Shield driving parameter prediction method based on grey system model

Abstract

The invention provides a shield driving parameter prediction method based on a grey system model. According to the method, tunneling parameters of continuous tunneling of a set quantity of rings by ashield tunneling machine are selected to serve as sampled data; the sampled data is converted into a generation sequence displaying a certain law, and a tunneling parameter grey prediction model basedon the grey system theory is established based on the generation sequence, wherein the sampled data is input into the tunneling parameter grey prediction model, and the tunneling parameter grey prediction model obtains tunneling parameter prediction values of subsequent tunneling segments through calculation; the tunneling parameter prediction values are fed back to a shield manipulator to guideshield tunneling machine tunneling parameter control; and tunneling parameter samples are updated in real time to realize dynamic circulation of tunneling parameter prediction. Through the method, byweakening the randomness of original data to highlight the inherent law of the original data, only a small amount of original data is needed; and meanwhile, the model is properly corrected through thedifference between a model fitting value and an actual value, prediction precision can be improved, and the prediction result is more approximate to practice.

Description

technical field [0001] The invention relates to the technical field of underground construction engineering, in particular to a method for predicting parameters of shield tunneling based on a gray system model. Background technique [0002] In recent years, with the rapid development of tunnels and underground engineering, the shield method, as a kind of tunnel construction method, has been widely used for its safety, speed and high quality. [0003] The construction of the shield method has construction characteristics such as full closure, fast excavation, adding lining while excavating, and there is often a certain correspondence between the ground conditions and the excavation parameters. In actual engineering, understanding this correspondence can effectively control the shield. In order to meet the construction progress, safety and quality requirements, the poor posture, tool wear and surface settlement during the excavation process of the structure should be avoided. ...

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Problems solved by technology

[0005] In the prior art, there is no effective method for predicting tunneling parameters of shield machines

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