Pipe jacking section structure for coal roadway and jacking pipe
By designing a carbon steel pipe jacking section structure for coal roadways and adopting a design of connecting units and avoidance grooves, the problems of pipe jacking cracking and coal accumulation in high-pressure and multi-groundwater environments were solved, achieving efficient and low-cost construction results.
Patent Information
- Application Number
- CN202511005566.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-22
- Publication Date
- 2025-11-21
AI Technical Summary
Existing coal roadway pipe jacking is prone to rupture and severe coal accumulation in high-pressure and groundwater environments, affecting construction progress and costs.
A pipe jacking structure for coal roadways is designed, using carbon steel. The pipe section structure is equipped with connecting units, including connecting plates and flange plates. Efficient connection and sealing are achieved through clearance grooves and connecting components to avoid coal and rock accumulation. Adhesive is used to fill the clearance space to enhance sealing performance.
It improves the connection efficiency and sealing performance of pipe jacking, reduces the impact of coal and rock accumulation, reduces construction costs, and ensures smooth construction in high-pressure and multi-groundwater environments.
Smart Images
Figure CN120990642A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of coal roadway construction, and particularly relates to a pipe joint structure of a pipe jacking pipe for a coal roadway and the pipe jacking pipe. BACKGROUND
[0002] At present, concrete pipes are mostly used in the pipe jacking construction of underground coal roadways. However, for some harsh underground conditions, such as high-pressure ground and environments with a large amount of underground water, the concrete pipe joints are prone to breakage and the pipes are prone to water filling, which seriously affects the normal construction of the coal roadway pipe jacking. The existing municipal steel structure pipe jacking pipe also has a serious problem of coal accumulation, which seriously affects the advancing speed of the pipe jacking pipe. SUMMARY
[0003] Therefore, the present application provides a pipe joint structure of a pipe jacking pipe for a coal roadway and the pipe jacking pipe, so as to solve or at least alleviate one or more of the above problems and other problems in the prior art.
[0004] To achieve the above purpose, the first technical solution adopted by the present application is as follows: A pipe joint structure of a pipe jacking pipe for a coal roadway, comprising a pipe body and a connecting unit arranged at both ends of the pipe body; Each of the connecting units comprises a connecting plate connected to the inner wall of the pipe body at one end and a flange plate connected to the other end of the connecting plate; The pipe body is integrally formed with a pipe body extension at each end along the axial direction of the pipe body, and the end face of each pipe body extension is in contact with or connected to the side face of the flange plate at the corresponding end; Each of the pipe body extensions is provided with a plurality of avoidance grooves at intervals along the circumferential direction of the pipe body, and the groove opening of each of the avoidance grooves is arranged to face the flange plate, so that avoidance spaces are respectively formed between the connecting plate, the flange plate and each of the avoidance grooves; When two adjacent pipe joint structures are connected, the adjacent flange plates of the two adjacent pipe joint structures are connected through a connecting assembly, and the connecting assembly is accommodated in the adjacent avoidance spaces of the two adjacent pipe joint structures.
[0005] In the pipe joint structure of the pipe jacking pipe for the coal roadway described above, optionally, a sealing plate is arranged between the groove wall of each of the avoidance grooves and the connecting plate, so that a closed cavity is formed between the flange plate, the pipe body extension, the connecting plate and the sealing plate.
[0006] In the pipe joint structure of the pipe jacking pipe for the coal roadway described above, optionally, in the radial direction of the pipe body, the outer side face of the flange plate is lower than the outer side face of the pipe body extension, or the outer side face of the flange plate is flush with the outer side face of the pipe body extension.
[0007] In the pipe section structure for coal roadway pipe jacking as described in the preceding description, optionally, the height of the outer side of the flange plate is flush with the outer side of the pipe body extension.
