Shield tunneling parameter control method based on local Fisher soil layer identification

A technology of tunneling parameters and control methods, applied in earthwork drilling, neural learning methods, neural architectures, etc., can solve problems such as different correlations of tunneling parameters and lack of comprehensiveness in tunneling parameter prediction, achieve a good safety range, and reduce surface settlement , good mode recognition effect

Pending Publication Date: 2021-06-29
SHANGHAI INSTITUTE OF TECHNOLOGY
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Problems solved by technology

[0003] However, the prediction of tunneling parameters by BP (back propagation) neural network is not comprehensive, and the construction environm

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  • Shield tunneling parameter control method based on local Fisher soil layer identification
  • Shield tunneling parameter control method based on local Fisher soil layer identification
  • Shield tunneling parameter control method based on local Fisher soil layer identification

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[0026] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0027] The present invention mainly collects the shield tunneling parameter data collected during the shield tunneling construction process in the subway, performs normalized preprocessing on the data through z-score, and then passes the processed data through the local Fisher discrimination method Multi-modal analysis is carried out on the shield tunneling parameters, and the shield tunneling parameters are classified, so as to identify the shield tunneling parameters under different soil layers. Finally, the BP neural network is used to predict the shield tunneling parameters under different soil properties, so as to summarize the safe value range of the shield tunneling parameters, optimize the shield tunneling parameters, and improve the safety of s...

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Abstract

The invention provides a shield tunneling parameter control method based on local Fisher soil layer identification, and relates to the technical field of shield tunneling parameter control. The shield tunneling parameter control method comprises the following steps of (S1) collecting shield tunneling parameter data of a construction site; (S2) performing multi-modal analysis on tunneling parameters with a local Fisher discrimination method; and (S3) predicting and optimizing shield tunneling parameters under different stratums according to the analyzed tunneling parameters through a BP neural network model. According to the shield tunneling parameter control method, a soil layer can be identified in real time according to the shield tunneling data provided by the construction site, so that reasonable shield tunneling parameters are selected, and the safety of shield construction is increased.

Description

technical field [0001] The invention relates to the technical field of shield tunneling parameter control, in particular to a shield tunneling parameter control method based on local Fisher soil layer identification. Background technique [0002] Shield tunneling parameters mainly involve total thrust, cutterhead torque, cutterhead speed, cutterhead penetration, tunneling speed and soil bin pressure, etc. The optimization of the tunneling parameters will improve the tunneling efficiency, reduce the wear of the cutter head, and at the same time effectively avoid the surface subsidence caused by the unreasonable shield parameters. Shield tunneling parameters are also affected by stratum geology, and tunneling parameters under different stratum conditions should also be adjusted accordingly. At present, the predictive control method of tunneling parameters is mainly to establish a mathematical model, and to establish a mathematical prediction model among various tunneling para...

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Application Information

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IPC IPC(8): E21D9/093G06N3/04G06N3/08
CPCE21D9/093G06N3/084G06N3/044
Inventor 刘雪桦万衡潘志群刘虎
Owner SHANGHAI INSTITUTE OF TECHNOLOGY
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