Protective dome of shield tunneling machine for shield tunneling in station infrastructure construction

Abstract

The invention relates to the technical field of protective domes, and particularly discloses a protective dome of a shield tunneling machine for shield tunneling in station infrastructure construction, which comprises a plurality of first duct pieces with the same size as the rotation outside the shield tunneling machine and a plurality of second duct pieces detachably connected with the first duct pieces; the first pipe pieces in the advancing direction of the shield tunneling machine are spliced, and the first pipe pieces on the same plane are spliced into a cylinder; the second duct pieces are arranged on the inner sides of the first duct pieces, the second duct pieces change splicing seams formed by splicing the first duct pieces in the advancing direction of the shield tunneling machine, and the second duct pieces change splicing seams formed by splicing the first duct pieces on the same plane. And the waterproof sheet still needs to be fully covered for installation.

Description

Technical Field

[0001] The present application relates to the technical field of protective domes, and specifically discloses a protective dome for a shield machine used for shield tunneling in station infrastructure construction. Background Art

[0002] The shield machine is a large underground excavation equipment. When excavating underground, the shield machine is used to excavate the front figure and then pass the soil to the rear. When the shield machine is working, the surrounding soil will loosen and collapse;

[0003] Regarding this collapse phenomenon:

[0004] It is necessary to describe the shield machine in detail:

[0005] The shield machine works through a drill bit. The cutter head on the front of the drill bit is a roller made of carbide steel. The roller rolls to crush the rock into pieces. As the shield machine moves, the prototype of the tunnel is formed.

[0006] Due to the movement of the shield machine, the soil in front of the shield machine has no support, the surrounding soil will loosen and collapse;

[0007] Since the shield machine is a very large project, it has a transport platform, a transport bridge and a transport vehicle. If the collapse embryo collapses when the shield machine moves, it will have a huge impact on the entire shield machine project.

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

[0009] Regarding the protective dome, it is essentially the "shield" or tunnel segment, which is a prefabricated segment mass-produced in a large factory;

[0010] The pipe segments are fixed to the tunnel prototype by means of a hanger, and the laying and installation of the pipe segments are realized as the shield machine moves;

[0011] As we all know, the segments are laid in a cylindrical shape to protect the tunnel prototype, and then the segments are fixed with screws. Since the segments are large pieces and the space in the tunnel is limited, the segments are split into independent individuals and then installed in the tunnel prototype.

[0012] The advantage is that it avoids the space limitation of the tunnel and does not need to be handled by a large manipulator. However, the disadvantage also exists. No matter how high-precision prefabricated parts are used for the spliced ​​segments, there will be splicing seams at the splicing positions. The splicing seams cannot resist water seepage. Therefore, after the segments are installed, people will install waterproof sheets and finally pour concrete on the basis of the waterproof sheets.

[0013] In order to reduce the water seepage phenomenon after the segments are spliced, the inventor proposes a new segment structure. To this end, the present invention provides a protective dome for a shield machine used for shield tunneling in station infrastructure construction, so as to solve the above-mentioned problem. Summary of the invention

[0014] The purpose of the present invention is to solve the problem that after the traditional protective dome is installed, the water seepage phenomenon cannot be solved and the waterproof sheet still needs to be installed to fully cover the roof.

[0015] In order to achieve the above object, the present invention provides the following basic scheme:

[0016] A protective dome of a shield machine for shield tunneling in station infrastructure construction, comprising a plurality of first segments having the same size as the rotation of the outer portion of the shield machine and second segments detachably connected to the plurality of first segments; the first segments along the forward direction of the shield machine are spliced, and the first segments on the same plane are spliced ​​into a cylinder;

[0017] The second pipe segment is arranged on the inner side of the first pipe segment, and the second pipe segment changes the splicing seam formed by splicing the first pipe segments along the forward direction of the shield machine, and the second pipe segment changes the splicing seam formed by splicing the first pipe segments on the same plane.

[0018] Furthermore, the inner walls of the first pipe segments are each provided with a receiving groove. When the first pipe segments are spliced ​​to form a cylinder, the receiving groove also forms a cylinder. The first pipe segments along the forward direction of the shield machine are contact-spliced. The contact-splicing includes a first end of the first pipe segment located in the front block and a second end of the first pipe segment located in the rear block. A plurality of circular grooves are provided on the first end, and a round block is fixedly connected to the position of the second end corresponding to the circular groove, and the round block is clamped in the circular groove.

