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A method for breaking the mud cake of the cutter head of the shield machine

A technology of shield machine and cutter head, which is applied in the direction of earth drilling, mining equipment, tunnels, etc., can solve the problems of high cost of cleaning under pressure when opening the warehouse, difficult treatment of mud cake on the cutter head, and long processing cycle, etc., and achieves good economical efficiency. Applicability, good construction safety, and the effect of reducing labor intensity

Active Publication Date: 2019-11-08
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention proposes a method for removing mud cake from the cutter head of a shield machine, which solves the problems of difficulty in handling the mud cake on the cutter head of the existing shield machine, high cleaning cost, high risk, and long processing period when the warehouse is opened under pressure.

Method used

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  • A method for breaking the mud cake of the cutter head of the shield machine
  • A method for breaking the mud cake of the cutter head of the shield machine
  • A method for breaking the mud cake of the cutter head of the shield machine

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Embodiment 1

[0034] This embodiment provides a method for removing the mud cake on the cutter head of a shield machine. The mud cake on the cutter head is judged by various factors such as penetration, thrust, torque, slag discharge, temperature, etc. If the mud cake is found, it must be dealt with as soon as possible. The main thing is to reinforce it in front of the cutter head.

[0035] The specific processing method is as follows:

[0036] (1) For the mud cake on the cutterhead of the shield machine, different non-opening methods should be adopted according to different models of the shield machine.

[0037] (2) For the shield machine equipped with the horizontal advanced grouting device 8, the front of the cutter head 4 is reinforced in advance through the advanced grouting device, and medium and low-strength mortar is injected to form the reinforcement zone 1 in the soil body 2, and the cutter head 4 The soil-sand mixing area 3 is formed in the front; for the slurry shield machine e...

Embodiment 2

[0044] This embodiment provides a method for removing the mud cake on the cutter head of a shield machine. The mud cake on the cutter head is judged by various factors such as penetration, thrust, torque, slag discharge, temperature, etc. If it is found that the mud cake must be disposed of as soon as possible, the main It is to strengthen the front of the cutter head and the periphery of the shield shell. The additional reinforcement area around the shield shell can rub against the edge of the cutter head, optimize the mud cake breaking effect, and stabilize the formation and reduce the disturbance to the formation.

[0045] The specific processing method is as follows:

[0046] (1) For the mud cake on the cutterhead of the shield machine, different non-opening methods should be adopted according to different models of the shield machine.

[0047](2) For the shield machine equipped with the horizontal advanced grouting device 8 and the peripheral advanced grouting device 7, t...

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Abstract

The invention provides a method for breaking a mud cake of a cutter head of a shield tunneling machine. The method comprises the following steps: step a, reinforcing the front side of a cutter head orreinforcing the front side of the cutter head and the periphery of a shield shell; step v, during reinforcement of the front side of the cutter head, controlling a distance between a reinforcement area and the cutter head; and during reinforcement of the front side of the cutter head and the periphery of a shield shell, controlling distances between the reinforcement area and the cutter head andbetween the reinforcement area and shield shell; step c, after solidification of to-be-reinforced serous fluid, adjusting a shield tunneling machine to be in a to-be-tunneling state; and step d, injecting a modifier into the cutter head, moving the shield tunneling machine forward, rotating the cutter head, and removing a mud cake on the cutter head by using the friction between the cutter head and the reinforcement area. The method has the following beneficial effects: the opening operation under pressure of the worker is not needed, so that the risk caused by the opening operation under pressure is eliminated greatly, the labor intensity of the worker is reduced, and the working environment of the worker is improved; the preparation work with complicated process and high cost is avoided;the construction period is shortened; the cost is lowered; the mud cake breaking efficiency is high; and the construction safety and economic applicability are high.

Description

technical field [0001] The invention relates to a shield tunneling method, in particular to a method for breaking mud cake on a cutterhead of a shield tunneling machine. Background technique [0002] With the development of the economy, the advancement of science and technology, and the demand for interconnection, tunnel engineering and rail transit have experienced explosive growth, and the shield tunneling method has been promoted and applied in more and more projects. [0003] The shield tunneling method uses a shield machine for excavation, which requires the shield machine to have certain adaptability to the stratum. In engineering practice, when the shield machine is excavating clay, silty clay, silty clay, mudstone and other strata, the surface of the cutterhead is easily adhered to clay. A thick layer of mud cake forces the cutter head to lose its excavation ability, which greatly reduces the penetration and seriously affects the efficiency of shield tunneling. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/06E21D9/08
CPCE21D9/0671E21D9/0678E21D9/0685E21D9/08
Inventor 王又增叶蕾贺开伟袁文征苏志学徐金秋韩文鹏李瑞石
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD