Open type TBM driving power stabilizing system

Abstract

The application discloses an open type TBM tunneling power stabilizing system and relates to the technical field of TBM equipment.The open type TBM tunneling power stabilizing system comprises an auxiliary pushing oil cylinder and a posture adjusting assembly, the auxiliary pushing oil cylinder is arranged on a main body structure of a TBM and has an end facing a lower block front end surface, and the posture adjusting assembly is arranged on the main body structure of the TBM and is configured to drive the main body to adjust the posture by providing a supporting reaction force with the lower block.The application is suitable for a scheme of supporting a tunnel in advance, the open type TBM tunneling power stabilizing system is used to drive the main body structure to tunnel and adjust the posture, the lower block provides the supporting reaction force as support, and a supporting segment is not needed, so that the supporting segment can be prevented from being damaged, and normal tunneling and posture adjustment of the TBM can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of TBM equipment, in particular to an open type TBM tunneling power stabilizing system. BACKGROUND

[0002] TBM is the abbreviation of Tunnel Boring Machine, which is the most advanced tunnel construction machinery in the world at present. It relies on the strong thrust and shear force of the machine to break the rock, so that the tunnel excavation, mucking, lining, grouting, laser guidance and other processes are parallel operation to realize one-time hole forming. TBM method has small disturbance to surrounding rock, smooth and round excavation surface, and less overbreak and underbreak, which can effectively reduce the risk of geological disasters and realize continuous and rapid operation.

[0003] The main reason for the open type TBM in China is that the tunnel support structure constructed by the open type TBM is combined with primary support and secondary lining, which has low comprehensive cost and can directly monitor the deformation of surrounding rock, so that timely treatment and risk control can be performed. The second is double shield TBM, which is mainly affected by the construction environment, geological conditions and comprehensive tunnel forming speed, and is mostly applied in Shanxi water diversion project, Qingdao subway and the like. Single shield TBM is the least used.

[0004] However, for poor geology, the existing open type TBM construction has the defect that it cannot support the excavation face, the inventor of the present application proposes a scheme of supporting the tunnel at the front end of the TBM, that is, the original inverted arch is split into two blocks, which are divided into upper and lower blocks. The size of the lower block can meet the transportation space requirement at the bottom of the front end of the TBM. In this way, the inner wall of the tunnel at the front end of the TBM can be supported to form a ring-shaped support structure, so that the tunnel can be supported in time to prevent collapse in the poor geological section before support. After the tunnel is supported by the above-mentioned ring-shaped support structure, because the support range covers the shoe tunneling system, the shoe needs to be supported on the support segment when tunneling. The support segment is usually made of an arc-shaped steel plate with an inner rib. The inner rib is easily deformed when the shoe is tightened on the inner rib. Therefore, there is an urgent need for a new scheme to solve the above-mentioned problems. SUMMARY

[0005] The purpose of the present application is to provide an open type TBM tunneling power stabilizing system to solve the problems existing in the prior art and provide a new tunneling power stabilizing system to adapt to the early support scheme.

[0006] To achieve the above-mentioned purpose, the present application provides the following scheme:

[0007] The present application provides an open type TBM tunneling power stabilizing system, which comprises:

[0008] Auxiliary pushing oil cylinder, used for being arranged on the main body structure of the TBM and having one end facing the front end surface of the lower segment;

[0009] Posture adjusting assembly, used for being arranged on the main body structure of the TBM and being configured to drive the main body to adjust the posture by providing a supporting reaction force to the lower segment.

[0010] Preferably, the posture adjusting assembly comprises a vertical steering outrigger and a horizontal steering oil cylinder.

[0011] The bottom of the vertical steering outrigger is provided with a support body, the bottom of the support body is an arc structure matched with the top surface of the lower segment, the vertical steering outrigger can drive the support body to descend to abut against the top surface of the lower segment, the vertical steering outrigger and the support body are movably arranged relative to each other along a first horizontal direction, the first horizontal direction is perpendicular to the extension direction of the tunnel, and the cylinder body and the piston of the horizontal steering oil cylinder are connected with the vertical steering outrigger and the support body respectively to drive the vertical steering outrigger to move the main body relative to the support body along the first horizontal direction.

[0012] Preferably, the vertical steering outrigger is provided with two groups, the two groups of vertical steering outriggers are arranged in sequence along the first horizontal direction, and the horizontal steering oil cylinder is also provided with two groups, one group of the horizontal steering oil cylinder is arranged on one group of the vertical steering outrigger.

[0013] Preferably, the two ends of the horizontal steering oil cylinder are hingedly connected with the support body and the vertical steering outrigger respectively.

