A long-distance steep slope tunnel uphill excavation construction technology and device

Abstract

The present invention belongs to the technical field of tunneling construction, and relates to a long-distance steep slope tunnel uphill tunneling construction process and device. The process includes: S1, when discharging slag, open the slag discharge mechanism to discharge the mud from the slag discharge pipe. S2, when there is too much mud, the mud enters the diversion chamber to reduce the pressure of the screw machine body. S3, the mud flows along the elastic spiral tube and sprays out from the other end of the elastic spiral tube, and the sprayed mud drives the counterweight ring to rotate. S4, the impact force of the mud causes the elastic spiral tube to stretch. The sprayed mud drives the counterweight ring to rotate, thereby reducing the speed of the mud flow and buffering the impact force of the mud on the diversion box. When the mud enters the elastic spiral tube, the mud overcomes the elastic force of the elastic spiral tube and overcomes its own gravity to move upward along the elastic spiral tube, further reducing the impact force of the mud. When the slag discharge pipe is discharging slag, the fan-shaped plate is in a staggered state up and down, which can slow down the flow rate of the mud and play a role in preventing gushing.

Description

Technical Field

[0001] The invention belongs to the technical field of tunneling construction, and relates to a long-distance steep slope tunnel uphill tunneling construction process and device. Background Art

[0002] During the construction of long-distance steep slope tunnels, earth pressure balance shield machines are often used. The screw conveyor is one of the key components of the earth pressure balance shield machine. The screw conveyor is the earth discharge device of the earth pressure balance shield. Its main function is to discharge the soil cut by the cutter disc from the shield soil bin. The ballast forms a sealed soil plug during the process of being discharged from the screw conveyor, which can keep the pressure in the sealed soil bin stable within a certain range.

[0003] During the working process, there are many rock cracks in the water-rich strata. Under the action of high water pressure, the slag outlet of the screw machine frequently gushes. At present, the main method is to set a diversion chamber to divert the mud into the diversion box to reduce the occurrence of gushing. However, only a diversion box is set without a buffer mechanism. When the mud enters the diversion box at high speed, it causes a lot of pressure on the inner wall of the diversion box, causing damage to the diversion box and creating a danger.

[0004] In order to solve the above problems, the present invention proposes a long-distance steep slope tunnel uphill excavation construction process and device. Summary of the invention

[0005] In order to solve the problems existing in the background technology, the present invention proposes a long-distance steep slope tunnel uphill excavation construction process and device.

[0006] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present invention is as follows: the long-distance steep slope tunnel uphill excavation construction process includes: S1, the screw machine body works, the mud enters the screw machine body, and the motor is started when slag discharge is required. The motor drives the threaded rod to rotate, so that the first sleeve moves in the direction close to the motor. The first sleeve pulls the fan-shaped plate to rotate through the connecting rod, so that an opening is formed between the fan-shaped plate and the inner wall of the diverter box, and the mud flows out from the opening;

[0007] S2, when there is too much mud in the screw machine body, the mud enters the elastic spiral tube from the screw machine body, flows along the elastic spiral tube, and is sprayed out from the other end of the elastic spiral tube and sprayed onto the inner wall of the counterweight ring, pushing the corresponding counterweight ring to rotate;

[0008] S3, when the mud enters the elastic spiral tube, the impact force of the mud causes the elastic spiral tube to stretch, and the upper end of the elastic spiral tube moves upward along the fixed column, so that the upper end opening of the elastic spiral tube corresponds to different counterweight rings, thereby causing the different counterweight rings to rotate, and the upper counterweight ring drives the adjacent lower counterweight ring to rotate in the same direction under the action of the one-way bearing;

[0009] S4, the slurry sprayed out through the elastic spiral tube finally falls on the partition plate, opens the blocking plate, falls from the discharge hole, and is finally discharged through the slag discharge mechanism.

