Non-hole-expansion type in-hole dismounting method for open-type TBM main machine

Abstract

The invention discloses a non-hole-expansion type in-hole dismounting method for an open-type TBM main machine. The method comprises the steps of a, disassembling edge blocks of a cutter head; 2, disassembling a center block of the cutter head; 3, disassembling a top shield; 4, disassembling a side shield; 5, disassembling a rear section of a main beam and a rear supporting leg; 6, disassembling a supporting shoe assembly; 7, disassembling a middle section of the main beam and a saddle; 8, disassembling a front section of the main beam; 9, disassembling a TBM large piece; 10, transporting the center block; and 11, transporting each side block of the cutter head. According to the method, lifting points are not made, a cavity is not excavated in an expanding manner, other parts, except for the TBM large piece, of the open-type TBM main machine are disassembled through the self structure of equipment and a simple portal disassembling machine, the TBM large piece is overturned and disassembled through a TBM large piece overturning auxiliary device, the requirement for using of tunnel surrounding rocks with the poor surrounding rock integrity can be met, and the requirement for non-hole-expanding type in-hole disassembling of various surrounding rocks is met.

Description

technical field [0001] The invention belongs to the technical field of in-cavity disassembly of an open TBM main engine, and in particular relates to an in-cavity disassembly method of an open TBM main engine without expanding the hole. Background technique [0002] At present, in the construction of single-head excavation with large buried depth and long distance at home and abroad or the construction of two TBMs facing each other, after the completion of the TBM excavation task, according to the demolition position, it can be divided into two methods: demolition inside the cave and demolition outside the cave. According to the actual situation of the TBM construction site, most of them are demolished inside the cave. The demolition in the cave is divided into the front method and the back method. The front method is divided into the opposite method and the branch hole method. [0003] Both the former method and the latter method need to set up enlarged caverns, install br...

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Problems solved by technology

[0003] Both the former method and the latter method need to set up enlarged caverns, install bridge cranes (or gantry cranes), and fix lifting points, which restricts the progress of TBM dismantling, affects the total construction period of the project, and relatively increases the construction cost

In addition, the position of the termination pile number does not meet the previous method of excavating and expanding the cavern to set up a TBM dismantling cavern, and the surrounding rock type of the tunnel is poor in integrity of the surrounding rock. The hoisting and dismantling work of the main drive of 100 tons, therefore, how to realize the safe, economical, efficient and quick dismantling of large TBM equipment in the cave, reduce the earthwork excavation in the dismantling area of ​​the TBM cave, shorten the dismantling period, reduce the construction cost, and dismantle the TBM without damage Large-scale equipment has become a technical problem that needs to be solved urgently

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