CN117803398A - Shaft tunneling system - Google Patents

Abstract

The invention provides a shaft tunneling system, which comprises: the plurality of support columns penetrate through the stratum where the tunneling section is located along the extending direction of the vertical shaft, at least one tunneling platform capable of moving along the length direction of the tunneling platform is formed among the plurality of support columns, the tunneling platform is provided with a sliding track, and the extending direction of the sliding track is parallel to the outer contour of the vertical shaft; the first heading machine is movably connected to the sliding track, and a first excavation surface formed after the first heading machine moves along the sliding track can cover at least part of the tunneling section. The invention solves the problems of complex construction device, large section excavation limit, low construction efficiency and the like when the traditional shaft tunneling equipment faces to the construction of a large section shaft.

Description

Shaft tunneling system

Technical Field

The invention relates to the technical field of shaft tunneling equipment, in particular to a shaft tunneling system.

Background

Along with popularization of mechanical construction of the vertical shaft, development and application of the vertical shaft heading machine are increasingly emphasized and popularized. At present, shaft engineering projects are more and more, tunneling sections are different in size, however, a shaft drilling machine for shaft construction is mainly applied to shaft construction operation with small sections, the device applicability is limited, the device self-capacity is limited, obvious disadvantages and defects exist in large-section shaft construction, and even normal use requirements cannot be met.

Disclosure of Invention

The invention aims to provide a shaft tunneling system which solves the problems of complex construction device, large section excavation limit, low construction efficiency and the like existing in the conventional shaft tunneling equipment when a large section shaft is constructed.

The invention provides a shaft tunneling system, which comprises:

the plurality of support columns penetrate through the stratum where the tunneling section is located along the extending direction of the vertical shaft, at least one tunneling platform capable of moving along the length direction of the tunneling platform is formed among the plurality of support columns, and the tunneling platform is provided with a sliding track;

the first heading machine is movably connected to the sliding track, and a first excavation surface formed after the first heading machine moves along the sliding track can cover at least part of the tunneling section.

In a preferred embodiment of the invention, the plurality of support columns comprise at least one circumferential support column group, the plurality of support columns in each circumferential support column group are arranged at intervals along the outer contour direction of the shaft, the tunneling platform comprises at least one sliding rail, the sliding rail is connected to the circumferential support column group, and the extending direction of the sliding rail is parallel to the outer contour direction of the shaft.

In a preferred embodiment of the invention, the circumferential support column groups are arranged in the stratum at intervals from the center of the shaft towards the edge of the shaft, and each circumferential support column group is provided with one sliding track.

In a preferred embodiment of the present invention, the plurality of first heading machines are provided, and at least one first heading machine is provided on the inner side of the sliding rail and/or on the outer side of the sliding rail.

In a preferred embodiment of the present invention, a third heading machine is connected between every two adjacent sliding rails; or, in the two adjacent sliding rails, at least one first heading machine is arranged on the inner side of the sliding rail positioned on the outer side and the outer side of the sliding rail positioned on the inner side.

In a preferred embodiment of the present invention, the third heading machine includes a movable beam, two ends of the movable beam are movably connected to two adjacent sliding rails, a third excavation arm controlled by an oil cylinder is connected to the movable beam, and an excavation tool is connected to an end of the third excavation arm.

In a preferred embodiment of the present invention, the plurality of support columns further includes a center support column disposed at the center of the shaft, and the center support column is connected with a second heading machine capable of moving along the length direction and rotating around the center support column, and the first excavation surface formed after the first heading machine moves along the sliding track and the second excavation surface formed after the second heading machine moves along the center support column form the tunneling section together.

In a preferred embodiment of the invention, the central support column is provided with a central annular rail which can move along the length direction of the central support column, and the second heading machine is movably connected to the central annular rail.

In a preferred embodiment of the invention, a lifting mechanism is connected to the tops of the support columns, and the lifting mechanism is connected to the tunneling platform and the central ring rail to drive the tunneling platform and the central ring rail to move along the length direction of the support columns.

In a preferred embodiment of the present invention, the first heading machine includes a first moving platform capable of moving along the sliding track, a first digging arm controlled by an oil cylinder is rotatably connected to the first moving platform, and a digging cutter is connected to an end of the first digging arm.

