一种基于CSM模型的TBM刀盘比能预测方法

为了解决全断面掘进机在掘进时刀盘比能预测的难题,以岩石断裂力学为理论基础,深入分析了TBM滚刀的受力情况和破岩机理,基于CSM预测模型提出了一种新的TBM刀盘比能预测方法.通过建立滚刀与岩石相互作用的力学模型,推导出TBM刀盘的比能预测模型,并通过实例计算对刀盘的比能水平进行了量化研究,验证了模型的正确性.该预测模型基于滚刀破岩的机理,能够实时预测刀盘的比能,为TBM的刀盘优化设计以及性能预测提供了一定的理论依据.

A Method to Predict Cutterhead Specific Energy for TBM Based on CSM Model

To overcome the difficulty in prediction of cutterhead specific energy for tunnel boring machines (TBM), the rock fragmentation mechanism and forces of TBM cutters are analyzed based on the fracture mechanics theory of rock. A new method to predict cutterhead specific energy for TBM is developed based on CSM model. The specific energy prediction model for TBM cutterhead is developed using the dynamic models of TBM cutters interaction with the rock. The data from the actual tunnel construction is analyzed by a tunnel example and the comparison is made with the field data. The results indicate that the model not only can predict real-time specific energy for cutterhead, but also provide a theoretical basis for the performance prediction and optimal design of cutterhead for TBM.