[0019] Furthermore, the first pipe segments on the same plane are inserted and spliced, and the inserted splicing includes a third end of the first pipe segment located at the front block and a fourth end of the first pipe segment located at the back block, the third end is provided with a clamping block, the fourth end is provided with a clamping slot, and the clamping block is connected to the clamping slot.

[0020] Furthermore, an expansion screw hole is opened on the first pipe segment, and an expansion screw is connected in the expansion screw hole, so that the first pipe segment and the rock and soil layer excavated by the shield machine are connected through the expansion screw.

[0021] Furthermore, the second pipe segment includes a connecting block and a connecting plate, the connecting block is filled in the accommodating groove, the splicing seam formed by splicing the first pipe segments on the same plane is blocked by the connecting block, the size of the connecting plate is larger than the size of the connecting block and the connecting plate is fixed on both sides of the connecting block, and the splicing seam formed by splicing the first pipe segments along the forward direction of the shield machine is blocked by the connecting plate.

[0022] Furthermore, a connecting hole is opened on the connecting block, and a connecting screw is connected to the connecting hole, and the second pipe segment and the first pipe segment are connected by the connecting screw.

[0023] Furthermore, adjacent connecting plates are spliced, wherein a groove is formed at the end of one connecting plate, and a protrusion is fixedly connected to the end of another connecting plate, and the protrusion is engaged with the groove.

[0024] Furthermore, a sealant is filled at the connection between the protrusion and the groove, and the sealant is saturatedly filled at the connection between the protrusion and the groove.

[0025] Furthermore, the bottom of the connecting plate contacts the joint seam formed by the first pipe segments along the advancing direction of the shield machine, and a rubber extrusion pad is fixedly connected to the bottom of the connecting plate.

[0026] The principle and effect of this scheme are:

[0027] 1. Compared with the prior art, the core of the present invention is the second pipe segment. The traditional pipe segment is the first pipe segment. In this case, the second pipe segment is arranged on the basis of the first pipe segment. Through the connection between the second pipe segment and the first pipe segment, the splicing seam after the first pipe segment itself is connected is changed. The second pipe segment changes the splicing seam formed by splicing the first pipe segments along the forward direction of the shield machine. The second pipe segment changes the splicing seam formed by splicing the first pipe segments on the same plane.

[0028] 2. Compared with the prior art, when the position of the joint changes, if the water seepage can pass through the first pipe segment but cannot pass through the second pipe segment, the water seepage phenomenon is naturally slowed down. The subsequent layout of the waterproof sheet does not require a global layout, and it is only necessary to implement the layout of the waterproof sheet at the connection of the second pipe segment, thereby saving the use of the waterproof sheet.

[0029] 3. Compared with the prior art, the second pipe segment and the first pipe segment in the present structure are both prefabricated parts, and there is no difficulty in processing or construction. The splicing mode is still adopted. Although there is still a splicing seam, the position of the splicing seam changes due to the relationship with the second pipe segment, so that the splicing seam formed by the first pipe segment is affected by the second pipe segment and cannot seep out. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A schematic structural diagram of a protective dome of a shield machine for shield tunneling in station infrastructure construction proposed in an embodiment of the present application is shown;

[0032] Figure 2 A schematic diagram of the prior art structure of a protective dome of a shield machine for shield tunneling in station infrastructure construction proposed in an embodiment of the present application is shown;

[0033] Figure 3 A schematic diagram of the structure of the clamping connection between the protrusion and the groove in the protective dome of a shield machine for shield tunneling in station infrastructure construction proposed in an embodiment of the present application is shown;

[0034] Figure 4 A schematic diagram showing the positions of a first water seepage point and a second water seepage point in a protective dome of a shield machine for shield tunneling in station infrastructure construction proposed in an embodiment of the present application is shown;

[0035] Figure 5 A schematic diagram of the structure of the clamping connection between the round block and the round groove in the protective dome of a shield machine for shield tunneling in station infrastructure construction proposed in an embodiment of the present application is shown;

[0036] Figure 6 A schematic structural diagram of a compression pad in a protective dome of a shield machine for shield tunneling in station infrastructure construction proposed in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0037] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0038] The figure marks in the drawings of the specification include: first pipe segment 1, accommodating groove 2, expansion screw hole 3, clamping block 4, connecting block 5, connecting plate 6, connecting hole 7, protrusion 8, groove 9, sealant 10, circular groove 11, circular block 12, rubber extrusion pad 13, rock and soil layer 14, prefabricated pipe segment 15.

