单护盾TBM管片旋转问题及应对措施

为了解决由于单护盾TBM掘进刀盘扭矩过大或盾体姿态发生偏差时,管片在掘进过程中产生旋转,造成管片安装精度、外观质量及运输效率受到影响等问题,结合单护盾TBM在软岩地层掘进条件下,分析管片旋转产生的原因,针对刀盘等设备的结构进行设计改进、优化掘进参数、优选刀具类型、及时清理刀盘以及必要时采取牺牲管片环缝与纵缝等措施,最终解决了单护盾TBM掘进过程中管片旋转的施工难题。     

面向船舶分段流水线的多工位协同作业建模技术

为实现船舶分段制造的流水化生产,提高生产效率,提出一种针对车间级的多工位协同制造控制系统,实现针对工位级的精确作业计划。通过分析分段制造工艺数据流、多工位协同作业的特点和关键协同数据,建立以月度生产计划总工期最短为目标的多工位协同作业数学模型。通过搭建仿真验证平台,以上海某船厂的实际案例数据为基础,充分验证模型的正确性,为多工位协同控制系统的建立提供理论依据。     

括苍山隧道二号通风竖井正向施工导碴井、二次扩挖法施工技术

No. 2 ventilation shaft of Kuocangshan tunnel on Zhuji Yongjia expressway has complex geologic condition, many construction difficulties and short construction schedule. In order to complete the project on time, the construction technology of "muck dropping shaft sinking and secondary enlarging excavation" is selected for the sinking of the shaft from several shaft sinking methods, including conventional one time shaft sinking method, "muck dropping shaft sinking and secondary enlarging excavation" method and raise boring method. The selected construction technology is presented in this paper. This technology not only achieves good results in construction schedule, construction safety and construction quality, but also reduces the construction cost.