盾构智能辅助施工系统中推力研究

根据盾构推进时所受阻力和地质情况,建立盾构力学模型,推导出千斤顶各区推力和总推力的理论计算公式,并将理论计算值与实际测量值进行比较,验证了理论公式的正确性;利用盾构前向探测系统判别地质类型,获取相关参数进行推力计算;根据现场施工数据,寻找盾构处于不同运行模式时各区压力的比值规律;综合以上因素设计盾构智能辅助施工系统,为司机确定推力数值和各区压力分配提供参考,使盾构沿预设的隧道理论轴线推进,有利于提高施工质量.

Thrust of the Shield Machine in the Intelligence-aided Construction System

Based on the resistance and the geological conditions during drilling, a mechanical model of the shield machine is set up and the theoretical formula is obtained for the divisional thrust and the general thrust of the jack. The theoretical formula is validated by comparing the computed values to the measured ones. The geological type and relative parameters can be obtained by the shield machine frontal detection system, and the pressure ratios o different divisions with various machine running models can be found out based on the in-situ construction data. The shield machine intelligence -aided construction system is designed based on the aforementioned factors, and it provides the driver a reference for magnitude of the thrust and distribution of the pressure to make sure that the shield machine is drilling along the predefined centra axis of the tunnel to improve the construction quality.