Segment limiting device and tunnel supporting system

Abstract

The utility model provides a pipe piece limiting device and a tunnel supporting system, and relates to the technical field of tunnel construction, and the pipe piece limiting device comprises a pipe piece, a grouting bag, a grouting pipeline and a grouting assembly. A through hole is formed in the pipe piece; a bag opening of the grouting bag corresponds to the through hole, and the grouting bag is arranged between the pipe piece and the rock wall. An output port of the grouting pipeline is communicated with a bag opening of the grouting bag; the grouting assembly is located on the side, away from the grouting bag, of the pipe piece, the reversing valve comprises a first connector, a second connector and a third connector, the first grouting piece communicates with the first connector, the second grouting piece communicates with the second connector, and the third connector communicates with the grouting pipeline. The pipe piece limiting device is used for limiting a pipe piece, the first grouting piece and the second grouting piece are arranged and used for conveying different grouting materials, the grouting bags correspond to through holes of the pipe piece, and the grouting materials are mixed through the reversing valve and conveyed into the grouting bags through the grouting pipeline, so that the grouting bags can abut against and limit the pipe piece after being gradually expanded; and the condition that the duct piece floats or deviates is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a segment limiting device and a tunnel support system. Background Art

[0002] Tunnel segments are commonly used supporting structural components in tunnel construction. During tunnel excavation, the shield machine or pipe jacking machine advances forward and quickly installs segments behind the tunnel wall to form a permanent lining of the tunnel. Adjacent segments are installed and connected. However, due to groundwater, the segments may float or deviate during the installation process, which in turn affects the installation and positioning of the segments during tunnel construction. Utility Model Content

[0003] The utility model aims to provide a segment limiting device and a tunnel support system, wherein the segment limiting device is used to limit the segment, a first grouting piece and a second grouting piece are provided for conveying different grouting materials, a reversing valve can respectively control the opening or closing of the first interface, the second interface and the third interface, a grouting bag corresponds to the through hole of the segment, the grouting material is mixed by the reversing valve and transmitted to the grouting bag through the grouting pipe, so that the grouting bag can abut and limit the segment after gradual expansion, thereby reducing the floating or displacement of the segment, with low overall cost and less working time, which is beneficial to the connection and installation of the segment during tunnel construction.

[0004] A first aspect of the utility model provides a pipe segment limiting device, which comprises a pipe segment, a grouting bag, a grouting pipeline and a grouting assembly.

[0005] A pipe segment, wherein the pipe segment is provided with a through hole;

[0006] A grouting bag, the bag opening of which corresponds to the through hole, and the grouting bag is arranged between the pipe segment and the rock wall;

[0007] A grouting pipe, wherein the output port of the grouting pipe is connected to the bag opening of the grouting bag;

[0008] A grouting assembly, wherein the grouting assembly is located on the side of the pipe segment away from the grouting bag, the grouting assembly comprises a reversing valve, a first grouting piece and a second grouting piece, the reversing valve comprises a first interface, a second interface and a third interface, the output end of the first grouting piece is connected to the first interface, the output end of the second grouting piece is connected to the second interface, and the third interface is connected to the input port of the grouting pipe.

[0009] In a possible embodiment of the present invention, there are multiple through holes, there are multiple grouting bags, and one grouting bag corresponds to one through hole.

[0010] In a possible embodiment of the present invention, a plurality of the through holes are arranged around the circumference of the tube sheet.

[0011] In a possible embodiment of the present invention, at least a portion of the grouting pipe is disposed in the through hole.

[0012] In a possible embodiment of the present invention, the bag opening of the grouting bag is located at the hole wall of the through hole.

[0013] In a possible embodiment of the present invention, the grouting bag forms a pear-shaped structure after being filled with grouting material.

[0014] In a possible embodiment of the present utility model, the reversing valve further includes a fourth interface, and the fourth interface is provided with an air vent.

[0015] In a possible embodiment of the present invention, the first grouting component includes a first grouting machine and a first pipeline, the first grouting machine is connected to the input port of the first pipeline, and the output port of the first pipeline is connected to the first interface.

[0016] In a possible embodiment of the present invention, the second grouting component includes a second grouting machine and a second pipeline, the second grouting machine is connected to the input port of the second pipeline, and the output port of the second pipeline is connected to the second interface.

