Tunnel pipe jacking channel pipe jacking construction equipment and construction process

Abstract

This invention belongs to the field of tunnel construction technology, specifically a tunnel jacking construction equipment and process, including a pipe section; a set of lubrication holes are evenly distributed around the sidewall of the pipe section; the lubrication holes include an inlet hole, a connecting cavity, and an outlet hole; a sealing ball is provided inside the connecting cavity near the inlet hole; a compression spring is fixed between the side of the sealing ball away from the inlet hole and the sidewall of the connecting cavity; during the jacking process, lubricating slurry is injected into the lubrication holes. When the lubricating slurry enters the connecting cavity through the inlet hole, it pushes the sealing ball into the connecting cavity, thereby allowing the lubricating slurry to flow into the gap between the pipe section and the soil, reducing the frictional resistance between the pipe section and the soil. When the injection of lubricating slurry stops, the entire lubrication hole is in a sealed state, preventing lubricating slurry and groundwater from seeping back into the pipe section through the lubrication holes.

Description

Technical Field

[0001] This invention belongs to the field of tunnel construction technology, specifically a tunnel jacking channel jacking construction equipment and construction process. Background Technology

[0002] Pipe jacking, as a trenchless construction method, is increasingly widely used in the construction of small tunnels due to its outstanding advantages such as minimal impact on urban traffic and the surrounding environment, advanced technology, short construction period, and low construction cost.

[0003] Chinese patent CN205503133U discloses a pipe jacking tunnel, including a pipe body with an arc-shaped bend. A reinforcement area is located on the outer side of the arc-shaped bend, and this reinforcement area is covered with a reinforcement layer. By pouring grout into the reinforcement area on the outer side of the arc-shaped bend to form the reinforcement layer, the strength of the soil at the construction site can be greatly improved. This allows the arc-shaped bend to withstand the radial thrust caused by eccentric force, preventing the pipe from deviating outward from the arc-shaped bend and affecting construction quality. It also prevents construction safety accidents caused by soil instability and ensures the smooth progress of the pipe jacking construction.

[0004] In existing technologies, when constructing small tunnels using pipe jacking, the resistance to jacking usually comes from the end resistance of the head shield machine and the frictional resistance between the pipe section and the soil. Especially for long-distance pipe jacking projects, the frictional resistance on the side of the pipe section is too large, making the jacking process difficult and easily damaging the pipe section.

[0005] Therefore, the present invention provides a tunnel jacking channel pipe jacking construction equipment and construction process. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: A tunnel jacking construction device according to this invention includes a pipe section; a set of lubrication holes are evenly distributed around the sidewall of the pipe section; the lubrication holes, from the inside to the outside, include an inlet hole, a connecting cavity, and an outlet hole, and the diameter of the connecting cavity is larger than the diameters of the inlet hole and the outlet hole; a sealing ball is provided inside the connecting cavity near the inlet hole; a compression spring is fixedly connected between the side of the sealing ball away from the inlet hole and the sidewall of the connecting cavity; the inlet hole, connecting cavity, outlet hole, sealing ball, and compression spring are all coaxially arranged; In the prior art, when constructing small tunnels using pipe jacking construction, the resistance to jacking usually comes from the end resistance of the head shield machine and the frictional resistance between the pipe section and the soil, especially for long-distance pipe jacking projects, where the frictional resistance on the side of the pipe section is excessive. The large size of the pipe section makes the jacking process difficult and can easily damage it. To address this, this invention provides multiple lubrication holes on the sidewall of the pipe section. During jacking, workers can inject lubricating slurry into these holes inside the pipe section. When the lubricating slurry enters the connecting cavity through the inlet hole, it pushes the sealing ball into the cavity, compressing the spring and causing the sealing ball to detach from the inlet hole. This allows the lubricating slurry to flow through the inlet hole, connecting cavity, and outlet hole into the gap between the pipe section and the soil, reducing frictional resistance. When the lubricating slurry injection stops, the spring pushes the sealing ball to press firmly against the surface of the inlet hole, sealing the entire lubrication hole and preventing external lubricating slurry and groundwater from seeping back into the pipe section, thus preventing poor sealing.

