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Slip casting control shield attitude and deviation correcting construction method

A technology of shield posture and construction method, which is applied in the direction of earth drilling, mining equipment, tunnels, etc., can solve problems such as difficulty in adapting to large-scale shield tunnels, and achieve improved assembly quality, strong operability and economy, and obvious effects Effect

Inactive Publication Date: 2008-10-29
SHANGHAI TUNNEL ENGINEERING CO. LTD.
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Problems solved by technology

It was also found in the search that the Chinese patent application "Shield Tunnel Attitude Real-time Automatic Correction Method and Its Device" with the application number of 200510111124.8 disclosed a program based on space vector theory to automatically calculate the shield attitude parameters, and then through the pressure partition In the control mode or jack group control mode, special shield posture automatic correction software is used to control the deflection correction method of the shield posture. Disadvantages of difficulty adapting to large shields

Method used

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  • Slip casting control shield attitude and deviation correcting construction method
  • Slip casting control shield attitude and deviation correcting construction method
  • Slip casting control shield attitude and deviation correcting construction method

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with specific embodiments. This embodiment adopts the technical solution of the present invention for construction, which provides detailed implementation and specific operation process, but the scope of protection of the present invention is not limited to the following embodiments.

[0028] Taking a shield tunnel construction project as an example, the project adopts a φ14.87m diameter airbag mud-water balance shield construction, which is a super-large shield. The total weight of the main shield machine is 1,900 tons, and its length is 12.65 meters. Its center of gravity is 4.3 meters away from the cutting edge of the cutterhead. The tunnel is 1,270 meters long, and the lining adopts a single-layer lining, which is a general ring wedge-shaped segment with an outer diameter of 14.5m, an inner diameter of 13.3m, and a ring width of 2 meters. The plane axis of the tunnel is slightly reversed...

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Abstract

The invention discloses a construction method for controlling the posture of a shield by grouting, and for deviation rectification. The method comprises the following steps: first, grouting holes are additionally arranged on a shield shell body; second, grouting material is prepared; third, grout used for grouting is stored and transported; fourth, grouting is performed to the shield shell body. The method adopts shearing resistant high gravity single slurry mainly including sand as the grouting material, grouting is performed through the grouting holes of the shield shell body, and the purposes of shield posture adjustment and deviation rectification can be achieved. The method has the advantages that the method is simple and feasible, the effect is obvious, and meanwhile, the influence of the shield construction to the periphery environment can be reduced. Therefore, the method is especially suitable for the tunnel construction of the large-scale shield, and can particularly be used for shield posture adjustment and deviation rectification during the construction of the shield with ultra large diameter larger than 11 m.

Description

Technical field: [0001] The invention relates to a tunnel shield construction method, in particular to a construction method using a grouting method to control shield posture and correct deflection, and belongs to the technical field of construction engineering. Background technique: [0002] The axis control of the shield machine is a very important link in the construction process of the shield tunnel. Whether a good shield posture can be maintained during the advancing process is the key to the smooth assembly of segments and the improvement of the quality of the ring tunnel. The ring segment is used as the backseat for the propulsion of the shield machine, and its assembly quality plays a crucial guiding role in the propulsion of the shield machine. As far as the current shield construction is concerned, the deflection correction of the shield posture is mostly achieved through the grouping of jacks to realize the difference in the pressure of each partition, so as to ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06E21D9/093
Inventor 丁志诚郑宜枫黄德中李鸿何国军戴仕敏李章林梅利强
Owner SHANGHAI TUNNEL ENGINEERING CO. LTD.
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