Tunnel secondary lining vault anti-disengaging detection structure and pouring system

Abstract

The invention provides a tunnel secondary lining vault anti-disengaging detection structure and a pouring system, and belongs to the technical field of tunnel secondary lining.The tunnel secondary lining vault anti-disengaging detection structure comprises a trolley, a wall top plate, an arched top plate, a pouring unit, an avoiding groove, a water bag, a water tank and a sealing unit; after the trolley is driven into the position of the secondary lining of the tunnel, the water bag is communicated with the water tank, then the wall head plate is installed on the trolley, an arch-shaped cavity for pouring concrete is formed among the arch-shaped top plate, the tunnel wall and the wall head plate, and then the pouring unit pours the concrete into the arch-shaped cavity through the receding groove. When the arch-shaped cavity is filled with concrete poured by the grouting pipe, water in the water bag is completely pressed into the water tank, when it is detected that the water in the water tank reaches the specified height, grouting is stopped by the pouring unit, the receding groove is closed by the closing unit, and the concrete is waited to be condensed; therefore, the concrete anti-disengaging detection in the tunnel and the pouring work of the concrete in the arched cavity are completed.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel secondary lining, and in particular relates to a tunnel secondary lining arch anti-cavitation detection structure and a casting system. Background Art

[0002] Tunnel construction includes initial support and secondary lining. Secondary lining is the pouring of concrete or reinforced concrete lining after the initial support of tunnel construction. The secondary lining is an arched concrete structure. During construction, steel formwork trolleys are generally used to pour concrete on site.

[0003] The Chinese invention patent with publication number "CN112593978B" discloses "a secondary lining arch anti-emptying device and construction method". In this invention, a secondary lining is arranged below the primary lining, and a lower steel mesh and an upper steel mesh are arranged in the secondary lining. The bottom template is arranged below the secondary lining of the next section and overlapped with the secondary lining of the previous section. The end template is arranged in front of the secondary lining of the next section. A horizontal grouting pipe and a horizontal exhaust pipe are arranged below the primary lining. The horizontal grouting pipe and the horizontal exhaust pipe are perforated with small holes all around and wrapped with filter cloth. 3 to 6 detection tubes are arranged along the central axis of the secondary lining of each section. The top of the detection tube is 1-2 cm lower than the surface of the primary lining. The detection tube is inserted into a positioning sleeve fixed on the upper steel mesh and the lower steel mesh. The detection tube can be used to detect whether the newly poured concrete has been poured to the arch. However, since the top of the detection tube is 1-2 cm lower than the initial lining surface, the invention stops pouring when the slurry overflows from the detection tube, so that the pouring of concrete may be stopped when it is 1-2 cm away from the arch, and the complete filling of the arch cannot be guaranteed.

[0004] The disadvantage is that, during the tunnel construction process, the invention cannot ensure that the tunnel vault is completely filled with concrete during the secondary lining. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a tunnel secondary lining vault anti-emptying detection structure and casting system, which is used to solve the problem in the prior art that it is difficult to judge whether the tunnel vault is completely filled.

[0006] In order to achieve the above-mentioned object and other related objects, the present invention provides a tunnel secondary lining vault anti-emptying detection structure, the structure comprising: Several detection units, each of which includes a water bag and a water tank; The water bag is fixedly installed at the top of the area to be poured for the secondary lining, and the water bags of several detection units are arranged along the axial direction of the tunnel, and the water bags and water tanks are connected; When the secondary lining is poured, the water in the water bag is pressed into the water tank by the poured concrete.

[0007] As an optional solution, the color of the water in the water bag is different from the color of the water in the other water bags.

[0008] As an optional solution, each of the detection units further includes a first connecting tube; One end of the first connecting tube is connected to the water outlet of the water bag, and the other end of the first connecting tube is connected to the water tank.