[0010] The long-distance steep slope tunnel uphill excavation construction device used in the present invention comprises a screw machine body, the screw machine body is connected with a diverter box and a slag discharge pipe; a slag discharge mechanism is movably arranged in the slag discharge pipe; a buffer mechanism is arranged in the diverter box;

[0011] A partition plate is fixedly provided between the diverter box and the screw machine body, a discharge hole is opened on the partition plate, and a blocking plate for blocking the discharge hole is movably provided on the diverter box;

[0012] The buffer mechanism includes an elastic spiral tube and a counterweight ring;

[0013] One end of the elastic spiral tube is fixedly passed through the partition plate and connected to the screw machine body; the other end of the elastic spiral tube is longitudinally slidably arranged in the diverter box, and a plurality of counterweight rings are rotatably arranged in the diverter box, and two adjacent counterweight rings are connected by a one-way bearing.

[0014] Furthermore, the slag discharge mechanism includes a driving assembly, a connecting rod, and a fan-shaped plate;

[0015] The fan-shaped plates are multiple, and the multiple fan-shaped plates are enclosed into a circular plate to cover the slag discharge pipe, and the fan-shaped plates are rotatably arranged in the slag discharge pipe;

[0016] One end of the connecting rod is hinged on the driving assembly, and the other end of the connecting rod is hinged to the fan-shaped plate; there are multiple connecting rods, and they correspond to the fan-shaped plates one by one; the lengths of adjacent connecting rods are not equal, and the angles between adjacent connecting rods and the threaded rods are not equal.

[0017] Further, the driving assembly includes a motor, a threaded rod, and a first sleeve;

[0018] The motor is fixedly arranged in the slag discharge pipe, and the threaded rod is fixedly arranged on the motor shaft of the motor; the first sleeve is threadedly matched with the threaded rod; one end of the connecting rod is hinged on the first sleeve, and the other end of the connecting rod is hinged to the fan-shaped plate.

[0019] Furthermore, a first fixing rod and a second fixing rod are fixed in the slag discharge pipe;

[0020] The motor is fixedly mounted on the second fixing rod, and the threaded rod is rotatably arranged between the first fixing rod and the second fixing rod.

[0021] Furthermore, a second sleeve is fixedly provided on the first fixing rod, a connecting ring is fixed on the circumferential surface of the second sleeve; and the sector plate is rotatably connected to the connecting ring.

[0022] Furthermore, a fixing column is fixed in the diverter box; and the elastic spiral tube is wound around the fixing column.

[0023] Furthermore, both ends of the elastic spiral tube are fixed with fixing rings, and one end of the elastic spiral tube connected to the spiral machine body is fixedly connected to the partition plate through the fixing ring; one end of the elastic spiral tube in the diversion box is slidably matched with the fixing column through the fixing ring.

[0024] Furthermore, a T-shaped sliding groove is provided on the fixing column, and a T-shaped sliding block which is slidably matched with the T-shaped sliding groove is fixed on the fixing ring.

[0025] Furthermore, the blocking plate is hinged to the inner wall of the diverter box via a hinge shaft, and a torsion spring is provided on the hinge shaft; one end of the torsion spring is fixedly connected to the blocking plate, and the other end of the torsion spring is fixedly connected to the inner wall of the diverter box.

[0026] Compared with the prior art, the present invention has the following beneficial effects: when the mud enters the diversion chamber, the mud enters the elastic spiral tube and is sprayed out through the upper end opening of the elastic spiral tube. The sprayed mud drives the counterweight ring to rotate, thereby reducing the flow speed of the mud and buffering the impact force of the mud on the diversion box.

[0027] When the mud enters the elastic spiral tube, the impact force of the mud causes the elastic spiral tube to stretch and overcome its own gravity to move upward along the elastic spiral tube, further reducing the impact force of the mud.

[0028] When the mud pressure in the screw machine body is too high, the mud enters the diversion chamber to relieve the pressure in the screw machine body and reduce the occurrence of gushing.

[0029] When the slag is discharged from the slag discharge pipe, multiple fan-shaped plates are in an up and down staggered state, which can slow down the flow rate of the mud and play a role in preventing gushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0032] Figure 3 is a schematic diagram of the elastic spiral tube in the present invention;

[0033] Figure 4 It is a schematic diagram of the structure of the blocking plate and the partition plate in the present invention;

[0034] Figure 5 It is a schematic diagram of the structure of the connecting ring in the present invention;

[0035] Figure 6 It is a structural schematic diagram of the slag discharge mechanism in the present invention;

[0036] Figure 7 It is a schematic diagram of the slag discharge state of the slag discharge mechanism in the present invention.

