A shield machine protection dome for shield tunneling of station infrastructure

Abstract

The present application relates to the technical field of protective dome, and particularly discloses a protective dome for shield tunneling of station infrastructure shield tunneling machine, which comprises a plurality of first segments with the same size as the rotation of the shield tunneling machine and a plurality of second segments detachably connected with the first segments; the first segments are spliced along the advancing direction of the shield tunneling machine, and the first segments on the same plane are spliced into a cylinder; the second segments are arranged on the inner side of the first segments, and the second segments change the splicing seams formed by the splicing of the first segments along the advancing direction of the shield tunneling machine, and the second segments change the splicing seams formed by the splicing of the first segments on the same plane; the device solves the problem that the water seepage phenomenon cannot be solved after the installation of the traditional protective dome is completed, and the waterproof sheet still needs to be fully covered and installed.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of protective domes, and particularly discloses a protective dome for a shield tunneling machine for station infrastructure construction. BACKGROUND

[0002] The shield tunneling machine is a large underground excavation device, and when the shield tunneling machine is used for underground excavation, the front part of the tunnel is excavated, and then the soil is transported to the rear part. When the shield tunneling machine is working, the surrounding soil is loose and may collapse.

[0003] Regarding the collapse phenomenon:

[0004] The shield tunneling machine needs to be described in detail:

[0005] The shield tunneling machine works through a drill bit, and the cutter head at the front of the drill bit is a hard alloy steel roller, which rolls and crushes the rock into pieces. As the shield tunneling machine moves, the tunnel is formed.

[0006] Due to the movement of the shield tunneling machine, the soil in the position in front of the shield tunneling machine is not supported, and the surrounding soil is loose and may collapse.

[0007] The shield tunneling machine is a very large project, and it has a transportation platform, a transportation bridge and a transportation vehicle. If the collapsed tunnel collapses after the shield tunneling machine moves, it will have a huge impact on the entire shield tunneling machine project.

[0008] Therefore, a protective dome is needed: every time the shield tunneling machine moves, the protective dome is installed manually. The protective dome needs to be installed on the entire tunnel, and then a waterproof layer is installed based on the protective dome, and then concrete is poured based on the waterproof layer, and thus the tunnel is formed.

[0009] Regarding the protective dome, the essence is a "shield" or a tunnel segment, which is a large prefabricated segment produced in batches in a factory.

[0010] The segment is fixed on the tunnel by a lifting tool, and as the shield tunneling machine moves, the segment is laid and installed.

[0011] As known, the segment is combined to form a cylinder to protect the tunnel, and then the segment is fixed by screws. Since the segment is a large piece and the space in the tunnel is limited, the segment is divided into independent units and then installed in the tunnel.

[0012] The advantage is to avoid the space limitation of the tunnel, and no large mechanical hand is needed for carrying, and the disadvantage also exists, the spliced pipe pieces are spliced at the splicing position no matter how high-precision prefabricated parts are used, and the splicing joint cannot resist the seepage phenomenon, therefore, after the pipe piece installation is completed, a person installs a waterproof piece, and finally pours concrete on the basis of the waterproof piece;

[0013] In order to reduce the seepage phenomenon after the pipe piece splicing is completed, the inventor puts forward a new pipe piece structure, and therefore, the application provides a protective dome of a shield tunneling machine for station infrastructure construction, so as to solve the above problems. SUMMARY

[0014] The application aims to solve the problem that the seepage phenomenon cannot be solved after the installation of the traditional protective dome, and the waterproof piece still needs to be fully covered and installed.

[0015] In order to achieve the above purpose, the application provides the following basic scheme:

[0016] A protective dome of a shield tunneling machine for station infrastructure construction, comprising a plurality of first pipe pieces with the same size as the rotation of the outside of the shield machine and a plurality of second pipe pieces which are detachably connected with the plurality of first pipe pieces; the first pipe pieces are spliced along the advancing direction of the shield machine, and the first pipe pieces on the same plane are spliced into a cylinder;

[0017] The second pipe pieces are arranged on the inner side of the first pipe pieces, the second pipe pieces change the splicing joint formed by the splicing of the first pipe pieces along the advancing direction of the shield machine, and the second pipe pieces change the splicing joint formed by the splicing of the first pipe pieces on the same plane.

