Rapid forming device for tunnel inverted arch

Abstract

The utility model belongs to the technical field of tunnel construction, and particularly relates to a tunnel inverted arch rapid forming device which replaces a traditional drilling and blasting method construction technology, improves excavation construction efficiency of a tunnel inverted arch and guarantees one-time excavation forming of a tunnel inverted arch structure. Comprising an inverted arch type tunneling device, the inverted arch type tunneling device comprises a tunneling shield body, a tunneling cutterhead is arranged at the front end of the inverted arch type tunneling device, and the tunneling cutterhead is powered by a main drive arranged in the inverted arch type tunneling device to conduct tunnel inverted arch excavation. An adjustable conveying device and a muck conveying device are respectively arranged at the rear end of the tunneling cutterhead, and a pushing system is arranged behind the inverted arch type tunneling device. According to the tunnel inverted arch rapid forming device with the novel structural design, the over-excavation phenomenon occurring in tunnel inverted arch excavation is effectively avoided, and the construction operation quality of the tunnel inverted arch is improved. While the equipment meets the requirement for rapid excavation and forming of the inverted arch, a convenient working environment for on-site material transportation is provided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of tunnel construction, specifically relates to a tunnel inverted arch rapid forming device. BACKGROUND

[0002] The tunnel inverted arch is a reverse arch structure arranged at the bottom of the tunnel to improve the stress condition of the upper support structure of the tunnel, is one of the main components of the tunnel structure, and effectively transmits the load on the road surface to the underground through the tunnel side wall structure or resists the reaction force from the lower stratum of the tunnel. The inverted arch and the secondary lining form the whole tunnel to increase the structural stability. In the construction process of the existing tunnel inverted arch structure, especially the mountain tunnel inverted arch structure, the drilling and blasting method is usually used for excavation. The conventional drilling and blasting method not only consumes a lot of manpower and material resources, has a poor construction environment, and cannot effectively guarantee the safety of personnel operation, but also has low construction efficiency. Meanwhile, over-excavation frequently occurs in the excavation process, which greatly affects the construction quality of the tunnel inverted arch. SUMMARY

[0003] The utility model discloses a tunnel inverted arch rapid forming device, which replaces the traditional drilling and blasting method construction process, greatly improves the excavation construction efficiency of the tunnel inverted arch, guarantees one-time excavation forming of the tunnel inverted arch structure, reduces the labor intensity of workers, guarantees the safety of the construction operation of workers, effectively avoids over-excavation in the excavation of the tunnel inverted arch, and improves the construction quality of the tunnel inverted arch.

[0004] The utility model discloses a tunnel inverted arch rapid forming device, which replaces the traditional drilling and blasting method construction process, greatly improves the excavation construction efficiency of the tunnel inverted arch, guarantees one-time excavation forming of the tunnel inverted arch structure, reduces the labor intensity of workers, guarantees the safety of the construction operation of workers, effectively avoids over-excavation in the excavation of the tunnel inverted arch, and improves the construction quality of the tunnel inverted arch.

[0005] The utility model discloses a tunnel inverted arch rapid forming device, which replaces the traditional drilling and blasting method construction process, greatly improves the excavation construction efficiency of the tunnel inverted arch, guarantees one-time excavation forming of the tunnel inverted arch structure, reduces the labor intensity of workers, guarantees the safety of the construction operation of workers, effectively avoids over-excavation in the excavation of the tunnel inverted arch, and improves the construction quality of the tunnel inverted arch.

[0006] The utility model discloses a tunnel inverted arch rapid forming device, which replaces the traditional drilling and blasting method construction process, greatly improves the excavation construction efficiency of the tunnel inverted arch, guarantees one-time excavation forming of the tunnel inverted arch structure, reduces the labor intensity of workers, guarantees the safety of the construction operation of workers, effectively avoids over-excavation in the excavation of the tunnel inverted arch, and improves the construction quality of the tunnel inverted arch.

[0007] The tunnel inverted arch rapid forming device comprises an inverted arch type tunneling device, the inverted arch type tunneling device comprises a tunneling shield body, an excavating cutter head is arranged at the front end of the inverted arch type tunneling device, the excavating cutter head is powered by a main drive arranged in the inverted arch type tunneling device, and the tunnel inverted arch is excavated; an adjustable conveying device and a muck transporting device are arranged at the rear end of the excavating cutter head; and a jacking system is arranged at the rear of the inverted arch type tunneling device.

[0008] The excavating cutter head is arranged in multiple numbers and has the same or different structural section sizes, and the excavating cutter heads are arranged in front of and behind each other.

[0009] The inverted arch type tunneling device adopts a "half-arc" structure design, and the structural section is matched with the tunnel inverted arch structure to be constructed.

[0010] The adjustable conveying device comprises a conveying device body, an adjusting flange is arranged at a position behind the tunneling cutter head of the conveying device body, and a fixing flange connected with the tunneling shield is arranged at the rear of the conveying device body.

[0011] The adjustable conveying device adopts a scraper conveyor or a screw conveyor.