[0037] In the figure: 1. Screw machine body; 2. Diverter box; 3. Slag discharge pipe; 4. Diverter chamber; 5. Fixed column; 6. Counterweight ring; 7. One-way bearing; 8. Elastic spiral tube; 9. Sealing plate; 10. Partition plate; 11. First fixed rod; 12. Second fixed rod; 13. Fan-shaped plate; 14. Connecting rod; 15. Motor; 16. Threaded rod; 17. First sleeve; 18. Second sleeve; 19. Fixed ring; 20. T-shaped slide groove; 21. Connecting ring; 61. First counterweight ring; 62. Second counterweight ring; 63. Third counterweight ring. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] like Figure 1-Figure 7 As shown, the technical solution adopted by the present invention is as follows: a long-distance steep slope tunnel uphill excavation construction process, comprising the following steps: S1, the screw machine body 1 works, mud enters the screw machine body 1, and the motor 15 is started when slag discharge is required, and the motor 15 drives the threaded rod 16 to rotate, so that the first sleeve 17 moves in the direction close to the motor 15, and the first sleeve 17 pulls the fan plate 13 to rotate through the connecting rod 14, so that an opening is formed between the fan plate 13 and the inner wall of the diverter box 2, and the mud flows out from the opening;

[0040] S2, when there is too much mud in the screw machine body 1, the mud enters the elastic spiral tube 8 from the screw machine body 1, flows along the elastic spiral tube 8, and is sprayed out from the other end of the elastic spiral tube 8, and sprayed onto the inner wall of the counterweight ring 6, pushing the corresponding counterweight ring 6 to rotate;

[0041] S3, when the mud enters the elastic spiral tube 8, the impact force of the mud causes the elastic spiral tube 8 to stretch, and the upper end of the elastic spiral tube 8 moves upward along the fixed column 5, so that the upper end opening of the elastic spiral tube 8 corresponds to different counterweight rings 6, thereby causing different counterweight rings 6 to rotate, and the upper counterweight ring 6 drives the adjacent lower counterweight ring 6 to rotate in the same direction under the action of the one-way bearing 7;

[0042] S4, the slurry sprayed out through the elastic spiral tube 8 finally falls on the partition plate 10, and opens the blocking plate 9, falls from the discharge hole, and is finally discharged through the slag discharge mechanism.

[0043] like Figure 1-Figure 7 As shown, the present invention also includes a long-distance steep slope tunnel uphill excavation construction device, which includes a screw machine body 1, and the screw machine body 1 is connected to a slag discharge pipe 3 and a diverter box 2. A slag discharge mechanism is arranged in the slag discharge pipe 3, and the mud is discharged from the screw machine body 1 through the slag discharge mechanism. A partition plate 10 is fixedly arranged between the diverter box 2 and the screw machine body 1, and the partition plate 10 separates the diverter box 2 and the screw machine body 1. A discharge hole is arranged on the partition plate 10, and a sealing plate 9 is hinged on the inner wall of the diverter box 2 through a hinge shaft. A torsion spring is sleeved on the hinge shaft, one end of the torsion spring is fixedly connected to the sealing plate 9, and the other end of the torsion spring is fixedly connected to the inner wall of the diverter box 2. The sealing plate 9 is used to block the discharge hole. The design of the sealing plate 9 should ensure that the mud cannot enter the upper part of the partition plate 10 from the lower part of the partition plate 10 through the sealing plate 9, and the structural design of the sealing plate 9 and the partition plate 10 belongs to conventional technical means.

[0044] A diverter chamber 4 is provided in the diverter box 2. A buffer mechanism is provided in the diverter chamber 4. When the pressure in the screw machine body 1 is too high, the mud enters the diverter chamber 4, which reduces the pressure in the screw machine body 1 and reduces the occurrence of gushing. The mud entering the diverter chamber 4 is acted upon by the buffer mechanism, and the flow rate of the mud is reduced. Then, the mud falls into the diverter box 2, and the impact of the mud on the diverter box 2 is reduced. Then, the mud is discharged from the diverter box through the discharge hole and discharged to the outside of the screw machine body 1 through the slag discharge mechanism.