[0039] Before introducing this case, please read the instructions first Figure 2 , Figure 2For the installation layout of the existing pipe segments, a cylinder is formed by splicing a plurality of prefabricated pipe segments 15 and then installed on the rock and soil layer 14 to prevent the rock and soil layer 14 from collapsing. In this process, water seepage will occur in the rock and soil layer 14. Figure 2 It can be seen that the joints of the pipe segments are the worst hit areas for water seepage. In order to alleviate this situation, this solution designs a new pipe segment structure;

[0040] Implementation example Figure 1 , Figure 3 , Figure 4 ,and Figure 5 and Figure 6 As shown:

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

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

[0043] The second segment is arranged on the inner side of the first segment 1, and the second segment changes the joint seams formed by the first segments 1 along the advancing direction of the shield machine, and the second segment changes the joint seams formed by the first segments 1 on the same plane.

[0044] Regarding the joint seam formed by the first segment 1 along the advancing direction of the shield machine:

[0045] like Figure 4 As shown:

[0046] Since the shield machine will move forward, the supporting force disappears when the shield machine moves forward, so the first pipe segments 1 need to be spliced ​​together, and the splicing seams formed by the splicing of the first pipe segments 1 along the forward direction of the shield machine will form the second water seepage point;

[0047] Regarding the joint seam formed by the first pipe segments 1 on the same plane:

[0048] like Figure 4 As shown:

[0049] Since the shield machine moves forward, the supporting force disappears when the shield machine moves forward, so the first segments 1 need to be spliced ​​together, and the splicing seams formed by the splicing of the first segments 1 on the same plane will form the first water seepage point;

[0050] This structure focuses on solving the water seepage problem at the first and second water seepage points:

[0051] Firstly: the inner wall of the first pipe segment 1 is provided with a receiving groove 2. When the first pipe segment 1 is spliced ​​and formed into a cylinder, the receiving groove 2 also forms a cylinder. The first pipe segment 1 along the forward direction of the shield machine is contact-spliced. The contact-splicing includes a first end of the first pipe segment 1 located in the front block and a second end of the first pipe segment 1 located in the rear block. A plurality of circular grooves 11 are formed on the first end. A round block 12 is fixedly connected to the position of the second end corresponding to the circular groove 11. The round block 12 is clamped with the circular groove 11.

[0052] The first pipe segments 1 on the same plane are inserted and spliced, and the inserted splicing includes the third end of the first pipe segment 1 located at the front block and the fourth end of the first pipe segment 1 located at the back block, 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 to the clamping groove.

[0053] Both the insertion type splicing and the contact type splicing are for better splicing of the first pipe segment 1:

[0054] The purpose of providing the receiving groove 2 is to facilitate the installation of the second pipe segment;

[0055] Regarding the connection of the first pipe segment 1: an expansion screw hole 3 is opened on the first pipe segment 1, and an expansion screw is connected in the expansion screw hole 3, and the first pipe segment 1 and the rock and soil layer 14 excavated by the shield machine are connected by the expansion screw.

[0056] The first pipe segment 1 is fixed.

[0057] Then comes the core of the case:

[0058] The second pipe segment includes a connecting block 5 and a connecting plate 6, wherein the connecting block 5 is filled in the receiving groove 2, and the connecting seam formed by the first pipe segments 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 larger than the size of the connecting block 5 and the connecting plate 6 is fixedly connected to both sides of the connecting block 5, and the connecting seam formed by the first pipe segments 1 along the forward 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 segment 1 is connected to the second pipe segment, the second pipe segment needs to be fixed. A connecting hole 7 is opened on the connecting block 5. The connecting hole 7 is connected to a connecting screw, and the second pipe segment and the first pipe segment 1 are connected by the connecting screw.

[0060] Secondly:

[0061] When the first water seepage point is blocked by the connection block 5 and the second water seepage point is blocked by the connection plate 6, the problem that needs to be considered is the water seepage problem after the second pipe segment is spliced;

[0062] Specific:

[0063] Adjacent connecting plates 6 are spliced, one of the connecting plates 6 has a groove 9 at its end, and the other connecting plate 6 has a protrusion 8 fixed to its end, the protrusion 8 is clamped with the groove 9, and a sealant 10 is filled at the connection between the protrusion 8 and the groove 9, and the sealant 10 is saturated at the connection between the protrusion 8 and the groove 9.