[0012] The muck transporting device adopts locomotive transportation, electric vehicle transportation or belt conveyor transportation.

[0013] The pushing system comprises a pushing counterforce frame, and a plurality of pushing oil cylinders are arranged on the pushing counterforce frame.

[0014] The adjusting extension block arranged on the tunneling cutter head is suitable for rapid construction of the tunnel invert under different geological conditions.

[0015] The tunnel invert rapid forming device has the advantages that:

[0016] The tunnel invert rapid forming device effectively replaces the traditional drill-and-blast construction process, greatly improves the excavation construction efficiency of the tunnel invert, guarantees one-time excavation forming of the tunnel invert structure, reduces the labor intensity of workers, guarantees the safety of the working operation of the workers, effectively avoids over-excavation phenomenon of the tunnel invert, improves the working operation quality of the tunnel invert, and provides a convenient working environment for on-site material transportation while satisfying the rapid excavation forming of the invert, and facilitates the material transportation process in the tunnel construction process. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 FIG. 1 is a structural schematic view of the invert rapid forming device of the utility model;

[0018] Fig. 2 FIG. 2 is a structural schematic view of the tunneling cutter head of the utility model;

[0019] Fig. 3 FIG. 3 is a structural schematic view of the main drive of the tunneling cutter head of the utility model;

[0020] Fig. 4 FIG. 4 is a structural schematic view of the formed tunnel of the utility model.

[0021] In the figure, 1 is an invert tunneling device, 2 is a tunneling shield, 3 is a tunneling cutter head, 4 is a main drive, 5 is an adjustable conveying device, 6 is a muck transporting device, 7 is a pushing system, 8 is a transportation plane, 9 is a conveying device body, 10 is an adjusting flange, 11 is a fixing flange, 12 is a pushing counterforce frame, 13 is a pushing oil cylinder, 14 is an adjusting extension block, and 15 is a formed invert structure. DETAILED DESCRIPTION

[0022] The detailed description of the specific embodiments of the present application will be made below with reference to the accompanying drawings.

[0023] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative in nature and is in no way intended to limit the application, its application, or uses, to the specific embodiments described. The application can be implemented in numerous ways, including, but not limited to, the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art. It should be noted that the relative arrangement of components and steps, the numerical expressions, and the numerical values set forth in these embodiments are to be interpreted as merely exemplary, and not as a limitation of the application unless otherwise specifically indicated.

[0024] The terms "first", "second", and similar terms used in the present application do not denote any order, quantity, or importance, but are used to distinguish different parts. The terms "comprise", "include", and similar terms mean that the elements before the term encompass the elements listed after the term, and do not exclude the possibility of also encompassing other elements. "Up", "down", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] All terms used in the present application (including technical terms or scientific terms) have the same meaning as understood by those skilled in the art to which the present application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted to have meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or excessively formalized sense, unless explicitly defined herein.

[0026] Techniques, methods, and equipment known to those skilled in the relevant art may not be discussed in detail, but in appropriate cases, the techniques, methods, and equipment should be considered as part of the specification.

[0027] As Figs. 1-4As shown, the tunnel invert is an important structure for improving the stress condition of the upper support structure of the tunnel and is a main component of the tunnel structure. In the construction process of the existing tunnel invert structure, especially the mountain tunnel invert structure, the drilling and blasting method is usually used for excavation. However, the traditional drilling and blasting method has low construction efficiency and frequent overbreak phenomenon, and the tunnel forming quality is poor, especially in the construction process of the mountain tunnel or the horseshoe-shaped tunnel. Therefore, in order to further improve the construction efficiency and forming quality of the tunnel invert, a tunnel invert rapid forming device is provided, which comprises an invert-type tunneling device 1. The invert-type tunneling device comprises a tunneling shield body 2, an excavating cutter head 3 is arranged at the front end of the invert-type tunneling device, the excavating cutter head is powered by a main drive 4 arranged in the invert-type tunneling device to excavate the tunnel invert, an adjustable conveying device 5 and a spoil conveying device 6 are arranged at the rear end of the excavating cutter head, and a jacking system 7 is arranged at the rear of the invert-type tunneling device. The tunnel invert rapid forming device with the novel structure design replaces the traditional drilling and blasting method with a simple and convenient tunneling system device. The invert-type machine body matched with the tunnel invert section is designed, and the tunnel invert construction process is quickly and efficiently completed by using the rapid forming device after the tunnel is constructed by using the step method. The tunnel overbreak construction is avoided, the forming quality is good, and the counterforce in the excavation process is provided by the jacking system during the excavation of the excavating cutter head powered by the main drive. The spoil is directly conveyed out by the adjustable conveying device and the spoil conveying device, and the jacking system is used to provide the counterforce in the excavation process, which is convenient and fast.

[0028] Preferably, the excavating cutter heads are arranged in front of and behind each other for facilitating the excavation of tunnels with different sizes.

[0029] Preferably, the invert-type tunneling device adopts a "half-arc" structure design, and the structure section is matched with the tunnel invert structure to be constructed.