In a preferred embodiment of the present invention, the second heading machine includes a second moving platform capable of moving along the central ring rail, a second excavation arm controlled by an oil cylinder is rotatably connected to the second moving platform, and a working module is connected to an end of the second excavation arm.

In a preferred embodiment of the present invention, the top of the support column is higher than the ground, and the top of the support column is provided with a working platform; the bottom of support column is equipped with the reinforcement base, the diameter of reinforcement base is greater than the diameter of support column.

Compared with the prior art, the technical scheme provided by the invention has the following characteristics and advantages:

1. the vertical shaft tunneling system is simple in device, and the excavation of vertical shaft sections with different sizes and different shapes is realized by increasing the number of the supporting columns and the tunneling machines.

2. The vertical shaft tunneling system is provided with different devices, and can be suitable for complex strata such as different soil layers, strata, rich water and the like.

3. According to the shaft tunneling system, a plurality of points are tunneled simultaneously, a large-section excavation range is decomposed, and efficient construction is achieved.

4. According to the shaft tunneling system, the working platform is arranged at the top of the supporting column, so that the construction occupied area is reduced, and the aboveground working space can be fully utilized.

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. In the drawings:

the drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, proportional sizes, and the like of the respective components in the drawings are merely illustrative for aiding in understanding the present invention, and are not particularly limited. Those skilled in the art with access to the teachings of the present invention can select a variety of possible shapes and scale sizes to practice the present invention as the case may be.

FIG. 1 is a schematic top view of a shaft development system of the present invention in a profile section;

FIG. 2 is a schematic top view of a circular section of a shaft development system of the present invention;

FIG. 3 is a schematic cross-sectional view of the shaft development system of the present invention;

FIG. 4 is a schematic top view of another embodiment of a shaft development system according to the present invention;

FIG. 5 is a schematic view of a first heading machine according to the present disclosure;

FIG. 6 is a schematic structural view of a third heading machine according to the present disclosure;

FIG. 7 is a schematic cross-sectional view of the support post of the present invention;

FIG. 8 is a schematic cross-sectional view of the system for shaft boring of the present invention;

FIG. 9 is a schematic cross-sectional view of the underwater excavation of the shaft excavation system of the present invention;

FIG. 10 is a schematic cross-sectional view of a shaft development system according to the present invention;

FIG. 11 is a schematic cross-sectional view of the recovery and bottom closure of the shaft development system of the present invention;

fig. 12 is a schematic cross-sectional view of a shaft construction completion;

fig. 13 is a schematic cross-sectional view of an operating platform on a shaft development system support column according to the present invention.

Reference numerals illustrate:

10. a support column; 11. a circumferential support column group; 12. a central support column; 13. reinforcing the base;

20. a sliding rail; 21. a central annular rail;

30. a first heading machine; 31. A first mobile platform; 32. A first digging arm;

40. a second heading machine; 41. A second mobile platform; 42. A second excavation arm;

50. a third heading machine; 51. A movable cross beam; 52. A third excavation arm;

60. an operation platform; 61. a lifting mechanism; 62. an oil cylinder; 63. a pipe section;

A. tunneling a section; B. a first digging surface; C. a second digging surface.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, shall fall within the scope of the invention.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 12, the present invention provides a shaft boring system including a plurality of support columns 10 and a first boring machine 30; the plurality of support columns 10 penetrate through the stratum where the tunneling section A is located along the extending direction of the vertical shaft, at least one tunneling platform capable of moving along the length direction of the tunneling platform is formed among the plurality of support columns 10, the tunneling platform is provided with a sliding track 20, and the extending direction of the sliding track 20 is parallel to the outer contour of the vertical shaft; first heading machine 30 is movably coupled to slide rail 20 such that a first digging surface B formed by movement of first heading machine 30 along slide rail 20 is capable of covering at least a portion of a tunneling section a.

According to the shaft tunneling system, the positions of the support columns 10 can be reasonably set according to the shape of the tunneling section A of the shaft, so that a sliding track 20 parallel to the outer contour of the shaft is formed on the section to be tunneled; the excavation of the excavation face a is achieved by a first heading machine 30 movably arranged on the slide rail 20. According to the tunneling platform, the support is realized through the support columns 10 which are arranged in the stratum where the tunneling section A is located in advance, so that on one hand, the excavation of shafts with different cross sections can be conveniently realized, and on the other hand, the excavation of shafts with super-large cross sections can be realized.

