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Covering earth prevention system of rectangular shield tunneling machine and control method of covering earth prevention system

A control method and technology of shield machine, which are applied in earth-moving drilling, mining equipment, tunnels, etc., can solve the problems of surrounding soil layer disturbance, affecting the surrounding environment, lubricating diaphragm, etc., and achieve the effect of reducing back soil phenomenon and sensitive control.

Active Publication Date: 2014-05-28
SHANGHAI MECHANIZED CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, due to the viscosity of the soil and the huge pressure, the soil sticks tightly to the outside of the shield machine, making it impossible for the soil to separate from the machine. If it follows the machine, it will cause serious disturbance of the surrounding soil layer, cause the surface to bulge or collapse, and seriously affect the shield machine. surroundings
[0003] Due to the shape, the circular shield machine is not easy to produce the back soil effect, but the large-section rectangular shield machine or similar rectangular tunneling machine, because the shield shell has a large back area and a planar shape, it is easy to back soil effect
[0004] In the existing construction technology, the method of injecting anti-friction grout is generally used to reduce the back soil effect. The disadvantage is that when the rectangular cross-section becomes larger and larger, due to the unreliability of the grout flow, the back and surrounding areas of the shield machine will be damaged. Unable to form a slurry lubricating diaphragm, resulting in back soil phenomenon

Method used

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  • Covering earth prevention system of rectangular shield tunneling machine and control method of covering earth prevention system
  • Covering earth prevention system of rectangular shield tunneling machine and control method of covering earth prevention system
  • Covering earth prevention system of rectangular shield tunneling machine and control method of covering earth prevention system

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Please refer to Figure 1 to Figure 3 , this embodiment provides a rectangular shield machine anti-back soil system, including a number of anti-back soil plates 1 arranged above the shell of the shield machine, several groups of oil cylinders 2, and a hydraulic pump station 8 for driving the oil cylinders 2 and control systems;

[0033] The oil cylinders 2 in each group are used to drive one of the anti-back soil plates 1 to move along the upper surface of the shield machine shell; the number of each group can be any number, including 1 or 2, and the present embodiment uses An oil cylinder 2 drives an anti-back soil plate 1 as an example for illustration.

[0034] In this example, please refer to figure 2 , the anti-back soil plate 1 is also connected with the oil cylinder 2 through the connecting body 13, specifically, it is fixedly connected with the piston of the oil cylinder 2, and the connecting body 13 moves along the track body 14, and the track body 14 is con...

Embodiment 2

[0046] This embodiment is the same as the rectangular shield machine anti-soil system used in Embodiment 1. This embodiment can be regarded as a control method in the automatic mode. Figure 7 The shown touch screen 601 is operated, and the mode of the control method is selected first, and then the specific implementation of the control operation is performed.

[0047] In this embodiment, the operator first inputs and selects the quantity of the anti-back soil plate 1, the movement direction of the extension or retraction of the oil cylinder 2, the target stroke of the extension or retraction of the oil cylinder 2, and the hydraulic pressure through the interactive operation device 6. The pressure control range, wherein, the selection of the number of anti-back soil plates 1 can also be further limited to select the anti-back soil plate 1 for action, and then automatically control the oil cylinder 2 through the computer PLC master station 5 to achieve expansion or contraction ...

Embodiment 3

[0052] This embodiment is the same as the rectangular shield machine anti-soil system used in Embodiment 1. This embodiment can be regarded as a control method in the synchronous mode. Figure 7 The shown touch screen 601 is operated, and the mode of the control method is selected first, and then the specific implementation of the control operation is performed.

[0053] In this example, please refer to Figure 5 , two or more anti-back soil plates 1 act synchronously at the same time, and the computer PLC master station 5 generates control instructions according to the stroke data and speed data transmitted by each stroke sensor 3, so that each oil cylinder 2 The stroke is kept in sync with the speed. It can also be applied in the automatic mode, and combined with it, that is, during its implementation, the operation steps in the automatic mode can also be implemented simultaneously.

[0054] When there is a deviation in the telescopic stroke of the anti-back soil plate 1, ...

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Abstract

The invention provides a covering earth prevention system of a rectangular shield tunneling machine and a control method. The system comprises a plurality of covering earth prevention plates arranged above the shield tunneling machine enclosure, a plurality of groups of oil cylinders, a hydraulic pump station for driving the oil cylinders and a control system; each group of oil cylinders is used for driving one covering earth prevention plate to move above the shield tunneling machine enclosure; the control system comprises interaction operation equipment, a computer PLC (programmable logic controller) master station, an electric control cabinet and a hydraulic valve bank. The large volume covering earth above the rectangular shield tunneling machine is cut into a plurality of small blocks by the moving the covering earth prevention plates, so the large volume covering earth effect above the shield tunneling machine in the prior art is converted to be shorn small block earth bodies front and back by continuously shearing the covering soil and the covering earth phenomenon is reduced. The combined use of the computer PLC master station, the electric control cabinet, the hydraulic valve bank and the hydraulic pump station is introduced, so the control on the covering earth prevention plates is more sensible, faster and more reliable.

Description

technical field [0001] The invention relates to the innovation of a rectangular shield machine, in particular to an anti-soil system of a rectangular shield machine and a control method thereof. Background technique [0002] At present, various tunnel boring machines (including shield machines and pipe jacking machines) used at home and abroad all have different degrees of soil back phenomenon during construction. That is, due to the viscosity of the soil and the huge pressure, the soil sticks tightly to the outside of the shield machine, making it impossible for the soil to separate from the machine. If it follows the machine, it will cause serious disturbance of the surrounding soil layer, cause the surface to bulge or collapse, and seriously affect the shield machine. surroundings. [0003] Due to the shape, the circular shield machine is not easy to produce the back soil effect, but the large-section rectangular shield machine or similar rectangular tunneling machine, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06E21D9/093
Inventor 沈培坚
Owner SHANGHAI MECHANIZED CONSTR GRP
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