[0008] Preferably, a guide rod is fixedly connected to the inside of the inlet hole by a bracket; the guide rod extends into the inside of the connecting cavity, and passes through the sealing ball and slides and seals with it; by setting the guide rod, during the movement of the sealing ball inside the connecting cavity, the guide rod always passes through the sealing ball and slides and seals with it, thereby limiting the sealing ball in the axial direction and avoiding the problem that the sealing ball and the inlet hole are difficult to align when the compression spring is deformed, resulting in poor sealing effect of the inlet hole.

[0009] Preferably, a rotating shaft is rotatably connected inside the outlet hole via a bracket; a set of spiral blades are evenly distributed around the circumference of the rotating shaft surface; an arc-shaped spring is fixed to the side wall of the outlet hole near the spiral blades; during the rotation of the rotating shaft, the spiral blades can contact the arc-shaped spring; when the lubricating slurry flows outward through the outlet hole, the lubricating slurry will synchronously push the spiral blades to rotate, and the rotating spiral blades can play a stirring effect on the lubricating slurry, promoting the uniform mixing of the various components inside the lubricating slurry. In addition, during the rotation of the spiral blades, they will intermittently strike the arc-shaped spring, causing the arc-shaped spring to vibrate and causing local micro-vibrations in the pipe section, promoting the flow of the lubricating slurry between the pipe section and the soil, enabling the lubricating slurry to disperse quickly, and further improving the lubrication effect during the jacking process.

[0010] Preferably, a pair of switching grooves are symmetrically formed on the sidewall surface of the outlet hole at the outer position of the spiral blade; a sealing plate is slidably connected inside the switching groove; the sealing plate is made of magnetic material, and the pair of sealing plates attract each other; a pair of pull ropes are slidably connected inside the sidewall of the pipe section near the connecting cavity; one end of the pull rope extends into the switching groove and is fixedly connected to the sealing plate, and the other end of the pull rope extends into the connecting cavity and is fixedly connected to the sealing ball; when lubricating slurry is injected into the lubrication hole, the sealing ball moves towards the inside of the connecting cavity and... Pulling the rope pulls the sealing plate at the other end, causing it to retract into the switching groove. This opens the outlet hole, allowing the lubricating slurry to flow out smoothly. When the lubricating slurry injection stops, the pressure spring pushes the sealing ball to press firmly against the surface of the inlet hole. The sealing ball then releases the rope, causing the sealing plates to attract each other and slide out of the switching groove, thus resealing the outlet hole. This prevents external dirt or stones from entering the connecting cavity through the outlet hole and getting stuck inside the pressure spring, which would prevent the pressure spring from compressing properly.

[0011] Preferably, a rubber layer is fixedly attached to the surface of the sealing ball; the end of the inlet hole near the sealing ball is provided with a rounded corner, and a rubber ring is fixedly attached to the rounded corner; by setting the rubber layer and the rubber ring, when the sealing ball is pressed against the surface of the inlet hole, the rubber layer will contact and squeeze with the rubber ring, thereby improving the sealing effect of the sealing ball on the inlet hole.

[0012] Preferably, a storage groove is formed on the inner wall surface of the pipe section near the inlet hole; a pressure block is slidably and sealingly connected inside the storage groove, and the pressure block protrudes from the inner wall surface of the pipe section; a connecting rope is fixedly connected between the pressure block and the side wall of the storage groove; a pin and a sealing membrane are fixedly connected inside the storage groove at the end away from the pressure block, and the sealing membrane is located between the pin and the pressure block; the storage groove between the sealing membrane and the pressure block is filled with glue; a cavity is formed inside the rubber ring, and the cavity is connected to the end of the storage groove near the pin through a pipeline; a set of guide holes are evenly formed on the side of the rubber ring near the sealing ball, and the guide holes are... The hole is connected to the cavity. After construction, the pressure block is pressed into the storage tank, which then squeezes the glue and sealing film inside the storage tank, causing the sealing film to deform and bulge towards the ejector pin. The ejector pin then punctures the sealing film, and the glue inside the storage tank enters the cavity through the pipeline and flows along the guide hole into the gap between the rubber layer and the rubber ring, thus bonding the rubber layer and the rubber ring together. This further improves the sealing effect of the guide hole, fixes the position of the sealing ball, improves the sealing stability of the guide hole, and effectively reduces the problem of water seepage during subsequent tunnel use.