[0014] The present application has the following technical effects relative to the prior art:

[0015] The present application is suitable for the scheme of supporting the tunnel in advance, the open type TBM tunneling power stabilizing system provided by the present application is used to drive the main body structure to tunnel and adjust the posture, the lower segment is supported to provide a supporting reaction force, and the supporting pipe piece is not needed, so that the supporting pipe piece can be prevented from being damaged, and the normal tunneling and posture adjustment of the TBM can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 It is a structural schematic view of the combined inverted arch and supporting pipe piece.

[0018] Figure 2 is a front view of the combined inverted arch and support segment;

[0019] Figure 3 is a partial structural schematic diagram of a high-performance open TBM provided with the open TBM tunneling power stabilizing system of the embodiment of the present application;

[0020] Figure 4 is Figure 3 is a structural schematic diagram of the vertical and horizontal direction adjusting oil cylinders;

[0021] Figure 5 is Figure 3 is a side view of the vertical and horizontal direction adjusting oil cylinders;

[0022] Figure 6 is Figure 3 is a sectional view at the auxiliary pushing oil cylinder;

[0023] In the figure: 1 - cutter head; 2 - shield; 3 - steel segment erector; 4 - support shoe tunneling system; 5 - open TBM tunneling power stabilizing system; 6 - pushing oil cylinder; 7 - auxiliary pushing oil cylinder; 8 - main drive; 9 - vertical direction adjusting oil cylinder; 10 - horizontal direction adjusting oil cylinder; 11 - vertical direction adjusting support leg; 12 - tunnel wall; 13 - support segment; 14 - lower sub-block; 15 - upper sub-block; 16 - support body. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0025] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0026] For adverse geology, such as Figures 1-3As shown, the existing open TBM construction has the defect that it cannot support the excavation face, the inventor of the present application proposes to support the tunnel at the front end of the TBM by following the excavation face, specifically, the original inverted arch block is divided into an upper sub-block 15 and a lower sub-block 14, the size of the lower sub-block 14 can meet the transportation space requirement at the bottom of the front end of the TBM, so that the inner wall of the tunnel at the front end of the TBM can be supported to form an annular support structure, the lower sub-block 14 can provide counterforce for the TBM and provide a base for the annular support structure, realizing timely support of the excavation face, and the upper sub-block 15 can be assembled according to the conventional progress. The lower sub-block 14 is an arc-shaped plate, the upper sub-block 15 is an arc-shaped column, and the lower sub-block 14 includes a concrete inner core and a steel shell, and the concrete inner core is made of concrete poured into the steel shell.

[0027] When the tunnel is supported by the annular support structure, because the support range covers the support shoe tunneling system, when tunneling, the support shoe needs to be supported on the support segment 13, which is usually made of an arc-shaped steel plate with an inner rib, and the support shoe is easy to deform the inner rib when being tightened on the inner rib. In order to solve the above problem, the present application provides the following scheme:

[0028] As shown in Figures 1-6 , the present application provides an open TBM tunneling power stabilization system 5, comprising:

[0029] An auxiliary push oil cylinder 7 is arranged on the main body structure of the TBM, and one end faces the front end surface of the lower sub-block 14.

[0030] A posture adjusting assembly is arranged on the main body structure of the TBM and is configured to drive the main body to adjust the posture by providing support counterforce to the lower sub-block 14.

[0031] In some embodiments, the auxiliary push oil cylinder 7 is arranged close to the front end cutter head 1 of the main body, specifically, it can be arranged on the nose frame, and the free end thereof is arranged backward, i.e. toward the annular support structure, preferably a plurality of auxiliary push oil cylinders 7 are arranged, and the plurality of auxiliary push oil cylinders 7 are symmetrically arranged about a vertical plane.

[0032] In some embodiments, the posture adjusting assembly includes a vertical direction adjusting support leg 11 and a horizontal direction adjusting oil cylinder 10; the bottom of the vertical direction adjusting support leg 11 is provided with a support body 16, the bottom of the support body 16 is an arc-shaped structure matching the top surface of the lower sub-block 14, the vertical direction adjusting support leg 11 can drive the support body 16 to descend to abut against the top surface of the lower sub-block 14, the vertical direction adjusting support leg 11 and the support body 16 are relatively movably arranged along a first horizontal direction, and the first horizontal direction is perpendicular to the extension direction of the tunnel, and the cylinder body and the piston of the horizontal direction adjusting oil cylinder 10 are connected with the vertical direction adjusting support leg 11 and the support body 16 respectively to drive the vertical direction adjusting support leg 11 to move the main body relative to the support body 16 along the first horizontal direction.

[0033] In this embodiment, the support body 16 at the bottom of the vertical orientation leg 11 is directly in contact with the top surface of the lower sub-block 14, and enables the vertical orientation leg 11 to slide on the support body 16. When sliding is required, the horizontal orientation oil cylinder 10 is driven to extend or retract to drive the vertical orientation leg 11 to move on the support body 16, thereby realizing the adjustment of the main body in the horizontal direction.

