Stepping hole structure for inclined shaft TBM

Abstract

The stepping hole structure for the inclined shaft TBM comprises a starting section, an assembling section and a portal frame, the assembling section comprises an inclined shaft downward-bending section, and the inclined shaft downward-bending section is provided with a lower flat section, a lower flat turning section and an inlet which are sequentially connected in the direction away from the starting section; the sum of the lengths of the lower bent section, the lower flat section, the lower flat turning section and the inlet of the inclined shaft is greater than the length of TBM equipment; the portal frame is fixedly installed in the assembling section. By means of the inclined shaft TBM stepping hole structure, enough space is provided for assembling and starting of TBM equipment, the TBM equipment is assembled in the assembling section, TBM equipment parts can be temporarily stored, damaged parts are repaired, convenience is provided for assembling, a proper tunneling direction is provided for the TBM in the starting section of the stepping hole, and by means of reasonable space planning, the TBM equipment can be assembled and started. The problem of field assembly site planning and arrangement of the TBM equipment in the construction process of the TBM method is solved, and the construction efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of TBM construction, and in particular to a stepping hole structure for inclined shaft TBM. Background Art

[0002] TBM equipment, namely Tunnel Boring Machine, is a large-scale mechanical equipment used for tunnel excavation. TBM consists of a shield machine and a supporting system, mainly including a cutter head and cutter, a shield body, a main drive system, a propulsion system, a screw conveyor, a belt conveyor, a segment assembly machine, and a segment trailer. The length of the TBM can reach 285m and the height can reach 9.03m. Due to the complex structure and large size of TBM, TBM components usually need to be transported to the site for assembly, and excavation work can be carried out after assembly.

[0003] Before TBM excavation, the TBM equipment needs to be assembled, and a predetermined track for the TBM to enter needs to be set up at the starting section. In addition, the assembly of TBM equipment requires sufficient space to accommodate TBM components and auxiliary tools for assembly, and the transportation of slag and other debris is involved during the excavation of TBM equipment. These tasks all require reasonable space planning for the work site. Otherwise, the site needs to be expanded and coordinated repeatedly during construction, which reduces construction efficiency. Utility Model Content

[0004] The present application provides a stepping hole structure for inclined shaft TBM, which solves the problems of on-site assembly and site planning and layout of TBM equipment during TBM construction through reasonable space planning, so as to improve construction efficiency.

[0005] The present application provides a step-through hole structure for an inclined shaft TBM, comprising a starting section, an assembly section and a gantry, wherein the height of the step-through hole structure is greater than the height of the TBM equipment and the gantry, the assembly section comprises an inclined shaft lower curved section, the inclined shaft lower curved section is used for transition connection between the starting section and the assembly section, the inclined shaft lower curved section is provided with a lower flat section, a lower flat turning section and an entrance connected in sequence in a direction away from the starting section; the sum of the lengths of the inclined shaft lower curved section, the lower flat section, the lower flat turning section and the entrance is greater than the length of the TBM equipment; the gantry is fixedly installed in the assembly section.

[0006] In a feasible implementation, the assembly section includes a slag discharge pipe, a slag-water separation device, a drainage pipe and a slag conveyor belt; the slag discharge pipe is installed in the lower bend section of the inclined shaft, the inlet of the slag-water separation device is aligned with the slag outlet of the slag discharge pipe (211), the drainage outlet of the slag-water separation device is connected to the drainage pipe, and the slag outlet of the slag-water separation device is located above the slag conveyor belt.

[0007] In a feasible implementation, the slag discharge pipe is a curved pipe, and the bending angle of the curved pipe is 135°≤θ<180°.

[0008] In a feasible implementation, one end of the slag discharge pipe is located on the slope of the lower bend section of the inclined shaft, and the other end of the slag discharge pipe is located on the side of the inclined shaft foundation. The slag discharge pipe located on the slope of the lower bend section of the inclined shaft is 5cm-10cm higher than the slope.

[0009] In a feasible implementation, a track for the operation of the TBM equipment is provided in the middle of the lower curved section of the inclined shaft, and pedestrian ladders are provided on both sides of the track.

[0010] In a feasible implementation, the width of the assembly section is greater than the width of the starting section.

[0011] In a feasible implementation, the angle between the lower flat turning section and the lower flat section is 120°-150°.

[0012] In a feasible implementation, the surface of the lower flat turning section is a slope with a slope of 3°-10°.

