Land Subsidence Prediction Model of Rail Transit Based on High-frequency Combination Segment-Gene Expression Programming Algorithm
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 8
Abstract
Objective Land subsidence prediction and control is one of the most concerned issues in rail transit shield tunnel construction. In order to solve the complex and poor interpretable problem of the model expression in the existing land subsidence prediction and control, an interpretable model that is concise, clear，and capable of describing complex problems is needed. GEP (gene expression programming) algorithm provides this possibility, so it is necessary to study in depth the rail transit land subsidence prediction model based on HFS (high frequency segment)-GEP algorithm. Method Based on the shield tunnel project of a certain shield tunnel section in Hangzhou-Shaoxing Intercity Railway, parameters such as earth chamber pressure, cutterhead torque, cutterhead speed, advancing speed, total thrust, tunnel buried depth and shield tail grouting amount during shield construction are selected as key input construction parameters, with land subsidence as the output construction parameter. Through alternative formula set screening and HFS selection, a land subsidence prediction model of rail transit based on HFS-GEP algorithm is established. Key construction parameters of the 180th-210th section are optimized and adjusted with the model, and effect of the shield construction parameters change on the final land subsidence is analyzed. Result & Conclusion The land subsidence prediction model of rail transit based on HFS-GEP algorithm can reflect the explicit relationship between shield construction parameters and final land subsidence. Compared with the traditional GEP algorithm model, this model has higher accuracy, simpler structure and faster convergence. By optimizing and adjusting the key construction parameters of the shield, the final subsidence of the 180th-210th section can be controlled within 10 mm.
Authors and Affiliations
Min HU, Mengdong LU
Keywords
Related Articles
- EP ID EP742706
- DOI 10.16037/j.1007-869x.2024.08.035
- Views 18
- Downloads 0
RFID-based High-temperature Superconducting Maglev Train Positioning Method
Objective Targeting the inapplicability of conventional train positioning technologies to HTS (high-temperature superconducting) maglev trains, as well as the limitations of existing positioning technologies for such tra...
Research Progress of Urban Rail Transit Traction Power Supply System with Bidirectional Converters
Objective Most of the traditional traction power supply systems of urban rail transit lines in China use diode rectifier units, which have the deficiencies that electric energy can only flow in one direction and the rege...
Research on Switch Machine Fault Prediction Based on CHMM
Objective As an important component of urban rail transit signal equipment, once the switch machine malfunctions, the operation will be seriously affected. Monitoring and predicting its health status is particularly impo...
Influence Law of Urban Shallow-buried Tunnel Buried Depth on Land Subsidence
Objective The buried depth of tunnel is one of the important factors contributing to land subsidence induced by tunnel construction, especially in urban underground space where subtle environmental changes are prone to c...
Research on Time Synchronization of Train Communication Based on Time-sensitive Networking
Objective The millisecond-level precision of NTP (network time protocol) in train communication networks has increasingly failed to meet the requirements of high traffic and deterministic transmission. Meanwhile, existin...