[0008] In the pipe section structure for coal roadway pipe jacking as described in the preceding description, optionally, the connecting plate comprises a connecting plate part extending in the radial direction of the pipe body and connected to the inner wall of the pipe body at one end, and a connecting plate part two connected to the other end of the connecting plate part one, the connecting plate part two extending in the axial direction of the pipe body, the flange plate being connected to the other end of the connecting plate part two, and the connecting plate part two, the flange plate and each of the avoidance slots forming each of the avoidance spaces.
[0009] In the pipe section structure for coal roadway pipe jacking as described in the preceding description, optionally, the pipe section structure is used for a spiral pipe jacking machine, the spiral pipe jacking machine having a screw rod, the screw rod being located in the pipe during the pipe jacking construction process, and the connecting plate part two of each of the pipe section structures being used to support the screw rod.
[0010] In the pipe section structure for coal roadway pipe jacking as described in the preceding description, optionally, each of the pipe body extensions is provided with six or more avoidance slots.
[0011] In the pipe section structure for coal roadway pipe jacking as described in the preceding description, optionally, the plurality of avoidance slots on each of the pipe body extensions are uniformly distributed in the circumferential direction of the pipe body.
[0012] In the pipe section structure for coal roadway pipe jacking as described in the preceding description, optionally, the connecting assembly comprises a bolt for passing through the two adjacent flange plates and a nut cooperating with the bolt.
[0013] Optionally, the wall thickness of the pipe body is 10±1mm.
[0014] Optionally, the thickness of the connecting plate is 10±1mm.
[0015] Optionally, the materials of the pipe body, the connecting plate and the flange plate are steel, and further, the materials of the pipe body, the connecting plate and the flange plate are carbon steel.
[0016] Optionally, the inner wall of the connecting plate is coated with a fireproof and wear-resistant coating.
[0017] The second technical solution adopted by the present application is a pipe for coal roadway pipe jacking, which comprises a plurality of the pipe section structures for coal roadway pipe jacking as described above, the plurality of pipe section structures being connected in sequence, and the two adjacent pipe section structures being connected through the connecting assembly.
[0018] In the pipe for coal roadway pipe jacking as described in the preceding description, optionally, the pipe further comprises an adhesive filled in each of the avoidance spaces, the adhesive comprising one or a combination of several of structural adhesive and glass adhesive.
[0019] In the pipe jacking for the coal roadway as described above, optionally, a sealing gasket is arranged between the two adjacent flange plates of the two adjacent pipe joint structures.
[0020] By means of the above technical scheme, the present application has the following advantages compared with the prior art: The special connection unit in the pipe joint structure of the present application has high connection efficiency and tight sealing between the adjacent pipe joint structures, and the coal and rock accumulation at the connection of the adjacent pipe joint structures and the nearby area is greatly reduced, which can effectively reduce the problem of coal accumulation affecting the advancing speed, and the construction cost is low. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.
[0022] Figure 1 The structure schematic diagram of the pipe jacking for the coal roadway of an embodiment of the present application (only two pipe joint structures are connected) is shown in the figure; Figure 2 The enlarged schematic diagram of A in the pipe jacking for the coal roadway of an embodiment of the present application is shown in the figure; Figure 1 Figure 3 The three-dimensional structure partial schematic diagram of the pipe jacking for the coal roadway of an embodiment of the present application is shown in the figure; Figure 4 The three-dimensional structure schematic diagram of the connection of the two pipe joint structures of the pipe jacking for the coal roadway of an embodiment of the present application is shown in the figure; Reference signs: 1, pipe body; 2, connecting plate; 21, one part of the connecting plate; 22, the other part of the connecting plate; 3, flange plate; 4, closed cavity; 5, avoiding space; 6, bolt; 7, nut; 8, pipe body extension. DETAILED DESCRIPTION
[0023] In order to make the personnel in the art better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments in the embodiments of the present application should belong to the scope of protection of the embodiments of the present application.