[0009] As an optional solution, each of the detection units further includes a valve; The valve is fixedly connected to the first connecting pipe, and the valve can open or close the first connecting pipe.

[0010] As an optional solution, the structure further includes an air pump and a plurality of second connecting pipes; One end of the plurality of second connecting pipes is connected to the corresponding air outlet end of the air pump, and the other end of the plurality of second connecting pipes is connected to the corresponding water tank; One end of the first connecting pipe connected to the water tank is located at the lower part of the water tank.

[0011] The present invention also provides a pouring system, the system comprising: A trolley and two headboards, wherein the trolley is fixedly connected with an arched top plate, and the two headboards are mounted on the trolley, and the two headboards are located at two ends of the trolley along the axial direction of the tunnel, and an arched cavity for pouring concrete is formed between the arched top plate, the tunnel wall and the two headboards; The water bag is located in the arched cavity.

[0012] As an optional solution, the system further comprises a plurality of casting units, each of which comprises a grouting bellows, a concrete storage box and a grouting pipe; The concrete storage box is fixedly mounted on the trolley, the liquid inlet end of the grouting bellows is connected to the concrete storage box, the liquid outlet end of the grouting bellows is connected to the liquid inlet end of the grouting pipe, and an avoidance groove is provided through the top of the arched top plate, and the liquid outlet end of the grouting pipe injects concrete into the arched cavity through the avoidance groove; The liquid outlet end of the grouting pipe is located below the corresponding water bag in the arched cavity.

[0013] As an optional solution, the system further comprises a plurality of enclosed units, each of which comprises a first baffle, a first slide rail, a first telescopic power source and two first mounting blocks; The first baffle is located below the avoidance groove, the upper end surface of the first baffle is kept in contact with the lower end surface of the arched top plate, and the first baffle closes the lower end of the avoidance groove; The grouting pipe is fixedly connected to the first baffle plate, and the liquid outlet end of the grouting pipe passes through the upper end surface of the first baffle plate and is flush with the upper end surface of the first baffle plate, and concrete is injected into the arched cavity; The first mounting block is located between the first baffle and the concrete storage box, the two first mounting blocks are respectively located on both sides of the grouting pipe, and the two first mounting blocks are fixedly connected to the first baffle; The first slide rail is installed on the concrete storage box, and the sliding guide direction of the first slide rail is parallel to the axial direction of the tunnel; The first mounting blocks are all slidably mounted on the first slide rail; The extended end of the first telescopic power source is fixedly connected to the first mounting block, the fixed end of the first telescopic power source is fixedly mounted on the trolley, and the telescopic direction of the first telescopic power source is consistent with the axial direction of the tunnel; The grouting pipe moves along the axial direction of the tunnel under the action of the first telescopic power source.

[0014] As an optional solution, each of the enclosed units further includes a rectangular baffle and a second telescopic power source; The fixed end of the second telescopic power source is fixedly connected to the first mounting block, the telescopic direction of the second telescopic power source is vertically upward, a rectangular baffle is fixedly connected to the extended end of the second telescopic power source, the size of the rectangular baffle is the same as the size of the avoidance groove, the first baffle is penetrated through the upper and lower end surfaces to open a rectangular through hole, and the second telescopic power source drives the rectangular baffle to move up and down in the rectangular through hole; When the first baffle moves to the position directly below the avoidance groove under the action of the first telescopic power source, the rectangular baffle extends into the avoidance groove under the action of the second telescopic power source.

[0015] As described above, the tunnel secondary lining vault anti-cavitation pouring device of the present invention has at least the following beneficial effects: 1. The present invention determines quantitatively whether the top of the area to be poured for the secondary lining is poured with concrete by judging how much water in the water bag enters the water tank. When all the water in the water bag is pressed into the water tank, it indicates that the top of the area to be poured for the secondary lining has been filled with concrete, thereby preventing the top of the area to be poured for the secondary lining from being emptied during pouring.

