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Novel soft arm TBM and tunnel boring method thereof

A flexible arm, a new type of technology, applied in the new flexible arm TBM and its excavation field, can solve the problems of low excavation efficiency of the flexible arm roadheader, and achieve the effect of meeting the needs of on-site construction, improving the excavation efficiency and improving the applicability

Pending Publication Date: 2020-04-07
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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Problems solved by technology

[0004] Aiming at the deficiencies in the above-mentioned background technology, the present invention proposes a novel flexible boom TBM and its tunneling method, which solves the problem of low tunneling efficiency of the flexible boom tunneling machine in the prior art

Method used

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  • Novel soft arm TBM and tunnel boring method thereof
  • Novel soft arm TBM and tunnel boring method thereof
  • Novel soft arm TBM and tunnel boring method thereof

Examples

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Embodiment 4

[0047] Embodiment 4: a kind of excavation method of novel flexible arm TBM, such as Figure 9 As shown, the specific steps are as follows:

[0048] S1: The parallel cylinder arm 2 is fully retracted, the central axis of the rotary cutting cutterhead 1 of the cutterhead tunneling system coincides with the central axis of the main bearing 4 of the slewing mechanism, and the cutterhead tunneling system is in the initial state;

[0049] S2: The background controller determines the pre-excavation contour according to the tunnel boundary parameters, and plans the movement route of the rotary cutter head 1;

[0050] S3: The background controller sets the displacement of the six parallel oil cylinders of the parallel oil cylinder arm 2 according to the movement route of the rotary cutter head 1 planned in S2;

[0051] S4: When the TBM starts to excavate, the auxiliary support shoe 10 and the main support shoe 11 are braced tightly on the cave wall, the background controller controls ...

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Abstract

The invention discloses a novel soft arm tunnel boring machine (TBM) and a tunnel boring method thereof. The problem that a soft arm tunnel boring machine is low in tunnel boring efficiency in the prior art is solved. By means of the technical scheme, the novel soft arm tunnel boring machine comprises a cutter head tunnel boring system, a main beam supporting and protecting system and a slag output system. The cutter head tunnel boring system is arranged at the front portion of the main beam supporting and protecting system. The slag output system is located on the main beam supporting and protecting system and corresponds to the cutter head tunnel boring system. The cutter head tunnel boring system comprises a rotary-cut cutter head and a parallel-connection oil cylinder arm. One end of the parallel-connection oil cylinder arm is connected with the rotary-cut cutter head, and the other end of the parallel-connection oil cylinder arm is rotationally connected with the main beam supporting and protecting system through a rotating mechanism. In the rock breaking mode of the rotary-cut cutter head of the cutter head tunnel boring system, forward hobs exist, a plurality of rotary-cut lateral hobs are axially distributed on a fixed cutter cylinder, when the parallel-connection oil cylinder arm for driving the cutter head to move completely retracts, the soft arm tunnel boring machine mainly performs fracturing rock breaking through the forward hobs, when a hole needs to be expanded around, the soft arm tunnel boring machine mainly performs rotary-cut rock breaking through the lateral hobs of the cutter head, and the novel soft arm tunnel boring machine adapts to different working conditions and improves the tunnel boring efficiency.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a novel flexible boom TBM and a tunneling method thereof. Background technique [0002] Rock tunnel boring machine (TBM) is a large-scale tunnel excavation equipment integrating mechanical, electrical, hydraulic and other technologies, and plays an important role in the construction of mountain tunnels and urban subway projects. At present, the excavation section of TBM is basically circular, and the cases of special-shaped sections such as rectangle and horseshoe are all used in the construction of soft soil tunnels, and once the excavation section is determined, it cannot be changed during the construction process, resulting in the shape of the excavation section Single, the scope of application is limited. The current status and planning of rock tunnel construction at home and abroad show that more and more projects use special-shaped sections. If the traditional ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/087E21D9/08E21D9/093
CPCE21D9/087E21D9/0874E21D9/093
Inventor 李建斌姜礼杰文勇亮杨航原晓伟赵梦媛
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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