[0017] A second aspect of the utility model provides a tunnel support system, comprising the segment limiting device described in any one of the above embodiments.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model provides a segment limiting device and a tunnel support system, the segment limiting device is used to limit the segment, a first grouting part and a second grouting part are provided for conveying different grouting materials, the reversing valve can respectively control the opening or closing of the first interface, the second interface and the third interface, the grouting bag corresponds to the through hole of the segment, the grouting material is mixed through the reversing valve and transmitted to the grouting bag through the grouting pipe, so that the grouting bag can abut and limit the segment after gradual expansion, reducing the floating or displacement of the segment, the overall cost is low, less working hours are consumed, and it is beneficial to connect and install the segment during tunnel construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of a pipe segment limiting device provided in some embodiments of the utility model;

[0021] Figure 2 It is a schematic diagram of the application of the pipe segment limiting device provided in some embodiments of the utility model;

[0022] Figure 3 A schematic diagram of the structure of a grouting assembly of a segment limiting device provided in some embodiments of the utility model;

[0023] Figure 4 This is a schematic structural diagram of a grouting bag of a segment limiting device provided in some embodiments of the utility model.

[0024] Description of main component symbols;

[0025] 100-segment limiting device; 110-segment; 111-through hole; 120-grouting bag; 121-bag opening; 130-grouting pipeline; 140-grouting assembly; 141-reversing valve; 1411-first interface; 1412-second interface; 1413-third interface; 1414-fourth interface; 142-first grouting part; 1421-first grouting machine; 1422-first pipeline; 143-second grouting part; 1431-second grouting machine; 1432-second pipeline. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0033] Example 1

[0034] refer to Figure 1 As shown, an embodiment of the present application provides a segment limiting device 100 , which includes a segment 110 , a grouting bag 120 , a grouting pipe 130 and a grouting assembly 140 .

[0035] Specifically, combined Figures 1 to 3As shown, the pipe segment 110 is provided with a through hole 111; the bag opening 121 of the grouting bag 120 corresponds to the through hole 111, and the grouting bag 120 is arranged between the pipe segment 110 and the rock wall; the output port of the grouting pipe 130 is connected to the bag opening 121 of the grouting bag 120; the grouting assembly 140 is located on the side of the pipe segment 110 away from the grouting bag 120, and the grouting assembly 140 includes a reversing valve 141, a first grouting piece 142 and a second grouting piece 143, the reversing valve 141 includes a first interface 1411, a second interface 1412 and a third interface 1413, the output end of the first grouting piece 142 is connected to the first interface 1411, and the second grouting piece 143 is connected to the third interface 1413. The output end of the slurry piece 143 is connected to the second interface 1412, and the third interface 1413 is connected to the input port of the grouting pipe 130. The first grouting piece 142 and the second grouting piece 143 are provided for conveying different grouting materials. The reversing valve 141 can respectively control the opening or closing of the first interface 1411, the second interface 1412 and the third interface 1413. The grouting bag 120 corresponds to the through hole 111 of the pipe segment 110. The grouting material is mixed through the reversing valve 141 and transmitted to the grouting bag 120 through the grouting pipe 130, so that the grouting bag 120 can abut and limit the pipe segment 110 after gradual expansion, thereby reducing the floating or displacement of the pipe segment 110. The overall cost is low and the working time is less.

[0036] It should be noted that the pipe segment 110 is used in the tunnel construction process and is an indispensable component in the shield tunnel construction. The pipe segment 110 is used for the inner barrier and permanent lining structure of the tunnel. The main function of the pipe segment 110 is to support the soil around the tunnel excavation surface to prevent soil collapse; at the same time, it also plays the role of waterproofing, retaining soil and bearing internal and external loads (such as soil pressure, groundwater pressure, etc.), which plays an important role in the overall structural safety, waterproof performance and durability of the tunnel. The reversing valve 141 is used to adjust or change the flow direction of the medium, and can control the opening or closing of the interface valve to achieve different flow paths. For example, the reversing valve 141 can be a four-way valve, which is a fluid control valve.

[0037] It is understood that the grouting bag 120 is a consumable material used for grouting reinforcement. When used, the grouting bag will be placed at the location that needs to be reinforced or sealed. The grouting bag 120 can be a grouting bag, which is mainly made of high-strength fiber material, and then cement slurry, resin or other chemical slurry is injected through these bags to ensure that the slurry is evenly distributed, while reducing slurry loss and improving grouting efficiency and quality.

