A new calculation model of cutterhead torque and investigation of its influencing factors
A new calculation model of cutterhead torque and investigation of its influencing factors
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DOI：
10.1007/s11431-012-4749-1
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发表时间：
2012-02
期刊：
影响因子：
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通讯作者：
Lintao Wang;Guofang Gong;Hu Shi;Huayong Yang
中科院分区：
文献类型：
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作者：
Lintao Wang;Guofang Gong;Hu Shi;Huayong Yang
刀盘扭矩是土压平衡盾构机设计和施工的关键参数。然而，传统的刀盘扭矩计算模型在多变的地质条件下过于粗糙或存在较大误差。为了提高刀盘扭矩计算模型的精度，考虑了刀盘的动态工作参数，提出了一种新的刀盘扭矩计算模型。在aΦ1.8 m型盾构机试验台上进行了试验，并将新模型的计算结果与实验数据进行了比较，验证了新模型的有效性。该模型在平稳阶段的相对误差低至4%，在振动阶段末的相对误差降至5%。根据新模型的计算结果，结合theΦ1.8 m试验台和施工现场的试验数据，研究了各工况参数与刀盘扭矩之间的内在关系，并得出了一些定量结论。
Cutterhead torque is a crucial parameter for the design and operation of earth pressure balance (EPB) shield tunneling machine. However, the traditional calculation models of cutterhead torque are too rough or exist gross errors under variable geological conditions. In order to improve the precision of the calculation model of cutterhead torque, dynamic operation parameters are considered and a new model is proposed. Experiment is carried out on aΦ1.8 m shield machine test rig and the calculating result with the new model is compared with the experimental data to verify the validity of the new model. The relative error of the new model is as low as 4% at smooth stage and is reduced to 5% at the end of trembling stage. Based on the results of the new model and the test data obtained from theΦ1.8 m test rig and the construction site, the inner relationships between several operation parameters and cutterhead torque are investigated and some quantitative conclusions are obtained.