Plugging structure for pipe shed grouting and tunnel pipe shed

Abstract

The utility model relates to a plugging structure for pipe shed grouting and a tunnel pipe shed, the plugging structure comprises a grouting sealing pipe, the grouting sealing pipe comprises a sleeve, one end of the sleeve is fixedly connected with a plugging plate for sealing one open end of the sleeve, the plugging plate is provided with a grouting hole and an exhaust hole, and the other end of the sleeve is provided with an internal thread or an external thread; the grouting pipeline extends into the sleeve from the grouting hole and extends in the length direction of the sleeve, the grouting pipeline is connected with the plugging plate in a sealed mode, and a grouting valve is connected to the grouting pipeline; and the exhaust pipeline extends into the sleeve from the exhaust hole and extends in the length direction of the sleeve, the exhaust pipeline is connected with the plugging plate in a sealed mode, and an exhaust valve is connected to the exhaust pipeline. According to the plugging structure for pipe shed grouting, the grouting sealing pipe in threaded connection with the steel floral pipe of the tunnel pipe shed is arranged, the grouting sealing pipe is fixedly connected with the plugging plate for sealing the open end of the sleeve at one end of the sleeve, the plugging structure can be repeatedly used, meanwhile, the field welding workload can be reduced, and the construction procedure is optimized.

Description

Technical Field

[0001] This application relates to the field of tunnel pipe roof technology, and in particular to a sealing structure for pipe roof grouting and a tunnel pipe roof. Background Technology

[0002] Pipe roofs are typically constructed by circumferentially laying steel pipes at specific intervals along part or all of the tunnel excavation section. The ends of the pipes are drilled into perforated sections, and cement grout is injected into the pipes to form a pipe roof support. Pipe roof pre-support is a temporary support method used to ensure safe excavation under special conditions, providing advance support to enhance the bearing capacity of the strata. It is mainly used in weak, gravelly strata, soft rock, boulders, and fractured zones. Grouting inside the steel pipes requires a certain pressure, allowing the grout to diffuse through small holes in the pipes, achieving a connection between the holes through cement grout, thus providing pre-support.

[0003] In conventional pipe roof construction, a guide pipe is first installed, and then a steel perforated pipe is installed inside the guide pipe, with the end of the steel perforated pipe located inside the guide pipe. Traditionally, grouting inside the steel perforated pipe involves welding a sealing plate to the end of the guide pipe, and pressurized grouting is achieved through grouting pipes, venting pipes, and valves installed on the sealing plate.

[0004] However, while existing technology can solve the grouting problem for pipe roofs, it requires welding sealing plates to the ends of each pipe roof guide pipe. This can cause some grouting material inside the pipe to be forced between the guide pipe and the perforated steel pipe. Due to limitations in on-site welding conditions and worker skill levels, the sealing performance of some pipe roofs may not meet requirements, making it difficult to guarantee grouting pressure during the grouting process. To prevent corrosion of the guide pipes, the sealing plates need to be removed later, and the surface sealed with mortar. Summary of the Invention

[0005] This application provides a sealing structure and tunnel pipe roof for pipe roof grouting, to solve the problem in related technologies where the welding of the end of the pipe roof guide pipe is limited by on-site welding conditions and the welding skills of workers, and the sealing performance of some pipe roofs may not meet the requirements, making it difficult to ensure the grouting pressure during the grouting process.

[0006] The first aspect of this application provides a sealing structure for pipe roof grouting, comprising:

[0007] Grouting and sealing pipe, the grouting and sealing pipe includes a sleeve, one end of the sleeve is fixedly connected to a sealing plate that closes one of its open ends, the sealing plate is provided with grouting holes and venting holes, and the other end of the sleeve is provided with internal or external threads;

[0008] The grouting pipe extends into the casing through the grouting hole and extends along the length of the casing. The grouting pipe is sealed to the sealing plate and is equipped with a grouting valve.

[0009] An exhaust pipe extends into the sleeve through the exhaust hole and extends along the length of the sleeve. The exhaust pipe is sealed to the sealing plate and is equipped with an exhaust valve.

[0010] In some embodiments: the length of the grouting pipe extending into the sleeve is greater than the length of the venting pipe extending into the sleeve, the diameter of the grouting pipe is greater than the diameter of the venting pipe, the grouting pipe is a metal pipe, and the venting pipe is a PVC pipe.