[0038] In one embodiment, optionally, reference Figure 2As shown, there are multiple through holes 111 and multiple grouting bags 120, and one grouting bag 120 corresponds to one through hole 111. Accordingly, the staff places the grouting bag 120 through the through hole 111 to facilitate grouting through the grouting bag 120. The effect of one grouting bag 120 as a fulcrum to limit the pipe segment 110 may not be understood. A grouting bag 120 can be set at each through hole 111 position to enhance the limiting effect and reduce the floating or displacement of the pipe segment 110.

[0039] Alternatively, if Figure 1 and Figure 2 As shown, a plurality of through holes 111 are arranged around the circumference of the segment 110, and grouting bags 120 are arranged at the positions of the plurality of through holes 111. Grouting is performed on the grouting bags 120 to expand and maintain a certain shape. The grouting bags 120 are located between the gaps between the segment 110 and the tunnel. When groundwater rises and lifts the segment 110 to change the position of the segment 110, the plurality of grouting bags 120 are located at different positions on the circumference of the segment 110. The plurality of grouting bags 120 work together to limit the position of the segment 110, which has a better limiting effect.

[0040] In one embodiment, optionally, reference Figure 1 As shown, the bag opening 121 of the grouting bag 120 is located at the hole wall of the through hole 111, and the bag opening 121 of the grouting bag 120 can be connected to the output port of the grouting pipe 130 to facilitate grouting of the grouting bag 120. When the grouting bag 120 expands after grouting and can abut between the pipe segment 110 and the rock wall, at this time, the staff only needs to operate inside the pipe segment 110, and there is no restriction on the position and operation method of the staff.

[0041] In summary, the segment limiting device 100 is used to limit the segment 110, and a first grouting piece 142 and a second grouting piece 143 are provided for conveying different grouting materials. The reversing valve 141 can respectively control the opening or closing of the first interface 1411, the second interface 1412 and the third interface 1413. The grouting bag 120 corresponds to the through hole 111 of the segment 110. The grouting material is mixed through the reversing valve 141 and transmitted to the grouting bag 120 through the grouting pipe 130, so that the grouting bag 120 can abut and limit the segment 110 after gradual expansion, thereby reducing the floating or displacement of the segment 110. The overall cost is low, less working hours are consumed, and it is beneficial to connect and install the segment 110 during tunnel construction.

[0042] Example 2

[0043] refer to Figure 1As shown, an embodiment of the present application provides another segment limiting device 100, which is used to limit the segment. The segment limiting device 100 includes a segment 110, a grouting bag 120, a grouting pipe 130 and a grouting assembly 140.

[0044] Specifically, combined Figures 1 to 3 As shown, the pipe segment 110 is provided with a through hole 111; the bag opening 121 of the grouting bag 120 corresponds to the through hole 111, and the grouting bag 120 is arranged between the pipe segment 110 and the rock wall; the output port of the grouting pipe 130 is connected with the bag opening 121 of the grouting bag 120, the grouting bag 120 corresponds to the through hole 111 of the pipe segment 110, and the grouting material is mixed through the reversing valve 141 and transmitted to the grouting bag 120 through the grouting pipe 130.

[0045] In this embodiment, the grouting assembly 140 is located on the side of the pipe segment 110 away from the grouting bag 120, and the grouting assembly 140 includes a reversing valve 141, a first grouting member 142 and a second grouting member 143. The reversing valve 141 includes a first interface 1411, a second interface 1412 and a third interface 1413. The output end of the first grouting member 142 is connected to the first interface 1411, and the output end of the second grouting member 143 is connected to the second interface 1412. The third interface 1413 is connected to the input port of the grouting pipe 130, and a first grouting piece 142 and a second grouting piece 143 are provided for conveying different grouting materials. The reversing valve 141 can respectively control the opening or closing of the first interface 1411, the second interface 1412 and the third interface 1413, so that the grouting bag 120 can abut and limit the pipe segment 110 after gradually expanding, thereby reducing the floating or displacement of the pipe segment 110, with lower overall cost and less working time.