[0024] Figure 1 The longitudinal full section structure schematic diagram of the roof pipe for coal roadway according to an embodiment of the present application is shown in the figure, and it can be seen from the figure that the roof pipe comprises a plurality of pipe joint structures, the plurality of pipe joint structures are connected in sequence, and two adjacent pipe joint structures are connected through a connecting assembly, the connecting assembly can be a bolt and nut combination, and two pipe joint structures are connected in the figure. The structure of each pipe joint structure is the same, and one of the pipe joint structures will be described below.
[0025] Referring to Figure 1 and Figure 2 , wherein Figure 2 is Figure 1 the enlarged schematic view of A in FIG.
[0026] The pipe joint structure comprises a pipe body 1 and a connecting unit arranged at both ends of the pipe body 1, and the material of the pipe body 1 can be steel, such as high-strength carbon steel, which has good strength and stiffness and can withstand large pressure; the material of the connecting unit (such as a connecting plate and a flange plate) can also be steel, such as carbon steel. Alternatively, in other embodiments, the pipe body, the connecting unit, and the like can also use other steel materials.
[0027] Referring to Figure 2 , each connecting unit comprises a connecting plate 2 connected to the inner wall of the pipe body 1 at one end and a flange plate 3 connected to the other end of the connecting plate 2.
[0028] The pipe body 1 is integrally formed with a pipe body extension 8 at each end along the axial direction of the pipe body 1, and the end face of each pipe body extension 8 is connected to the side face of the corresponding end flange plate 3, so as to avoid the accumulation of coal and rock in the connecting part of two adjacent pipe joint structures and the surrounding area during the advancing of the roof pipe. If there is coal and rock accumulation at the connecting part, it will greatly increase the advancing resistance of the roof pipe, and even hinder the advancing of the roof pipe.
[0029] The pipe body extension 8 and the flange plate 3 can be connected together by welding, gluing or other means, and in other embodiments, the end face of each pipe body extension 8 can also be in contact with the side face of the corresponding end flange plate 3.
[0030] Each pipe body extension 8 is provided with a plurality of avoidance grooves along the circumferential direction of the pipe body 1, and each avoidance groove is opened towards the flange plate 3, so that the avoidance space 5 is formed between the connecting plate 2, the flange plate 3 and each avoidance groove.
[0031] Referring to Figure 3 and Figure 4When the two adjacent pipe joint structures are connected, the adjacent flange plates 3 of the two adjacent pipe joint structures are connected through the connecting assembly, and the connecting assembly is accommodated in the adjacent avoiding space 5 of the two adjacent pipe joint structures. On the one hand, the connecting assembly is convenient for connecting the adjacent flange plates 3 together, and on the other hand, the connecting assembly is accommodated in the avoiding space 5 to avoid that the connecting assembly hinders the pushing of the pipe jacking.
[0032] The sealing plate is arranged between the groove wall of each avoiding groove and the connecting plate 2, so that a closed cavity 4 is formed between the flange plate 3, the pipe body extension 8, the connecting plate 2 and the sealing plate. The closed cavity 4 is an annular cavity, which further avoids that the coal rock enters the space between the pipe body extension and the connecting plate 2 and further avoids that the coal rock accumulates at the connection of the two adjacent pipe joint structures and the surrounding area, thereby affecting the pushing of the pipe jacking.
[0033] In other embodiments, the side of the flange plate 3 facing the pipe body 1 can also be in contact with the end surface of the pipe body 1.
[0034] In the radial direction of the pipe body 1, the outer side of the flange plate 3 is flush with the outer side of the pipe body extension 8, and the outer side of the pipe body extension 8 is coplanar with the outer side of the pipe body 1, so that when the plurality of pipe joint structures are connected, the outer side of the entire pipe jacking is substantially flush, further avoiding the accumulation of coal rock and affecting the pushing of the pipe jacking.
[0035] In some embodiments of the present application, each pipe body extension 8 is provided with more than 6 avoiding grooves, and the avoiding grooves can be uniformly distributed along the circumferential direction of the pipe body 1 to ensure that the stress is uniform during the pushing of the pipe jacking. Each pipe body extension 8 is provided with, for example, 6, 8, 10 or more avoiding grooves. In this example, each pipe body extension 8 is provided with 8 avoiding grooves.
