CN117108288A

CN117108288A - Shaft development machine

Info

Publication number: CN117108288A
Application number: CN202311241463.2A
Authority: CN
Inventors: 刘飞香; 彭正阳; 龙斌; 姚满; 欧阳涛; 柯威; 杨楚戈
Original assignee: China Railway Construction Heavy Industry Group Co Ltd; China Railway Construction Corp Ltd CRCC
Current assignee: China Railway Construction Heavy Industry Group Co Ltd; China Railway Construction Corp Ltd CRCC
Priority date: 2023-09-25
Filing date: 2023-09-25
Publication date: 2023-11-24

Abstract

The invention discloses a vertical shaft heading machine, which relates to the technical field of building construction, wherein a frame comprises a fixed part and a rotating part, and the rotating part can rotate along a central shaft of the frame relative to the fixed part; the driving cutterhead mechanism is arranged at the driving end of the rotating part, the driving cutterhead mechanism rotates to realize the driving, the tunnel face formed by the driving cutterhead mechanism in the driving is in a shape with low middle and high periphery, the slag lifting mechanism is driven by the rotating part to realize the circumferential revolution, and the slag lifting mechanism is matched to circularly and automatically convey the slag upwards; the slag is sent to a slag storage bin, the slag storage bin receives the slag conveyed by the slag lifting mechanism, and the slag is transferred to a slag discharging system, and the slag discharging system receives the slag discharged by the slag storage bin and conveys the slag upwards. The invention utilizes revolution of the slag lifting mechanism to match with autorotation to continuously convey the slag soil, and rapidly eliminates the broken stone of the slag soil at the face of the tunnel.

Description

Shaft development machine

Technical Field

The invention relates to the technical field of building construction, in particular to a vertical shaft heading machine.

Background

The vertical shaft is a main channel of underground engineering such as underground mineral exploitation, ventilation of long and large tunnels and the like, and the current vertical shaft cutting method mainly comprises a drilling and blasting method, a drilling method and the like, and vertical shaft construction equipment is a key of vertical shaft construction. Compared with the traditional drilling and blasting method and the traditional drilling method, the full-face vertical shaft heading machine integrates excavation, slag discharging and supporting, is suitable for rapid and efficient construction of a large-depth vertical shaft, but a set of relatively mature full-face vertical shaft heading machine construction equipment and construction method are not formed so far, and one of the greatest difficulties is vertical and efficient slag discharging. Aiming at the performance requirements of the full-face vertical shaft heading machine with strong geological adaptability and high mechanization degree, related researches are carried out by related enterprises and research institutions in China, and particularly a series of exploration is carried out on a cutterhead structure and a muck conveying mode, but a solid theoretical basis is provided for the development of the vertical shaft heading machine although a great breakthrough of the technology is not achieved.

After the cutter head of the vertical shaft heading machine finishes tunneling and crushing, the slag-soil broken stone is lifted upwards by means of a hanging cylinder structure, the slag-soil broken stone is loaded into the hanging cylinder by utilizing a grab bucket to finish the loading process, the whole assembly and lifting process intermittently acts, and the slag-soil broken stone piled on the face of the tunnel cannot be lifted upwards rapidly and timely, so that normal tunneling work is affected.

How to quickly remove the broken stones of the slag at the face is a technical problem to be solved at present for those skilled in the art.

Disclosure of Invention

The invention provides a shaft heading machine, which utilizes revolution of a slag lifting mechanism to continuously convey slag soil in cooperation with autorotation, and rapidly eliminates slag soil broken stone at a face, and the concrete scheme is as follows:

a shaft boring machine, comprising:

the rack comprises a fixed part and a rotating part, wherein the rotating part can rotate along the central shaft of the rack relative to the fixed part;

the tunneling cutterhead mechanism is arranged at the tunneling end of the rotating part and driven by the rotating part to realize rotary tunneling; the section of the tunneling surface excavated by the tunneling cutterhead mechanism is in a V shape with low middle and high periphery;

the slag lifting mechanism is arranged on the rotating part and is driven by the rotating part to realize revolution; the rotating part rotates to convey the dregs excavated by the tunneling cutterhead mechanism upwards;

the slag storage bin is arranged on the fixed part and is used for receiving the slag soil conveyed by the slag lifting mechanism;

the slag discharging system is arranged on the fixing part and is used for receiving slag soil discharged from the slag storage bin and conveying the slag upwards.