[0016] 2. During grouting, the present invention adjusts the grouting pipe below the corresponding water bag. When it is detected that less water is pressed back into a water tank by the water bag, the speed of pumping concrete into the corresponding grouting pipe is immediately increased, so that every place on the top of the tunnel is filled with concrete.

[0017] 3. After the concrete pouring is completed, the rectangular baffle pushes the concrete in the avoidance groove into the arched cavity under the push of the second telescopic power source, so that when the trolley drives away to pour the next place, there will be no concrete in the avoidance groove that solidifies together with the concrete in the arched cavity. The structural design is ingenious. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 Shown is a schematic structural diagram of the water bag and the first connecting pipe of the present invention; Figure 3 Shown as the present invention Figure 2 A partial enlarged view of point A in the middle.

[0019] Figure 4 Shown is a schematic diagram of the structure inside the trolley of the present invention; Figure 5 Shown is a partial cross-sectional view of the interior of the water tank of the present invention; Figure 6 Shown is a partial cross-sectional view related to the arched cavity of the present invention; Figure 7 Shown is a schematic structural diagram related to the closed unit of the present invention; Figure 8 Shown is a schematic structural diagram related to the rectangular through hole of the present invention.

[0020] In the figure: 101, trolley; 102, wall head plate; 103, arched top plate; 104, arched cavity; 105, avoidance groove; 201, grouting pipe; 202, grouting bellows; 203, concrete storage box; 204, pump body; 301, water bag; 302, water tank; 303, first connecting pipe; 304, connector; 305, valve; 401, air pump; 402, second connecting pipe; 501, first baffle; 502, first slide rail; 503, first telescopic power source; 504, first mounting block; 505, rectangular baffle; 506, second telescopic power source; 507, rectangular through hole; 508, second slide rail. DETAILED DESCRIPTION

[0021] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0022] See also Figures 1 to 8. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0023] The following embodiments are only for illustration purposes and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0024] See also Figure 1 and Figure 5 The present invention provides a tunnel secondary lining vault anti-emptying detection structure, the structure comprising: Several detection units, each of which includes a water bag 301 and a water tank 302; The water tank 302 is not limited here. Its function is to observe the amount of water pressed into the water bag 301. The water tank 302 can be fully transparent or partially transparent, or the amount of water in the water tank 302 can be detected by a detection device such as a water level detector. The water bag 301 is fixedly installed at the top of the area to be poured for the secondary lining, and the water bags 301 of several detection units are arranged along the axial direction of the tunnel, and the water bags 301 and the water tank 302 are connected; Here, the water bag 301 is not fixedly installed on the top of the area to be poured for the secondary lining, but can be fixed by Velcro or by limit pins; During the secondary lining pouring, the water in the water bag 301 is pressed into the water tank 302 by the poured concrete.

[0025] In this embodiment, when the secondary lining is poured in the tunnel, the water in the water bag 301 will be pressed into the water tank 302. When the concrete of the secondary lining is filled to the top of the area to be poured, all the water in the water bag 301 is pressed into the water tank 302. At this time, the grouting is stopped after the water in the water tank 302 reaches a specified height, thereby completing the concrete anti-emptying detection work in the tunnel through the water bag 301. The present invention can quantitatively determine whether the top of the area to be poured is poured with concrete by judging how much water in the water bag 301 enters the water tank 302, thereby preventing the top of the area to be poured from being empty during pouring.

[0026] See also Figure 1 , the color of the water in the water bag 301 is different from the color of the water in the other water bags 301.

[0027] In this embodiment, when the water in the water bag 301 is pressed into the corresponding water tank 302, the colors of the water pressed into different water tanks 302 are different. The present invention can more intuitively reflect the amount of water pressed into each water tank 302 by observing the water bags 301 at different positions on the top of the pouring area corresponding to the water of different colors pressed into the water tank 302.

