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Earth pressure prediction in the chamber for earth pressure balanced shield machines

机译:地球压力平衡屏蔽机的腔室接地压力预测

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摘要

Earth pressure balanced (EPB) shield machines are large and complex mechanical systems and have been widely applied to tunnel projects. The earth pressure in the chamber is very important for EPB shield machines to avoid ground settlement and guarantee safe construction during the tunnelling process. In order to improve the prediction accuracy of the earth in the chamber, we propose a new earth pressure prediction method in this paper. At first, we analyse the main factors influencing the earth pressure in the chamber and determine the inputs and output of the prediction model. Then, we use the least squares support vector machine to establish the prediction model whose parameters are optimised by the particle swarm optimisation. The experimental results demonstrate that the proposed method has high prediction accuracy and is an effective way to predict the earth pressure in the chamber for EPB shield machines.
机译:地球压力平衡(EPB)屏蔽机是大型且复杂的机械系统,并且已广泛应用于隧道项目。 腔室的地球压力对于EPB屏蔽机非常重要,以避免在隧道过程中进行地面沉降并保证安全结构。 为了提高腔室中地球的预测精度,我们提出了本文的新地球压力预测方法。 首先,我们分析影响腔室中地压的主要因素,并确定预测模型的输入和输出。 然后,我们使用最小二乘支持向量机来建立通过粒子群优化优化的参数优化的预测模型。 实验结果表明,所提出的方法具有高预测精度,是预测EPB屏蔽机的腔室中的接地压力的有效方法。

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