Stratum Displacement Law and Intelligent Optimization Control Based on Intelligent Fuzzy Control Theory During Shield Tunneling

Mamaru Dessalegn

doi:10.7176/cer/13-6-01

Abstract

The laws of Stratum displacement and optimal control are critical for shield operation. This article’s focus is made on the intelligent fuzzy control theory concentrating on earth pressure, total thrust, driving speed, cutter torque, grouting pressure and grouting volume as the main elements of the study. A model of intelligent fuzzy control theory based on the model of No. 9 Line of Guangzhu Rail transit, on the Tianma river shield section. The paper also analyzes stratum displacement law due to shield tunnelling, executes & analyses intelligent controls for optimization of parameters, combining the five two-dimensional structures of the double structure of fuzzy control system. According to the observations made on the model. The model is upto date and the control of all parameters develops stably. The parameter ranges should be controlled as follows: earth pressure, 0.19 ~ 0.22Mpa; total thrust, 1100 ~ 1350T; driving speed, 38 ~ 50mm / min; cutter torque, 1600 ~ 2300 KN • m; grouting pressure, 0.19 ~ 0.25Mpa and grouting volume, 30 ~ 50L/min. Keywords: Shield tunnel, intelligent fuzzy control, Stratum displacement, optimal control DOI: 10.7176/CER/13-6-01 Publication date: October 31 st 2021

Highlights

In recent years, with the gradual expansion of urban areas and the growth of the urban economy, China's urban subway construction has advanced
HouHai-KeYuan shield section of Shenzhen Metro Line 2 beneath Binhai Road is analyzed by selecting earth pressure, total thrust, driving speed and other factors as the main objects of the study to establish a model of intelligent fuzzy control theory
Structure of an Intelligent Fuzzy Control System Combining the determination of the output and input of control targets of the five stages with surface settlement caused by shield construction, this paper will divide deformation system in shield tunneling into control subsystem of stratum displacement in earth pressure, control subsystem of stratum displacement in total thrust, control subsystem of stratum displacement in driving speed, control subsystem of stratum displacement in cutter torque, control subsystem of stratum displacement in grouting pressure and grouting volume

Summary

Introduction

With the gradual expansion of urban areas and the growth of the urban economy, China's urban subway construction has advanced. HouHai-KeYuan shield section of Shenzhen Metro Line 2 beneath Binhai Road is analyzed by selecting earth pressure, total thrust, driving speed and other factors as the main objects of the study to establish a model of intelligent fuzzy control theory It analyzes stratum displacement law due to shield tunnelling, controls the intelligent optimization of parameters and combines the five two-dimensional structure of the double structure of the fuzzy control system. Structure of an Intelligent Fuzzy Control System Combining the determination of the output and input of control targets of the five stages with surface settlement caused by shield construction, this paper will divide deformation system in shield tunneling into control subsystem of stratum displacement in earth pressure, control subsystem of stratum displacement in total thrust, control subsystem of stratum displacement in driving speed, control subsystem of stratum displacement in cutter torque, control subsystem of stratum displacement in grouting pressure and grouting volume.

Stratum Displacement Law of the Intelligent Fuzzy Control

Findings

Conclusions