[0013] Preferably, a set of permeation holes are uniformly formed on the side of the rubber layer near the rubber ring. By setting multiple permeation holes on the surface of the rubber layer, when the adhesive enters the gap between the rubber layer and the rubber ring, the adhesive will simultaneously enter the interior of the permeation holes. Through the cooperation of the guide holes and the permeation holes, the adhesive will solidify inside the guide holes and the permeation holes, thereby increasing the interlocking force between the adhesive and the rubber ring and the rubber layer, and further improving the bonding strength between the rubber ring and the rubber layer.

[0014] Preferably, a sliding groove is formed on the side wall of the storage tank near the pressure block; a locking block is slidably connected inside the sliding groove, and an elastic block is fixed between the locking block and the side wall of the sliding groove; a locking groove is formed on the side of the pressure block protruding from the side wall of the pipe section, and the locking groove cooperates with the locking block; after the pressure block is pressed into the storage tank, the locking groove moves to the position of the sliding groove and aligns with the sliding groove, and then the locking block slides into the locking groove under the push of the elastic block, so that the locking block is located between the sliding groove and the locking groove, thereby fixing the pressure block inside the storage tank and avoiding the problem of the protruding pressure block affecting the subsequent construction or use process.

[0015] A tunnel jacking construction process, which utilizes the aforementioned tunnel jacking construction equipment, includes the following steps:

[0016] S1: The tunnel boring machine and pipe sections are hoisted into the working pit using hoisting equipment and placed on the predetermined track. The tunnel boring machine and pipe sections are then pushed into the soil at the designed slope using a pipe jacking machine.

[0017] S2: While the tunnel boring machine is excavating, it also transports the slurry produced during excavation out through pipelines. After one pipeline section is pushed into the soil, the next pipeline section is placed on the predetermined track and pushed in, and this cycle continues.

[0018] S3: During the jacking process of the pipe section, the construction personnel inject lubricating slurry into the lubrication holes inside the pipe section, so that the lubricating slurry is dispersed in the gap between the pipe section and the soil, reducing the frictional resistance between the pipe section and the soil.

[0019] Preferably, the lubricating slurry in S3 is a mixture of bentonite and water; the lubricating slurry is made by mixing bentonite and water, and has a better lubrication effect, with the volume ratio of bentonite to water between 1 / 10 and 1 / 6.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. The present invention discloses a tunnel jacking construction equipment and construction process, which involves setting multiple lubrication holes on the side wall of the pipe section. During the jacking process, workers can inject lubricating slurry into the lubrication holes inside the pipe section. When the lubricating slurry enters the connecting cavity through the inlet hole, it pushes the sealing ball into the connecting cavity, compresses the compression spring, and causes the sealing ball to detach from the inlet hole. Then, the lubricating slurry can flow through the inlet hole, the connecting cavity, and the outlet hole to the gap between the pipe section and the soil, reducing the frictional resistance between the pipe section and the soil. When the injection of lubricating slurry stops, the compression spring pushes the sealing ball to press against the surface of the inlet hole, thereby sealing the entire lubrication hole and preventing lubricating slurry and groundwater from seeping back into the pipe section through the lubrication hole, which would lead to poor sealing of the pipe section.

[0022] 2. The tunnel jacking channel jacking construction equipment and construction process of the present invention, by setting a guide rod, during the movement of the sealing ball inside the connecting cavity, the guide rod always passes through the sealing ball and slides and seals with it, thereby limiting the sealing ball in the axial direction, avoiding the problem that when the compression spring is deformed, the sealing ball and the inlet hole are difficult to align, resulting in poor sealing effect of the inlet hole. Attached Figure Description

[0023] The invention will now be further described with reference to the accompanying drawings.

