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Slurry shield cutterhead mud cake monitoring system and method based on ultrasonic ranging

A technology of shield cutter head and monitoring system, which is applied in the direction of earth drilling, mining equipment, tunnels, etc., which can solve the problems of project construction period and economic loss, increase project safety risk, and construction personnel cannot directly observe the state of cutter head, etc. , to avoid the loss of construction period, improve the construction quality and reduce the loss

Active Publication Date: 2021-10-08
STATE KEY LAB OF SHIELD & TUNNELING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the slurry balance shield machine is working, the slurry tank is filled with circulating mud with a certain pressure. The construction personnel cannot directly observe the situation in the tank and the status of the cutter head. It is difficult to find out in time, and it may not be discovered until the situation deteriorates to a more serious level, which will cause huge construction period and economic losses to the project construction, and increase the safety risk of the project

Method used

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  • Slurry shield cutterhead mud cake monitoring system and method based on ultrasonic ranging
  • Slurry shield cutterhead mud cake monitoring system and method based on ultrasonic ranging
  • Slurry shield cutterhead mud cake monitoring system and method based on ultrasonic ranging

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Experimental program
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Effect test

Embodiment 1

[0032] A mud cake monitoring system based on ultrasonic distance measurement, such as Figure 1 to Figure 3 As shown, it includes an ultrasonic transducer 5, a drive unit module that provides driving signals for the ultrasonic transducer 5, a signal processing module, and a power supply module that provides electric energy for the driving device and the signal processing module. The ultrasonic transducer 5 passes through the signal line Connect with drive unit module and signal processing module;

[0033] A partition 2 is provided between the muddy water chamber and the air cushion chamber of the shield machine to divide the working chamber of the shield machine into a muddy water chamber, an atmospheric pressure chamber, an air cushion chamber, a human chamber, and an ultrasonic transducer 5 is installed on the partition 2, and its installation position corresponds to the rotation track at the opening of the shield cutter head. The specific installation position can be judged...

Embodiment 2

[0041] A mud cake monitoring method based on ultrasonic distance measurement, such as figure 1 shown, including the following steps:

[0042] S1: Set or input the initial value of the parameter through the control terminal;

[0043] S2: Associating the monitoring system with the shield control system, when the shield machine starts to excavate, the system starts synchronously;

[0044] S3: the drive unit module and the signal processing module send instructions to the ultrasonic transducer 5 according to the setting of the control terminal;

[0045] S4: The ultrasonic transducer 5 emits ultrasonic waves to the muddy water shield cutter head and receives the returned ultrasonic waves;

[0046] S5: the ultrasonic transducer 5 transmits the measured ultrasonic signal to the drive unit module and the signal processing module;

[0047] S6: The drive unit module and the signal processing module process the signal through an algorithm to obtain measurement data and transmit it to ...

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Abstract

The invention relates to the technical field of shield construction, in particular to a slurry shield cutterhead mud cake monitoring system and method based on ultrasonic ranging. The system and method can monitor whether a shield cutterhead cutter has an abnormal condition of a mud cake or not in mud with certain pressure in an ultrasonic ranging manner in real time, and present a result to constructors in a visual manner, so that clear data is provided for the constructors to carry out scheme decision making, the construction quality, efficiency and safety of a project are improved, the construction period loss is reduced, and the safety coefficient is improved.

Description

technical field [0001] The invention relates to the technical field of shield tunneling, in particular to a mud cake monitoring system and method for muddy water shield cutter head based on ultrasonic ranging. Background technique [0002] The shield machine is a large-scale mechanical equipment widely used in underground engineering construction. It is mainly divided into earth pressure balance shield machine, slurry balance shield machine, TBM and pipe jacking machine. When the slurry balance shield machine is working, the slurry tank is filled with circulating mud with a certain pressure. The construction personnel cannot directly observe the situation in the tank and the status of the cutter head. It is difficult to find out in time, and it may not be discovered until the situation deteriorates to a more serious level, which will cause huge construction period and economic losses to the project construction, and increase the safety risk of the project. [0003] Therefor...

Claims

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Application Information

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IPC IPC(8): E21D9/00E21D9/08
CPCE21D9/003E21D9/08
Inventor 周振建李凤远蒋四礼曾垂刚韩伟锋任颖莹
Owner STATE KEY LAB OF SHIELD & TUNNELING TECH