[0013] In a feasible implementation, a ventilation duct is provided on the top of the assembly section.

[0014] The present application provides a stepping hole structure for inclined shaft TBM, including a starting section, an assembly section and a gantry, the assembly section includes an inclined shaft lower curved section, the inclined shaft lower curved section is used for the transition connection between the starting section and the assembly section, the inclined shaft lower curved section is provided with a lower flat section, a lower flat turning section and an entrance connected in sequence in the direction away from the starting section; the length of the inclined shaft lower curved section, the lower flat section, the lower flat turning section and the entrance is greater than the length of the TBM equipment; the gantry is fixedly installed in the assembly section. The stepping hole structure of the inclined shaft TBM provided by the present application provides sufficient space for the assembly and starting of the TBM equipment, the assembly section needs to meet the space requirements for the assembly of the TBM equipment, and can temporarily store the parts of the TBM equipment, and repair the damaged parts, to facilitate the assembly, provide a suitable excavation direction for the TBM in the starting section of the stepping hole, and solve the problems of on-site assembly and site planning and layout of the TBM equipment during the TBM construction process through reasonable space planning, thereby improving the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 It is a schematic longitudinal section diagram of the stepping hole structure of the inclined shaft TBM provided in this application;

[0017] Figure 2 It is a schematic plan view of the stepping hole structure of the inclined shaft TBM provided in this application;

[0018] Figure 3 This is a schematic diagram of the slag discharge pipeline.

[0019] Description of reference numerals:

[0020] Among them, 1-starting section; 2-assembly section; 21-downward bending section of the inclined shaft; 211-slag discharge pipe; 22-lower flat section; 23-lower flat turning section; 24-entrance; 25-slag-water separation device; 26-drainage pipe; 27-slag conveyor belt; 3-gantry. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0022] TBM (Tunnel Boring Machine) consists of a shield main machine and a supporting system. Due to the large size and complex structure of TBM, the assembly of TBM requires sufficient space. At present, the assembly of TBM can be divided into two parts: inside the tunnel and outside the tunnel. The assembly outside the tunnel usually assembles the TBM main machine according to normal procedures, and then the supporting parts are transported and hoisted into the tunnel in sections for assembly. The assembly inside the tunnel requires ensuring that the main machine and the equipment bridge are assembled at the entrance of the tunnel and meet the step-in conditions, and then the supporting trailers are gradually disassembled, transported and assembled. During the entire assembly process, site layout and preparation are very important. It is necessary to ensure that the site is clean and orderly, and the equipment is placed reasonably to reduce interference with each other. The stepping hole structure for inclined shaft TBM provided in this application solves the problems of on-site assembly and site planning and layout of TBM equipment during TBM construction through reasonable space planning, thereby improving construction efficiency.

[0023] The stepping hole structure of the inclined shaft TBM provided in this application is described in detail below with reference to the accompanying drawings.

[0024] Reference Figure 1 and Figure 2 As shown, Figure 1 is a schematic longitudinal section diagram of the stepping hole structure of the inclined shaft TBM provided in this application, Figure 2 It is a schematic plan view of the stepping hole structure of the inclined shaft TBM provided in this application.

[0025] The present application provides a stepping hole structure for inclined shaft TBM, aiming to provide an efficient and safe working environment to facilitate the assembly, operation and maintenance of TBM equipment. The height of the stepping hole should be sufficient to allow the TBM equipment and the gantry to enter and exit smoothly, ensuring that there is enough space for operation and movement. The stepping hole structure mainly includes a starting section 1, an assembly section 2 and a gantry 3. The assembly section 2 includes an inclined shaft lower curved section 21, which is used for the transition connection between the starting section 1 and the assembly section 2. The inclined shaft lower curved section 21 is connected to the starting section 1, and the inclined shaft lower curved section 21 is provided with a lower flat section 22, a lower flat turning section 23 and an entrance 24 connected in sequence in the direction away from the starting section 1; the length of the inclined shaft lower curved section 21, the lower flat section 22, the lower flat turning section 23 and the entrance 24 is greater than the length of the TBM equipment; the gantry 3 is fixedly installed in the assembly section 2.