[0024] Figure 1 This is a perspective view of the present invention;

[0025] Figure 2 This is a cross-sectional view of the present invention;

[0026] Figure 3 yes Figure 2 Enlarged view of a portion of point A in the middle;

[0027] Figure 4 yes Figure 3 Enlarged view of a section at point B in the middle;

[0028] Figure 5 This is a cross-sectional view of the pressure block in this invention;

[0029] Figure 6 This is a schematic diagram of the process flow of the present invention;

[0030] In the diagram: 1. Pipe section; 2. Lubrication hole; 3. Inlet hole; 4. Connecting cavity; 5. Outlet hole; 6. Sealing ball; 7. Compression spring; 8. Guide rod; 9. Helical blade; 10. Arc-shaped spring; 11. Switching groove; 12. Sealing plate; 13. Pull rope; 14. Rubber layer; 15. Rubber ring; 16. Storage groove; 17. Pressure block; 18. Ejector pin; 19. Sealing membrane; 20. Cavity; 21. Guide hole; 22. Permeation hole; 23. Slide groove; 24. Locking block; 25. Elastic block; 26. Locking groove. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0032] Example 1

[0033] like Figures 1 to 4 As shown in the embodiment of the present invention, a tunnel jacking construction device includes a pipe section 1; a set of lubrication holes 2 are evenly distributed around the side wall of the pipe section 1; the lubrication holes 2 include, from the inside to the outside, an inlet hole 3, a connecting cavity 4, and an outlet hole 5, and the diameter of the connecting cavity 4 is larger than the diameter of the inlet hole 3 and the outlet hole 5; a sealing ball 6 is provided inside the connecting cavity 4 near the inlet hole 3; a compression spring 7 is fixedly connected between the side of the sealing ball 6 away from the inlet hole 3 and the side wall of the connecting cavity 4; the inlet hole 3, the connecting cavity 4, the outlet hole 5, the sealing ball 6, and the compression spring 7 are all coaxially arranged; in the prior art, when constructing small tunnels using pipe jacking construction, the resistance to jacking usually comes from the end resistance of the head shield machine and the frictional resistance between the pipe section 1 and the soil, especially for long-distance pipe jacking projects, the frictional resistance on the side of the pipe section 1 is too large, leading to the jacking process This is quite difficult and can easily damage pipe section 1. Therefore, this invention provides multiple lubrication holes 2 on the side wall of pipe section 1. During the jacking process, workers can inject lubricating slurry into the lubrication holes 2 inside pipe section 1. When the lubricating slurry enters the connecting cavity 4 through the inlet hole 3, it pushes the sealing ball 6 into the connecting cavity 4, compressing the compression spring 7 and causing the sealing ball 6 to detach from the inlet hole 3. The lubricating slurry can then flow through the inlet hole 3, connecting cavity 4, and outlet hole 5 into the gap between pipe section 1 and the soil, reducing the frictional resistance between pipe section 1 and the soil. When the injection of lubricating slurry stops, the compression spring 7 pushes the sealing ball 6 to press firmly against the surface of the inlet hole 3, thus sealing the entire lubrication hole 2. This prevents lubricating slurry and groundwater from seeping back into the pipe section 1 through the lubrication hole 2, thus preventing poor sealing of pipe section 1.

[0034] A guide rod 8 is fixedly connected to the inside of the inlet hole 3 by a bracket; the guide rod 8 extends into the inside of the connecting cavity 4, and passes through the sealing ball 6 and is slidably and sealingly connected to it; by setting the guide rod 8, during the movement of the sealing ball 6 inside the connecting cavity 4, the guide rod 8 always passes through the sealing ball 6 and is slidably and sealingly connected to it, thereby limiting the sealing ball 6 in the axial direction, avoiding the problem that when the compression spring 7 is deformed, the sealing ball 6 and the inlet hole 3 are difficult to align, resulting in a poor sealing effect on the inlet hole 3.

