Shield tunnel entry and exit multifunctional starting platform and starting method

Abstract

The invention belongs to the technical field of tunnel construction, and particularly relates to a multifunctional originating station and originating method for departure and reception of a shield. The originating station comprises a support frame, guide rails, a walking mechanism, a load bearing platform, a load bearing platform rotating mechanism, a load bearing platform lifting mechanism and shield tunneling machine brackets, wherein a group of guide rails are horizontally paved below the support frame; the support frame can horizontally move along the guide rails through the walking mechanism; the load bearing platform is arranged above the support frame; the load bearing platform rotating mechanism and the load bearing platform lifting mechanism are arranged between the support frame and the load bearing platform respectively; the shield tunneling machine brackets are symmetrically arranged on two sides of the top of the bearing platform. According to the multifunctional originating station and originating method for departure and reception of the shield, purposes of overall lifting, translation, U-turn originating and the like of the main unit of the shield can be realized more rapidly, further, the working scheme and the operation process are greatly simplified, the economic cost and the safety risks are reduced, and the construction time of the construction link is shortened, so that the multifunctional originating station and originating method are very applicable to popularization and implementation.

Description

technical field [0001] The invention belongs to the technical field of tunnel construction, and in particular relates to a multifunctional starting platform and a starting method for shield tunnel entry and exit. Background technique [0002] With the construction of underground expressways in major cities in China, tunnel construction has developed rapidly, and the tunnel construction equipment it relies on has also been vigorously developed. Shield machines are special engineering machinery for tunnel excavation, and have been widely used in subways, railways, highways, Municipal, hydropower and other tunnel projects. Since tunnel excavation needs to consider complex comprehensive conditions such as geology, hydrology, and environment, the design and manufacture of shield machines must be "tailor-made" to overcome various problems that may be encountered during construction. Taking subway tunnel excavation as an example, subway tunnels have left, On the right line, after ...

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Problems solved by technology

[0003] In the traditional shield turning project, the disassembled parts are still huge and heavy, and the heaviest part is about hundreds of tons. It needs to be put into operation with super-large hoisting equipment, and the hoisting capacity of the equipment and the level of hoisting operators Strict requirements are put forward. In addition, external factors such as the site conditions of the construction site, the bearing capacity of the foundation, the design of the engineering structure, and the precision of the shield machine can affect the difficulty of the hoisting operation, especially when the parts cannot be hoisted on site. , it needs to be separately transported underground at the end and moved to a position that is convenient for hoisting, and the hoisting operation can be carried out after meeting the hoisting conditions, which makes the operation more complicated; in a word, although the end positions of the left and right tunnel lines do not exceed tens However, the U-turn operation of the shield machine host includes a series of tasks such as dismantling, hoisting, reassembly, and debugging. The operation plan is complex, costly, and time-consuming, which is likely to cause serious consequences such as delays in construction schedules, frequent safety accidents, and cost out of control.

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