[0045] The buffer mechanism includes an elastic spiral tube 8 and a counterweight ring 6 .

[0046] In the flow dividing chamber 4, a fixed column 5 is fixedly arranged between the partition plate 10 and the inner wall of the flow dividing box 2. A longitudinal T-shaped slide groove 20 is provided on the fixed column 5. The elastic spiral tube 8 is movably sleeved on the fixed column 5. One end of the elastic spiral tube 8 passes through the partition plate 10 and communicates with the screw machine body 1, and the other end of the elastic spiral tube 8 is slidably matched with the T-shaped slide groove 20.

[0047] A fixing ring 19 is fixed at both openings of the elastic spiral tube 8. One end of the elastic spiral tube 8 communicating with the screw machine body 1 is fixedly connected to the partition plate 10 through the fixing ring 19, and a T-shaped slider that slidably cooperates with the T-shaped slide groove 20 is fixed on the fixing ring 19 at the other end of the elastic spiral tube 8. The elastic spiral tube 8 can be axially extended under the impact of the upward mud inside, and has the characteristic of automatically restoring its original shape when the mud impact disappears.

[0048] The counterweight ring 6 is rotatably disposed in the diversion chamber 4 of the diversion box 2 , and a damper is disposed between the counterweight ring 6 and the inner surface of the diversion box 2 .

[0049] In this embodiment, there are three counterweight rings 6. For the convenience of description, the three counterweight rings 6 are named as the first counterweight ring 61, the second counterweight ring 62, and the third counterweight ring 63. The first counterweight ring 61, the second counterweight ring 62, and the third counterweight ring 63 are rotatably connected to each other through the one-way bearing 7. The third counterweight ring 63 is rotatably connected to the inner wall of the upper end of the shunt box 2. Dampers are provided between the first counterweight ring 61, the second counterweight ring 62, and the third counterweight ring 63 and the inner surface of the shunt box 2, respectively.

[0050] When the pressure in the screw machine body 1 is too high, the mud enters the elastic spiral tube 8 through the lower opening of the elastic spiral tube 8 and is ejected through the upper opening of the elastic spiral tube 8. Since the opening of the elastic spiral tube 8 is inclined with respect to the normal direction of the inner wall of the counterweight ring 6, the mud ejected through the elastic spiral tube 8 is ejected onto the inner wall of the counterweight ring 6, exerting pressure on the inner wall of the counterweight ring 6, and the pressure can be decomposed into a force perpendicular to the inner wall of the counterweight ring 6 and a force tangential to the counterweight ring 6. The force tangential to the counterweight ring 6 pushes the counterweight ring 6 to rotate, thereby slowing down the flow rate of the mud, reducing the kinetic energy of the mud, and thus buffering the impact force of the mud.

[0051] The impact force of the mud causes the elastic spiral tube 8 to stretch, and the upper end of the elastic spiral tube 8 moves upward along the fixed column 5. The upper end opening of the elastic spiral tube 8 corresponds to the first counterweight ring 61, the second counterweight ring 62, and the third counterweight ring 63 in sequence. When the upper end opening of the elastic spiral tube 8 contacts the second counterweight ring 62, the ejected mud drives the second counterweight ring 62 to rotate. Since the first counterweight ring 61 and the second counterweight ring 62 are connected by the one-way bearing 7, when the second counterweight ring 62 rotates, it also drives the first counterweight ring 61 to rotate in the same direction. Similarly, when the opening of the elastic spiral tube 8 is opposite to the inner wall of the third counterweight ring 63, the mud will drive the third counterweight ring 63 to rotate, and at the same time drive the second counterweight ring 62 and the first counterweight ring 61 to rotate in the same direction. Multiple counterweight rings 6 rotate simultaneously, further slowing down the flow rate of the mud and buffering the impact force of the mud.

[0052] The slag discharge mechanism includes a driving assembly, a connecting rod 14 and a fan-shaped plate 13 .

[0053] The driving assembly includes a motor 15 , a threaded rod 16 , and a first sleeve 17 .