[0035] The outlet hole 5 is rotatably connected to a rotating shaft via a bracket; a set of spiral blades 9 are evenly distributed around the circumference of the rotating shaft; an arc-shaped spring piece 10 is fixed to the side wall of the outlet hole 5 near the spiral blades 9; during the rotation of the rotating shaft, the spiral blades 9 can contact the arc-shaped spring piece 10; when the lubricating slurry flows outward through the outlet hole 5, the lubricating slurry will synchronously push the spiral blades 9 to rotate, and the rotating spiral blades 9 can play a stirring effect on the lubricating slurry, promoting the uniform mixing of the various components inside the lubricating slurry, and during the rotation of the spiral blades 9, they will intermittently hit the arc-shaped spring piece 10, causing the arc-shaped spring piece 10 to vibrate and causing local micro-vibration of the pipe section 1, promoting the flow of the lubricating slurry between the pipe section 1 and the soil, so that the lubricating slurry can be quickly dispersed, further improving the lubrication effect during the jacking process.

[0036] A pair of switching grooves 11 are symmetrically formed on the sidewall surface of the outlet hole 5 at the position outside the spiral blade 9; a sealing plate 12 is slidably connected inside the switching groove 11; the sealing plate 12 is made of magnetic material, and the pair of sealing plates 12 attract each other; a pair of pull ropes 13 are slidably connected inside the sidewall of the pipe section 1 near the connecting cavity 4; one end of the pull rope 13 extends into the switching groove 11 and is fixedly connected to the sealing plate 12, and the other end of the pull rope 13 extends into the connecting cavity 4 and is fixedly connected to the sealing ball 6; when lubricating slurry is injected into the lubrication hole 2, the sealing ball 6 moves towards the connecting cavity 4 and pulls. Pulling the rope 13, and then pulling the other end of the rope 13, pulls the sealing plate 12, causing the sealing plate 12 to retract into the switching groove 11. This opens the outlet hole 5, allowing the lubricating slurry to flow out smoothly through the outlet hole 5. When the lubricating slurry injection stops, the pressure spring 7 pushes the sealing ball 6 to press back against the surface of the inlet hole 3. The sealing ball 6 then relaxes the rope 13, and the pair of sealing plates 12 attract each other and slide out of the switching groove 11, thereby resealing the outlet hole 5. This prevents external soil or stones from entering the connecting cavity 4 through the outlet hole 5 and getting stuck inside the pressure spring 7, causing the pressure spring 7 to be unable to compress smoothly.

[0037] A rubber layer 14 is fixedly attached to the surface of the sealing ball 6; the end of the inlet hole 3 near the sealing ball 6 is provided with a rounded corner, and a rubber ring 15 is fixedly attached to the rounded corner; by setting the rubber layer 14 and the rubber ring 15, when the sealing ball 6 is pressed against the surface of the inlet hole 3, the rubber layer 14 will contact and squeeze the rubber ring 15, thereby improving the sealing effect of the sealing ball 6 on the inlet hole 3.

[0038] A storage groove 16 is formed on the inner wall surface of the pipe section 1 near the inlet hole 3; a pressure block 17 is slidably and sealingly connected inside the storage groove 16, and the pressure block 17 protrudes from the inner wall surface of the pipe section 1; a connecting rope is fixed between the pressure block 17 and the side wall of the storage groove 16; a pin 18 and a sealing membrane 19 are fixedly connected inside the storage groove 16 away from the pressure block 17, and the sealing membrane 19 is located between the pin 18 and the pressure block 17; the storage groove 16 between the sealing membrane 19 and the pressure block 17 is filled with glue; a cavity 20 is formed inside the rubber ring 15, and the cavity 20 is connected to the end of the storage groove 16 near the pin 18 through a pipeline; a set of guide holes 21 are evenly formed on the side of the rubber ring 15 near the sealing ball 6. The guide hole 21 is connected to the cavity 20. After construction, the pressure block 17 is pressed into the storage tank 16 by pressing the pressure block 17. The pressure block 17 then squeezes the glue and sealing film 19 inside the storage tank 16, causing the sealing film 19 to deform and bulge towards the ejector pin 18. The ejector pin 18 then punctures the sealing film 19, and the glue inside the storage tank 16 enters the cavity 20 through the pipeline and flows along the guide hole 21 into the gap between the rubber layer 14 and the rubber ring 15, thereby bonding the rubber layer 14 and the rubber ring 15 together, further improving the sealing effect of the inlet hole 3, fixing the position of the sealing ball 6, improving the sealing stability of the inlet hole 3, and effectively reducing the problem of water seepage during subsequent tunnel use.

