Method and system for recognizing geological conditions in front of shield tunneling machine in real time based on vibration response

• Main Authors: GONG YANGKAI, ZHU MINXIANG, CHENG HONGZHAN, REN YUHAO, GENG ZIHENG, CHEN RENPENG, ZHANG CHAO, DENG PENG
• Format: Patent
• Language: Chinese; English
• Published: 23.06.2023
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention discloses a method for recognizing geological conditions in front of a shield tunneling machine in real time based on vibration response. The method comprises the steps that vibration signals in the tunneling process of the shield tunneling machine are collected through airborne vibration monitoring equipment; collecting tunneling parameters of the shield tunneling machine; geological conditions of excavation of the shield tunneling machine at the drilling position are obtained; constructing a database composed of tunneling parameters, vibration signals and geological conditions; analyzing the response relationship between the tunneling parameters and the vibration signals in the database; verification is carried out according to known geological conditions, and different geological categories are identified; and finally, a support vector machine is adopted to quantify classification boundaries of different geological categories. By combining the real-time tunneling parameters and the vibration