[0054] A first fixing rod 11 and a second fixing rod 12 are fixed in the slag discharge pipe 3. The first fixing rod 11 is close to the screw machine body 1, and the second fixing rod 12 is below the first fixing rod 11. The motor 15 is fixedly mounted on the second fixing rod 12, and a second sleeve 18 is fixedly mounted on the first fixing rod 11. The threaded rod 16 is drive-connected to the motor 15, and one end of the threaded rod 16 away from the motor 15 is rotatably mounted in the second sleeve 18. The first sleeve 17 is sleeved on the threaded rod 16 and is threadedly connected to the threaded rod 16.

[0055] A connecting ring 21 is fixedly connected to the circumferential surface of the second sleeve 18. The sector plate 13 is rotatably connected to the connecting ring 21. There are multiple sector plates 13, and the multiple sector plates 13 are arranged in a circular array. In the initial state, the multiple sector plates 13 enclose a circular plate to block the slag discharge pipe 3. The lower edge of the side of the sector plate 13 is in an arc shape or the side of the sector plate 13 is in a hemispherical structure, so that there will be no motion interference when the sector plate 13 moves, and it can move smoothly. In addition, a reasonable gap can also be designed between the sector plates 13 to ensure that there is no interference between adjacent sector plates 13 during movement. In order to achieve no interference between adjacent sector plates 13 during movement, the specific structural design of the sector plate 13 is a conventional technical means and will not be described in detail here.

[0056] There are multiple connecting rods 14, and they match multiple sector plates 13 one by one. One end of the connecting rod 14 is hinged on the first sleeve 17, and the other end of the connecting rod 14 is hinged with the corresponding sector plate 13. The lengths of adjacent connecting rods 14 are not equal, and the angles between adjacent connecting rods 14 and the threaded rod 16 are not equal. In this embodiment, there are two lengths of the connecting rod 14, one of which has a length of X, and the length of the connecting rod 14 adjacent to the connecting rod 14 with a length of X is Y, and X and Y are not equal. In this way, when the connecting rod 14 moves with the first sleeve 17, the rotation angle of the sector plate 13 connected to the connecting rod 14 with a length of X is the same as the rotation angle of the sector plate 13 connected to the connecting rod 14 with a length of Y, so that the multiple sector plates 13 form a double-layer staggered structure as a whole. In the initial state, the multiple sector plates 13 enclose a circular plate to block the slag discharge pipe 3. When slag discharge is required, the motor 15 is started, and the motor 15 drives the threaded rod 16 to rotate, thereby causing the first sleeve 17 to move downward along the threaded rod 16, thereby causing the connecting rod 14 to move downward, and the connecting rod 14 drives the corresponding sector plate 13 to rotate around the connecting ring 21, so that an opening is formed between the sector plate 13 and the inner wall of the slag discharge pipe 3, and the mud is discharged from the opening. In this process, since the lengths of adjacent connecting rods 14 are unequal, and the angles between adjacent connecting rods 14 and the threaded rod 16 are unequal, when the first sleeve 17 moves downward, the rotation speeds of adjacent sector plates 13 are unequal, thereby avoiding interference between adjacent sector plates 13 during the operation process.

[0057] At the same time, the fan-shaped plates 13 can provide a certain resistance to the mud in the slag discharge pipe 3, reduce the speed of the mud when it is discharged, and thus reduce the probability of mud gushing. Multiple fan-shaped plates 13 are in an up-and-down staggered state. In this way, when the mud falls on the fan-shaped plates 13 of the upper layer, some of it is discharged from the opening between the fan-shaped plates 13 and the inner wall of the slag discharge pipe 3, and some of it falls on the fan-shaped plates 13 of the lower layer, and then discharged from the fan-shaped plates 13 of the lower layer. The mud is buffered by multiple layers of fan-shaped plates 13, which can effectively reduce the flow rate of the mud and reduce the occurrence of gushing.

[0058] By controlling the downward movement distance of the first sleeve 17 , the size of the opening between the sector plate 13 and the inner wall of the slag discharge pipe 3 can be controlled, thereby adjusting the flow rate of the slurry discharged from the slag discharge pipe 3 .