[0039] A set of permeation holes 22 are uniformly formed on the side of the rubber layer 14 near the rubber ring 15. By setting multiple permeation holes 22 on the surface of the rubber layer 14, when the adhesive enters the gap between the rubber layer 14 and the rubber ring 15, the adhesive will simultaneously enter the interior of the permeation holes 22. Through the cooperation of the guide hole 21 and the permeation hole 22, the adhesive will solidify inside the guide hole 21 and the permeation hole 22, thereby increasing the interlocking force between the adhesive and the rubber ring 15 and the rubber layer 14, and further improving the bonding strength between the rubber ring 15 and the rubber layer 14.

[0040] Example 2

[0041] like Figure 5As shown in the comparative embodiment one, another embodiment of the present invention is as follows: a sliding groove 23 is provided on the side wall of the storage tank 16 near the pressure block 17; a locking block 24 is slidably connected inside the sliding groove 23, and an elastic block 25 is fixed between the locking block 24 and the side wall of the sliding groove 23; a locking groove 26 is provided on the side of the pressure block 17 protruding from the side wall of the pipe section 1, and the locking groove 26 cooperates with the locking block 24; after the pressure block 17 is pressed into the storage tank 16, the locking groove 26 moves to the position of the sliding groove 23 and aligns with the sliding groove 23, and then the locking block 24 slides into the locking groove 26 under the push of the elastic block 25, so that the locking block 24 is located between the sliding groove 23 and the locking groove 26, thereby fixing the pressure block 17 inside the storage tank 16 and avoiding the problem of the protruding pressure block 17 affecting the subsequent construction or use process.

[0042] like Figure 6 As shown, a tunnel jacking construction process is described, which utilizes the aforementioned tunnel jacking construction equipment and includes the following steps:

[0043] S1: The tunnel boring machine and pipe section 1 are hoisted into the working pit by hoisting equipment and placed on the predetermined track. The tunnel boring machine and pipe section 1 are then pushed into the soil at the designed slope by the pipe jacking machine.

[0044] S2: While the tunnel boring machine is excavating, it transports the slurry generated during the excavation through pipelines. After one pipeline section 1 is pushed into the soil, the next pipeline section 1 is placed on the predetermined track and pushed in, and so on in a cycle.

[0045] S3: During the jacking process of pipe section 1, the construction personnel inject lubricating slurry into the lubrication hole 2 inside the pipe section 1, so that the lubricating slurry is dispersed in the gap between the pipe section 1 and the soil, thereby reducing the frictional resistance between the pipe section 1 and the soil.

[0046] The lubricating slurry described in S3 is a mixture of bentonite and water; the lubricating slurry is made by mixing bentonite and water, and has a better lubrication effect. The volume ratio of bentonite to water is between 1 / 10 and 1 / 6.