[0018] Further, the inner walls of the first pipe pieces are each provided with a containing groove, when the first pipe pieces are spliced and form a cylinder, the containing grooves also form a cylinder, the first pipe pieces are contact spliced along the advancing direction of the shield machine, the contact splicing comprises a first end portion of a front first pipe piece and a second end portion of a rear first pipe piece, a plurality of circular grooves are formed on the first end portion, a circular block is fixedly connected with the position corresponding to the circular groove on the second end portion, and the circular block is clamped with the circular groove.

[0019] Further, the first pipe pieces are inserted spliced on the same plane, the inserted splicing comprises a third end portion of a front first pipe piece and a fourth end portion of a rear first pipe piece, a clamping block is arranged on the third end portion, a clamping groove is arranged on the fourth end portion, and the clamping block is connected with the clamping groove.

[0020] Further, expansion screw holes are formed on the first pipe pieces, expansion screws are connected in the expansion screw holes, and the first pipe pieces and the rock-soil layer excavated based on the shield machine are connected through the expansion screws.

[0021] Further, the second segment includes a connecting block and a connecting plate, the connecting block is filled in the accommodating groove, the connecting block blocks the joint gap formed by the splicing of the first segments in the same plane, the connecting plate is larger than the connecting block in size and is fixed on both sides of the connecting block, and the connecting plate blocks the joint gap formed by the splicing of the first segments along the advancing direction of the shield tunneling machine.

[0022] Further, the connecting block is provided with a connecting hole, and a connecting screw is connected to the connecting hole, so that the second segment and the first segment are connected through the connecting screw.

[0023] Further, the connecting plate is spliced between adjacent connecting plates, one end of one of the connecting plates is provided with a groove, one end of the other connecting plate is fixedly connected with a protrusion, and the protrusion is clamped with the groove.

[0024] Further, the connecting hole is provided with sealing glue, and the sealing glue is saturatedly filled in the connecting hole.

[0025] Further, the bottom of the connecting plate is in contact with the joint gap formed by the splicing of the first segments along the advancing direction of the shield tunneling machine, and a rubber extrusion pad is fixedly connected to the bottom of the connecting plate.

[0026] The principle and effect of the scheme are that:

[0027] 1. Compared with the prior art, the core of the present application is the second segment, the traditional segment is the first segment, and the second segment is arranged on the basis of the first segment, the joint gap formed by the splicing of the first segments is changed through the connection of the second segment and the first segment, the joint gap formed by the splicing of the first segments along the advancing direction of the shield tunneling machine is changed by the second segment, and the joint gap formed by the splicing of the first segments in the same plane is changed by the second segment.

[0028] 2. Compared with the prior art, when the position of the joint gap changes, if the water seepage cannot pass through the second segment, the water seepage phenomenon is naturally slowed down, and the subsequent layout of the waterproof sheet does not need to be globally arranged, but only needs to be arranged at the connecting position of the second segment, thereby saving the use amount of the waterproof sheet.

[0029] 3. Compared with the prior art, the second segment and the first segment in the structure are both prefabricated parts, and there is no processing difficulty and construction difficulty, and the splicing mode is still adopted, although the joint gap still exists, but due to the relationship of the second segment, the position of the joint gap changes, so that the joint gap formed by the first segment is affected by the second segment and cannot seep out. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative effort based on these drawings.

[0031] Figure 1 A structure schematic diagram of a protective dome of a shield machine for station infrastructure shield tunneling is shown in the embodiments of the present application;

[0032] Figure 2 A structure schematic diagram of a protective dome of a shield machine for station infrastructure shield tunneling is shown in the embodiments of the present application;

[0033] Figure 3 A structure schematic diagram of a protective dome of a shield machine for station infrastructure shield tunneling is shown in the embodiments of the present application;

[0034] Figure 4 A structure schematic diagram of a protective dome of a shield machine for station infrastructure shield tunneling is shown in the embodiments of the present application;

[0035] Figure 5 A structure schematic diagram of a protective dome of a shield machine for station infrastructure shield tunneling is shown in the embodiments of the present application;

[0036] Figure 6 A structure schematic diagram of a protective dome of a shield machine for station infrastructure shield tunneling is shown in the embodiments of the present application. DETAILED DESCRIPTION

[0037] In order to further illustrate the technical means and effects adopted by the present application to achieve the predetermined application purposes, the specific embodiments, structures, features and effects according to the present application will be described in detail below in combination with the drawings and preferred embodiments.

