Failure prediction and diagnosis control method applicable to shield tunneling machine

A failure prediction, diagnosis and control technology, which is applied in earthwork drilling, mining equipment, tunnels, etc., can solve the problems of combined explosion, state combined explosion, and heavy calculation workload, and achieve the goal of improving accuracy, efficiency, and reliability Effect

Active Publication Date: 2017-02-15
HUAZHONG UNIV OF SCI & TECH
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However, the dynamic fault tree still has the following disadvantages: 1. The calculation workload is large, which can easily cause the problem of state combination explosion. This is because the solution of the existing dynamic fault tree is based on Markov (Markov) chain, and there is a pos

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  • Failure prediction and diagnosis control method applicable to shield tunneling machine
  • Failure prediction and diagnosis control method applicable to shield tunneling machine
  • Failure prediction and diagnosis control method applicable to shield tunneling machine

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[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] See Figure 1 to Figure 4 , The preferred embodiment of the present invention provides a failure prediction and diagnosis control method suitable for shield machines, which combines discrete-time Bayesian networks with fault tree analysis methods, and uses the forward and reverse of discrete-time Bayesian networks. To reasoning ability, carry out shield machine tunneling failure prediction and d...

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Abstract

The invention discloses a failure prediction and diagnosis control method applicable to a shield tunneling machine. The failure prediction and diagnosis control method comprises the following steps: (1) analyzing failure mechanism of the shield tunneling machine; (2) building a failure fault tree model of the shield tunneling machine and simultaneously determining failure logic relationships between all system members; (3) transforming a failure door into a discrete time Bayesian network according to the built failure fault tree model so as to obtain a shield tunneling machine failure discrete Bayesian network corresponding to the failure fault tree model; (4) performing failure prediction and risk diagnosis control on the shield tunneling machine by adopting a forward reasoning technology and a posterior probability of the Bayesian network.

Description

technical field [0001] The invention belongs to the related technical field of tunnel excavation equipment, and more specifically relates to a failure prediction and diagnosis control method applicable to a shield machine. Background technique [0002] In recent years, subway construction has developed rapidly in China. Due to the complex and changeable construction environment of the subway project, safety accidents occur frequently during the construction process, and the accidents caused by the failure of the shield machine account for almost half of them. In order to avoid serious casualties and property losses caused by construction safety accidents, engineering personnel at home and abroad have gradually paid attention to the failure risk management of shield machine excavation, and identified potential risks in the process of shield machine excavation based on qualitative or quantitative evaluation methods. At present, the fault tree analysis method is mainly used to...

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Application Information

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IPC IPC(8): E21D9/093E21D9/00
CPCE21D9/003
Inventor 张立茂吴贤国刘惠涛冉连月方伟立林净怡
Owner HUAZHONG UNIV OF SCI & TECH
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