Specifically, as shown in fig. 1 to 3, the shaft driving system according to the present invention includes a support column 10 that is pre-installed in a ground and a driving platform that is installed on the support column 10. Before the tunneling operation, the penetrating position of the support column 10 is determined according to the shape of the tunneling section a of the shaft, and the number and positions of the support column 10 can be determined according to the actual engineering requirements, which are not particularly limited herein. On the one hand, the support column 10 may be a prefabricated shaped long rod-shaped member, such as a steel pipe, etc., and the shaped support column 10 is penetrated in a stratum to be tunneled; alternatively, holes may be drilled in advance in the ground layer, and then the support columns 10 may be cast into the drilled holes, for example, the support columns 10 may be cast from reinforced concrete. The manner of penetrating the support column 10 into the ground is a conventional construction method in the art, and will not be described in detail herein.

The tunneling platform is connected among a plurality of support columns 10, the support columns 10 provide support for the tunneling platform, and the support platform can move along the length direction of the support columns 10 (the tunneling direction of a vertical shaft); the overall shape of the support platform may be adapted to the shape of the driving section a of the shaft, for example, may be circular, elliptical, square, etc., and is not particularly limited herein. The tunneling platform is provided with a sliding rail 20 parallel to the outer contour of the vertical shaft, namely the extending direction of the sliding rail 20 is the same as the extending direction of the outer contour of the vertical shaft; in the embodiment shown in fig. 1, the sliding track 20 has a "capsule-like" shape adapted to the driving section a of the shaft, and in the embodiment shown in fig. 2, the sliding track 20 has a circular ring-like shape adapted to the driving section a of the shaft.

The slide rail 20 is connected with a first heading machine 30, and the first heading machine 30 realizes the excavation of a shaft, and can move along the extending direction of the slide rail 20. During a particular operation, first heading machine 30 is moved one revolution along slide rail 20 to form a first digging surface B that can at least partially cover a heading section a. In the embodiment shown in fig. 1, the first excavation face B formed by the first heading machine 30 on both sides of the slide rail 20 making one round can cover the entire tunneling section a; in the embodiment shown in fig. 2, the first excavation face B formed by the first heading machine 30 on both sides of the slide rail 20 making one round can cover a part of the tunneling section a.

The construction of some preferred embodiments of the shaft development system according to the invention will be further described below.

According to one embodiment of the present invention, as shown in fig. 1 and 2, the plurality of support columns 10 includes at least one circumferential support column group 11, and the plurality of support columns 10 in each circumferential support column group 11 are arranged at intervals along the outer contour direction of the shaft, and the tunneling platform includes at least one sliding rail 20, and the sliding rail 20 is connected to the circumferential support column group 11.

In this embodiment, the distribution positions of the support columns 10 may be designed according to the shape of the outer contour of the shaft, a closed curve parallel to the outer contour of the shaft is selected on the tunneling section a of the shaft, and then the penetrating positions of the plurality of support columns 10 are uniformly selected on the closed curve; through the design of the penetrating position of the support column 10, the distribution position of the support column is adapted to the shape of a vertical shaft, and the installation of a tunneling platform and a sliding rail 20 connected to the support column 10 is facilitated.

Specifically, in the embodiment shown in fig. 1, a plurality of support columns 10 are arranged at intervals along the extending direction of the outer contour of the "capsule" of the shaft, so as to form a group of circumferential support column groups 11, a tunneling platform in the shape of a "capsule" is formed on the group of circumferential support column groups 11, and a sliding rail 20 parallel to the outer contour of the shaft is arranged on the tunneling platform, that is, the sliding rails 20 connected between every two adjacent support columns 10 are connected end to form a complete sliding rail 20. The slip track 20 provided by the ripping platform may be of unitary construction; of course, for convenience of transportation, the sliding rail 20 may be in a split structure and formed by splicing a plurality of rail short sections.

Further, as shown in fig. 4, the circumferential support column groups 11 are multiple groups, and are arranged in the stratum at intervals from the center of the shaft toward the edge of the shaft, and a sliding track 20 is arranged in each circumferential support column group 11.