[0059] Working principle: The slurry enters the screw machine body 1. When slag discharge is required, the motor 15 is started, and the motor 15 drives the threaded rod 16 to rotate, thereby causing the first sleeve 17 to move downward along the threaded rod 16, thereby causing the connecting rod 14 to move downward, and the connecting rod 14 drives the corresponding fan-shaped plate 13 to rotate around the connecting ring 21, so that an opening is formed between the fan-shaped plate 13 and the inner wall of the slag discharge pipe 3, and the slurry is discharged from the opening. By controlling the downward movement distance of the first sleeve 17, the size of the opening between the fan-shaped plate 13 and the inner wall of the slag discharge pipe 3 can be controlled, thereby adjusting the size of the slurry discharge flow from the slag discharge pipe 3.

[0060] When there is too much mud in the screw machine body 1 and the pressure in the screw machine body 1 is too high, the mud enters the elastic spiral tube 8 through the lower end opening of the elastic spiral tube 8 and is ejected at a high speed through the upper end opening of the elastic spiral tube 8. The mud ejected through the elastic spiral tube 8 is sprayed onto the inner wall of the counterweight ring 6, exerting pressure on the inner wall of the counterweight ring 6, and the pressure can be decomposed into a force perpendicular to the inner wall of the counterweight ring 6 and a force tangential to the counterweight ring 6. The force tangential to the counterweight ring 6 pushes the counterweight ring 6 to rotate, thereby slowing down the flow rate of the mud and reducing the kinetic energy of the mud.

[0061] The impact force of the mud causes the elastic spiral tube 8 to stretch, and the upper end of the elastic spiral tube 8 moves upward along the fixed column 5. The upper end opening of the elastic spiral tube 8 corresponds to the first counterweight ring 61, the second counterweight ring 62, and the third counterweight ring 63 in sequence. When the upper end opening of the elastic spiral tube 8 contacts the second counterweight ring 62, the mud drives the second counterweight ring 62 to rotate. Since the first counterweight ring 61 and the second counterweight ring 62 are connected by the one-way bearing 7, when the second counterweight ring 62 rotates, it drives the first counterweight ring 61 to rotate in the same direction. Similarly, when the opening of the elastic spiral tube 8 is opposite to the inner wall of the third counterweight ring 63, the mud will drive the third counterweight ring 63 to rotate, and at the same time drive the second counterweight ring 62 and the first counterweight ring 61 to rotate in the same direction.

[0062] The slurry is sprayed out from the elastic spiral tube 8 and falls onto the partition plate 10. Under the pressure of the slurry, the blocking plate 9 overcomes the resistance of the torsion spring and rotates around the hinge shaft, thereby opening the discharge hole, and the slurry flows out from the discharge hole and is finally discharged through the slag discharge pipe 3.