Optionally, the slag lifting mechanism comprises a rotating wheel, a slag lifting chain and a slag lifting bucket, wherein the rotating wheel drives the slag lifting chain to circularly move, so that the slag lifting bucket circularly moves to lift the slag soil.

Optionally, an included angle exists between the slag lifting direction of the slag lifting mechanism and a vertical line, and the top end of the slag lifting mechanism is close to the central shaft of the frame.

Optionally, the slag storage bin comprises an inner cylinder and an outer cylinder, the inner cylinder and the outer cylinder form an annular interlayer, the top end of the interlayer is an annular falling port for the slag lifting mechanism to fall, and the bottom end of the interlayer is provided with at least one blanking hopper for discharging;

the top end of the slag lifting mechanism extends into the inner cylinder to discharge slag to the interlayer.

Optionally, the blanking hopper is provided with a shut-off valve for controlling discharging.

Optionally, the slag discharging system comprises two groups of hanging barrels for lifting slag soil, and the two blanking hoppers and the two hanging barrels are in one-to-one correspondence to transfer the slag soil.

Optionally, the slurry pump mechanism further comprises a slurry pump mechanism, wherein the slurry pump mechanism comprises a fixed pipeline, a movable pipeline and a rotary joint, the fixed pipeline is installed on the fixed part, the movable pipeline is installed on the rotary part, and the rotary joint is connected between the fixed pipeline and the top end of the movable pipeline.

Optionally, the device further comprises a muddy water slag discharging system arranged on the fixing part, wherein the muddy water slag discharging system is used for separating slag from water in the slurry conveyed by the slurry pump mechanism, and stone slag slides to the slag discharging system.

Optionally, the system also comprises a front shield tightening system, a rear shield supporting system, a sliding mode lining system, a rear supporting system and a ground supporting system;

the rear matching system comprises a water vapor system, a hydraulic system and an electric system;

the ground supporting system comprises a hole opening and closing system, a cable water pipe extending system, a cable water pipe lower hoisting system, a slag tapping hoisting system, a derrick, an automatic seat hook gangue turning device and a slag chute.

The invention provides a vertical shaft heading machine, wherein a frame comprises a fixed part and a rotating part, and the rotating part can rotate along a central shaft of the frame relative to the fixed part; the driving cutterhead mechanism is arranged at the driving end of the rotating part, the driving cutterhead mechanism rotates to realize the driving, the tunnel face formed by the driving cutterhead mechanism in the driving is in a shape with low middle and high periphery, the slag lifting mechanism is driven by the rotating part to realize the circumferential revolution, and the slag lifting mechanism is matched to circularly and automatically convey the slag upwards; the slag is sent to a slag storage bin, the slag storage bin receives the slag conveyed by the slag lifting mechanism, and the slag is transferred to a slag discharging system, and the slag discharging system receives the slag discharged by the slag storage bin and conveys the slag upwards. The invention utilizes revolution of the slag lifting mechanism to match with autorotation to continuously convey the slag soil, and rapidly eliminates the broken stone of the slag soil at the face of the tunnel.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of the overall structure of a shaft boring machine provided by the invention;

FIG. 2 is a schematic structural view of a slag lifting mechanism;

fig. 3 is a schematic view of a partial structure of a lower part of a shaft boring machine according to the present invention;

fig. 4 is a schematic view of a partial structure of a middle part of a shaft boring machine provided by the invention;

FIG. 5 is a schematic structural view of a slag storage bin;

FIG. 6 is a schematic view of a rotary joint;

fig. 7 is a schematic diagram of a slip-form lining system.

The drawings include:

the device comprises a frame 1, a fixed part 11, a rotating part 12, a tunneling cutterhead mechanism 2, a slag lifting mechanism 3, a rotating wheel 31, a slag lifting chain 32, a slag lifting bucket 33, a slag storage bin 4, an inner barrel 41, an outer barrel 42, a blanking bucket 43, a slag discharging system 5, a slurry pump mechanism 6, a fixed pipeline 61, a movable pipeline 62, a rotating joint 63, a muddy water slag discharging system 7, a front shield supporting system 81, a rear shield supporting system 82, a jumbolter system 83, a sliding mould lining system 84, a sliding mould oil cylinder 841, a supporting rod 842, a rear matching system 85, a water vapor system 851, a hydraulic system 852, an electric system 853, a ground matching system 86, a hole opening and closing system 861, a cable water pipe extension system 862, a cable water pipe lower winch system 863, a slag discharging winch system 864, a derrick 865, an automatic seat hook gangue turning device 866 and a slag chute 867.