The excavation diameter of a shaft tunneling system can be enlarged by arranging a plurality of groups of circumferential support column groups 11, so that the excavation of a shaft with an ultra-large section is realized; since the circumferential direction of the development platform is supported by the plurality of support columns 10, the stability of the structure can be ensured even for a development platform of a large size.

According to one embodiment of the present invention, as shown in fig. 1 to 3, there are a plurality of first heading machines 30, and at least one first heading machine 30 is provided on the inner side of the slide rail 20 and/or on the outer side of the slide rail 20.

The first heading machine 30 is arranged on the inner side and the outer side of the sliding track 20, and excavation on the two sides of the sliding track 20 is realized at the same time, so that the excavation efficiency of a shaft heading system is improved; in order to further improve the working efficiency, a plurality of first heading machines 30 may be provided on the same side of the slide rail 20, and the plurality of first heading machines 30 may excavate the inside or the outside of the slide rail 20 at the same time.

Further, as shown in fig. 4, in the present embodiment, a plurality of sliding rails 20 are disposed on the plurality of sets of circumferential support column sets 11, and a third heading machine 50 is connected between every two adjacent sliding rails 20; the two ends of the third heading machine 50 are respectively and slidably connected to the two adjacent sliding rails 20, and the excavation operation of the whole annular space can be realized only by one third heading machine 50 between the two adjacent sliding rails 20, so that the number of the first heading machines 30 arranged on the sliding rails 20 is reduced.

Of course, in the embodiment shown in fig. 4, the arrangement of the first heading machine 30 on the plurality of sliding rails 20 may also adopt the structure shown in fig. 2, that is, the third heading machine 50 is not provided, but at least one first heading machine 30 is provided on the inner side of the sliding rail 20 located on the outer side and the outer side of the sliding rail 20 located on the inner side in every two adjacent sliding rails 20.

According to one embodiment of the present invention, as shown in fig. 2 to 4, the plurality of support columns 10 further includes a center support column 12 provided at the center of the shaft, and the center support column 12 is connected with a second heading machine 40 movable in the length direction thereof and rotatable therearound, and the first excavation face B formed by the movement of the first heading machine 30 along the slide rail 20 and the second excavation face C formed by the movement of the second heading machine 40 along the center support column 12 together constitute a tunneling section a.

Through setting up at the center of shaft with first entry driving machine 30 matched with second entry driving machine 40, guarantee that the excavation face of entry driving machine on the shaft tunneling system can cover whole tunneling section A, also can avoid simultaneously the inboard first entry driving machine 30's of slip track 20 the exhibition arm overlength, and then lead to the lower problem of operating efficiency.

Specifically, as shown in fig. 3, a central support column 12 is inserted in advance at the central position of the shaft, a central circular rail 21 which can move along the length direction of the central support column 12 is provided on the central support column 12, and a second heading machine 40 is movably connected to the central circular rail 21. In the embodiment shown in fig. 2, the circular digging surface formed after the second heading machine 40 makes one turn around the center circular rail 21 is connected with the circular digging surface formed after the first heading machine 30 on the inner side of the sliding rail 20 makes one turn around, so as to implement the digging of the center position of the shaft.

Preferably, since the center ring rail 21 is supported by only one center support column 12, the diameter of the center support column 12 is larger than the diameter of the support columns 10 in the circumferential support column group 11 in order to secure the stability of the operation of the second heading machine 40.

According to one embodiment of the present invention, as shown in fig. 5, the first heading machine 30 includes a first movable platform 31 movable along the sliding track 20, a first digging arm 32 controlled by an oil cylinder 62 is rotatably connected to the first movable platform 31, and a digging cutter is connected to an end of the first digging arm 32.

The first excavating arm 32 is capable of swinging under the drive of the oil cylinder 62, thereby enabling the excavating tool to move in the radial direction of the shaft, thereby increasing the radial excavating range of the first heading machine 30. The excavation tool connected to the end of the first excavation arm 32 may be selected according to the actual working environment, and may be replaced during the working process due to the change of the stratum.

According to one embodiment of the present invention, as shown in fig. 3, the second heading machine 40 includes a second moving platform 41 capable of moving along the central ring rail 21, a second digging arm 42 controlled by an oil cylinder 62 is rotatably connected to the second moving platform 41, and a working module is connected to the end of the second digging arm 42.

