Open-type and single-shield double-mode TBM in-tunnel rapid switching construction method
A technology of rapid conversion and construction method, which is applied in the direction of earthwork drilling, shaft equipment, shaft lining, etc., which can solve the problems of TBM's inability to continuously excavate, rising cost of steel pipe sheets, and slow excavation speed, so as to save cost, time and construction steps The effect of less, high safety
Pending Publication Date: 2022-08-09
CHINA RAILWAY 19TH BUREAU GRP 1ST ENG +1
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Problems solved by technology
However, the single-shield TBM provides the propulsion reaction force of the single-shield TBM by tightening the end of the steel pipe segment. Therefore, in the case of long-distance tunnel construction with complete integrity and high compressive strength, the TBM will not be continuous due to the installation of the segment. Excavation, the excavation speed is slower than that of the open TBM, and the support of the steel pipe sheet at this time will increase the cost, excessive support, and the cost is too high
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[0058] Combine below Figure 1-12 The present invention is further described;
[0059] First, the open TBM is transformed. The open TBM is an existing equipment that can be purchased from the market, which mainly includes a cutter head system, a shield system, a main drive system, a main beam, a support system, and a propulsion system. see figure 1 and figure 2 , their positional relationship is roughly as follows: the cutter head 1 is located at the front of the TBM and is in contact with the rock face of the face, and the cutter head and the main drive 2 are connected by high-strength bolts. The shield 3 is located outside the main drive; the front end of the main beam 4 is connected to the main drive; the saddle 5 is slidably connected to the main beam; one end of the main propulsion cylinder 9 is fixed on both sides of the main beam connected to the main drive; the other end of the main propulsion cylinder Connected to the main support shoe 6. The rear support frame 7...
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The invention relates to a TBM construction method, in particular to an open-type and single-shield double-mode TBM in-tunnel rapid switching construction method. The method is mainly used for solving the problem that in the tunneling process of an existing open-type TBM, tunneling cannot be conducted when the existing open-type TBM encounters weak Steel pipe pieces are installed at the conversion points in a single-shield construction mode; locking anchor rods are arranged at the ends of the steel pipe pieces, and grouting is conducted; tunneling is carried out in an open mode, steel pipe piece supporting is carried out in a single shield mode, tunneling is carried out forwards, and tunneling is stopped when supporting shoes on the two sides move to the ends of steel pipe pieces; grouting the back of the steel pipe sheet; anchor rods are constructed; after the slurry is solidified, the supporting shoes tightly support the pipe pieces in the open mode, and the pushing oil cylinders are adopted for combined pushing in the open mode and the auxiliary pushing oil cylinders tightly support the steel pipe pieces in the single shield mode; after starting tunneling succeeds, a single shield mode is adopted for tunneling; a single shield mode is started at the conversion point, and the duct piece transportation equipment is disassembled; and construction is carried out in an open mode. The method has the advantage that the open-type TBM and the single-shield TBM can be quickly switched.
Description
Technical field: [0001] The invention relates to a TBM construction method, in particular to a method for rapid conversion construction in an open-type and single-shield dual-mode TBM hole. Background technique: [0002] TBM is the abbreviation of full-section hard rock boring machine. It is a special equipment for tunnel excavation and plays an important role in the construction of mountain tunnels and urban subways. According to the working principle and structure of TBM, TBM includes shield TBM and open TBM. [0003] As the most common construction method for modern hard rock tunnel construction equipment and underground engineering projects, open TBM is suitable for excavating surrounding rock formations with relatively complete surrounding rock and good self-stability, especially in hard rock, medium hard Rock excavation. The support shoe provides a propulsive counter force for the cutter head by tightening the rock wall, and the powerful support system can give full ...
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IPC IPC(8): E21D9/087E21D11/00E21D11/08E21D11/10E21D11/40
CPCE21D9/087E21D9/0873E21D11/003E21D11/08E21D11/40E21D11/10
Inventor 余情园何伟杨玉林杜兆广安明明陈忠旭郑保刚韩云程
Owner CHINA RAILWAY 19TH BUREAU GRP 1ST ENG