[0064] The water seepage problem at the connection between the protrusion 8 and the groove 9 is solved by the sealant 10 .

[0065] Finally: the receiving groove 2 and the connecting block 5 are filled saturatedly and placed, the bottom of the connecting plate 6 is in contact with the joint seam formed by the first pipe segment 1 along the forward direction of the shield machine, and a rubber extrusion pad 13 is fixed to the bottom of the connecting plate 6 to enhance the anti-water seepage effect of the second water seepage point.

[0066] This structure solves the problem that after the traditional protective dome is installed, the water seepage problem still cannot be solved, and the waterproof sheet still needs to be fully covered during installation. The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical content disclosed above into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the present invention. However, any brief modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A protective dome for a shield machine used for shield tunneling in station infrastructure construction, characterized in that: It includes a plurality of first segments having the same size as the rotation of the outer portion of the shield machine and a second segment detachably connected to the plurality of first segments; The first segments along the advancing direction of the shield machine are spliced, and the first segments on the same plane are spliced ​​into a cylinder; The second pipe segment is arranged on the inner side of the first pipe segment, and the second pipe segment changes the splicing seam formed by splicing the first pipe segments along the forward direction of the shield machine, and the second pipe segment changes the splicing seam formed by splicing the first pipe segments on the same plane.

2. The protective dome of a shield machine for shield tunneling in station infrastructure construction according to claim 1 is characterized in that: The inner walls of the first pipe segments are all provided with accommodating grooves. When the first pipe segments are spliced ​​and formed into a cylinder, the accommodating grooves also form a cylinder. The first pipe segments along the forward direction of the shield machine are contact-spliced. The contact-splicing includes a first end of the first pipe segment located in the front block and a second end of the first pipe segment located in the rear block. A plurality of circular grooves are provided on the first end, and a round block is fixedly connected to the position of the second end corresponding to the circular groove, and the round block is clamped in the circular groove.

3. The protective dome of a shield machine for shield tunneling in station infrastructure construction according to claim 2, characterized in that: The first pipe segments on the same plane are inserted and spliced, and the inserted splicing includes a third end of the first pipe segment located in the front block and a fourth end of the first pipe segment located in the back block, the third end is provided with a clamping block, the fourth end is provided with a clamping groove, and the clamping block is connected to the clamping groove.

4. A protective dome for a shield machine for shield tunneling in station infrastructure construction according to claim 2 or 3, characterized in that: An expansion screw hole is opened on the first pipe segment, and an expansion screw is connected in the expansion screw hole. The first pipe segment and the rock and soil layer excavated by the shield machine are connected through the expansion screw.

5. The protective dome of a shield machine for shield tunneling in station infrastructure construction according to claim 3, characterized in that: The second pipe segment includes a connecting block and a connecting plate. The connecting block is filled in the accommodating groove. The splicing seam formed by splicing the first pipe segments on the same plane is blocked by the connecting block. The size of the connecting plate is larger than the size of the connecting block and the connecting plate is fixed on both sides of the connecting block. The splicing seam formed by splicing the first pipe segments along the forward direction of the shield machine is blocked by the connecting plate.

6. The protective dome of a shield machine for shield tunneling in station infrastructure construction according to claim 5, characterized in that: The connection block is provided with a connection hole, the connection hole is connected with a connection screw, and the second pipe segment and the first pipe segment are connected by the connection screw.

7. The protective dome of a shield machine for shield tunneling in station infrastructure construction according to claim 6, characterized in that: Adjacent connecting plates are spliced, wherein a groove is formed at the end of one connecting plate, and a protrusion is fixedly connected to the end of another connecting plate, and the protrusion is clamped in the groove.

8. The protective dome of a shield machine for shield tunneling in station infrastructure construction according to claim 7, characterized in that: The connection between the protrusion and the groove is filled with sealant, and the sealant is saturatedly filled in the connection between the protrusion and the groove.

9. The protective dome of a shield machine for shield tunneling in station infrastructure construction according to claim 7 or 8, characterized in that: The bottom of the connecting plate contacts the joint seam formed by the first pipe 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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