Detailed Description

The core of the invention is to provide a shaft heading machine which utilizes revolution of a slag lifting mechanism to be matched with autorotation to continuously convey slag soil and rapidly remove slag soil broken stones at a tunnel face.

In order to make the technical scheme of the present invention better understood by those skilled in the art, the following detailed description of the shaft boring machine of the present invention will be given with reference to the accompanying drawings and the specific embodiments.

The invention provides a shaft heading machine, which comprises a frame 1, a heading cutterhead mechanism 2, a slag lifting mechanism 3, a slag storage bin 4, a slag discharging system 5 and other structures, wherein the frame 1 comprises a fixed part 11 and a rotating part 12, and the rotating part 12 can rotate relative to the fixed part 11 along the central axis of the frame 1; the fixed part 11 is kept fixed, the rotating part 12 rotates relative to the fixed part 11 during tunneling work, and the rotating shaft of the rotating part 12 is in the vertical direction, and the rotation of the rotating part 12 is called revolution, as shown in fig. 1, 3 and 4.

The tunneling cutterhead mechanism 2 is arranged at the tunneling end of the rotating part 12, and the tunneling cutterhead mechanism 2 is arranged at the bottom end of the rotating part 12 in combination with fig. 1, 3 and 4, the tunneling cutterhead mechanism 2 is driven by the rotating part 12 to realize rotary tunneling, and the tunneling cutterhead mechanism 2 synchronously revolves along with the rotating part 12; the section of the tunneling surface excavated by the tunneling cutterhead mechanism 2 is in a V shape with low middle and high periphery, as shown in fig. 1 and 3, the tunneling cutterhead mechanism 2 tunnels downwards, the formed tunneling surface (tunnel face) is in a shape with low center and high periphery, and the excavated muck is gathered to the center at a position with lower center of the tunneling surface; the center of the tunneling surface is a relatively flat surface, and the whole tunneling surface is in a frustum shape.

The slag lifting mechanism 3 is arranged on the rotating part 12, and the slag lifting mechanism 3 is driven by the rotating part 12 to realize revolution; the rotation part 12 rotates to convey the dregs excavated by the tunneling cutterhead mechanism 2 upwards; the rotating part 12 can circularly rotate, the rotating part 12 takes out and digs the muck from the tunneling surface below, and the rotating part 12 conveys the muck upwards through self-circulation rotation and continuously conveys the muck upwards; the slag lifting mechanism 3 revolves along with the rotating part 12, the rotating part 12 can drive the bottom end of the slag lifting mechanism 3 to circumferentially rotate around the vertical rotating shaft, and in the process, the bottom end of the slag lifting mechanism 3 can completely discharge slag gathered at the center of a tunneling surface.

The Chu Zha bin 4 is arranged on the fixed part 11, the slag storage bin 4 does not revolve along with the rotating part 12 during operation, and the circumferential position of the Chu Zha bin 4 is kept fixed; chu Zha bin 4 is used for receiving the dregs that carry sediment mechanism 3 carried, and Chu Zha bin 4 plays the effect of temporarily storing dregs to transfer dregs to slag discharging system 5 through storing sediment bin 4.

The slag discharging system 5 is arranged on the fixing part 11, and the slag discharging system 5 is used for receiving and conveying the slag discharged by the slag storage bin 4 upwards. The slag discharging system 5 does not revolve when in work, the slag storage bin 4 is used as a transfer structure for transferring slag soil, the circumferentially rotating slag lifting mechanism 3 is transferred to the slag storage bin 4, the slag storage bin 4 has a converging effect on the slag soil, and the slag is discharged to the slag discharging system 5; the slag taking structure of the emptied slag lifting mechanism 3 moves downwards again, and the slag taking soil is dug again to be conveyed upwards again when reaching the tunneling surface.

According to the invention, the revolution of the slag lifting mechanism 3 is matched with the rotation of the slag lifting mechanism to continuously convey the slag, so that a tunneling surface can be continuously cleared, and slag and broken stones at the tunnel surface can be quickly cleared.

Referring to fig. 2, the slag lifting mechanism 3 of the present invention includes at least two rotating wheels 31, at least two rotating wheels 31 are respectively located at the top and bottom ends of the slag lifting mechanism 3, and the moving direction of the slag lifting chain 32 is changed by the rotating wheels 31. One of the rotating wheels 31 is a driving wheel and is driven by driving equipment such as a motor, the other rotating wheel 31 is a driven wheel, the periphery of the rotating wheel 31 is provided with meshing teeth, the rotating wheel 31 and the slag lifting chain 32 are mutually matched to realize meshing transmission, and the rotating wheel 31 drives the slag lifting chain 32 to circularly move so that the slag lifting bucket 33 circularly moves to lift slag. The slag lifting chain 32 is of an annular closed chain structure, a plurality of slag lifting buckets 33 are arranged on the slag lifting chain 32 at intervals, the opening direction of the slag lifting buckets 33 is consistent with the movement direction of the slag lifting buckets 33, when the slag lifting buckets 33 reach the lowest position, the slag is lifted up, the opening of the slag lifting buckets 33 faces upwards after the slag is lifted up, the slag is conveyed upwards through the slag lifting buckets 33, and the slag lifting chain 32 drives the slag lifting buckets 33 to rotate in a circulating way; when the slag lifting bucket 33 passes through the highest point and changes the direction to move downwards, the opening direction of the slag lifting bucket 33 is turned downwards, and slag soil in the slag lifting bucket 33 is discharged and discharged to the slag storage bin 4; the empty slag lifting bucket 33 continues to move downwards, restarting the next cycle.

Referring to fig. 1 and 3, an included angle exists between the slag lifting direction of the slag lifting mechanism 3 and a vertical line, and the top end of the slag lifting mechanism 3 is close to the central shaft of the frame 1. The slag lifting direction of the slag lifting mechanism 3 is not completely vertical, the slag lifting direction of the slag lifting mechanism 3 has a certain inclination angle, in this form, the revolution path of the slag lifting mechanism 3 forms a conical surface, the movement radius of the top end of the slag lifting mechanism 3 is small, and the movement radius of the bottom end of the slag lifting mechanism 3 is large. The bottom of the slag lifting mechanism 3 can cover a larger area, and the movement radius of the top of the slag lifting mechanism 3 is large, so that the space occupation can be reduced.

Referring to fig. 5, the slag storage bin 4 of the invention comprises an inner cylinder 41 and an outer cylinder 42, wherein the inner cylinder 41 and the outer cylinder 42 form an annular interlayer, the top end of the interlayer is an annular falling port for blanking of the slag lifting mechanism 3, and in the revolution process of the slag lifting mechanism 3, no matter the slag lifting bucket 33 of the slag lifting mechanism 3 rotates to any angle, the slag lifting bucket can fall into the annular falling port at the top end of the slag storage bin 4; the dregs falling into the interlayer of the dreg storage bin 4 slide downwards under the guidance of the interlayer of the dreg storage bin 4. At least one blanking hopper 43 for discharging is arranged at the bottom end of the interlayer, and dregs are discharged from the blanking hopper 43 to the dreg storage bin 4 and fall to the dreg discharging system 5 from the blanking hopper 43.

The inner cylinder 41 forms an annular channel, the inner cylinder 41 is penetrated up and down, the slag lifting mechanism 3 extends into the channel formed by the inner cylinder 41 from bottom to top, and the top end of the slag lifting mechanism 3 extends into the inner cylinder 41 to discharge slag to the interlayer. In the revolution process of the slag lifting mechanism 3, the slag lifting mechanism 3 rotates for 360 degrees, and the slag continuously falls into the interlayer of the slag storage bin 4 from different circumferential angles.

Specifically, a shut-off valve for controlling discharge is provided in the discharge hopper 43, and intermittent discharge is realized by controlling whether discharge is performed or not by the shut-off valve.

The slag discharging system 5 comprises two groups of hanging barrels for lifting the slag soil, and the two blanking hoppers 43 and the two hanging barrels are in one-to-one correspondence to transfer the slag soil. Fig. 1 and 3 show a hanging cylinder, the hanging cylinder moves vertically under the drive of a lifting mechanism, and when the hanging cylinder is full of dregs, the dregs are output to the ground.

On the basis of any one of the above technical solutions and the combination of the above technical solutions, the shaft boring machine of the present invention further includes a slurry pump mechanism 6, and, with reference to fig. 1, 3 and 4, the slurry pump mechanism 6 includes a fixed pipe 61, a movable pipe 62 and a rotary joint 63; the fixed pipe 61 is installed at the fixed portion 11, the movable pipe 62 is installed at the rotating portion 12, the rotary joint 63 is connected between the fixed pipe 61 and the bottom end and the top end of the movable pipe 62, the upper end of the rotary joint 63 is connected to the fixed pipe 61 and the bottom end, and the lower end of the rotary joint 63 is connected to the top end of the movable pipe 62. The movable pipe 62 can revolve synchronously with the rotating part 12, and the fixed pipe 61 is kept stationary, and the rotational connection is achieved by the rotational joint 63. The bottom end of the movable pipeline 62 is provided with a slurry inlet, the slurry inlet is positioned on the V-shaped tunneling cutterhead mechanism 2, when the tunnel face encounters water, the dregs at the tunneling face form slurry, and the slurry is pumped upwards through the slurry inlet at the bottom end of the movable pipeline 62.