[0046] In the related art, shield machine excavation requires grouting to fill the gap between the tunnel and the pipe segment, so that the pipe segment is in close contact with the surrounding soil or rock layer to form a relatively stable structural shape. However, in the rock layer with rich groundwater, the grouting slurry may be washed away, affecting the filling effect of the grouting slurry, causing the pipe segment to float or deviate. Therefore, the pipe segment limiting device of the present application can be used to limit the pipe segment. In one embodiment, optionally, refer to Figure 2As shown, there are multiple through holes 111 and multiple grouting bags 120, and one grouting bag 120 corresponds to one through hole 111. Accordingly, the staff places the grouting bag 120 through the through hole 111 to facilitate grouting through the grouting bag 120. The effect of one grouting bag 120 as a fulcrum to limit the pipe segment 110 may not be understood. A grouting bag 120 can be set at each through hole 111 position to enhance the limiting effect on the pipe segment and reduce the floating or displacement of the pipe segment 110.

[0047] Alternatively, if Figure 1 and Figure 2 As shown, a plurality of through holes 111 are arranged around the circumference of the segment 110, and grouting bags 120 are arranged at the positions of the plurality of through holes 111. Grouting is performed on the grouting bags 120 to expand the grouting bags 120 and maintain a certain shape. The grouting bags 120 are located between the gap between the segment 110 and the tunnel. When the groundwater rises and lifts the segment 110 to change the position of the segment 110, the plurality of grouting bags 120 are located at different positions on the circumference of the segment 110. The plurality of grouting bags 120 work together to limit the position of the segment 110, and have a better limiting effect. Exemplarily, the through holes are arranged at the top position of the segment 110 and the upper side of both sides of the top position (i.e., the 10 o'clock direction and the 2 o'clock direction). The segment 110 is limited by forming a limiting fulcrum through the plurality of grouting bags 120, so as to reduce the lateral deviation and floating of the segment 110.

[0048] Optionally, at least a portion of the grouting pipe 130 is disposed in the through hole 111, and the output port of the grouting pipe 130 is located in the through hole 111 so that the output port of the grouting pipe 130 can be connected to the grouting bag 120, thereby facilitating grouting of the grouting bag 120. Of course, the grouting pipe 130 can also be entirely in the through hole 111. On the one hand, the output port of the grouting pipe 130 can be connected to the grouting bag 120 for grouting operations. On the other hand, the through hole 111 fixes the position of the grouting pipe 130, and the input port of the grouting pipe 130 is connected to the third interface 1413 of the reversing valve 141, which is beneficial for the output of the grouting material into the grouting pipe 130.

[0049] In one embodiment, optionally, reference Figure 1As shown, the bag mouth 121 of the grouting bag 120 is located at the hole wall position of the through hole 111, and the bag mouth 121 of the grouting bag 120 can be connected with the output port of the grouting pipe 130 to facilitate grouting of the grouting bag 120. When the grouting bag 120 expands after grouting and can abut between the pipe segment 110 and the rock wall, at this time, the staff only needs to operate inside the pipe segment 110, and there is no restriction on the position and operation method of the staff. Of course, after the pipe segment 110 is limited by the pipe segment limiting device of the present application, the pipe segment limiting device only plays a short-term limiting role, which is convenient for the subsequent connection and installation of multiple pipe segments 110 to achieve the purpose of fixing the pipe segment 110.

[0050] Alternatively, if Figure 4 As shown, the grouting bag 120 forms a pear-shaped structure after being filled with grouting material. The pear-shaped grouting bag 120 has a wide bottom and a narrow top, which helps the grouting bag 120 to better adapt to irregular gaps or cracks, ensures that the grouting material can fill the space more fully, and makes the slurry evenly distributed after being injected under pressure. Since the top is narrow, it helps to discharge air during the grouting process and avoid the formation of bubbles, thereby improving the grouting quality. At the same time, it makes it easier to position and unfold the grouting bag 120 in a narrow or specific shape space. Exemplarily, the size of the bag body of the grouting bag 120 is 500mm×500mm, the size of the bag mouth of the grouting bag 120 is 50mm×50mm×350mm, and the volume of the grouting bag 120 is 20L to 30L.