[0028] See also Figures 2 to 5 , each of the detection units also includes a first connecting pipe 303; One end of the first connecting tube 303 is connected to the water outlet of the water bag 301, and the other end of the first connecting tube 303 is connected to the water tank 302; The first connecting pipe 303 is provided with a connector 304, and the connector 304 can connect or disconnect the water bag 301 and the water tank 302; The first connecting pipe 303 is divided into a first section and a second section, the connecting head 304 is two flanges, the two flanges are respectively a first flange and a second flange, one end of the first section is communicated with the water bag 301, the other end of the first section is fixedly connected to the first flange, one end of the second section is communicated with the water tank 302, the other end of the second section is fixedly connected to the second flange, the first flange and the second flange are connected by bolts, so as to connect the first section and the second section; The connector 304 may also be a hard cannula, one end of which is inserted into the first section, and the other end of which is inserted into the second section, thereby connecting the first section and the second section, and further connecting the water bag 301 and the water tank 302.

[0029] In this embodiment, when the secondary lining is poured in the tunnel, the water bag 301 and the water tank 302 are connected through the connector 304, and the water in the water bag 301 flows into the water tank 302 through the first connecting pipe 303; After the secondary lining pouring in the tunnel is completed, the connector 304 is disconnected, so that the water bag 301 and the water tank 302 are disconnected.

[0030] The first connecting pipe 303 of the present invention is a detachable connection, so as to facilitate the rapid connection and disconnection of the water bag 301 and the water tank 302.

[0031] See also Figure 2 , each of the detection units also includes a valve 305; The valve 305 is located between the water tank 302 and the connector 304; The valve 305 is fixedly connected to the first connecting pipe 303 , and the valve 305 can open or close the first connecting pipe 303 .

[0032] In this embodiment, when the secondary lining is poured in the tunnel, the water bag 301 and the box body are connected through the connector 304, and then the valve 305 is opened to open the first connecting pipe 303. At this time, when the secondary lining is poured, the water in the water bag 301 can enter the water tank 302 through the first connecting pipe 303; After the secondary lining pouring in the tunnel is completed, the valve 305 is closed first, and then the connector 304 is disconnected to separate the water tank 302 and the water bag 301.

[0033] The present invention can control, through the valve 305, that the water in the water tank 302 will not flow out through the first connecting pipe 303 when the connector 304 is disconnected after the secondary lining is poured, and the structural design is ingenious.

[0034] See also Figure 4 and Figure 5 , the structure also includes an air pump 401 and a plurality of second connecting pipes 402; One end of the plurality of second connecting pipes 402 is connected to the corresponding air outlet end of the air pump 401, and the other end of the plurality of second connecting pipes 402 is connected to the corresponding water tank 302; One end of the first connecting pipe 303 communicating with the water tank 302 is located at the lower part of the water tank 302 .

[0035] In this embodiment, before the secondary lining is poured in the tunnel, each water tank 302 is filled with water, and each water bag 301 has no water. The valve 305 is closed first, and after the first connecting pipe 303 connects the water tank 302 and the water bag 301 through the connector 304, the valve 305 is opened, and the air pump 401 is started. The air pump 401 presses the water in each water tank 302 into the corresponding first connecting pipe 303 and then into each water bag 301. The valve 305 and the air pump 401 are closed, and the subsequent operation is waited. In the present invention, the valve 305 is closed before the connector 304 is connected, so that the water in the water tank 302 will not flow out through the first connecting pipe 303, and after the connector 304 is connected, the water in the water tank 302 can be pressed into the water bag 301 through the air pump 401, and the structural design is ingenious.

[0036] See also Figure 1 , Figure 5 and Figure 6 The present invention also provides a casting system, the system comprising: A trolley 101 and two headboards 102, wherein an arched top plate 103 is fixedly connected to the trolley 101, and the two headboards 102 are both mounted on the trolley 101, and the two headboards 102 are located at both ends of the trolley 101 along the axial direction of the tunnel, and an arched cavity 104 for pouring concrete is formed between the arched top plate 103, the tunnel wall and the two headboards 102; The water bag 301 is located in the arched cavity 104; The first connecting pipe 303 extends out of the arched cavity 104 and communicates with the water tank 302 .