[0026] In this application, the connection between the starting section 1 and the assembly section 2 is the starting point of TBM excavation. The assembly section 2 includes the lower curved section 21 of the inclined shaft, the lower flat section 22, and the lower flat turning section 23, wherein the lower curved section 21 of the inclined shaft is connected to the starting section 1, and the connection between the lower curved section 21 of the inclined shaft and the starting section 1 is the starting point of TBM excavation. The lower curved section 21 of the inclined shaft is an arc-shaped structure as a whole, and the surface is flat, ensuring that the TM equipment can smoothly transition to the starting section 1. The lower flat section 22 is connected to the lower curved section 21 of the inclined shaft. As the main place for the assembly of TBM equipment, the space of the lower flat section 22 should be able to meet the storage and assembly of all parts of the TBM equipment. For example, when the gantry 3 is installed with the lower flat section 22, the height of the lower flat section 22 should be greater than the height of the gantry 3. It can be understood that during the assembly process, the components located at the top of the TBM also need to be hoisted by the gantry 3, and the height of the gantry 3 is greater than the height of the TBM. In the length direction, the length of the assembly section 2 should be greater than the length of the TBM equipment, so as to ensure the normal operation of the TBM equipment. It can also be understood that the sum of the lengths of the inclined shaft lower bend section 21, the lower flat section 22, the lower flat turning section 23 and the entrance 24 that constitute the assembly section 2 is greater than the length of the TBM equipment.

[0027] Reference Figure 2 As shown, in some embodiments, the assembly section 2 includes a slag discharge pipe 211, a slag-water separation device 25, a drainage pipe 26 and a slag conveyor belt 27; the slag discharge pipe 211 is installed in the lower bend section 21 of the inclined shaft, the inlet of the slag-water separation device 25 is aligned with the slag outlet of the slag discharge pipe 211, the drainage outlet of the slag-water separation device 25 is connected to the drainage pipe 26, and the slag outlet of the slag-water separation device 25 is located above the slag conveyor belt 27.

[0028] The slag produced during the excavation of the TBM equipment enters the slag discharge pipe 211 through the slag chute, and is discharged to the slag-water separation device 25 through the slag discharge pipe 211. After separation by the slag-water separation device 25, it is discharged to the drainage pipe 26 and the slag conveyor belt 27 respectively, and then transported to the outside of the tunnel by the two. By setting up the slag discharge pipe 211, the continuous discharge of slag during TBM excavation can be achieved, and the difficulties of fast slag discharge speed and easy blockage of slag in inclined shaft construction can be alleviated. An independent working space is separated in the working area of ​​the TBM equipment, which is effectively connected with the slag-water separation device 25, easy to install, inspect, and maintain, with a simple structure, to prevent the equipment from being forced to shut down due to slag discharge obstruction, which will have an adverse effect on the overall progress and safety of tunnel construction.

[0029] Reference Figure 3 As shown, in some embodiments, the slag discharge pipe 211 is a curved pipe, and the bending angle of the curved pipe is 135°≤θ<180°. This design allows the slag to flow more smoothly in the slag chute, reduces the possibility of blockage, and improves the slag discharge efficiency.

[0030] In some embodiments, one end of the slag discharge pipe 211 is located on the slope of the lower curved section 21 of the inclined shaft, and the other end of the slag discharge pipe 211 is located on the side of the inclined shaft foundation, and the slag discharge pipe 211 located on the slope of the lower curved section 21 of the inclined shaft is 5 cm-10 cm higher than the slope. The design of the slag discharge pipe 211 being higher than the slope can prevent the slag from rolling down the slope during the slag discharge process, thereby ensuring the stability and safety of the slag discharge process.

[0031] In some embodiments, a track for TBM equipment operation is provided in the middle of the lower curved section 21 of the inclined shaft, and pedestrian ladders are provided on both sides of the track. This design provides a stable operation track for TBM equipment and a safe walking passage for personnel. When equipment fails, personnel can walk to the fault site from the pedestrian ladder for maintenance.

[0032] In some embodiments, the width of the assembly section 2 is greater than the width of the starting section 1. This design facilitates the layout of the equipment, and the slag-water separation device 25 is arranged on the side of the lower curved section 21 of the inclined shaft, so that the slag discharge pipe 211 and the slag-water separation device 25 can be better connected.

[0033] In some embodiments, the angle between the lower flat turning section 23 and the lower flat section 22 is 120°-150°. A reasonable turning angle ensures that the TBM equipment can turn smoothly.