[0038] The reference signs in the drawings of the specification include: a first segment 1, a containing groove 2, an expansion screw hole 3, a clamping block 4, a connecting block 5, a connecting plate 6, a connecting hole 7, a protruding block 8, a recess 9, a sealing glue 10, a circular groove 11, a circular block 12, a rubber extrusion pad 13, a rock-soil layer 14, a prefabricated segment 15.

[0039] Before introducing the present case, first see the specification Figure 2 , Figure 2For the installation layout of the existing pipe piece, a cylinder is formed by splicing a plurality of prefabricated pipe piece 15 structures, which is installed on the rock-soil layer 14, thereby avoiding the collapse of the rock-soil layer 14, and in this process, there is a water seepage phenomenon of the rock-soil layer 14, from Figure 2 It can be seen that the splicing point of the pipe piece is the most serious area of water seepage, and the new pipe piece structure is designed to alleviate this situation;

[0040] The implementation is, for example Figure 1 , Figure 3 , Figure 4 , and Figure 5 and Figure 6 as shown:

[0041] A protective dome of a shield machine for tunneling of a station infrastructure, comprising a plurality of first segments 1 having the same size as the outer rotation of the shield machine and a plurality of second segments 2 detachably connected to the plurality of first segments 1.

[0042] The first segments 1 are spliced along the advancing direction of the shield machine, and the first segments 1 in the same plane are spliced into a cylinder.

[0043] The second segments are arranged on the inner side of the first segments 1, and the second segments change the splicing seams formed by splicing the first segments 1 along the advancing direction of the shield machine, and the second segments change the splicing seams formed by splicing the first segments 1 in the same plane.

[0044] Regarding the splicing seams formed by splicing the first segments 1 along the advancing direction of the shield machine:

[0045] As shown in Figure 4 :

[0046] Since the shield machine will advance, the supporting force disappears after the shield machine advances, so the first segments 1 need to be spliced, and the splicing seams formed by splicing the first segments 1 along the advancing direction of the shield machine will form second water seepage points;

[0047] Regarding the splicing seams formed by splicing the first segments 1 in the same plane:

[0048] As shown in Figure 4 :

[0049] Since the shield machine will advance, the supporting force disappears after the shield machine advances, so the first segments 1 need to be spliced, and the splicing seams formed by splicing the first segments 1 in the same plane will form first water seepage points;

[0050] The structure focuses on solving the water seepage problems of the first water seepage points and the second water seepage points:

[0051] Firstly: the inner wall of the first pipe piece 1 is provided with a containing groove 2, when the first pipe piece 1 is spliced to form a cylinder, the containing groove 2 also forms a cylinder, the first pipe piece 1 is spliced in contact along the advancing direction of the shield machine, the contact splicing includes the first end of the first pipe piece 1 of the previous piece and the second end of the first pipe piece 1 of the next piece, a plurality of circular grooves 11 are formed on the first end, a circular block 12 is fixedly connected to the position corresponding to the circular groove 11 on the second end, and the circular block 12 is clamped with the circular groove 11.

[0052] The first pipe piece 1 is spliced in insertion on the same plane, the insertion splicing includes the third end of the first pipe piece 1 of the previous piece and the fourth end of the first pipe piece 1 of the next piece, the third end is provided with a clamping block 4, the fourth end is provided with a clamping groove, and the clamping block 4 is connected with the clamping groove.

[0053] The insertion splicing and the contact splicing are both for better splicing of the first pipe piece 1.

[0054] The purpose of arranging the containing groove 2 is to facilitate the installation of the second pipe piece.

[0055] For the connection of the first pipe piece 1, the first pipe piece 1 is provided with an expansion screw hole 3, the expansion screw hole 3 is connected with an expansion screw, and the first pipe piece 1 and the rock-soil layer 14 excavated based on the shield machine are connected through the expansion screw.

[0056] The first pipe piece 1 is fixed.

[0057] Then the core of the case is:

[0058] The second pipe piece includes a connecting block 5 and a connecting plate 6, the connecting block 5 is filled into the containing groove 2, the splicing joint formed by splicing the first pipe pieces 1 on the same plane, that is, the first water seepage point, is blocked by the connecting block 5, the size of the connecting plate 6 is greater than that of the connecting block 5, and the connecting plate 6 is fixedly connected on both sides of the connecting block 5, the splicing joint formed by splicing the first pipe pieces 1 along the advancing direction of the shield machine is blocked by the connecting plate 6, that is, the second water seepage point is blocked by the connecting plate 6.

[0059] After the first pipe piece 1 is connected with the second pipe piece, the second pipe piece needs to be fixed, the connecting block 5 is provided with a connecting hole 7, the connecting hole 7 is connected with a connecting screw, and the second pipe piece and the first pipe piece 1 are connected through the connecting screw.

[0060] Secondly:

[0061] After the first water seepage point is blocked by the connecting block 5 and the second water seepage point is blocked by the connecting plate 6, the problem to be considered is the water seepage problem after the second pipe piece is spliced.

[0062] Specifically:

[0063] The connecting plates 6 are spliced together, one end of one connecting plate 6 is provided with a groove 9, and one end of another connecting plate 6 is fixedly connected with a protrusion 8, the protrusion 8 is clamped with the groove 9, and the connecting position of the protrusion 8 and the groove 9 is filled with sealant 10, and the sealant 10 is saturatedly filled in the connecting position of the protrusion 8 and the groove 9.

[0064] The sealant 10 is used to solve the water seepage problem of the connecting position of the protrusion 8 and the groove 9.

[0065] Finally, the accommodating groove 2 and the connecting block 5 are saturatedly filled and placed, the bottom of the connecting plate 6 is in contact with a splicing joint formed by splicing the first segment 1 along the advancing direction of the shield tunneling machine, and the rubber extrusion pad 13 is fixedly connected to the bottom of the connecting plate 6, and the waterproof effect of the second water seepage point is strengthened by the rubber extrusion pad 13.

[0066] The structure solves the problem that the water seepage phenomenon cannot be solved after the traditional protective dome is installed, and the waterproof sheet still needs to be fully covered and installed. The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the technical solution of the present application, and any equivalent embodiments with equivalent changes are equivalent. Any modification, equivalent change and modification of the above embodiments according to the technical essence of the present application, which does not depart from the technical solution of the present application, still belongs to the scope of the technical solution of the present application.

Claims

1. A protective dome for a tunnel boring machine for tunnel boring of a station infrastructure, characterized in that The first segments have the same size as the rotation of the shield machine, and the second segments are detachably connected to the first segments. The first segments are spliced along the advancing direction of the shield machine, and the first segments in the same plane are spliced into a cylinder. The second segments are arranged on the inner side of the first segments, and the second segments change the splicing joint formed by the splicing of the first segments along the advancing direction of the shield machine. The inner walls of the first segments are provided with accommodating grooves, and the accommodating grooves also form a cylinder after the splicing of the first segments into a cylinder. The first segments are spliced in contact along the advancing direction of the shield machine, and the contact splicing includes a first end portion of a front first segment and a second end portion of a rear first segment. The first end portion is provided with a plurality of circular grooves, and the second end portion is fixedly connected with a circular block corresponding to the circular grooves. The first segments are spliced in insertion in the same plane, and the insertion splicing includes a third end portion of a front first segment and a fourth end portion of a rear first segment. The third end portion is provided with a clamping block, and the fourth end portion is provided with a clamping groove.

2. A protective dome for a tunnel boring machine for tunnel boring of a station infrastructure according to claim 1, characterized in that The second segments include a connecting block and a connecting plate, the connecting block is filled into the accommodating grooves, the splicing joint formed by the splicing of the first segments in the same plane is blocked by the connecting block, the size of the connecting plate is larger than that of the connecting block, and the connecting plate is fixedly connected on both sides of the connecting block.

3. A protective dome for a tunnel boring machine for tunnel boring of a station infrastructure according to claim 2, characterized in that The splicing joint formed by the splicing of the first segments along the advancing direction of the shield machine is blocked by the connecting plate.

4. A protective dome for a tunnel boring machine for tunnel boring of a station infrastructure according to claim 3, characterized in that One end of one of the connecting plates is provided with a groove, and the other end of the other connecting plate is fixedly connected with a protrusion. The connecting part of the protrusion and the groove is provided with sealing glue. The first segments are provided with expansion screw holes, the expansion screw holes are connected with expansion screws, and the first segments and the rock stratum based on the shield machine are connected through the expansion screws. The connecting block is provided with a connecting hole, the connecting hole is connected with a connecting screw, and the second segments and the first segments are connected through the connecting screw. The bottom of the connecting plate is in contact with the splicing joint formed by the splicing of the first segments along the advancing direction of the shield machine, and a rubber extrusion pad is fixedly connected to the bottom of the connecting plate.

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