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Construction tool and construction method for continuous excavation of underwater large-diameter shield with deformed tail shield

A large-diameter, tail shield technology, applied in shaft equipment, earth-moving drilling, hydropower generation, etc., can solve the problems of long construction period, high safety risk, complex structural processing, etc., to improve construction efficiency, reduce damage, and reduce construction. cost effect

Active Publication Date: 2022-05-20
CHINA COMM 2ND NAVIGATIONAL BUREAU 3RD ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned tail shield deformation correction construction method has disadvantages such as complicated structural processing, long construction period, and high safety risks.

Method used

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  • Construction tool and construction method for continuous excavation of underwater large-diameter shield with deformed tail shield
  • Construction tool and construction method for continuous excavation of underwater large-diameter shield with deformed tail shield
  • Construction tool and construction method for continuous excavation of underwater large-diameter shield with deformed tail shield

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and the embodiment of shield tunneling with a diameter of 12.12m.

[0027] Such as figure 1 and figure 2 As shown, the segment ring 10 installed in the tail shield is from the B3 segment block at the bottom to the F segment segment block at the top, including B1 to B5, L1, L2 and F, a total of eight segment segments, among which the last installed F The two ends of the segment block are inclined, and the segment block 101 adjacent to the two ends of the F segment block are respectively the L1 adjacent block and the L2 adjacent block, and the inclined surface at one end of the L1 adjacent block and the inclined surface at one end of the L2 adjacent block are respectively connected to the F tube The inclined surfaces at both ends of the segment are matched, so that the F segment segment can be axially embedded and installed between the L1 adjacent block and the L2 adjacen...

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Abstract

The invention discloses an underwater large-diameter shield continuous excavation construction tool with a deformed tail shield, which includes a water delivery unit, a plurality of high-pressure water bladders and a plurality of guide strips, and the high-pressure water bladders are respectively fixed on the inner wall of the tail shield shell , and is located between the inner wall of the tail shield shell and the outer peripheral surface of the segment ring. The water delivery unit includes industrial water tanks, input water pipes, high-pressure water pumps, output water pipes and end hoses. A group of several high-pressure water bag input water pipes are connected in parallel to form a total input water pipe. The end hose of the water delivery unit passes through a quick connector, the main input The water pipe is connected with a group of several high-pressure water bladders. The construction method of the present invention includes 1) separately installing high-pressure water bladders and connecting them with water delivery units, 2) assembling a segment ring, and 3) sequentially completing the water injection and pressurization of the high-pressure water bladder units in a segment ring. 4) Shield tunneling and monitoring. The invention can prevent the inner wall of the deformed tail shield shell from extruding the tube piece, reduces the damage of the tube piece in the forming tunnel, improves the construction efficiency and reduces the construction cost.

Description

technical field [0001] The invention relates to a construction tool and method for an underwater tunnel, in particular to a construction tool and method that can continue to excavate after the tail shield of an underwater large-diameter shield has been plastically deformed, and belongs to the technical field of tunnel engineering. Background technique [0002] Shield tunneling is one of the main equipment used to build underwater tunnels crossing rivers and under the sea. In recent years, it is developing towards the direction of large depth, large cross-section, and long distance, and a number of large-diameter tunnels have been gradually built at home and abroad. 8-14m) or even super-large diameter (tunnel section diameter greater than 14m) submarine or river bottom tunnels and urban road tunnels. [0003] With the continuous increase of the types of strata that the shield tunnels through, the difficulty of construction gradually increases, and higher requirements are put ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/06E21D11/08
CPCE21D9/06E21D9/0607E21D11/08Y02E10/20
Inventor 何源张飞雷朱金彭钟涵许超朱宏欣嵇建雷梁学虎何柯毅徐新徐精朱家榆李聪吕挚励周博高如超熊栋栋贺创波蔡超君
Owner CHINA COMM 2ND NAVIGATIONAL BUREAU 3RD ENG
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