The second excavating arm 42 is capable of swinging under the drive of the oil cylinder 62, thereby enabling the work module to move in the radial direction of the shaft, thereby increasing the radial excavating range of the second heading machine 40. The specific structure of the operation module can be determined according to actual operation requirements, and for example, a drilling machine, a cracking machine, a scrubbing machine, a bucket and other construction operation modules can be selected.

According to one embodiment of the present invention, as shown in fig. 6, the third heading machine 50 includes a movable cross member 51, both ends of the movable cross member 51 are movably connected to the adjacent two slide rails 20, a third excavation arm 52 controlled by an oil cylinder 62 is connected to the movable cross member 51, and an excavation tool is connected to the end of the third excavation arm 52.

The third excavating arm 52 can swing under the drive of the oil cylinder 62, so that the excavating tool can move along the radial direction of the shaft, and the radial excavating range of the third heading machine 50 is increased. The excavation tool connected to the end of the third excavation arm 52 can be selected according to the actual working environment, and can be replaced during the working process due to the change of the stratum.

According to one embodiment of the present invention, as shown in fig. 8, a lifting mechanism 61 is connected to the top of the plurality of support columns 10, and the lifting mechanism 61 is connected to the tunneling platform and the center ring rail 21 to drive both to move along the length direction of the support columns 10. In the embodiment, the lowering and lifting of the tunneling platform and the central ring rail 21 are realized by a mode of driving a steel wire rope by a motor; of course, in other embodiments of the present invention, the lowering and lifting of the ripping platform and the center ring rail 21 may be accomplished in other ways, and is not specifically limited herein.

According to one embodiment of the present invention, as shown in fig. 3, the top of the support column 10 is higher than the ground, the bottom of the support column 10 is provided with a reinforcing base 13, and the diameter of the reinforcing base 13 is larger than that of the support column 10. The top of the support column 10 is higher than the ground, so that the installation of a tunneling platform and a center ring rail 21 is facilitated when a vertical shaft tunneling system starts; the reinforcement base 13 is used for increasing stability of the support column 10, and preventing the support column 10 from tilting during tunneling operation of the shaft tunneling system, thereby causing damage to equipment.

As shown in fig. 9, the shaft tunneling system of the invention can also excavate a water-rich stratum, and slurry can be injected into the shaft to form internal and external water pressure balance when the water-rich stratum performs shaft tunneling operation, so that the tunneling machine performs underwater operation.

As shown in fig. 13, the top of the support column 10 is provided with a working platform 60, and the working platform 60 is provided with shaft tunneling system supporting facilities such as hydraulic, electric and control rooms, etc., so that the working space on the well is fully utilized.

As shown in fig. 3 and fig. 7 to fig. 13, the specific operation process of the shaft tunneling system according to the present invention is as follows:

as shown in fig. 7, a plurality of support columns 10 which are arranged at intervals along the outer contour direction of the vertical shaft are penetrated in advance in the stratum where the tunneling section a is located; according to the outer contour of the vertical shaft and actual operation requirements, a group of circumferential support column groups 11 (shown in fig. 1) can be penetrated in the stratum of the tunneling section A, a plurality of groups of circumferential support column groups 11 (shown in fig. 4) can be penetrated, and a center support column 12 (shown in fig. 2 and 4) can be penetrated in the center of the vertical shaft.

As shown in fig. 3, a sliding rail 20 which can move along the length direction thereof and is parallel to the outer contour of the shaft is connected to the circumferential support column group 11, a first heading machine 30 which can move along the extension direction thereof is connected to both sides of the sliding rail 20, a center ring rail 21 which can move along the length direction thereof is connected to the center support column 12, a second heading machine 40 which can move along the extension direction thereof is connected to the center ring rail 21, the sliding rail 20 and the center ring rail 21 realize lowering and lifting through a lifting mechanism 61 arranged at the top of the support column 10, and the shaft heading system is installed.

As shown in fig. 8, the first heading machine 30 and the second heading machine 40 are started, and the sliding track 20 and the central ring track 21 are gradually lowered by a lifting mechanism 61 connected with the sliding track 20 and the central ring track 21 to realize the layer-by-layer excavation of the shaft; in the process of shaft tunneling, a shaft formed by supporting segments is arranged on a formed shaft wall so as to support the shaft wall.

