

[0059] Step Six, as Figure 1 and Figure 8 As shown, the right railway line inside the tunnel is suspended, and the left railway line operates as a single track. The right-side segment structure is assembled at the existing secondary lining at point 12. The segment structure is prefabricated outside the tunnel. When the assembly conditions are met, special equipment is used to assemble the right-side inverted arch block 61, the right-side inverted arch sidewall connecting block 62, the right-sidewall block 63, the right-side arch waist block 64, the right-side arch top connecting block 65, and the arch top block 66 in sequence. The arch top block 66 is joined with the left-side arch top connecting block 55. As one ring of the right-side segment structure is assembled, the temporary support structure 56 of the segment structure is removed. After removal, the right-side drainage ditch 67 and the right-side filling 68 of the segment structure are restored in sequence.

[0060] Step 7, as follows Figure 1 and Figure 9 As shown, during the track maintenance period, the following steps are taken: after the segment lining is restored, the left-line contact wire structure 71, the right-line contact wire structure 72, the left-line AF line device 73, the right-line AF line device 74, the left-line protection line 75, and the right-line protection line 76 are restored; the left-line temporary contact wire structure 42 used for temporary train operation on the left-line is removed; the power and communication cable 69 on the right side of the segment structure installed on the right-line sidewall block 63 is restored; the right-line track structure 16 is installed on the right side of the segment structure and filled in 68; the central drainage ditch 77 is restored; and finally, normal double-track operation is restored.

[0061] The present invention describes a rapid construction method for upgrading and renovating a railway tunnel using prefabricated tunnel segments. This method ensures the quality of the lining structure after renovation by using prefabricated tunnel segments. By first assembling half of the tunnel segments and setting up temporary supports, and then assembling the other half, one line can be maintained for operation, meeting the travel needs of people along the line, reducing social impact, and ultimately completing the thorough renovation of the lining structure failure caused by complex defects in the railway tunnel under operating conditions, thus ensuring the safety of train operation.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rapid construction method for upgrading and renovating full-ring segments of railway tunnels without interrupting operation, characterized in that, Includes the following steps: S1. The right line of the railway in the tunnel is suspended and the left line is in operation. The right line contact wire structure is dismantled (22), and a temporary right line contact wire structure is constructed on the right side wall of the tunnel (41). S2, the left line is shut down and the right line is in operation. The left line contact network structure (21), the left line power and communication cable (27), the left line track structure (15), the existing side ditch (13), the existing central ditch (14), and the left side part of the existing filling (17) are removed. S3. Assemble the left-side segment structure at the existing secondary lining (12). The segment structure is prefabricated outside the tunnel. Set up a temporary support structure (56) for the segment structure in the middle of the tunnel. Restore the left-side drainage ditch (57) and the left-side filling (58) of the segment structure. S4. Construct a temporary contact network structure (42) and a power communication cable (59) on the left side of the segment structure wall. Restore the left track structure (15) on the filler (58) on the left side of the segment structure. S5. The right line is shut down and the left line is in operation. The temporary contact network structure (41), the power and communication cable (28), the track structure (16), the existing side ditch (13), and the existing filling (17) on the right side of the right line are removed. S6. Assemble the right-side segment structure at the existing secondary lining (12). As the right-side segment structure is assembled, remove the temporary support structure (56) of the segment structure of the first ring. After removal, restore the right-side drainage ditch (67) and right-side filling (68) of the segment structure. S7. Restore the top operating facilities, remove the temporary contact network structure of the left line (42), construct the right-side power communication cable of the segment structure (69) on the right-side segment structure wall, restore the right-side track structure (16) on the right-side filler (68) of the segment structure, restore the central ditch (77), and restore double-track operation.

2. The rapid construction method for upgrading and renovating full-ring segments of railway tunnels under non-stop operation conditions as described in claim 1, characterized in that, In step S1, the right-side AF line device (24) is also removed.

3. The rapid construction method for upgrading and renovating full-ring segments of railway tunnels under non-stop operation conditions as described in claim 1, characterized in that, In step S2, the left line AF line device (23), the left line protection line (25), and the right line protection line (26) are also removed.

4. The rapid construction method for upgrading and renovating full-ring segments of railway tunnels under non-stop operation conditions as described in claim 1, characterized in that, In step S3, assembling the left-side segment structure includes assembling the left-line inverted arch block (51), the left-line inverted arch sidewall connecting block (52), the left-line sidewall block (53), the left-line arch waist block (54), and the left-line arch top connecting block (55) in sequence.

5. The rapid construction method for upgrading and renovating full-ring segments of railway tunnels under non-stop operation conditions as described in claim 4, characterized in that, In step S4, a temporary contact network structure (42) for the left line is installed on the left line arch block (54), and a power communication cable (59) for the left side of the pipe segment structure is installed on the left line side wall block (53).

6. The rapid construction method for upgrading and renovating full-ring segments of railway tunnels under non-stop operation conditions as described in claim 1, characterized in that, In step S6, assembling the right-side segment structure includes assembling the right-line inverted arch block (61), the right-line inverted arch sidewall connecting block (62), the right-line sidewall block (63), the right-line arch waist block (64), the right-line arch top connecting block (65), and the arch top block (66) in sequence.

7. The rapid construction method for upgrading and renovating full-ring segments of railway tunnels under non-stop operation conditions as described in claim 6, characterized in that, In step S7, the right-side power communication cable (69) of the segment structure is installed on the right-side wall block (63).

8. The rapid construction method for upgrading and renovating full-ring segments of railway tunnels under non-stop operation conditions as described in claim 1, characterized in that, In step S7, the top operating facilities include the left line contact wire structure (71) after segment lining, the right line contact wire structure (72) after segment lining, the left line AF wire device (73) after segment lining, the right line AF wire device (74) after segment lining, the left line protection wire (75) after segment lining, and the right line protection wire (76) after segment lining.

9. The rapid construction method for upgrading and renovating full-ring segments of railway tunnels under non-stop operation conditions as described in claim 8, characterized in that, The rooftop operating facilities are installed during the skylight window.

10. The rapid construction method for upgrading and renovating full-ring segments of railway tunnels under non-stop operation conditions according to any one of claims 1-9, characterized in that, The segment structure is assembled and constructed using a segment construction trolley.

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