[0011] In some embodiments: the sealing plate is a disc-shaped steel plate, the diameter of the sealing plate is slightly smaller than the inner diameter of the sleeve, the sealing plate is located inside the tube hole of the sleeve, and the sealing plate and the sleeve are connected by welding for sealing.

[0012] In some embodiments, the grouting sealing pipe further includes a connector pipe that is threadedly connected to the other end of the casing. Both ends of the connector pipe are provided with internal or external threads, and the diameter of the connector pipe is the same as that of the casing.

[0013] In some embodiments, sealing rings are provided at both ends of the connector tube.

[0014] In some embodiments: both the grouting valve and the venting valve are manual valves, and a quick-connect fitting is connected to the section of the grouting valve away from the grouting pipe, and a quick-connect fitting is connected to the section of the venting valve away from the venting pipe.

[0015] In some embodiments: a pressure gauge is connected to the grouting pipe and / or the venting pipe, the pressure gauge being located outside the casing, and the pressure gauge being a mechanical pointer gauge.

[0016] In some embodiments, a plurality of handles made of bent steel bars are welded to the outer wall of the sleeve.

[0017] A second aspect of this application provides a tunnel pipe roof, comprising:

[0018] A steel conduit, wherein a steel perforated pipe is coaxially connected inside the steel conduit, and a sealing structure for pipe roof grouting as described in any of the above embodiments is connected to the steel perforated pipe.

[0019] In some embodiments, the annular gap between the steel perforated pipe and the steel conduit is filled with sealing mortar, and the sealing mortar is located at one end close to the sealing structure.

[0020] The beneficial effects of the technical solution provided in this application include:

[0021] This application provides a sealing structure for pipe roof grouting and a tunnel pipe roof. The sealing structure for pipe roof grouting includes a grouting sealing pipe, which comprises a sleeve. One end of the sleeve is fixedly connected to a sealing plate that closes one of its open ends. The sealing plate has grouting holes and venting holes. The other end of the sleeve has internal or external threads. A grouting pipe extends into the sleeve through the grouting hole and along the length of the sleeve. The grouting pipe is sealed to the sealing plate and has a grouting valve connected to it. An venting pipe extends into the sleeve through the venting hole and along the length of the sleeve. The venting pipe is sealed to the sealing plate and has an venting valve connected to it.

[0022] Therefore, the sealing structure for pipe roof grouting in this application is equipped with a grouting sealing pipe that is threadedly connected to the steel perforated pipe of the tunnel pipe roof. This grouting sealing pipe has a sealing plate fixedly connected to one end of the casing to seal one of its open ends. The sealing plate has grouting holes and vent holes, and the other end of the casing has internal or external threads. The casing is threadedly connected to the steel perforated pipe of the tunnel pipe roof, allowing the sealing structure to be reused repeatedly. This also reduces on-site welding work, optimizes the construction process, improves the sealing performance of the pipe roof, ensures grouting pressure during grouting, and improves project quality.

[0023] In addition, the casing is equipped with grouting and venting pipes. The grouting pipe extends into the casing from the grouting hole and along the length of the casing. The grouting pipe is sealed to the sealing plate, allowing grout to be delivered into the steel perforated pipe for grouting. A grouting valve is connected to the grouting pipe, which can regulate the grouting flow rate and maintain pressure after grouting. The venting pipe extends into the casing from the venting hole and along the length of the casing. The venting pipe is sealed to the sealing plate, allowing gas to escape from the steel perforated pipe, increasing the grouting pressure. After grouting, the venting valve maintains pressure, allowing the grout to harden in the soil around the steel perforated pipe, improving the safety of tunnel excavation. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the sealing structure installed in a tunnel pipe roof according to an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the sealing structure after it has been disassembled from the tunnel pipe roof according to an embodiment of this application;

[0027] Figure 3 This is a schematic diagram of the sealing plate according to an embodiment of this application.