As shown in fig. 11, when the tunneling operation is completed, the slide rail 20 and the center ring rail 21 are lifted out of the shaft by the lift mechanism 61, and the shaft is simultaneously subjected to the cleaning and bottom closing operation. After the bottom sealing is completed, the support column 10 is removed, and the construction of the shaft is completed, as shown in fig. 12.

The process shown in fig. 9 to 12 is substantially the same as the above process except that slurry is injected into the shaft to form internal and external water pressure balance during the shaft excavation process of the water-rich formation, and the entire tunneling process is performed under water.

The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims (12)

1. A shaft drive system, comprising:

the plurality of support columns (10) penetrate through the stratum where the tunneling section (A) is located along the extending direction of the vertical shaft, at least one tunneling platform capable of moving along the length direction of the support columns (10) is formed between the support columns, and the tunneling platform is provided with a sliding track (20);

-a first heading machine (30) movably connected to said sliding track (20), said first heading machine (30) being capable of covering at least part of said heading section (a) by a first digging surface (B) formed after movement along said sliding track (20).

2. The shaft boring system according to claim 1, characterized in that a plurality of the support columns (10) comprises at least one circumferential support column group (11), the plurality of support columns (10) in each circumferential support column group (11) being arranged at intervals in the direction of the outer contour of the shaft, the boring platform comprising at least one slide rail (20), the slide rail (20) being connected to the circumferential support column group (11), the slide rail (20) extending in a direction parallel to the outer contour of the shaft.

3. A shaft boring system according to claim 2, characterised in that the circumferential support column groups (11) are arranged in the formation at intervals from the centre of the shaft towards the edges thereof, one of the sliding tracks (20) being provided in each of the circumferential support column groups (11).

4. A shaft boring system according to claim 2 or 3, characterised in that the first boring machine (30) is a plurality, at least one first boring machine (30) being provided on the inside of the slide rail (20) and/or on the outside of the slide rail (20).

5. A shaft boring system according to claim 3, characterised in that a third boring machine (50) is connected between two adjacent slide tracks (20); or, in the sliding rails (20) adjacent to each other, at least one first heading machine (30) is disposed on the inner side of the sliding rail (20) located on the outer side and on the outer side of the sliding rail (20) located on the inner side.

6. The shaft boring system according to claim 5, characterized in that the third boring machine (50) comprises a movable cross member (51), both ends of the movable cross member (51) are movably connected to the adjacent two slide rails (20), a third excavation arm (52) controlled by an oil cylinder (62) is connected to the movable cross member (51), and an excavation tool is connected to an end of the third excavation arm (52).

7. A shaft boring system according to claim 1 or 3, characterised in that a plurality of the support columns (10) further comprise a central support column (12) provided in the centre of the shaft, the central support column (12) being connected to a second boring machine (40) movable in the longitudinal direction thereof and rotatable therearound, the first boring machine (30) being movable along the sliding track (20) to form the first boring surface (B), and the second boring machine (40) being movable along the central support column (12) to form the boring section (a).

8. The shaft boring system according to claim 7, characterized in that the center support column (12) is provided with a center endless track (21) movable in the longitudinal direction thereof, and the second boring machine (40) is movably connected to the center endless track (21).

9. The shaft boring system according to claim 8, characterized in that a lifting mechanism (61) is connected to the tops of the plurality of support columns (10), the lifting mechanism (61) being connected to the boring platform and the center endless track (21) to drive both to move along the length direction of the support columns (10).

10. The shaft boring system according to claim 1, characterized in that the first boring machine (30) comprises a first movable platform (31) movable along the sliding rail (20), a first excavation arm (32) controlled by an oil cylinder (62) is rotatably connected to the first movable platform (31), and an excavation tool is connected to the end of the first excavation arm (32).

11. The shaft boring system according to claim 8, characterized in that the second boring machine (40) comprises a second movable platform (41) movable along the central circular rail (21), a second excavation arm (42) controlled by an oil cylinder (62) is rotatably connected to the second movable platform (41), and a working module is connected to the end of the second excavation arm (42).

12. The shaft boring system according to claim 1, characterized in that the top of the support column (10) is above ground, the top of the support column (10) having a working platform (60); the bottom of support column (10) is equipped with reinforcement base (13), the diameter of reinforcement base (13) is greater than the diameter of support column (10).