[0034] In some embodiments, the ground surface of the lower flat turning section 23 is a slope with a slope of 3°-10°. The ground surface of the lower flat turning section 23 is designed to be a slope, so that the equipment can be transported more smoothly.

[0035] In some embodiments, a ventilation duct is provided on the top of the assembly section 2. This design ensures air circulation in the stepping hole and provides a good working environment.

[0036] The present application provides a step-in hole structure for an inclined shaft TBM, which aims to provide an efficient and safe working environment to support the assembly, operation and maintenance of TBM equipment. The structure includes a starting section 1 and an assembly section 2, wherein the assembly section 2 includes a lower curved section 21, a lower flat section 22, and a lower flat turning section 23 of the inclined shaft, to ensure that the TBM equipment can smoothly transition and operate smoothly. In particular, the assembly section 2 also integrates a slag discharge system such as a slag discharge pipe 211, a slag-water separation device 25, a drainage pipe 26, and a slag conveyor belt 27 to efficiently handle the slag generated during the excavation process. The slag discharge pipe 211 is designed as a curved pipe, and the bending angle is optimized to reduce blockage and improve slag discharge efficiency. In addition, the structure also takes into account facilities such as pedestrian ladders, rails, ventilation ducts, etc. to improve personnel passage, equipment transportation and ventilation conditions in the tunnel. The overall design not only ensures the stable operation of the TBM equipment in the inclined shaft, but also improves construction efficiency and operation safety.

[0037] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on the several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0038] The above specific implementation methods further explain in detail the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above are only specific implementation methods of the embodiments of the present application and are not used to limit the protection scope of the embodiments of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A stepping hole structure for a TBM in an inclined shaft, comprising a starting section (1), an assembly section (2) and a gantry (3), wherein the height of the stepping hole is greater than the height of the TBM equipment and the gantry, and characterized in that: The assembly section (2) comprises a lower curved section (21) of the inclined shaft, the lower curved section (21) of the inclined shaft being used for transitional connection between the starting section (1) and the assembly section (2), the lower curved section (21) of the inclined shaft being provided with a lower flat section (22), a lower flat turning section (23) and an entrance (24) which are connected in sequence in a direction away from the starting section (1); the sum of the lengths of the lower curved section (21), the lower flat section (22), the lower flat turning section (23) and the entrance (24) of the inclined shaft being greater than the length of the TBM equipment; the gantry (3) is fixedly installed in the assembly section (2).

2. The stepping hole structure for inclined well TBM according to claim 1 is characterized in that: The assembly section (2) comprises a slag discharge pipeline (211), a slag-water separation device (25), a drainage pipe (26) and a slag conveyor belt (27); the slag discharge pipeline (211) is installed in the lower bend section (21) of the inclined shaft, the inlet of the slag-water separation device (25) is aligned with the slag outlet of the slag discharge pipeline (211), the drainage port of the slag-water separation device (25) is connected to the drainage pipe (26), and the slag outlet of the slag-water separation device (25) is located above the slag conveyor belt (27).

3. The stepping hole structure for inclined well TBM according to claim 2 is characterized in that: The slag discharge pipe (211) is a curved pipe, and the bending angle of the curved pipe is 135°≤θ<180°.

4. The stepping hole structure for inclined well TBM according to claim 3 is characterized in that: One end of the slag discharge pipe (211) is located on the slope of the lower curved section (21) of the inclined shaft, and the other end of the slag discharge pipe (211) is located on the side of the inclined shaft foundation. The slag discharge pipe (211) located on the slope of the lower curved section (21) of the inclined shaft is 5 cm-10 cm higher than the slope.

5. The stepping hole structure for inclined well TBM according to claim 1 is characterized in that: A track for the operation of the TBM equipment is arranged in the middle of the lower curved section (21) of the inclined shaft, and pedestrian ladders are arranged on both sides of the track.

6. The stepping hole structure for inclined well TBM according to claim 1, characterized in that: The width of the assembly section (2) is greater than the width of the starting section (1).

7. The stepping hole structure for inclined well TBM according to claim 1 is characterized in that: The included angle between the lower flat turning section (23) and the lower flat section (22) is 120°-150°.

8. The stepping hole structure for inclined well TBM according to claim 1, characterized in that: The ground surface of the lower flat turning section (23) is a slope with a slope of 3°-10°.

9. The stepping hole structure for inclined well TBM according to claim 1, characterized in that: A ventilation duct is arranged on the top of the assembly section (2).

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