[0036] In some embodiments of the present application, the wall thicknesses of the pipe body 1 and the pipe body extension 8 are both 10±1mm, and the thickness of the connecting plate 3 is 10±1mm, to ensure the strength and rigidity.
[0037] In some embodiments of the present application, the connecting assembly includes a bolt 6 for penetrating through the two adjacent flange plates 3 and a nut 7 matched with the bolt 6. For example, the bolt 6 can be an M24 bolt, which can minimize the size of the wrench opening space and effectively reduce the problem of coal rock accumulation affecting the pushing speed.
[0038] In some embodiments of the present application, when two adjacent pipe joint structures are connected by the connecting assembly, the gap 5 is also filled with an adhesive, which can be a structural adhesive or a glass adhesive on the market, to further prevent coal accumulation. A sealing gasket is arranged between the two adjacent flange plates 3 of the two adjacent pipe joint structures to improve the sealing between the two adjacent pipe joint structures. The sealing gasket can be made of metal or rubber.
[0039] As can be seen from Figure 2 The connecting plate 2 includes a first connecting plate part 21 extending in the radial direction of the pipe body 1 and connected to the inner wall of the pipe body 1 at one end, and a second connecting plate part 22 connected to the other end of the first connecting plate part 21. The first connecting plate part 21 is an annular plate connected to the outer side of the pipe body 1, and the inner side of the annular plate is connected to the second connecting plate part 22. The second connecting plate part 22 extends in the axial direction of the pipe body 1, and the flange plate 3 is connected to the other end of the second connecting plate part 22. The second connecting plate part 22, the flange plate 3, and the gap between them form the gap 5.
[0040] The pipe joint structure can be applied to the pipe jacking construction of a spiral pipe jacking machine. The spiral pipe jacking machine has a screw rod, and all the screw rods and the pipe form a screw rod conveying mechanism for conveying soil. During the pipe jacking construction, the screw rod is located in the pipe, and the second connecting plate part 22 of each pipe joint structure is used to support the screw rod. During the construction process, if the screw rod is too long, the screw rod is prone to sagging, which affects the driving of the screw rod. The pipe jacking machine according to the present application can support the screw rod at intervals during the construction process, thereby preventing the screw rod from sagging and ensuring that the screw rod remains horizontal during the entire construction process.
[0041] In some embodiments of the present application, the inner wall of the pipe body 1 and the inner wall of the connecting plate 2 of each pipe joint structure are coated with a fireproof and wear-resistant coating, and the inner wall of the second connecting plate part 22 is particularly coated with a fireproof and wear-resistant coating. The fireproof and wear-resistant coating can be a polyurethane coating to prevent sparks from being generated when the screw rod of the screw conveying mechanism contacts the connecting plate 2.
[0042] The pipe jacking machine for coal roadway according to the present application has the following advantages: 1) The special connecting unit in the pipe joint structure has a high connection efficiency and a tight seal, and the coal accumulation at the connection between adjacent pipe joint structures and the surrounding area is greatly reduced, which can effectively reduce the problem of coal accumulation affecting the jacking speed and reduce the construction cost.
[0043] 2) Compared with the concrete pipe, the pipe joint structure of the embodiment adopts carbon steel material, has good strength and rigidity, can bear large ground pressure, and in combination with the special connection unit structure design of the pipe joint structure, is tightly sealed, and even in the environment of high ground pressure and much groundwater, is not prone to cause pipe joint rupture and pipe internal water filling and the like.
[0044] It should be further noted that in the description of the present application, the meaning of "a plurality of" or "multiple" is at least two, for example, two, three or more, unless otherwise explicitly specified.
[0045] In addition, in the description of the present application, unless otherwise specified and limited, it should be noted that the terms "mounting", "connecting" and "connecting" should be understood broadly, for example, can be mechanical connection or electrical connection, can be the communication between the two elements, can be directly connected, or indirectly connected through an intermediate medium, and for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0046] The above embodiments are only used to illustrate the embodiments of the present application, and are not intended to limit the embodiments of the present application. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the embodiments of the present application. Therefore, all equivalent technical solutions belong to the scope of the embodiments of the present application, and the patent protection scope of the embodiments of the present application should be defined by the claims.