[0037] In this embodiment, after the trolley 101 enters the designated position in the tunnel, the water bag 301 and the water tank 302 are first connected, and then the headboard 102 is installed on the trolley 101, so that an arched cavity 104 for pouring concrete is formed between the arched top plate 103, the tunnel wall and the two headboards 102, and then concrete is poured in the rectangular cavity. During the process of the concrete poured in the arched cavity 104 gradually moving upward, the water in the water bag 301 is pressed into the water tank 302. When the poured concrete fills the arched cavity 104, all the water in the water bag 301 is pressed into the water tank 302, and the grouting is stopped at this time, thereby completing the anti-emptying pouring of concrete in the tunnel. The present invention can quantitatively determine whether the top of the tunnel is poured with concrete by judging how much water in the water bag 301 enters the water tank 302, thereby preventing the top of the tunnel from being emptied during pouring.

[0038] See also Figure 1 , Figure 5 , Figure 6 and Figure 7 , the casting units all include a grouting bellows 202, a concrete storage box 203 and a grouting pipe 201; The concrete storage box 203 is fixedly installed on the trolley 101, and the concrete storage box 203 is filled with mixed concrete. The pump body 204 is fixedly installed in the concrete storage box 203, and the inlet end of the pump body 204 extends into the concrete. The outlet end of the pump body 204 is connected with the liquid inlet end of the grouting bellows 202, and the liquid outlet end of the grouting bellows 202 is connected with the liquid inlet end of the grouting pipe 201. The top of the arched top plate 103 is penetrated by an avoidance groove 105, and the liquid outlet end of the grouting pipe 201 injects concrete into the arched cavity 104 through the avoidance groove 105; The liquid outlet end of the grouting pipe 201 is located below the corresponding water bag 301 in the arched cavity 104 .

[0039] In this embodiment, when concrete needs to be injected into the arched cavity 104, the pump body 204 extracts concrete from the concrete storage box 203 and sequentially passes through the grouting bellows 202 and the grouting pipe 201 and then enters the arched cavity 104. When the present invention injects concrete into the arched cavity 104, the concrete can be extracted only through the pump body 204, and the structural design is ingenious.

[0040] See also Figure 1 , Figure 4 and Figure 6 , the system further comprises a closed unit, each of which comprises a first baffle 501, a first slide rail 502, a first telescopic power source 503 and two first mounting blocks 504; The first telescopic power source 503 is not limited here. Its function is to provide telescopic power, and it can be a cylinder, a hydraulic cylinder, an electric telescopic rod, etc.; The first baffle plate 501 is located below the avoidance groove 105, and the upper end surface of the first baffle plate 501 is kept in contact with the lower end surface of the arched top plate 103, and the first baffle plate 501 closes the lower end of the avoidance groove 105; The grouting pipe 201 is fixedly connected to the first baffle 501. The liquid outlet end of the grouting pipe 201 passes through the upper end surface of the first baffle 501 and is flush with the upper end surface of the first baffle 501, and concrete is injected into the arched cavity 104. The first mounting block 504 is located between the first baffle 501 and the concrete storage box 203. The two first mounting blocks 504 are respectively located on both sides of the grouting pipe 201. The two first mounting blocks 504 are both fixed to the first baffle 501. The first slide rail 502 is installed on the concrete storage box 203, and the sliding guide direction of the first slide rail 502 is parallel to the axial direction of the tunnel; The first mounting blocks 504 are all slidably mounted on the first slide rails 502; A second slide rail 508 is installed on the lower end surface of the arched top plate 103, and the sliding guide direction of the second slide rail 508 is parallel to the axial direction of the tunnel; The first baffle 501 is slidably mounted on the second slide rail 508; The extended end of the first telescopic power source 503 is fixedly connected to the first mounting block 504, and the fixed end of the first telescopic power source 503 is fixedly mounted on the trolley 101. The telescopic direction of the first telescopic power source 503 is consistent with the axial direction of the tunnel; The grouting pipe 201 moves along the axial direction of the tunnel under the action of the first telescopic power source 503 .

