Tunnel boring machine advance support device and tunnel boring machine

Abstract

The utility model belongs to the technical field of tunnel boring machines, and particularly relates to a tunnel boring machine forepoling device and a tunnel boring machine. The utility model relates to an advance support device for a double-mode or multi-mode tunnel boring machine, which ensures the construction safety of the double-mode or multi-mode tunnel boring machine in the construction process of penetrating through a soft and unconsolidated stratum and avoids unnecessary shutdown or tunneling difficulty caused by extrusion of a shield body and a cutterhead, and comprises the shield body and a tunnel support duct piece, and the advance support device is arranged on the tunnel support duct piece. The advance supporting device comprises a first propelling oil cylinder and a second propelling oil cylinder which are arranged on the shield body, the first propelling oil cylinder pushes towards the tunneling face, a supporting slotting tool is installed at the front end of the first propelling oil cylinder, and the propelling direction of the second propelling oil cylinder faces the tunnel supporting segment. According to the advanced support device with the novel structural design, the construction safety of the tunnel boring machine in the construction process of penetrating through the soft and unconsolidated stratum is further guaranteed, the construction efficiency of enterprises is improved, the construction cost of the enterprises is reduced, and the economic benefits of the enterprises are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tunnel boring machine technical field, specifically relates to a tunnel boring machine advance support device and tunnel boring machine. BACKGROUND

[0002] Tunnel boring machine is a large professional equipment according to tunnel construction object "tailor-made", and its core technology lies in how equipment is applicable to various engineering geology. Nowadays, with the continuous development of tunnel engineering boring technology, more complex geological and hydrological conditions often need to be faced in the boring process. In the construction process of soft and hard alternating composite stratum, single mode shield machine often cannot meet the construction requirements due to poor geological adaptability. Although there is a double-mode or multi-mode structure tunnel boring machine in the prior art, it often has poor supporting effect, especially in the process of tunnel boring machine crossing soft and loose stratum, the complex geological surrounding rock will extrude the shield body and cutter head, causing unnecessary shutdown maintenance, bringing great difficulty and unnecessary loss to the boring process, reducing the boring construction efficiency of enterprises and increasing the boring machine construction cost of enterprises. SUMMARY

[0003] The utility model discloses a tunnel boring machine advance support device and tunnel boring machine, which is characterized by the following:

[0004] The utility model discloses a tunnel boring machine advance support device and tunnel boring machine, which is characterized by the following:

[0005] The utility model discloses a tunnel boring machine advance support device and tunnel boring machine, which is characterized by the following:

[0006] The utility model provides a tunnel boring machine advance support device, including shield body and tunnel support pipe piece, is installed with advance support device on tunnel support pipe piece, and the advance support device includes the push oil jar no. 1 and push oil jar no. 2 set up on shield body, wherein the push oil jar no. 1 is pushed to the tunnel boring face direction, and the push oil jar no. 2 is pushed to the direction of tunnel support pipe piece.

[0007] The advance support device is arranged as at least two along the circumferential direction of the tunnel support pipe piece.

[0008] Adjusting movable block is further arranged between the push oil jar no. 1 and the support plug, and the adjusting movable block is connected with the push oil jar no. 1 and the support plug by mounting bolts.

[0009] The push oil jar no. 3 is further arranged on the inner side of the shield body.

[0010] The tunnel boring machine comprises the tunnel boring machine forepoling device of any one of the preceding aspects, and is provided with a screw conveyor and / or a belt conveyor at a central region of a cutter head of the tunnel boring machine.

[0011] The earth pressure balance bin is formed between the cutter head and the shield body.

[0012] The steel pipe piece assembling machine and / or the steel arch assembling machine are arranged inside the shield body.

[0013] The main beam is arranged inside the shield body, and the supporting shoe is arranged on the main beam.

[0014] The tunnel boring machine is further provided with a sprayed concrete support assembly, and the sprayed concrete support assembly comprises an anchor rod support component, a steel mesh support component and a sprayed concrete support component.