[0028] Figure label:

[0029] 1. Sleeve; 2. Sealing plate; 3. Grouting pipe; 4. Grouting valve; 5. Venting pipe; 6. Venting valve; 7. Connecting pipe; 8. Grouting hole; 9. Venting hole; 10. Steel perforated pipe; 11. Steel guide pipe; 12. Sealing mortar. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] This application provides a sealing structure and tunnel pipe roof for pipe roof grouting, which can solve the problem in related technologies where the welding of the end of the pipe roof guide pipe is limited by the on-site welding conditions and the welding level of the workers, and the sealing performance of some pipe roofs may not meet the requirements, making it difficult to ensure the grouting pressure during the grouting process.

[0032] See also Figures 1 to 3 As shown, the first aspect of this application provides a sealing structure for pipe roof grouting, comprising:

[0033] The grouting sealing pipe includes a sleeve 1, with a sealing plate 2 fixedly connected to one end of the sleeve 1 to close one of its open ends. The sealing plate 2 has a grouting hole 8 and a vent hole 9. The other end of the sleeve 1 has an internal thread or an external thread. When the other end of the sleeve 1 has an internal thread, it is used to connect with the external thread at one end of the steel flower pipe 10. When the other end of the sleeve 1 has an external thread, it is used to connect with the internal thread at one end of the steel flower pipe 10.

[0034] Grouting pipe 3 extends into sleeve 1 through grouting hole 8 and extends along the length of sleeve 1. Grouting pipe 3 is sealed to sealing plate 2. Grouting valve 4 is connected to grouting pipe 3. Grouting valve 4 is used to connect to the pipeline of external grouting equipment. Grouting valve 4 can adjust the grouting flow rate and maintain pressure after grouting is completed.

[0035] The exhaust pipe 5 extends into the sleeve 1 through the exhaust hole 9 and extends along the length of the sleeve 1. The exhaust pipe 5 is sealed to the sealing plate 2, and an exhaust valve 6 is connected to the exhaust pipe 5. The sealed connection between the exhaust pipe 5 and the sealing plate 2 allows the gas in the steel pipe 10 to be discharged, increasing the grouting pressure. After grouting is completed, the exhaust valve 6 maintains the pressure.

[0036] The sealing structure for pipe roof grouting in this embodiment includes a grouting sealing pipe threadedly connected to the steel perforated pipe 10 of the tunnel pipe roof. A sealing plate 2, which seals one open end of the sealing pipe, is fixedly connected to one end of the sleeve 1. The sealing plate 2 has grouting holes 8 and vent holes 9. The other end of the sleeve 1 has internal or external threads. The sleeve 1 is threadedly connected to the steel perforated pipe 10 of the tunnel pipe roof, allowing the sealing structure to be reused repeatedly. This reduces on-site welding work, optimizes the construction process, improves the sealing performance of the pipe roof, ensures grouting pressure during grouting, and improves project quality.

[0037] In addition, the casing 1 is equipped with a grouting pipe 3 and an exhaust pipe 5. The grouting pipe 3 extends into the casing 1 through the grouting hole 8 and extends along the length of the casing. The grouting pipe 3 is sealed to the sealing plate 2, thereby allowing grout to be delivered into the steel perforated pipe 10 to complete the grouting. A grouting valve 4 is connected to the grouting pipe 3, which can adjust the grouting flow rate and maintain pressure after grouting is completed. The exhaust pipe 5 extends into the casing 1 through the exhaust hole 9 and extends along the length of the casing 1. The exhaust pipe 5 is sealed to the sealing plate 2, allowing gas to be discharged from the steel perforated pipe 10, increasing the grouting pressure. After grouting is completed, the exhaust valve 6 maintains pressure, allowing the grout to harden in the soil around the steel perforated pipe 10, improving the safety of tunnel excavation.

[0038] In some alternative embodiments: see Figures 1 to 3 As shown in the embodiment of this application, a sealing structure for pipe roof grouting is provided. The length of the grouting pipe 3 extending into the sleeve 1 is greater than the length of the exhaust pipe 5 extending into the sleeve 1. The diameter of the grouting pipe 3 is greater than the diameter of the exhaust pipe 5. The grouting pipe 3 is a metal pipe, and the exhaust pipe 5 is a PVC pipe.

[0039] The sealing plate 2 is a disc-shaped steel plate with a diameter slightly smaller than the inner diameter of the sleeve 1. The sealing plate 2 is located inside the pipe hole of the sleeve 1, and the sealing plate 2 and the sleeve 1 are connected by welding to improve the connection strength and sealing performance between the sealing plate 2 and the sleeve 1. Both the sealing plate 2 and the sleeve 1 are made of steel plate material with a thickness of more than 6 mm.