[0063] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A long-distance steep slope tunnel uphill excavation construction method, characterized in that: The following steps are involved: S1, the screw machine body (1) is working, the mud enters the screw machine body (1), and when slag discharge is required, the motor (15) is started, the motor (15) drives the threaded rod (16) to rotate, so that the first sleeve (17) moves in a direction close to the motor (15), and the first sleeve (17) pulls the fan-shaped plate (13) to rotate through the connecting rod (14), so that an opening is formed between the fan-shaped plate (13) and the inner wall of the diverter box (2), and the mud flows out from the opening; S2, when there is too much mud in the screw machine body (1), the mud enters the elastic spiral tube (8) from the screw machine body (1), flows along the elastic spiral tube (8), and is ejected from the other end of the elastic spiral tube (8) and sprayed onto the inner wall of the counterweight ring (6), thereby pushing the corresponding counterweight ring (6) to rotate; S3, when mud enters the elastic spiral tube (8), the impact force of the mud causes the elastic spiral tube (8) to stretch, and the upper end of the elastic spiral tube (8) moves upward along the fixed column (5), so that the upper end opening of the elastic spiral tube (8) corresponds to different counterweight rings (6), thereby causing the different counterweight rings (6) to rotate, and the upper counterweight ring (6) drives the adjacent lower counterweight ring (6) to rotate in the same direction under the action of the one-way bearing; S4, the slurry sprayed out through the elastic spiral tube (8) finally falls on the partition plate (10), and the blocking plate (9) is opened, and falls from the discharge hole, and is finally discharged through the slag discharge mechanism; The screw machine body (1) is connected with a diverter box (2) and a slag discharge pipe (3); a slag discharge mechanism is movably arranged in the slag discharge pipe (3); a buffer mechanism is arranged in the diverter box (2); a partition plate (10) is fixedly arranged between the diverter box (2) and the screw machine body (1), a discharge hole is opened on the partition plate (10), and a blocking plate (9) for blocking the discharge hole is movably arranged on the diverter box (2); the buffer mechanism comprises an elastic spiral tube (8) and a counterweight ring (6); one end of the elastic spiral tube (8) is fixedly passed through the partition plate (10) and is connected with the screw machine body (1); the other end of the elastic spiral tube (8) is longitudinally slidably arranged in the diverter box (2), and a plurality of counterweight rings (6) are rotatably arranged in the diverter box (2), and two adjacent counterweight rings (6) are connected by a one-way bearing; The slag discharge mechanism comprises a driving assembly, a connecting rod (14), and a fan-shaped plate (13); the fan-shaped plates (13) are provided in a plurality, and the plurality of fan-shaped plates (13) are enclosed in a circular plate to cover a slag discharge pipe (3), and the fan-shaped plate (13) is rotatably arranged in the slag discharge pipe (3); one end of the connecting rod (14) is hinged on the driving assembly, and the other end of the connecting rod (14) is hinged to the fan-shaped plate (13); the connecting rod (14) is provided in a plurality, and corresponds to the fan-shaped plates (13) one by one; the lengths of adjacent connecting rods (14) are unequal, and the angles between adjacent connecting rods (14) and the threaded rod (16) are unequal.

2. The long-distance steep slope tunnel uphill excavation construction method according to claim 1 is characterized by: The driving assembly comprises a motor (15), a threaded rod (16), and a first sleeve (17); the motor (15) is fixedly arranged in a slag discharge pipe (3), and the threaded rod (16) is fixedly arranged on a motor shaft of the motor (15); the first sleeve (17) is threadedly matched with the threaded rod (16); one end of the connecting rod (14) is hinged on the first sleeve (17), and the other end of the connecting rod (14) is hinged to the fan-shaped plate (13).

3. The long-distance steep slope tunnel uphill excavation construction method according to claim 2 is characterized by: A first fixing rod (11) and a second fixing rod (12) are fixed in the slag discharge pipe (3); the motor (15) is fixedly mounted on the second fixing rod (12), and the threaded rod (16) is rotatably arranged between the first fixing rod (11) and the second fixing rod (12).

4. The long-distance steep slope tunnel uphill excavation construction method according to claim 3 is characterized by: A second sleeve (18) is fixedly arranged on the first fixing rod (11), and a connecting ring (21) is fixed on the circumferential surface of the second sleeve (18); the sector plate (13) is rotatably connected to the connecting ring (21).

5. The long-distance steep slope tunnel uphill excavation construction method according to claim 1 is characterized by: A fixing column (5) is fixed inside the diverter box (2); and the elastic spiral tube (8) is wound around the fixing column (5).

6. The long-distance steep slope tunnel uphill excavation construction method according to claim 5 is characterized by: Both ends of the elastic spiral tube (8) are fixedly provided with fixing rings (19); one end of the elastic spiral tube (8) communicating with the screw machine body (1) is fixedly connected to the partition plate (10) via the fixing ring (19); one end of the elastic spiral tube (8) in the diversion box (2) is slidably matched with the fixing column (5) via the fixing ring (19).

7. The long-distance steep slope tunnel uphill excavation construction method according to claim 6 is characterized by: The fixing column (5) is provided with a T-shaped sliding groove (20), and the fixing ring (19) is fixed with a T-shaped sliding block which is slidably matched with the T-shaped sliding groove (20).

8. The long-distance steep slope tunnel uphill excavation construction method according to claim 1 is characterized by: The blocking plate (9) is hinged to the inner wall of the shunt box (2) via a hinge shaft, and a torsion spring is provided on the hinge shaft; one end of the torsion spring is fixedly connected to the blocking plate (9), and the other end of the torsion spring is fixedly connected to the inner wall of the shunt box (2).

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