Intelligent control method for earth pressure balance shield machine tunnel piercing parameters

Abstract

The invention discloses an intelligent control method for earth pressure balance shield machine tunnel piercing parameters. The intelligent control method is characterized by comprising the following steps of (S1) collecting data and extracting factor nodes affecting shield machine piercing performance, (S2) constructing a topology structure for the factor nodes affecting the shield machine piercing performance to acquire a fuzzy association matrix Wij of each node, (S3) constructing a fuzzy control network map of the earth pressure balance shield mechanism piercing, and dynamically evolving and calculating a state value of each factor node at a t+1 time of period via an iteration rational formula, and (S4) conducting multi-phase decision analysis according to the fuzzy control network map to real-time analyze and control deviation rectification of the earth pressure balance shield machine tunnel piercing parameters. Expert prior knowledge, fuzzy logic and graph theory technologies are employed and ratiocination and real-time analysis and decision make are provided for multi-phase shield machine parameters before, amid and after subway shield machine engineering construction under complicate environment.

Description

technical field [0001] The invention belongs to the field of underground engineering construction safety control, and more specifically relates to an intelligent control method for tunneling parameters of an earth pressure balance shield machine. Background technique [0002] In the past ten years, my country's underground space development and urban rail transit construction have developed rapidly. Due to the complex and changeable construction environment of subway shield tunneling, many risk factors and strong correlations, safety accidents occur frequently during the construction process. 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 safety management and risk control in the construction process of subway shield tunneling, and identified key influencing factors and potential risks based on qualitative or quantitative modeling evaluation methods. ...

AI Technical Summary

Problems solved by technology

[0003] The above model construction methods have played an active role in the management and control of subway shield tunneling construction in recent years, but there are still three problems in the following aspects: (1) Excessive reliance on expert experience and knowledge

Once an accident occurs, experts are often eager to organize engineering meetings to focus on the treatment plan, which is likely to delay the best time for engineering accident handling. It also shows that the scarce expert knowledge has not been integrated for real-time safety management decision support.

(2) Limited to static security management

In fact, the safety management of subway shield construction is a complex dynamic process, and the current risk management technology is often difficult to provide real-time decision support when dealing with the dynamic process

(3) Focusing on pre-event safety management, not organically combining safety management during and after the event, and conducting systematic real-time analysis and decision-making throughout the entire process

However, the excavation method of the earth pressure balance shield machine in the full-face sand and gravel disclosed in this patent only automatically manages the amount of excavated soil and soil discharge during the excavation process of the earth pressure balance shield machine, so as to achieve better construction safety. , the actual earth pressure balance shield tunneling construction is complex and changeable, and this method cannot realize real-time analysis and decision-making control in multiple stages before, during and after the event

Images