Still further, the shaft heading machine of the invention further comprises a muddy water slag discharging system 7 arranged on the fixing part 11, the muddy water slag discharging system 7 is kept fixed, the muddy water slag discharging system 7 is used for separating slag and water in the mud conveyed by the mud pump mechanism 6, and stone slag slides to the slag discharging system 5.

When the face encounters water gushing, the system is switched to a muddy water slag discharging mode, slag is pumped to a muddy water slag discharging system 7 by a slurry pump mechanism 6, the muddy water slag discharging system 7 separates slag from water, stone slag slides to a slag discharging system 5, and the stone slag is transported to the ground through a bucket by the slag discharging system 5.

The shaft boring machine of the invention also comprises a front shield supporting system 81, a rear shield supporting system 82, a slip form lining system 84, a rear matching system 85 and a ground matching system 86. The front shield is internally provided with a front shield supporting system 81, the front shield supporting system 81 is connected with the front shield through a pushing oil cylinder, the front shield is supported tightly on the wall of the hole, and the pushing oil cylinder pushes the front shield, so that the V-shaped tunneling cutterhead mechanism 2 excavates rocks.

After the tunneling cutterhead mechanism 2 breaks rocks, the rocks slide to the lowest position of the face due to the action of gravity, the rocks are scooped up by the slag lifting bucket 33, lifted to the slag storage bin 4 by the slag lifting mechanism 3, slide to the slag discharging system 5 due to the action of gravity, and then transported to the ground by the slag discharging system 5 by using the hanging barrel.

The roof bolter system 83 is used for primary support after excavation; the jumbolter system 83 may perform the lifting operation via the jumbolter lift cylinder and guide post.

Referring to fig. 7, the slip-form lining system 84 is fixed on the support rod 842 through the slip-form cylinder 841, the support rod 842 is fixed in the poured concrete and can extend downwards, the slip-form lining system 84 can move downwards along with the slip-form cylinder 841, and can support in time after the anchor rod drilling machine system is used for breaking a stratum, and can be optionally not supported in stabilizing the stratum, so that lining convenience and well forming speed are improved. The sliding mode lining system 84 is fixed on the supporting rod 842 through the sliding mode oil cylinder 841, the supporting rod 842 is fixed in the poured concrete and can extend downwards, the sliding mode lining system can move downwards along with the sliding mode oil cylinder 841, the sliding mode lining system can support in time when a stratum is broken, the stratum can be optionally not supported when the stratum is stabilized, and lining convenience and well forming speed are improved.

The shaft heading machine is provided with two sets of support systems of a jumbolter system 83 and a slip form lining system 84, which complement each other and improve the lining efficiency.

The rear mating system 85 includes a water vapor system 851, a hydraulic system 852, an electrical system 853; the water vapor system 851, hydraulic system 852, electrical system 853 provide the necessary cooling, power and control capabilities for the equipment.

The ground matching system 86 comprises an opening and closing system 861, a cable water pipe extension system 862, a cable water pipe lower hoisting system 863, a slag hoist system 864, a derrick 865, an automatic seat hook gangue turning device 866 and a slag chute 867. The opening and closing system 861 is used for opening and closing a wellhead, the cable water pipe extension system 862 and the cable water pipe lower hoisting system 863 are used for extending lower pipelines, the slag hoist system 864, the automatic seat hook gangue turning device 866 and the slag chute 867 are matched with the bucket slag hoist system to transport slag to the ground, and the derrick 865 is used for supporting related equipment.

By applying the technical scheme of the invention, the method has the following effects:

(1) The invention has high integral mechanization degree, integrates the functions of rock breaking, slag discharging, supporting, ventilation and drainage, fire fighting and the like, can realize the mechanized and integrated construction of the vertical shaft, has seamless connection of each working procedure and high construction efficiency, and can be used for projects such as mine or tunnel ventilation shafts, water and electricity voltage regulating shafts, national defense vertical shafts and the like.