[0030] Preferably, a transportation plane 8 is arranged at the upper end of the invert-type tunneling device. The transportation plane is arranged at the upper end of the invert-type tunneling device to facilitate the excavation of other sections of the tunnel, the transportation of materials and the transportation of spoil, and the like by matching the step method and other tunnel construction methods.

[0031] Preferably, the adjustable conveying device comprises a conveying device body 9, an adjusting flange 10 is arranged at the rear position of the tunneling cutter head of the conveying device body, and a fixed flange 11 connected with the tunneling shield is arranged at the rear of the conveying device body. The adjustable structure of the conveying device facilitates the process of sending the muck to the rear muck conveying device through the conveying device, and can be conveniently and quickly adjusted according to different conveying devices, and is suitable for inverted arch tunnel construction. The adjusting flange can adopt the form of an adjusting buckle flange, and a rotating pair is formed at the adjusting buckle, which facilitates the installation and adjustment of the screw conveyor.

[0032] Preferably, the adjustable conveying device adopts a scraper conveyor or a screw conveyor.

[0033] Preferably, the muck conveying device adopts locomotive transportation, battery car transportation or belt conveyor transportation.

[0034] Preferably, the jacking system comprises a jacking counterforce frame 12, and a plurality of jacking oil cylinders 13 are arranged on the jacking counterforce frame. The jacking oil cylinders take the jacking counterforce frame as a power base point and continuously push the inverted arch rapid forming device to move forward.

[0035] Preferably, an adjusting extension block 14 is arranged on the tunneling cutter head and is suitable for rapid construction of the tunnel inverted arch under different geological conditions. For example, during construction of a tunnel V-class surrounding rock, the V-class surrounding rock is the second best surrounding rock in underground engineering. It refers to stable rock, but there can be some cracks or loose zones. The five-level surrounding rock is more prone to collapse or surrounding rock damage than the four-level surrounding rock. Moreover, the inverted arch size section is slightly larger than that of the IV-class surrounding rock. In order to ensure the rapid construction of the rapid tunneling forming device without changing the size of the equipment, the adjusting extension block structure is installed on the tunneling cutter head during construction, thereby quickly solving the problem of variable diameter of the cutter head excavation size, and ensuring the efficiency and stability of the inverted arch forming.

[0036] The tunnel inverted arch rapid forming device with the novel structure design effectively replaces the traditional drilling and blasting construction process, greatly improves the excavation efficiency of the tunnel inverted arch, ensures one-time excavation forming of the tunnel inverted arch structure, reduces the labor intensity of workers, ensures the safety of the workers' construction operation, effectively avoids the over-excavation phenomenon of the tunnel inverted arch excavation, and improves the construction operation quality of the tunnel inverted arch. While the equipment meets the requirements of rapid excavation forming of the inverted arch, it also provides a convenient operation environment for on-site material transportation, facilitating the material transportation process during tunnel construction.

Claims

1. A rapid prototyping device for tunnel inverts, characterized in that: The device includes an inverted arch tunneling device, which includes a tunneling shield and a cutterhead at the front end. The cutterhead is powered by a main drive arranged inside the inverted arch tunneling device to excavate the tunnel invert. An adjustable conveying device and a muck transport device are respectively installed at the rear end of the cutterhead. A jacking system is installed behind the inverted arch tunneling device.

2. The rapid prototyping device for tunnel inverts according to claim 1, characterized in that: The tunneling cutterheads are configured in multiple ways, and have the same or different structural cross-sectional dimensions, with the cutterheads arranged alternately in front and behind each other.

3. A rapid prototyping device for tunnel inverts according to claim 1 or 2, characterized in that: The aforementioned arch-shaped tunneling device adopts a "semi-arc" structural design, and its structural cross-section matches the arch structure of the tunnel to be constructed.

4. The rapid prototyping device for tunnel inverts according to claim 3, characterized in that: A transport plane is provided on the upper surface of the inverted arch-type tunneling device.

5. The rapid prototyping device for tunnel inverts according to claim 1, characterized in that: The adjustable conveying device includes a conveying device body, an adjusting flange located at the front of the conveying device body and behind the tunneling cutterhead, and a fixed flange located at the rear of the conveying device body and connected to the tunneling shield.

6. The rapid prototyping device for tunnel inverts according to claim 5, characterized in that: The adjustable conveying device is a scraper conveyor or a screw conveyor.

7. The rapid prototyping device for tunnel inverts according to claim 1, characterized in that: The aforementioned waste soil transportation device adopts locomotive transportation, battery-powered vehicle transportation, or belt conveyor transportation.

8. The rapid prototyping device for tunnel inverts according to claim 1, characterized in that: The jacking system includes a jacking reaction frame, on which multiple jacking cylinders are arranged.

9. The rapid prototyping device for tunnel inverts according to claim 2, characterized in that: An adjustable extension block is installed on the cutterhead, which is suitable for rapid construction of tunnel inverts under different geological conditions.

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