Shield tunneling parameter deviation calculation method and system based on random forest regression

Abstract

The invention discloses a shield tunneling parameter deviation calculation method and system based on random forest regression. The method comprises the following steps: S1, obtaining original data; S2, performing preprocessing and data division on the original data to obtain construction data of the same shield machine type under the same geological data; S3, establishing a random forest regression model, and training the random forest regression model by adopting construction data of the same shield model under the same geological data; S4, obtaining a predicted value of the new shield project through the regression model; and S5, performing deviation calculation on the real-time parameter value of the new shield project and the corresponding predicted value to obtain a deviation value of the shield tunneling parameter. According to the method, deviation calculation is carried out on the shield tunneling parameters, the tunneling parameter deviation value of the shield tunneling machine in the tunneling process is given, tunneling state data can be further given, a reference basis can be provided for engineering construction, and the quality of shield construction can be improvedconveniently.

Description

technical field [0001] The invention relates to the field of shield tunneling, in particular to a method and system for calculating deviations of shield tunneling parameters based on random forest regression. Background technique [0002] In the process of shield tunneling at the present stage, because the underground construction environment is very complicated, there are many factors affecting shield tunneling. Shield tunneling parameters can reflect the efficiency and stability of shield tunneling. Reasonable control of shield tunneling parameters has become the key to the shield tunneling process, which has always been a concern of shield tunneling technicians. [0003] Usually, the shield tunneling parameters will be affected by the construction status of the shield machine, and also by many external factors. At present, the tunneling parameters of the shield machine are mainly controlled by the shield tunneling technicians based on past construction experience to prop...

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Problems solved by technology

[0004] In the traditional shield parameter research, the parameter calculation is based on the empirical formula obtained through a large number of experiments on the characteristics of the parameters. However, in the field application process, there is often a certain error between the actual value of the parameter and the theoretical calculation value.

Some existing studies on shield tunneling parameters through data analysis methods can provide some effective references for tunneling parameter settings, but fail to comprehensively consider the influence of various factors such as construction geological environment, operating status, and equipment structure. , but also failed to carry out real-time correlation and deviation calculation with the construction personnel's operation, and there were problems such as being out of touch with the actual construction situation. It was difficult to provide scientific reference for engineering construction, which ultimately affected the quality of shield tunneling construction.

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