[0015] The tunnel boring machine forepoling device has the following beneficial effects:

[0016] The tunnel boring machine forepoling device and the tunnel boring machine have the following beneficial effects: the special forepoling device is additionally arranged, the construction safety of the double-mode or multi-mode tunnel boring machine during the construction process of passing through the soft and loose stratum is further ensured, unnecessary shutdown or tunneling difficulty caused by extrusion of the shield body and the cutter head is avoided, the construction efficiency of the enterprise is improved, the construction cost of the enterprise is reduced, and the economic benefit of the enterprise is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a front view structural schematic diagram of the tunnel boring machine forepoling device.

[0018] Fig. 2 It is a side view structural schematic diagram of the tunnel boring machine forepoling device.

[0019] Fig. 3 It is a structural schematic diagram of the tunnel boring machine.

[0020] In the figure, 1 is a shield body, 2 is a tunnel support pipe piece, 3 is a forepoling device, 4 is a first pushing oil cylinder, 5 is a second pushing oil cylinder, 6 is a support cutter, 7 is an adjusting movable block, 8 is a mounting bolt, 9 is a third pushing oil cylinder, 10 is a screw conveyor, 11 is a belt conveyor, 12 is an earth pressure balance bin, 13 is a steel pipe piece assembling machine, 14 is a steel arch assembling machine, 15 is a main beam, and 16 is a supporting shoe. DETAILED DESCRIPTION

[0021] The specific implementation manner of the utility model is described in detail in combination with the accompanying drawings.

[0022] Various exemplary embodiments of the present application will now be described in detail with reference to the figures. 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. The application can be implemented in any manner, not limited to the embodiments described herein. Such embodiments are provided so that this application will be thorough and complete, and fully convey the scope of the application to those skilled in the art. It should be noted that relative arrangements of components and steps, compositions of materials, numerical expressions, and values set forth in these embodiments are to be interpreted as merely exemplary, and not as a limitation unless otherwise specifically stated.

[0023] 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.

[0024] 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, for example, a general dictionary should be interpreted to have meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or overly formalized sense unless explicitly defined herein.

[0025] Techniques, methods, and equipment known to those skilled in the relevant art can not be discussed in detail, but in appropriate cases, the techniques, methods, and equipment should be considered as part of the specification.

[0026] As Figs. 1-3As shown, a tunneling machine forepoling device is provided, comprising a shield body 1 and a tunnel support segment 2, a forepoling device 3 is arranged on the tunnel support segment, the forepoling device comprises a pushing cylinder 1 and a pushing cylinder 2 arranged on the shield body, wherein the pushing cylinder 1 is arranged to push towards the tunneling face direction, a support cutter 6 is arranged at the front end of the pushing cylinder 1, and the pushing direction of the pushing cylinder 2 is towards the tunnel support segment direction. The tunneling machine forepoling device provided by the novel structure is mainly used for the tunneling machine to pass through soft and loose strata and encounter unstable surrounding rock geological conditions, and is especially suitable for the construction safety protection of the double-mode or multi-mode tunneling machine during construction. When the tunneling machine passes through soft and loose strata, the surrounding rock deformation easily causes extrusion of the cutter head and the shield body of the tunneling machine, resulting in that the tunneling machine cannot normally advance. By arranging the pushing cylinder 1 on the shield body of the tunneling machine and connecting the support cutter, the cutter structure is pushed to the front end position of the tunneling face by the pushing cylinder 1, which effectively prevents the extrusion deformation of the cutter head and the shield body caused by the deformation of the surrounding rock in soft and loose strata, and further ensures the construction safety of the tunneling machine. At the same time, in soft and loose geological conditions, it is usually necessary to set a slightly larger diameter segment structure for tunnel support, and the traditional pushing cylinder cannot tightly push the segment for advancement due to the change of the tunnel diameter and the change of the pushing and retracting distance. The pushing cylinder 2 is arranged on the shield body, and the pushing force of the pushing cylinder 2 tightly pushes the support segment, providing the driving force for the tunneling machine to advance in soft and loose strata.

[0027] Preferably, in order to reduce the temporary support cost during the construction of the enterprise and improve the efficiency of the tunneling machine, the forepoling device is arranged along the tunnel support segment in at least two rings.