[0047] Working Principle: This invention involves setting multiple lubrication holes 2 on the side wall of the pipe section 1. During the jacking process, workers can inject lubricating slurry into the lubrication holes 2 inside the pipe section 1. When the lubricating slurry enters the connecting cavity 4 through the inlet hole 3, it pushes the sealing ball 6 into the connecting cavity 4, compressing the compression spring 7 and causing the sealing ball 6 to disengage from the inlet hole 3. The lubricating slurry can then flow through the inlet hole 3, the connecting cavity 4, and the outlet hole 5 into the gap between the pipe section 1 and the soil, reducing the frictional resistance between the pipe section 1 and the soil. When the injection of lubricating slurry stops, the compression spring 7 pushes the sealing ball 6 to press firmly against the surface of the inlet hole 3, thereby ensuring the entire lubrication hole... 2. In a sealed state, this prevents external lubricating slurry and groundwater from seeping back into the pipe section 1 through the lubrication hole 2, thus avoiding poor sealing of the pipe section 1. By setting the guide rod 8, the sealing ball 6 moves through the sealing ball 6 and slides and seals with it during its movement inside the connecting cavity 4. This limits the sealing ball 6 in the axial direction, preventing the sealing ball 6 from being difficult to align with the inlet hole 3 when the compression spring 7 deforms, thus avoiding poor sealing effect of the inlet hole 3. When the lubricating slurry flows outward through the outlet hole 5, it will synchronously drive the spiral blade 9 to rotate. The rotating spiral blade 9 can then... The liquid acts as a stirrer, promoting uniform mixing of the components within the lubricating slurry. During rotation, the spiral blades 9 intermittently strike the arc-shaped spring 10, causing it to vibrate and resulting in minor vibrations in the pipe section 1. This promotes the flow of the lubricating slurry between the pipe section 1 and the soil, allowing for rapid dispersion and further enhancing lubrication during the jacking process. When lubricating slurry is injected into the lubrication hole 2, the sealing ball 6 moves towards the connecting cavity 4 and pulls the rope 13. The other end of the rope 13 then pulls the sealing plate 12, causing it to retract into the switching groove 11. This, in turn, opens the outlet hole 5. This allows the lubricating slurry to flow smoothly out through the outlet hole 5. When the lubricating slurry injection stops, the compression spring 7 pushes the sealing ball 6 to press back against the surface of the inlet hole 3. In turn, the sealing ball 6 relaxes the pull rope 13, and the pair of sealing plates 12 attract each other and slide out of the switching groove 11, thereby resealing the outlet hole 5. This prevents external soil or stones from entering the connecting cavity 4 through the outlet hole 5 and getting stuck inside the compression spring 7, causing the compression spring 7 to be unable to compress smoothly. By setting the rubber layer 14 and the rubber ring 15, when the sealing ball 6 is pressed against the surface of the inlet hole 3, the rubber layer 14 will contact and squeeze the rubber ring 15, thereby improving the sealing effect of the sealing ball 6 on the inlet hole 3.After construction, the pressing block 17 is pressed into the storage tank 16, which in turn compresses the adhesive and sealing membrane 19 inside the storage tank 16. This causes the sealing membrane 19 to deform and bulge towards the ejector pin 18, which then punctures the sealing membrane 19. The adhesive inside the storage tank 16 enters the cavity 20 through the pipeline and flows along the guide hole 21 into the gap between the rubber layer 14 and the rubber ring 15, thus bonding the rubber layer 14 and the rubber ring 15 together. This further improves the sealing effect on the inlet hole 3, fixes the position of the sealing ball 6, improves the sealing stability of the inlet hole 3, and effectively reduces the problem of water seepage during subsequent tunnel use. By setting multiple permeation holes 22 on the surface of the rubber layer 14, the adhesive... When the adhesive enters the gap between the rubber layer 14 and the rubber ring 15, it simultaneously enters the permeation hole 22. Through the cooperation of the guide hole 21 and the permeation hole 22, the adhesive cures inside the guide hole 21 and the permeation hole 22, thereby increasing the interlocking force between the adhesive and the rubber ring 15 and the rubber layer 14, and further improving the bonding strength between the rubber ring 15 and the rubber layer 14. After the pressure block 17 is pressed into the storage groove 16, the locking groove 26 moves to the position of the sliding groove 23 and aligns with the sliding groove 23. Then, the locking block 24 slides into the locking groove 26 under the push of the elastic block 25, so that the locking block 24 is located between the sliding groove 23 and the locking groove 26, thereby fixing the pressure block 17 inside the storage groove 16 and avoiding the problem of the protruding pressure block 17 affecting the subsequent construction or use process.