(2) The V-shaped cutterhead adopted by the invention can be used for full-section excavation of the vertical shaft, the crushed rock slag slides to the lowest position of the face under the action of gravity, and the transmission mechanism is not required to drive the slag soil to gather to the lowest position of the cutterhead, so that the reliability is high. When the face is in a water-free or water-less state, the bucket and the vertical slag lifting system are used for discharging rock slag from the face; when the face meets water surge, the system is switched to a mud water pump system, slag water is pumped away from the face, the slag discharging efficiency is high, and the geological adaptability is strong.

(3) The invention adopts two sets of support systems, namely the jumbolter system and the sliding mode lining system, has large one-time lining support length, high support efficiency and strong geological adaptability, meets the support requirements of shaft tunneling engineering of soft soil, gravel, soft rock and hard rock stratum,

the previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A shaft boring machine, comprising:

a frame (1), the frame (1) comprising a fixed portion (11) and a rotating portion (12), the rotating portion (12) being rotatable relative to the fixed portion (11) along a central axis of the frame (1);

the tunneling cutterhead mechanism (2) is arranged at the tunneling end of the rotating part (12), and the tunneling cutterhead mechanism (2) is driven by the rotating part (12) to realize rotary tunneling; the section of the tunneling surface excavated by the tunneling cutterhead mechanism (2) is in a V shape with low middle and high periphery;

the slag lifting mechanism (3) is arranged on the rotating part (12), and the slag lifting mechanism (3) is driven by the rotating part (12) to realize revolution; the rotating part (12) rotates to convey the dregs excavated by the tunneling cutterhead mechanism (2) upwards;

the slag storage bin (4) is arranged on the fixing part (11), and the slag storage bin (4) is used for receiving slag soil conveyed by the slag lifting mechanism (3);

the slag discharging system (5) is arranged on the fixing part (11), and the slag discharging system (5) is used for receiving slag soil discharged by the slag storage bin (4) and conveying the slag upwards.

2. The shaft boring machine according to claim 1, characterized in that the slag lifting mechanism (3) comprises a rotating wheel (31), a slag lifting chain (32) and a slag lifting bucket (33), wherein the rotating wheel (31) drives the slag lifting chain (32) to circularly move so that the slag lifting bucket (33) circularly moves to lift slag soil.

3. The shaft boring machine according to claim 2, characterized in that the slag lifting direction of the slag lifting mechanism (3) forms an included angle with a vertical line, and the top end of the slag lifting mechanism (3) is close to the central axis of the frame (1).

4. A shaft boring machine according to claim 3, characterized in that the slag storage bin (4) comprises an inner cylinder (41) and an outer cylinder (42), the inner cylinder (41) and the outer cylinder (42) form an annular interlayer, the top end of the interlayer is an annular falling port for the slag lifting mechanism (3) to fall off, and at least one blanking hopper (43) for discharging is arranged at the bottom end of the interlayer;

the top end of the slag lifting mechanism (3) extends into the inner cylinder (41) to discharge slag to the interlayer.

5. Shaft boring machine according to claim 4, characterized in that the blanking hopper (43) is provided with a shut-off valve for controlling the discharge.

6. Shaft boring machine according to claim 5, characterized in that the slag tapping system (5) comprises two sets of lifting drums for lifting the slag, two of the blanking hoppers (43) and two of the lifting drums being in one-to-one correspondence for transferring the slag.

7. The shaft boring machine according to any one of claims 1 to 6, further comprising a mud pump mechanism (6), the mud pump mechanism (6) including a fixed pipe (61), a movable pipe (62), and a rotary joint (63), the fixed pipe (61) being mounted to the fixed part (11), the movable pipe (62) being mounted to the rotary part (12), the rotary joint (63) being connected between the fixed pipe (61) and a bottom end and a top end of the movable pipe (62).

8. The shaft boring machine according to claim 7, characterized by further comprising a muddy water slag tapping system (7) provided to the fixing part (11), the muddy water slag tapping system (7) being used for separating slag from water in the mud conveyed by the mud pump mechanism (6), and stone slag sliding down to the slag tapping system (5).

9. The shaft boring machine of claim 7, further comprising a front shield bracing system (81), a rear shield support system (82), a slip form lining system (84), a rear mating system (85), a ground mating system (86);

the rear matching system (85) comprises a water vapor system (851), a hydraulic system (852) and an electric system (853);

the ground supporting system (86) comprises a hole opening and closing system (861), a cable water pipe extending system (862), a cable water pipe lower hoisting system (863), a slag tapping hoisting system (864), a derrick (865), an automatic seat hook gangue turning device (866) and a slag chute (867).