Claims
1. A jacking pipe section structure for a coal roadway, characterized by, The pipe joint structure comprises a pipe body and a connecting unit arranged at both ends of the pipe body; Each connecting unit comprises a connecting plate connected to the inner wall of the pipe body at one end and a flange plate connected to the other end of the connecting plate; The pipe body is integrally formed with a pipe body extension at each end along the axial direction of the pipe body, and the end face of each pipe body extension is in contact with or connected to the side face of the flange plate at the corresponding end; Each pipe body extension is provided with a plurality of avoidance grooves arranged at intervals along the circumferential direction of the pipe body, and the groove opening of each avoidance groove is arranged to face the flange plate, so that an avoidance space is formed between the connecting plate, flange plate and each avoidance groove; When two adjacent pipe joint structures are connected, the adjacent flange plates of the two adjacent pipe joint structures are connected by a connecting assembly, and the connecting assembly is accommodated in the adjacent avoidance spaces of the two adjacent pipe joint structures.
2. The jacking pipe section for a coal roadway according to claim 1, characterized in that, A sealing plate is arranged between the groove wall of each avoidance groove and the connecting plate, so that a closed cavity is formed between the flange plate, pipe body extension, connecting plate and sealing plate.
3. The jacking pipe section for a coal roadway according to claim 1 or 2, characterized in that, In the radial direction of the pipe body, the outer side face of the flange plate is lower than the outer side face of the pipe body extension, or the outer side face of the flange plate is flush with the outer side face of the pipe body extension.
4. The jacking pipe section for a coal roadway according to claim 1 or 2, characterized in that, The connecting plate comprises a connecting plate part extending in the radial direction of the pipe body and connected to the inner wall of the pipe body at one end, and a connecting plate part two connected to the other end of the connecting plate part at one end, the connecting plate part two extending in the axial direction of the pipe body, the flange plate being connected to the other end of the connecting plate part two, and the connecting plate part two, flange plate and each avoidance groove forming each avoidance space.
5. The jacking pipe section for a coal roadway according to claim 5, characterized in that, The pipe joint structure is used in a spiral pipe jacking machine, the spiral pipe jacking machine having a screw rod, the screw rod being located in the pipe during pipe jacking construction, and the connecting plate part two of each pipe joint structure being used to support the screw rod.
6. The jacking pipe section for a coal roadway according to claim 1 or 2, characterized in that, Each pipe body extension is provided with more than 6 avoidance grooves; and / or The plurality of avoidance grooves on each pipe body extension are uniformly distributed along the circumferential direction of the pipe body.
7. The jacking pipe section for a coal roadway according to claim 1 or 2, characterized in that, The connecting assembly comprises a bolt for penetrating through the two adjacent flange plates and a nut matched with the bolt; and / or The wall thickness of the pipe body is 10±1mm; and / or The thickness of the connecting plate is 10±1mm; and / or The materials of the pipe body, flange plate and connecting plate are respectively steel; and / or The inner wall of the connecting plate is coated with a fireproof and wear-resistant coating.
8. The jacking pipe section for a coal roadway according to claim 7, characterised in that, The materials of the pipe body, flange plate and connecting plate are respectively carbon steel.
9. A roof pipe for a coal roadway, characterised in that A plurality of pipe joint structures for coal roadway pipe jacking are provided, the plurality of pipe joint structures are connected in sequence, and two adjacent pipe joint structures are connected by the connecting assembly.
10. The roof support for coal lanes according to claim 9, characterized in that, The pipe jacking further comprises an adhesive filled in each avoidance space, the adhesive comprising one or a combination of structural adhesive and glass adhesive; and / or A sealing gasket is arranged between the two adjacent flange plates of two adjacent pipe joint structures.