The construction method used for the anti-rotation at the start of the shield machine

A construction method and technology of shield machine, which are applied in earth-moving drilling, mining equipment, tunnels, etc., can solve the problems of rotation, instability of steel sleeve device, failure of starting, etc., and achieve good sealing effect, small structural size, Simple and practical effect
CN110671116BActive Publication Date: 2022-02-15CCCC SECOND HARBOR ENG
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
CCCC SECOND HARBOR ENG
Publication Date
2022-02-15

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Abstract

The invention discloses a starting anti-rotation device for a shield machine and a construction method thereof. A pair of rails are arranged at intervals in the lower part of the steel sleeve, which includes the following steps: Step 1. A pair of inner and outer through holes are arranged symmetrically on the shield body. jacks, and the distance between a pair of jacks is set so that they can be located on both sides of a pair of rails; Step 2, seal and fix the sleeve in the jack, and set threads on the inner wall of the sleeve; Step 3, A pair of screw rods are threadedly connected in a pair of sockets respectively, and can extend or retract into the outer wall of the shield. The invention has the advantages of simple structure, convenient use, good sealing effect and the like.
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Description

technical field

[0001] The invention is used in the technical field of tunnel construction devices. More specifically, the present invention relates to an anti-twist device for starting a shield machine and its construction method, especially applicable to the technical field where it is impossible to weld an anti-iron block on the periphery of the shield when a steel sleeve is used for starting. Background technique

[0002] The steel sleeve launch of the shield machine is a new construction technology developed based on the principle of balance. When the steel sleeve is launched, before the shield machine goes down the well, the lower half of the steel sleeve is installed at the designated position of the launch shaft, and Appropriately backfill gravel at the inner bottom of the sleeve, spread coarse sand on the upper part, then hoist the shield downhole, and finally install the steel sleeve and continue backfilling. The closed space of this steel sleeve provides the wate...

Claims

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