Method for calculating torque of shield cutterhead based on dimensional analysis

Abstract

A method for calculating the torque of a shield cutterhead based on dimensional analysis is provided. The calculation method comprises: determining parameters affecting the torque of the cutterhead; calculating the torques of the main control item and the dimensionless cutterhead according to the parameters affecting the torque of the cutterhead; summarizing the calculated torques of the main control item and the dimensionless cutterhead; using the linear regression method to obtain the coefficient identification of the main control item; and according to the main control coefficient identification result, obtaining a calculation model of the torque of the cutterhead. According to the method provided by the present invention, the model prediction result can provide a theoretical basis forthe intelligent design of the equipment, and provide a reference for the safe construction of different geology; under the premise of satisfying the uniformity of the dimensions on both sides of the model, the influence factors such as the cutterhead diameter, the tunneling speed, the cutterhead speed, and the like are comprehensively considered, so that the estimation is accurate and reliable; and the torque parameters can be adjusted according to the conditions of the driving formation and the change of the operating parameters, so that the method can provide a reliable theoretical basis forthe design of the tunneling equipment power system and for the real-time adjustment of the torque parameters during the construction process.

Description

technical field [0001] The invention relates to a method for calculating the torque of a shield cutterhead. In particular, it relates to a calculation method for estimating shield cutter head torque based on dimensional analysis. Background technique [0002] Shield tunneling is a special construction machine for tunneling, and it has been widely used in subway, railway, highway, municipal, hydropower and other tunnel projects. The cutter head torque of the shield machine is used to maintain the cutter head continuously rotating to cut the soil in front. It is the core parameter throughout the operation of the equipment and the basic parameter for equipment energy efficiency control and safety status monitoring. It is related to equipment size and configuration, geomechanics parameters, The tunneling control parameters are closely related, and the influencing factors are very complicated. Predicting cutter head torque is an important theoretical basis for equipment paramet...

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However, at the present stage, data mining methods such as artificial neural network, support vector machine and other algorithms, their engineering applications are more limited to the level of data identification, and cannot explain the causal relationship between target parameters and influencing factors.

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