[0040] In some alternative embodiments: see Figures 1 to 3As shown in the figure, this application embodiment provides a sealing structure for pipe roof grouting. The grouting sealing pipe of the sealing structure also includes a connector pipe 7 that is threadedly connected to the other end of the sleeve 1. Both ends of the connector pipe 7 are provided with internal or external threads, and the pipe diameter of the connector pipe 7 is the same as that of the sleeve 1.

[0041] Both ends of the connector tube are equipped with sealing rings, which seal the connector tube 7 between the sleeve 1 and the steel perforated pipe 10, thereby improving the sealing performance of the connection. The connector tube 7 is used for threaded connection between the sleeve 1 and the steel perforated pipe 10. The threads at both ends of the connector tube 7 are threadedly connected to the sleeve 1 and the steel perforated pipe 10 respectively, allowing the sleeve 1 to be connected to steel perforated pipes 10 of different diameters or different thread types.

[0042] In some alternative embodiments: see Figures 1 to 3 As shown in the figure, this application embodiment provides a sealing structure for pipe roof grouting. The grouting valve 4 and the venting valve 6 of the sealing structure are both manual valves. The section of the grouting valve 4 away from the grouting pipe 3 is connected to a quick-connect fitting (not shown in the figure), and the section of the venting valve 6 away from the venting pipe 5 is connected to a quick-connect fitting (not shown in the figure).

[0043] Pressure gauges (not shown in the figure) are connected to the grouting pipe 3 and / or the venting pipe 5. The pressure gauges are located outside the casing 1 and are mechanical pointer gauges used to display the grouting pressure and gas pressure during grouting. Multiple handles made of bent steel bars (not shown in the figure) are welded to the outer wall of the casing 1. These handles are used for manually or with tools such as pry bars to install and remove the casing 1.

[0044] See also Figures 1 to 3 As shown, a second aspect of this application provides a tunnel pipe roof, comprising:

[0045] A steel conduit 11 is provided, and a steel perforated pipe 10 is coaxially connected inside the steel conduit 11. A sealing structure for pipe roof grouting as described in any of the above embodiments is connected to the steel perforated pipe 10. The steel perforated pipe 10 is threadedly connected to the sleeve 1 via internal or external threads. A sealing mortar 12 is filled between the steel perforated pipe 10 and the steel conduit 11. The sealing mortar 12 is located at one end near the sealing structure and is used to direct the injected cement mortar away from the sealing structure.

[0046] Working principle

[0047] This application provides a sealing structure for pipe roof grouting and a tunnel pipe roof. The sealing structure for pipe roof grouting includes a grouting sealing pipe, comprising a sleeve 1, one end of which is fixedly connected to a sealing plate 2 that closes one of its open ends. The sealing plate 2 has a grouting hole 8 and a venting hole 9. The other end of the sleeve 1 has an internal or external thread. A grouting pipe 3 extends into the sleeve 1 through the grouting hole 8 and along the length of the sleeve. The grouting pipe 3 is sealed to the sealing plate 2, and a grouting valve 4 is connected to the grouting pipe 3. A venting pipe 5 extends into the sleeve 1 through the venting hole 9 and along the length of the sleeve 1. The venting pipe 5 is sealed to the sealing plate 2, and a venting valve 6 is connected to the venting pipe 5.

[0048] Therefore, the sealing structure for pipe roof grouting in this application is equipped with a grouting sealing pipe that is threadedly connected to the steel perforated pipe 10 of the tunnel pipe roof. The grouting sealing pipe has a sealing plate 2 fixedly connected to one end of the sleeve 1 to seal one of its open ends. The sealing plate 2 has grouting holes 8 and vent holes 9. The other end of the sleeve 1 has internal or external threads. The sleeve 1 is threadedly connected to the steel perforated pipe 10 of the tunnel pipe roof, allowing the sealing structure to be reused repeatedly. This also reduces on-site welding work, optimizes the construction process, improves the sealing performance of the pipe roof, ensures grouting pressure during grouting, and improves project quality.