[0048] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0049] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel jacking tunnel construction apparatus, characterised in that: The system includes a pipe section (1); a set of lubrication holes (2) are evenly distributed around the side wall of the pipe section (1); the lubrication holes (2) include an inlet hole (3), a connecting cavity (4) and an outlet hole (5) from the inside to the outside, and the diameter of the connecting cavity (4) is larger than the diameter of the inlet hole (3) and the outlet hole (5); a sealing ball (6) is provided inside the connecting cavity (4) near the inlet hole (3); a compression spring (7) is fixed between the side of the sealing ball (6) away from the inlet hole (3) and the side wall of the connecting cavity (4); the inlet hole (3), the connecting cavity (4), the outlet hole (5), the sealing ball (6) and the compression spring (7) are all coaxially arranged; A guide rod (8) is fixed inside the inlet hole (3) by a bracket; the guide rod (8) extends into the connecting cavity (4) and passes through the sealing ball (6) and is slidably and sealingly connected to it; The outlet hole (5) is rotatably connected to a shaft via a bracket; a set of spiral blades (9) are evenly distributed around the circumference of the shaft surface; an arc-shaped spring piece (10) is fixed to the side wall of the outlet hole (5) near the spiral blades (9); during the rotation of the shaft, the spiral blades (9) can contact the arc-shaped spring piece (10); A pair of switching grooves (11) are symmetrically opened on the side wall surface of the outlet hole (5) at the position outside the spiral blade (9); a sealing plate (12) is slidably connected inside the switching groove (11); the sealing plate (12) is made of magnetic material, and the pair of sealing plates (12) attract each other; a pair of pull ropes (13) are slidably connected inside the side wall of the pipe section (1) near the connecting cavity (4); one end of the pull rope (13) extends into the switching groove (11) and is fixedly connected to the sealing plate (12), and the other end of the pull rope (13) extends into the connecting cavity (4) and is fixedly connected to the sealing ball (6); A rubber layer (14) is fixedly attached to the surface of the sealing ball (6); the end of the inlet hole (3) near the sealing ball (6) is provided with a rounded corner, and a rubber ring (15) is fixedly attached to the rounded corner. A storage groove (16) is provided on the inner wall surface of the pipe section (1) near the inlet hole (3); a pressure block (17) is slidably and sealingly connected inside the storage groove (16), and the pressure block (17) protrudes from the inner wall surface of the pipe section (1); a connecting rope is fixedly connected between the pressure block (17) and the side wall of the storage groove (16); a pin (18) and a sealing membrane (19) are fixedly connected inside the end of the storage groove (16) away from the pressure block (17), and the sealing membrane (19) Located between the ejector pin (18) and the pressure block (17); the storage groove (16) between the sealing membrane (19) and the pressure block (17) is filled with glue; the rubber ring (15) has a cavity (20) inside, and the cavity (20) is connected to the end of the storage groove (16) near the ejector pin (18) through a pipeline; a set of guide holes (21) are evenly opened on the side of the rubber ring (15) near the sealing ball (6), and the guide holes (21) are connected to the cavity (20).

2. The tunnel jacking construction equipment according to claim 1, characterized in that: The rubber layer (14) has a set of permeable holes (22) evenly distributed on the side near the rubber ring (15).

3. The tunnel jacking construction equipment according to claim 2, characterized in that: The storage tank (16) has a sliding groove (23) on its side wall near the pressure block (17); a locking block (24) is slidably connected inside the sliding groove (23), and an elastic block (25) is fixed between the locking block (24) and the side wall of the sliding groove (23); a locking groove (26) is provided on the side of the pressure block (17) protruding from the side wall of the pipe section (1), and the locking groove (26) cooperates with the locking block (24).

4. A tunnel jacking construction process, wherein the process employs the tunnel jacking construction equipment described in any one of claims 1-3, characterized in that: The process includes the following steps: S1: The shield machine and pipe section (1) are hoisted into the working pit by hoisting equipment and placed on the predetermined track. The shield machine and pipe section (1) are then pushed into the soil at the designed slope by the pipe jacking machine. S2: While the tunnel boring machine is excavating, the slurry generated during the excavation is transported out through pipelines. After one pipeline section (1) is pushed into the soil, the next pipeline section (1) is placed on the predetermined track and pushed in, and so on. S3: During the jacking process of the pipe section (1), the construction personnel inject lubricating slurry into the lubrication hole (2) inside the pipe section (1), so that the lubricating slurry is dispersed in the gap between the pipe section (1) and the soil, thereby reducing the frictional resistance between the pipe section (1) and the soil.

5. The tunnel jacking construction process according to claim 4, characterized in that: The lubricating slurry described in S3 is a mixture of bentonite and water.

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