[0028] Preferably, an adjusting movable block 7 is further arranged between the pushing cylinder 1 and the support cutter, and the adjusting movable block is connected with the pushing cylinder 1 and the support cutter through mounting bolts 8. The adjusting movable block can be further adjusted according to the length of the front end support, and the mounting bolts are convenient for temporary disassembly and installation, which is further suitable for the temporary construction process of the tunneling machine in various unstable surrounding rock strata.

[0029] Preferably, a pushing cylinder 3 9 is further arranged on the inner side of the shield body. The pushing cylinder 3 provides power for the normal advancement of the tunneling machine when the double-mode or multi-mode tunneling machine passes through normal geological conditions.

[0030] Preferably, a tunnel boring machine comprises the tunnel boring machine forepoling device of any one of the preceding claims, and a screw conveyor 10 and / or a belt conveyor 11 are arranged at the center region of the cutter head of the tunnel boring machine. The tunnel boring machine can be an earth pressure balance shield tunnel boring machine or a TBM tunnel boring machine, or a tunnel boring machine structure combined with a multi-mode tunnel boring machine. The screw conveyor or the belt conveyor can be arranged at the center region of the cutter head, or a front screw conveyor can be used, and a belt conveyor is added to the discharge port of the screw conveyor to further improve the tunnel boring efficiency and ensure stable discharge.

[0031] Preferably, in order to ensure the stable tunnel boring of the tunnel boring machine in the earth pressure balance boring mode, an earth pressure balance chamber 12 is formed between the cutter head and the shield body.

[0032] Preferably, a steel pipe segment erector 13 and / or a steel arch erector 14 are arranged inside the shield body, which facilitates the installation of the steel pipe segment and the steel arch.

[0033] Preferably, a main beam 15 is arranged inside the shield body, and a support shoe 16 is arranged on the main beam.

[0034] Preferably, a shotcrete support assembly is further arranged on the tunnel boring machine, and the shotcrete support assembly comprises an anchor rod support component, a steel mesh support component, and a shotcrete support component.

[0035] The tunnel boring machine forepoling device and the tunnel boring machine with the novel structure design further ensure the construction safety of the double-mode or multi-mode tunnel boring machine during the construction process of passing through soft and loose strata, avoid unnecessary shutdown or boring difficulties caused by the extrusion of the shield body and the cutter head, improve the construction efficiency of the enterprise, reduce the construction cost of the enterprise, and improve the economic benefit of the enterprise.

Claims

1. A tunnel boring machine advance support device comprising a shield body and a tunnel support segment, characterised in that: The advanced support device is arranged on the tunnel support segment, and the advanced support device comprises a pushing oil cylinder I and a pushing oil cylinder II arranged on the shield body, wherein the pushing oil cylinder I pushes in the direction of the tunnel excavation face, a support cutter is arranged at the front end of the pushing oil cylinder I, and the pushing direction of the pushing oil cylinder II is towards the direction of the tunnel support segment.

2. A tunnel boring machine advance support device according to claim 1, characterised in that: The advanced support device is arranged in at least two rings along the tunnel support segment.

3. A tunnel boring machine advance support device according to claim 1 or 2, characterised in that: An adjusting movable block is further arranged between the pushing oil cylinder I and the support cutter, and the adjusting movable block is connected with the pushing oil cylinder I and the support cutter through mounting bolts.

4. A tunnel boring machine advance support device according to claim 3, characterised in that: A pushing oil cylinder III is further arranged on the inner side of the shield body.

5. A tunnel boring machine comprising a tunnel boring machine advance support device according to any one of claims 1 to 4, characterized in that: A screw conveyor and / or a belt conveyor are arranged at the central region of the cutter head of the tunnel boring machine.

6. A tunnel boring machine according to claim 5, characterised in that: A soil pressure balance bin is formed between the cutter head and the shield body.

7. A tunnel boring machine according to claim 6, characterised in that: A steel segment assembling machine and / or a steel arch assembling machine are arranged in the shield body.

8. A tunnel boring machine according to claim 6 or 7, characterised in that: A main beam is arranged in the shield body, and a supporting shoe is arranged on the main beam.

9. A tunnel boring machine according to claim 8, characterised in that: An injection support assembly is further arranged on the tunnel boring machine, and the injection support assembly comprises an anchor rod support component, a steel mesh support component and an injection support component.

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