[0049] In addition, the casing 1 is equipped with a grouting pipe 3 and an exhaust pipe 5. The grouting pipe 3 extends into the casing 1 through the grouting hole 8 and extends along the length of the casing 1. The grouting pipe 3 is sealed to the sealing plate 2, thereby allowing grout to be delivered into the steel perforated pipe 10 to complete the grouting. A grouting valve 4 is connected to the grouting pipe 3, which can adjust the grouting flow rate and maintain pressure after grouting is completed. The exhaust pipe 5 extends into the casing 1 through the exhaust hole 9 and extends along the length of the casing 1. The exhaust pipe 5 is sealed to the sealing plate 2, allowing gas to be discharged from the steel perforated pipe 10, increasing the grouting pressure. After grouting is completed, the exhaust valve 6 maintains pressure, allowing the grout to harden in the soil around the steel perforated pipe 10, improving the safety of tunnel excavation.

[0050] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0051] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0052] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A sealing structure for pipe roof grouting, characterized in that, include: Grouting and sealing pipe, the grouting and sealing pipe includes a sleeve (1), one end of the sleeve (1) is fixedly connected to a sealing plate (2) that closes one of its open ends, the sealing plate (2) is provided with a grouting hole (8) and an air vent (9), and the other end of the sleeve (1) is provided with an internal thread or an external thread; Grouting pipe (3), the grouting pipe (3) extends into the sleeve (1) through the grouting hole (8) and extends along the length direction of the sleeve (1), the grouting pipe (3) is sealed to the sealing plate (2), and the grouting pipe (3) is connected to a grouting valve (4). An exhaust pipe (5) extends into the sleeve (1) through the exhaust hole (9) and extends along the length of the sleeve (1). The exhaust pipe (5) is sealed to the sealing plate (2). An exhaust valve (6) is connected to the exhaust pipe (5).

2. The sealing structure for pipe roof grouting as described in claim 1, characterized in that: The length of the grouting pipe (3) extending into the sleeve (1) is greater than the length of the exhaust pipe (5) extending into the sleeve (1), the diameter of the grouting pipe (3) is greater than the diameter of the exhaust pipe (5), the grouting pipe (3) is a metal pipe, and the exhaust pipe (5) is a PVC pipe.

3. A sealing structure for pipe roof grouting as described in claim 1, characterized in that: The sealing plate (2) is a disc-shaped steel plate. The diameter of the sealing plate (2) is smaller than the inner diameter of the sleeve (1). The sealing plate (2) is located inside the pipe hole of the sleeve (1). The sealing plate (2) and the sleeve (1) are connected by welding for sealing.

4. A sealing structure for pipe roof grouting as described in claim 1, characterized in that: The grouting sealing pipe also includes a connector pipe (7) that is threadedly connected to the other end of the sleeve (1). Both ends of the connector pipe (7) are provided with internal or external threads, and the diameter of the connector pipe (7) is the same as that of the sleeve (1).

5. A sealing structure for pipe roof grouting as described in claim 4, characterized in that: Both ends of the connector tube (7) are equipped with sealing rings.

6. A sealing structure for pipe roof grouting as described in claim 1, characterized in that: Both the grouting valve (4) and the venting valve (6) are manual valves. A quick-connect fitting is connected to a section of the grouting valve (4) away from the grouting pipe (3), and a quick-connect fitting is connected to a section of the venting valve (6) away from the venting pipe (5).

7. A sealing structure for pipe roof grouting as described in claim 1, characterized in that: A pressure gauge is connected to the grouting pipe (3) and / or the venting pipe (5). The pressure gauge is located outside the casing (1) and is a mechanical pointer gauge.

8. A sealing structure for pipe roof grouting as described in claim 1, characterized in that: The outer wall of the sleeve (1) is welded with a number of handles made of bent steel bars.

9. A tunnel pipe roof, characterized in that, include: A steel conduit (11) is provided, and a steel perforated pipe (10) is coaxially connected inside the steel conduit (11). The steel perforated pipe (10) is connected to a sealing structure for pipe roof grouting as described in any one of claims 1 to 8.

10. A tunnel pipe roof as described in claim 9, characterized in that: The annular gap between the steel flower pipe (10) and the steel conduit (11) is filled with sealing mortar (12), which is located at one end close to the sealing structure.

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