[0051] In one embodiment, optionally, in combination Figure 1 and Figure 3 As shown, the reversing valve 141 also includes a fourth interface 1414, and the fourth interface 1414 is provided with an air vent, which has the functions of rapid exhaust and pressure regulation. The air vent can release compressed air to achieve rapid reversal or reduce system pressure. The air vent is used to facilitate the release of air pressure in the grouting bag 120 during the grouting process to maintain the air pressure balance in the grouting channel.

[0052] In one embodiment, optionally, reference Figure 3As shown, the first grouting part 142 includes a first grouting machine 1421 and a first pipeline 1422. The first grouting machine 1421 is connected to the input port of the first pipeline 1422, and the output port of the first pipeline 1422 is communicated with the first interface 1411, so that the first grouting machine 1421 is communicated with the first interface 1411 through the first pipeline 1422, and the slurry material in the first grouting machine 1421 is transferred to the grouting bag 120. Demonstratively, the first grouting machine 1421 can input pure water glass through the input port of the first pipeline 1422, and transfer it to the reversing valve 141 through the first interface 1411. The reversing valve 141 can control the opening or closing of the first interface 1411 to control the transmission amount of the first grouting machine 1421. It can be understood that pure water glass refers to industrial sodium silicate.

[0053] Optionally, the second grouting part 143 includes a second grouting machine 1431 and a second pipeline 1432, the second grouting machine 1431 is connected to the input port of the second pipeline 1432, and the output port of the second pipeline 1432 is connected to the second interface 1412. Accordingly, the second grouting machine 1431 is connected to the second interface 1412 through the second pipeline 1432, and the slurry material in the second grouting machine 1431 is transferred to the grouting bag 120. Exemplarily, the second grouting machine 1431 can input cement slurry through the input port of the second pipeline 1432, and transfer it to the reversing valve 141 through the second interface 1412. The reversing valve 141 can control the opening or closing of the second interface 1412 to control the transmission amount of the second grouting machine 1431.

[0054] Example 3

[0055] An embodiment of the utility model also provides a tunnel support system, including the segment limiting device 100 in embodiment 1 or embodiment 2. The tunnel support system is used to install and support the tunnel. The tunnel support system has all the beneficial effects of the segment limiting device 100, which will not be described in detail here.

[0056] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limiting, and thus other examples of the exemplary embodiments may have different values.

[0057] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A segment limiting device, characterized in that: include: A pipe segment, wherein the pipe segment is provided with a through hole; A grouting bag, the bag opening of which corresponds to the through hole, and the grouting bag is arranged between the pipe segment and the rock wall; A grouting pipe, wherein the output port of the grouting pipe is connected to the bag opening of the grouting bag; A grouting assembly, wherein the grouting assembly is located on the side of the pipe segment away from the grouting bag, the grouting assembly comprises a reversing valve, a first grouting piece and a second grouting piece, the reversing valve comprises a first interface, a second interface and a third interface, the output end of the first grouting piece is connected to the first interface, the output end of the second grouting piece is connected to the second interface, and the third interface is connected to the input port of the grouting pipe.

2. The segment limiting device according to claim 1, characterized in that: There are multiple through holes, there are multiple grouting bags, and one grouting bag corresponds to one through hole.

3. The segment limiting device according to claim 2, characterized in that: A plurality of through holes are arranged around the circumference of the tube sheet.

4. The segment limiting device according to claim 1, characterized in that: At least a portion of the grouting pipe is disposed in the through hole.

5. The segment limiting device according to claim 4, characterized in that: The bag opening of the grouting bag is located at the hole wall of the through hole.

6. The segment limiting device according to claim 1, characterized in that: The grouting bag forms a pear-shaped structure after being filled with grouting material.

7. The segment limiting device according to claim 1, characterized in that: The reversing valve further comprises a fourth interface, and the fourth interface is provided with an air release port.

8. The segment limiting device according to any one of claims 1 to 7, characterized in that: The first grouting part includes a first grouting machine and a first pipeline. The first grouting machine is connected to the input port of the first pipeline, and the output port of the first pipeline is connected to the first interface.

9. The segment limiting device according to any one of claims 1 to 7, characterized in that: The second grouting component includes a second grouting machine and a second pipeline. The second grouting machine is connected to the input port of the second pipeline, and the output port of the second pipeline is connected to the second interface.

10. A tunnel support system, characterized in that: It comprises the segment limiting device as described in any one of claims 1 to 9.

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