A kind of early warning system and method for mud cake on cutter head

A cutter head and mud cake technology, which is applied in the direction of earth drilling, mining equipment, tunnels, etc., can solve the problems of cutter damage, mud cake formation on the cutter head affecting tunneling efficiency, and real-time early warning of mud cake formation on the cutter head, etc., so as to prevent mud cake The generation of infrared temperature measurement parts, avoiding the damage of infrared temperature measurement parts, needing to be shut down and manually entering the warehouse for maintenance, and the results of judgment are stable and reliable.

Active Publication Date: 2022-03-29
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Application Information

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Problems solved by technology

[0004] Aiming at the problem that the existing technology cannot accurately provide real-time early warning for the state of the mud cake on the cutter head, the present invention proposes a mud cake early warning system and method for the cutter head, which solves the problem that the mud cake on the cutter head affects the tunneling efficiency and causes damage to the cutter

Method used

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  • A kind of early warning system and method for mud cake on cutter head
  • A kind of early warning system and method for mud cake on cutter head
  • A kind of early warning system and method for mud cake on cutter head

Examples

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Embodiment 1

[0042] Embodiment 1: a kind of method for early warning of mud cake on cutter plate, such as figure 2 shown, including the following steps:

[0043] S1: Collect key parameter data of K groups of shield machines. The key parameter data of each group of shield machines include cutter head thrust F, cutter head torque T, propulsion speed V and muck temperature T m ;

[0044] The calculation formula of the cutter head thrust F is:

[0045]

[0046] In the formula, l represents the number of propulsion cylinders, F i Represents the thrust F of the i-th propulsion cylinder i ;

[0047] Thrust F of the i-th propulsion cylinder i The calculation formula is:

[0048] F i =p i *s i ;

[0049] In the formula, p i represents the propulsion pressure of the i-th propulsion cylinder, s i Indicates the effective contact area between the i-th propulsion cylinder and the cutter head;

[0050] The calculation formula of the propulsion speed V is:

[0051] V=L*t;

[0052] In the ...

Embodiment 2

[0093] Example 2: A kind of early warning system for the mud cake of the cutter disk, such as figure 1 As shown, it includes a muck temperature measurement unit, a cutter head thrust detection unit, a cutter head torque detection unit and a propulsion speed detection unit. It is connected with the data processing unit, and the data processing unit is connected with the control system; the control system is connected with the mud cake state evaluation model establishment unit and the alarm unit. The data processing unit is used to process the data measured by the muck temperature measurement unit, the cutter head thrust detection unit, the cutter head torque detection unit and the propulsion speed detection unit, and send it to the control system. The control system preprocesses the data again. and normalization to form the transmission data that the mud cake state evaluation model establishment unit can receive; the alarm unit can receive the results evaluated by the mud cake ...

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Abstract

The invention discloses an early warning system and method for cutter head mud cake, comprising the following steps: collecting key parameter data of a shield machine, including cutter head thrust, cutter head torque, advancing speed and muck temperature; To judge the state of mud cake, establish a comparison data set of key parameters and mud cake state, and randomly divide it into a sample training set and a data verification set; set the target error; use the sample training set to train the neural network to obtain the evaluation model of the mud cake state of the cutter head, Input the data verification set into the cutter head mud cake state evaluation model to calculate the error rate; compare the error rate with the target error, if the error rate is not less than the target error, retrain the cutter head mud cake state evaluation model until the error rate is less than the target error; collect new The key parameter data of the shield machine is used, and the mud cake state evaluation model of the cutter head is used to evaluate and warn the mud cake state of the cutter head in real time. The judging result of the invention is more stable and reliable, and can effectively prevent the generation of mud cake.

Description

technical field [0001] The invention belongs to the technical field of shield tunnel boring machine construction, and in particular relates to an early warning system and method for mud cake formation on a cutter head. Background technique [0002] In the case of complex geological conditions during the shield construction process, the shield driver lacks the theory or experience for reference in the construction, which will lead to the untimely adjustment of the tunneling parameters and the phenomenon of mud cake on the cutter head. The mud cake on the cutter head will reduce the driving efficiency, and at the same time, it will cause great harm to the cutter head, which will lead to eccentric grinding of the hob. At present, a pressure sensor is installed in the soil tank to reflect the adhesion of the soil in the soil tank to prevent the formation of "mud cake". This technology can only indirectly reflect the difficulty of mud cake generation through the pressure of the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/08E21D9/00E21F17/18
CPCE21D9/08E21D9/003E21F17/18
Inventor 李光林福龙路亚缇赵祥孟祥波魏晓龙陈力廉润泽王昆谢荣灿焦敬波周树亮
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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