[0041] In this embodiment, since some positions of the arch in the tunnel are concave, some water bags 301 will be installed in the concave positions, so that the positions of adjacent water bags 301 will be slightly deviated. Therefore, after the trolley 101 enters the designated position in the tunnel, the grouting pipe 201 corresponding to the water bag 301 needs to be adjusted to the bottom of the water bag 301. Specifically, the first mounting block 504 is pushed to move by the first telescopic power source 503, and the first mounting block 504 drives the grouting pipe 201 to move to the bottom of the corresponding water bag 301 in the avoidance groove 105, and then the subsequent grouting operation is performed. During grouting, the present invention adjusts the grouting pipe 201 to the bottom of the corresponding water bag 301. When it is detected that there is less water in a water tank 302 pressed back by the water bag 301, the speed of pumping concrete into the corresponding grouting pipe 201 is immediately accelerated, so that every place at the top of the tunnel is filled with concrete.

[0042] See also Figures 6 to 8 , each of the enclosed units further comprises a rectangular baffle 505 and a second telescopic power source 506; The second telescopic power source 506 is not limited here, and its function is to provide telescopic power, and can be a cylinder, a hydraulic cylinder, an electric telescopic rod, etc.; The fixed end of the second telescopic power source 506 is fixedly connected to the first mounting block 504. The extension direction of the second telescopic power source 506 is vertically upward. A rectangular baffle 505 is fixedly connected to the extension end of the second telescopic power source 506. The size of the rectangular baffle 505 is the same as the size of the avoidance groove 105. The first baffle 501 is penetrated through the upper and lower end surfaces to open a rectangular through hole 507. The second telescopic power source 506 drives the rectangular baffle 505 to move up and down in the rectangular through hole 507. When the first baffle 501 moves to the position directly below the avoidance groove 105 under the action of the first telescopic power source 503 , the rectangular baffle 505 extends into the avoidance groove 105 under the action of the second telescopic power source 506 .

[0043] In this embodiment, after the grouting of the grouting pipe 201 is completed, the first baffle 501 moves to the right below the avoidance groove 105 under the action of the first telescopic power source 503, and then the rectangular baffle 505 extends into the avoidance groove 105 under the action of the second telescopic power source 506, and stops after the upper end surface of the rectangular baffle 505 is flush with the upper end of the avoidance groove 105, thereby completing the concrete pouring work. After the concrete pouring is completed, the present invention can push the concrete in the avoidance groove 105 into the arched cavity 104 through the rectangular baffle 505, so that when the trolley 101 drives away, there will be no concrete in the avoidance groove 105 that solidifies together with the arched cavity 104, and the structural design is ingenious.

[0044] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A tunnel secondary lining vault anti-emptying detection structure, characterized in that: The structure comprises: Several detection units, each of which includes a water bag and a water tank; The water bag is fixedly installed at the top of the area to be poured for the secondary lining, and the water bags of several detection units are arranged along the axial direction of the tunnel, and the water bags and water tanks are connected; When the secondary lining is poured, the water in the water bag is pressed into the water tank by the poured concrete.

2. A tunnel secondary lining vault anti-emptying detection structure according to claim 1, characterized in that: The color of the water in the water bag is different from the color of the water in the other water bags.

3. The tunnel secondary lining vault anti-emptying detection structure according to claim 1 is characterized in that: Each of the detection units also includes a first connecting pipe; One end of the first connecting tube is connected to the water outlet of the water bag, and the other end of the first connecting tube is connected to the water tank.

4. The tunnel secondary lining vault anti-emptying detection structure according to claim 3 is characterized in that: Each of the detection units also includes a valve; The valve is fixedly connected to the first connecting pipe, and the valve can open or close the first connecting pipe.

5. The tunnel secondary lining vault anti-emptying detection structure according to claim 3 is characterized in that: The structure also includes an air pump and a plurality of second connecting pipes; One end of the plurality of second connecting pipes is connected to the corresponding air outlet end of the air pump, and the other end of the plurality of second connecting pipes is connected to the corresponding water tank; One end of the first connecting pipe connected to the water tank is located at the lower part of the water tank.

6. A pouring system, comprising a tunnel secondary lining vault anti-cavitation detection structure as claimed in any one of claims 1 to 5, characterized in that: The system comprises: A trolley and two headboards, wherein the trolley is fixedly connected with an arched top plate, and the two headboards are mounted on the trolley, and the two headboards are located at two ends of the trolley along the axial direction of the tunnel, and an arched cavity for pouring concrete is formed between the arched top plate, the tunnel wall and the two headboards; The water bag is located in the arched cavity.

7. A pouring system according to claim 6, characterized in that: The system also includes a plurality of pouring units, each of which includes a grouting corrugated pipe, a concrete storage box and a grouting pipe; The concrete storage box is fixedly mounted on the trolley, the liquid inlet end of the grouting bellows is connected to the concrete storage box, the liquid outlet end of the grouting bellows is connected to the liquid inlet end of the grouting pipe, and an avoidance groove is provided through the top of the arched top plate, and the liquid outlet end of the grouting pipe injects concrete into the arched cavity through the avoidance groove; The liquid outlet end of the grouting pipe is located below the corresponding water bag in the arched cavity.

8. A pouring system according to claim 7, characterized in that: The system further comprises a plurality of enclosed units, each of which comprises a first baffle, a first slide rail, a first telescopic power source and two first mounting blocks; The first baffle is located below the avoidance groove, the upper end surface of the first baffle is kept in contact with the lower end surface of the arched top plate, and the first baffle closes the lower end of the avoidance groove; The grouting pipe is fixedly connected to the first baffle plate, and the liquid outlet end of the grouting pipe passes through the upper end surface of the first baffle plate and is flush with the upper end surface of the first baffle plate, and concrete is injected into the arched cavity; The first mounting block is located between the first baffle and the concrete storage box, the two first mounting blocks are respectively located on both sides of the grouting pipe, and the two first mounting blocks are fixedly connected to the first baffle; The first slide rail is installed on the concrete storage box, and the sliding guide direction of the first slide rail is parallel to the axial direction of the tunnel; The first mounting blocks are all slidably mounted on the first slide rail; The extended end of the first telescopic power source is fixedly connected to the first mounting block, the fixed end of the first telescopic power source is fixedly mounted on the trolley, and the telescopic direction of the first telescopic power source is consistent with the axial direction of the tunnel; The grouting pipe moves along the axial direction of the tunnel under the action of the first telescopic power source.

9. A pouring system according to claim 8, characterized in that: Each of the enclosed units also includes a rectangular baffle and a second telescopic power source; The fixed end of the second telescopic power source is fixedly connected to the first mounting block, the telescopic direction of the second telescopic power source is vertically upward, a rectangular baffle is fixedly connected to the extended end of the second telescopic power source, the size of the rectangular baffle is the same as the size of the avoidance groove, the first baffle is penetrated through the upper and lower end surfaces to open a rectangular through hole, and the second telescopic power source drives the rectangular baffle to move up and down in the rectangular through hole; When the first baffle moves to the position directly below the avoidance groove under the action of the first telescopic power source, the rectangular baffle extends into the avoidance groove under the action of the second telescopic power source.

Images