[0034] Specifically, the relative movement between the vertical orientation leg 11 and the support body 16 in the first horizontal direction can be achieved in various ways, such as by setting a sliding guide rail, etc. In some optional schemes, the support body 16 can be configured to have a sliding groove extending horizontally along the tunnel, i.e. in the first horizontal direction. The bottom of the vertical orientation leg 11 is provided with a sliding rail matched with the sliding groove, and the sliding rail is slidingly connected with the sliding groove.

[0035] Of course, it is not limited to the above-mentioned sliding connection mode, and any horizontal sliding mode in the prior art can also be used.

[0036] In some embodiments, the two ends of the horizontal orientation oil cylinder 10 are respectively hinged with the support body 16 and the vertical orientation leg 11, and the two hinge shafts are perpendicular to each other in space. The hinge shaft of the horizontal orientation oil cylinder 10 and the support body 16 extends along the first horizontal direction, and the hinge shaft of the horizontal orientation oil cylinder 10 and the vertical orientation leg 11 of the support body 16 extends along the vertical direction. In addition, the directions of the two hinge shafts can be interchanged, which can also achieve the same effect.

[0037] In some embodiments, two groups of vertical orientation legs 11 are provided, and the two groups of vertical orientation legs 11 are arranged in sequence along the first horizontal direction. Two groups of horizontal orientation oil cylinders 10 are also provided, and one group of horizontal orientation oil cylinders 10 is arranged on one group of vertical orientation legs 11.

[0038] The vertical orientation leg 11 in the present application includes a telescopic leg frame and a vertical orientation oil cylinder 9 arranged in the leg frame. The leg frame is divided into at least two parts which can be slidingly connected along the vertical direction. The cylinder body and the piston of the vertical orientation oil cylinder 9 are hinged with the two parts of the leg frame and drive one part to slide vertically, thereby realizing the lifting of the vertical orientation leg 11.

[0039] The vertical orientation oil cylinder 9 and the leg frame can be hingedly connected or fixedly connected.

[0040] Description: The front end section in the present application is at least before the supporting shoe. The conventional supporting method and timing are after the supporting shoe, or even far away from the supporting shoe, which leads to the collapse of the tunnel in poor geological conditions.

[0041] The front end section in the application can also be called as L1 area, in the technical field of TBM equipment, the tunnel is usually divided into L1 area and L2 area along the direction away from the tunnel face, the preliminary support is usually carried out in the L1 area in the prior art, and the segment support is carried out in the L2 area, and the secondary segment support is carried out in the L1 area in the application, so that the risk of construction in the poor geological area is greatly reduced.

[0042] The poor geology in the application refers to the broken, rock burst, large deformation, weak surrounding rock and the like of the surrounding rock of the tunnel. On the contrary, the good geology refers to the complete and stable surrounding rock of the tunnel.

[0043] The principle and implementation mode of the application are described by applying specific examples, and the above examples are only used to help understand the method and core idea of the application; meanwhile, according to the idea of the application, the specific implementation mode and application range will be changed by the person skilled in the art. In conclusion, the content of the specification should not be understood as the limitation of the application.

Claims

1. An open-type TBM tunneling dynamic stabilization system, characterized in that: include: The auxiliary thrust cylinder is installed on the main structure of the TBM, with one end facing the front end face of the lower section. An attitude adjustment assembly is mounted on the main structure of the TBM and is configured to drive the main body to adjust its attitude using the supporting reaction force provided by the lower block; the auxiliary thrust cylinder is only provided in the lower part of the main structure of the TBM; the attitude adjustment assembly includes a vertical directional support leg and a horizontal directional cylinder; The bottom of the vertical directional support leg is provided with a support body. The bottom of the support body is an arc-shaped structure that matches the top surface of the lower segment. The vertical directional support leg can drive the support body to descend to abut the top surface of the lower segment. The vertical directional support leg and the support body are arranged to move relative to each other along a first horizontal direction, which is perpendicular to the extension direction of the tunnel. The cylinder and piston of the horizontal directional cylinder are respectively connected to the vertical directional support leg and the support body to drive the vertical directional support leg to move the main body relative to the support body along the first horizontal direction.

2. The open-type TBM tunneling dynamic stabilization system according to claim 1, characterized in that: The vertical steering support legs are provided in two sets, and the two sets of vertical steering support legs are arranged sequentially along the first horizontal direction. The horizontal steering cylinders are also provided in two sets, with one set of horizontal steering cylinders being arranged on one set of vertical steering support legs.

3. The open-type TBM tunneling dynamic stabilization system according to claim 1, characterized in that: The two ends of the horizontal steering cylinder are respectively hinged to the support body and the vertical steering leg.

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